* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
* mount -t debugfs debugfs /data/debugfs;cat /data/debugfs/mmc0/status
* echo 't' >/proc/sysrq-trigger
* echo 19 >/sys/module/wakelock/parameters/debug_mask
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/card.h>
+#include <linux/earlysuspend.h>
#include <mach/board.h>
#include <mach/rk29_iomap.h>
#include <mach/rk29-dma-pl330.h>
#include <asm/scatterlist.h>
-#include "rk29_sdmmc.h"
-
-
-#define RK29_SDMMC_xbw_Debug 0
-
-#if RK29_SDMMC_xbw_Debug
-int debug_level = 7;
-#define xbwprintk(n, format, arg...) \
- if (n <= debug_level) { \
- printk(format,##arg); \
- }
-#else
-#define xbwprintk(n, arg...)
-#endif
-
-#define RK29_SDMMC_ERROR_FLAGS (SDMMC_INT_FRUN | SDMMC_INT_RTO | SDMMC_INT_HLE )
-
-#define RK29_SDMMC_INTMASK_USEDMA (SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS | SDMMC_INT_CD)
-#define RK29_SDMMC_INTMASK_USEIO (SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS | SDMMC_INT_CD| SDMMC_INT_TXDR | SDMMC_INT_RXDR )
+#include "rk2818-sdmmc.h"
+#define RK29_SDMMC_DATA_ERROR_FLAGS (SDMMC_INT_DRTO | SDMMC_INT_DCRC | SDMMC_INT_HTO | SDMMC_INT_SBE | SDMMC_INT_EBE | SDMMC_INT_FRUN)
+#define RK29_SDMMC_CMD_ERROR_FLAGS (SDMMC_INT_RTO | SDMMC_INT_RCRC | SDMMC_INT_RE | SDMMC_INT_HLE)
+#define RK29_SDMMC_ERROR_FLAGS (RK29_SDMMC_DATA_ERROR_FLAGS | RK29_SDMMC_CMD_ERROR_FLAGS | SDMMC_INT_HLE)
-#define RK29_SDMMC_SEND_START_TIMEOUT 5000 //The time interval from the time SEND_CMD to START_CMD_BIT cleared.
-#define RK29_ERROR_PRINTK_INTERVAL 200 //The time interval between the two printk for the same error.
-#define RK29_SDMMC_WAIT_DTO_INTERNVAL 1500 //The time interval from the CMD_DONE_INT to DTO_INT
-#define RK29_SDMMC_REMOVAL_DELAY 2000 //The time interval from the CD_INT to detect_timer react.
-
-#define RK29_SDMMC_VERSION "Ver.1.14. The last modify date is 2011-06-26,modifyed by XBW."
-
-#define RK29_CTRL_SDMMC_ID 0 //mainly used by SDMMC
-#define RK29_CTRL_SDIO1_ID 1 //mainly used by sdio-wifi
-#define RK29_CTRL_SDIO2_ID 2 //mainly used by sdio-card
-
-#define RK29_SDMMC_NOTIFY_REMOVE_INSERTION /* use sysfs to notify the removal or insertion of sd-card*/
-//#define RK29_SDMMC_LIST_QUEUE /* use list-queue for multi-card*/
+#define RK29_SDMMC_TMO_COUNT 10000
+#define RK29_SDCARD_CLK 48 //48Mhz
+#define RK29_SDIO_CLK 36 //36Mhz
enum {
EVENT_CMD_COMPLETE = 0,
+ EVENT_XFER_COMPLETE,
EVENT_DATA_COMPLETE,
EVENT_DATA_ERROR,
EVENT_XFER_ERROR
};
-
+enum {
+ MRQ_REQUEST_START = 0,
+ MRQ_INT_CMD_DONE, //1
+ MRQ_INT_CMD_ERR, //2
+ MRQ_INT_DATA_DONE, //3
+ MRQ_INT_DATA_ERR, //4
+ MRQ_INT_CD, //5
+ MRQ_INT_SDIO, //6
+ MRQ_HAS_DATA, //7
+ MRQ_HAS_STOP, //8
+ MRQ_CMD_START_TMO, //9
+ MRQ_CMD_START_DONE, //10
+ MRQ_STOP_START_TMO, //11
+ MRQ_STOP_START_DONE, //12
+ MRQ_CLK_START_TMO, //13
+ MRQ_CLK_START_DONE, //14
+ MRQ_RESET_CTRL_ERR, //15
+ MRQ_RESET_CTRL_DONE, //16
+ MRQ_DMA_SET_ERR, //17
+ MRQ_START_DMA, //18
+ MRQ_STOP_DMA, //19
+ MRQ_DMA_DONE, //20
+ MRQ_REQUEST_DONE, //21
+};
enum rk29_sdmmc_state {
STATE_IDLE = 0,
STATE_SENDING_CMD,
+ STATE_SENDING_DATA,
STATE_DATA_BUSY,
STATE_SENDING_STOP,
+ STATE_DATA_ERROR,
};
+#define rk29_sdmmc_test_and_clear_pending(host, event) \
+ test_and_clear_bit(event, &host->pending_events)
+#define rk29_sdmmc_set_completed(host, event) \
+ set_bit(event, &host->completed_events)
+#define rk29_sdmmc_set_pending(host, event) \
+ set_bit(event, &host->pending_events)
+#define rk29_sdmmc_set_mrq_status(host, status) \
+ set_bit(status, &host->mrq_status)
+#define rk29_sdmmc_test_mrq_status(host, status) \
+ test_bit(status, &host->mrq_status)
struct rk29_sdmmc_dma_info {
enum dma_ch chn;
char *name;
struct rk29_dma_client client;
};
-
-static struct rk29_sdmmc_dma_info rk29_sdmmc_dma_infos[]= {
+static struct rk29_sdmmc_dma_info dma_infos[] = {
{
.chn = DMACH_SDMMC,
.client = {
.name = "rk29-dma-sdio1",
}
},
-
- {
- .chn = DMACH_EMMC,
- .client = {
- .name = "rk29-dma-sdio2",
- }
- },
};
-
-
-/* Interrupt Information */
-typedef struct TagSDC_INT_INFO
+static int rk29_sdmmc_is_sdio(struct rk29_sdmmc_platform_data *pdata)
{
- u32 transLen; //the length of data sent.
- u32 desLen; //the total length of the all data.
- u32 *pBuf; //the data buffer for interrupt read or write.
-}SDC_INT_INFO_T;
-
+ if(strncmp(pdata->dma_name, "sdio", strlen("sdio")) == 0)
+ return 1;
+ else
+ return 0;
+}
struct rk29_sdmmc {
- spinlock_t lock;
- void __iomem *regs;
- struct clk *clk;
-
- struct mmc_request *mrq;
- struct mmc_request *new_mrq;
- struct mmc_command *cmd;
- struct mmc_data *data;
-
- dma_addr_t dma_addr;;
- unsigned int use_dma:1;
- char dma_name[8];
- u32 cmd_status;
- u32 data_status;
- u32 stop_cmdr;
-
- u32 old_div;
- u32 cmdr; //the value setted into command-register
- u32 dodma; //sign the DMA used for transfer.
- u32 errorstep;//record the error point.
- u32 *pbuf;
- SDC_INT_INFO_T intInfo;
- struct rk29_sdmmc_dma_info dma_info;
-
- int error_times;
- u32 old_cmd;
+ struct device *dev;
- struct tasklet_struct tasklet;
- unsigned long pending_events;
- unsigned long completed_events;
- enum rk29_sdmmc_state state;
-
-#ifdef RK29_SDMMC_LIST_QUEUE
- struct list_head queue;
- struct list_head queue_node;
-#endif
-
- u32 bus_hz;
- struct platform_device *pdev;
- struct mmc_host *mmc;
- u32 ctype;
- unsigned int clock;
- unsigned long flags;
+ int is_sdio;
+ int is_init;
+ int gpio_det;
+ int gpio_irq;
+ int irq;
+
+ int enable_sd_warkup;
+
+ unsigned int clock;
+ unsigned int ios_clock;
+ unsigned int div;
+ spinlock_t lock;
+ unsigned int stop_cmdr;
+ unsigned int cmd_intsts;
+ unsigned int data_intsts;
+ unsigned long pending_events;
+ unsigned long completed_events;
+ unsigned long mrq_status;
+ unsigned long old_mrq_status;
+
+ unsigned int bus_hz;
-#define RK29_SDMMC_CARD_PRESENT 0
- int id;
+ void __iomem *regs;
- struct timer_list detect_timer;
- struct timer_list request_timer; //the timer for INT_CMD_DONE
- struct timer_list DTO_timer; //the timer for INT_DTO
- struct mmc_command stopcmd;
+ struct mmc_host *mmc;
+ struct delayed_work work;
+ struct rk29_sdmmc_dma_info dma_info;
+ struct tasklet_struct tasklet;
+ struct mmc_request *mrq;
+ struct mmc_command *cmd;
+ struct clk *clk;
+ struct timer_list monitor_timer;
- /* flag for current bus settings */
- u32 bus_mode;
-
- unsigned int oldstatus;
-
-#ifdef CONFIG_PM
- int gpio_irq;
- int gpio_det;
+ enum rk29_sdmmc_state state;
+ dma_addr_t dma_addr;
+
+ int (*get_wifi_cd)(struct device *);
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ struct early_suspend early_suspend;
#endif
};
-
-
-#ifdef RK29_SDMMC_NOTIFY_REMOVE_INSERTION
-static struct rk29_sdmmc *globalSDhost[3];
-#endif
-
-#define rk29_sdmmc_test_and_clear_pending(host, event) \
- test_and_clear_bit(event, &host->pending_events)
-#define rk29_sdmmc_set_completed(host, event) \
- set_bit(event, &host->completed_events)
-
-#define rk29_sdmmc_set_pending(host, event) \
- set_bit(event, &host->pending_events)
-
-static void rk29_sdmmc_start_error(struct rk29_sdmmc *host);
-
+struct rk29_sdmmc *sdio_host = NULL;
static void rk29_sdmmc_write(unsigned char __iomem *regbase, unsigned int regOff,unsigned int val)
{
__raw_writel(val,regbase + regOff);
return __raw_readl(regbase + regOff);
}
-static int rk29_sdmmc_regs_printk(struct rk29_sdmmc *host)
-{
- printk("SDMMC_CTRL: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CTRL));
- printk("SDMMC_PWREN: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_PWREN));
- printk("SDMMC_CLKDIV: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKDIV));
- printk("SDMMC_CLKSRC: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKSRC));
- printk("SDMMC_CLKENA: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKENA));
- printk("SDMMC_TMOUT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TMOUT));
- printk("SDMMC_CTYPE: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CTYPE));
- printk("SDMMC_BLKSIZ: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_BLKSIZ));
- printk("SDMMC_BYTCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_BYTCNT));
- printk("SDMMC_INTMASK:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_INTMASK));
- printk("SDMMC_CMDARG: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CMDARG));
- printk("SDMMC_CMD: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CMD));
- printk("SDMMC_RESP0: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP0));
- printk("SDMMC_RESP1: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP1));
- printk("SDMMC_RESP2: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP2));
- printk("SDMMC_RESP3: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP3));
- printk("SDMMC_MINTSTS:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_MINTSTS));
- printk("SDMMC_RINTSTS:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RINTSTS));
- printk("SDMMC_STATUS: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_STATUS));
- printk("SDMMC_FIFOTH: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_FIFOTH));
- printk("SDMMC_CDETECT:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CDETECT));
- printk("SDMMC_WRTPRT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_WRTPRT));
- printk("SDMMC_TCBCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TCBCNT));
- printk("SDMMC_TBBCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TBBCNT));
- printk("SDMMC_DEBNCE: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_DEBNCE));
- printk("=======printk %s-register end =========\n", host->dma_name);
- return 0;
-}
-
-#ifdef RK29_SDMMC_NOTIFY_REMOVE_INSERTION
-ssize_t rk29_sdmmc_progress_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t count)
+#if defined (CONFIG_DEBUG_FS)
+/*
+ * The debugfs stuff below is mostly optimized away when
+ * CONFIG_DEBUG_FS is not set.
+ */
+static int rk29_sdmmc_req_show(struct seq_file *s, void *v)
{
- struct rk29_sdmmc *host = NULL;
-
- if( !strncmp(buf,"version" , strlen("version")))
- {
- printk("The driver SDMMC named 'rk29_sdmmc.c' is %s. ====xbw====\n", RK29_SDMMC_VERSION);
- return count;
- }
-
- spin_lock(&host->lock);
-
- //envalue the address of host base on input-parameter.
- if( !strncmp(buf,"sd-" , strlen("sd-")) )
- {
- host = (struct rk29_sdmmc *)globalSDhost[RK29_CTRL_SDMMC_ID];
- if(!host)
- {
- printk("%s..%d.. fail to call progress_store because the host is null. ==xbw==\n",__FUNCTION__,__LINE__);
- goto progress_store_out;
- }
- }
- else if( !strncmp(buf,"sdio1-" , strlen("sdio1-")) )
- {
- host = (struct rk29_sdmmc *)globalSDhost[RK29_CTRL_SDIO1_ID];
- if(!host)
- {
- printk("%s..%d.. fail to call progress_store because the host-sdio1 is null. ==xbw==\n",__FUNCTION__,__LINE__);
- goto progress_store_out;
- }
- }
- else if( !strncmp(buf,"sdio2-" , strlen("sdio2-")) )
- {
- host = (struct rk29_sdmmc *)globalSDhost[RK29_CTRL_SDIO2_ID];
- if(!host)
- {
- printk("%s..%d.. fail to call progress_store because the host-sdio2 is null. ==xbw==\n",__FUNCTION__,__LINE__);
- goto progress_store_out;
- }
- }
- else
- {
- printk("%s..%d.. You want to use sysfs for SDMMC but input-parameter is wrong.====xbw====\n",__FUNCTION__,__LINE__);
- goto progress_store_out;//return count;
- }
-
- //printk(".%d.. MMC0 receive the message %s from VOLD.====xbw[%s]====\n", __LINE__, buf, host->dma_name);
-
- /*
- * //deal with the message
- * insert card state-change: No-Media ==> Pending ==> Idle-Unmounted ==> Checking ==>Mounted
- * remove card state-change: Unmounting ==> Idle-Unmounted ==> No-Media
- */
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- if(!strncmp(buf, "sd-Unmounting", strlen("sd-Unmounting")))
- {
- printk(".%d.. MMC0 receive the message State_Unmounting from VOLD.====xbw[%s]====\n", __LINE__, host->dma_name);
- host->mmc->re_initialized_flags = 0;
- mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_REMOVAL_DELAY));
- }
- else if( !strncmp(buf, "sd-No-Media", strlen("sd-No-Media")))
- {
- printk(".%d.. MMC0 receive the message No-Media from VOLD.====xbw[%s]====\n" ,__LINE__, host->dma_name);
- del_timer_sync(&host->detect_timer);
- host->mmc->re_initialized_flags = 1;
-
- if(test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags))
- {
- mmc_detect_change(host->mmc, 0);
- }
- }
- else if( !strncmp(buf, "sd-Ready", strlen("sd-Ready")))
- {
- printk(".%d.. MMC0 receive the message State_Ready(ReInitFlag=%d) from VOLD.====xbw[%s]====\n" ,\
- __LINE__, host->mmc->re_initialized_flags, host->dma_name);
-
- if(0==host->mmc->re_initialized_flags)
- {
- host->mmc->re_initialized_flags = 1;
- //del_timer_sync(&host->detect_timer);
- }
- }
- else if( !strncmp(buf,"sd-reset" , strlen("sd-reset")) )
- {
- printk(".%d.. Now manual reset for SDMMC0. ====xbw[%s]====\n",__LINE__, host->dma_name);
- mmc_detect_change(host->mmc, 0);
- }
- else if( !strncmp(buf, "sd-regs", strlen("sd-regs")))
- {
- printk(".%d.. Now printk the register of SDMMC0. ====xbw[%s]====\n",__LINE__, host->dma_name);
- rk29_sdmmc_regs_printk(host);
- }
-
- }
- else if(RK29_CTRL_SDIO1_ID == host->pdev->id)
- {
- if( !strncmp(buf, "sdio1-regs", strlen("sdio1-regs")))
- {
- printk(".%d.. Now printk the register of SDMMC1. ====xbw[%s]====\n",__LINE__, host->dma_name);
- rk29_sdmmc_regs_printk(host);
- }
- else if( !strncmp(buf,"sdio1-reset" , strlen("sdio1-reset")) )
- {
- printk(".%d.. Now manual reset for SDMMC1. ====xbw[%s]====\n",__LINE__, host->dma_name);
- mmc_detect_change(host->mmc, 0);
- }
- }
- else if(RK29_CTRL_SDIO2_ID == host->pdev->id)
- {
- if( !strncmp(buf, "sdio2-regs", strlen("sdio2-regs")))
- {
- printk(".%d.. Now printk the register of SDMMC2. ====xbw[%s]====\n",__LINE__, host->dma_name);
- rk29_sdmmc_regs_printk(host);
- }
- else if( !strncmp(buf,"sdio2-reset" , strlen("sdio2-reset")) )
- {
- printk(".%d.. Now manual reset for SDMMC2. ====xbw[%s]====\n",__LINE__, host->dma_name);
- mmc_detect_change(host->mmc, 0);
- }
- }
-
-progress_store_out:
- spin_unlock(&host->lock);
-
- return count;
-}
+ struct rk29_sdmmc *host = s->private;
+ struct mmc_request *mrq;
+ struct mmc_command *cmd;
+ struct mmc_command *stop;
+ struct mmc_data *data;
+ /* Make sure we get a consistent snapshot */
+ spin_lock(&host->lock);
+ mrq = host->mrq;
+ if (mrq) {
+ cmd = mrq->cmd;
+ data = mrq->data;
+ stop = mrq->stop;
-struct kobj_attribute mmc_reset_attrs =
-{
- .attr = {
- .name = "rescan",
- .mode = 0777},
- .show = NULL,
- .store = rk29_sdmmc_progress_store,
-};
-struct attribute *mmc_attrs[] =
-{
- &mmc_reset_attrs.attr,
- NULL
-};
+ if (cmd)
+ seq_printf(s,
+ "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
+ cmd->opcode, cmd->arg, cmd->flags,
+ cmd->resp[0], cmd->resp[1], cmd->resp[2],
+ cmd->resp[2], cmd->error);
+ if (data)
+ seq_printf(s, "DATA %u / %u * %u flg %x err %d\n",
+ data->bytes_xfered, data->blocks,
+ data->blksz, data->flags, data->error);
+ if (stop)
+ seq_printf(s,
+ "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
+ stop->opcode, stop->arg, stop->flags,
+ stop->resp[0], stop->resp[1], stop->resp[2],
+ stop->resp[2], stop->error);
+ }
-static struct kobj_type mmc_kset_ktype = {
- .sysfs_ops = &kobj_sysfs_ops,
- .default_attrs = &mmc_attrs[0],
-};
+ spin_unlock(&host->lock);
-static int rk29_sdmmc_progress_add_attr( struct platform_device *pdev )
-{
- int result;
- struct kobject *parentkobject;
- struct kobject * me = kmalloc(sizeof(struct kobject) , GFP_KERNEL );
- if(!me)
- {
- return -ENOMEM;
- }
- memset(me ,0,sizeof(struct kobject));
- kobject_init( me , &mmc_kset_ktype );
-
- parentkobject = &pdev->dev.kobj ;
- result = kobject_add( me , parentkobject->parent->parent->parent,"%s", "sd-sdio" );
-
- return result;
+ return 0;
}
-#endif
-#if defined (CONFIG_DEBUG_FS)
static int rk29_sdmmc_regs_show(struct seq_file *s, void *v)
{
struct rk29_sdmmc *host = s->private;
return 0;
}
-
-/*
- * The debugfs stuff below is mostly optimized away when
- * CONFIG_DEBUG_FS is not set.
- */
-static int rk29_sdmmc_req_show(struct seq_file *s, void *v)
+static int rk29_sdmmc_status_show(struct seq_file *s, void *v)
{
struct rk29_sdmmc *host = s->private;
- struct mmc_request *mrq;
- struct mmc_command *cmd;
- struct mmc_command *stop;
- struct mmc_data *data;
-
- /* Make sure we get a consistent snapshot */
- spin_lock(&host->lock);
- mrq = host->mrq;
-
- if (mrq) {
- cmd = mrq->cmd;
- data = mrq->data;
- stop = mrq->stop;
-
- if (cmd)
- seq_printf(s,
- "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
- cmd->opcode, cmd->arg, cmd->flags,
- cmd->resp[0], cmd->resp[1], cmd->resp[2],
- cmd->resp[2], cmd->error);
- if (data)
- seq_printf(s, "DATA %u / %u * %u flg %x err %d\n",
- data->bytes_xfered, data->blocks,
- data->blksz, data->flags, data->error);
- if (stop)
- seq_printf(s,
- "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
- stop->opcode, stop->arg, stop->flags,
- stop->resp[0], stop->resp[1], stop->resp[2],
- stop->resp[2], stop->error);
- }
- spin_unlock(&host->lock);
+ seq_printf(s, "state: \t\t0x%08x\n", host->state);
+ seq_printf(s, "pending_events: \t0x%08lx\n", host->pending_events);
+ seq_printf(s, "completed_events: \t0x%08lx\n", host->completed_events);
+ seq_printf(s, "mrq_status: \t\t0x%08lx\n", host->mrq_status);
+ seq_printf(s, "old_mrq_status: \t0x%08lx\n", host->old_mrq_status);
return 0;
}
+
static int rk29_sdmmc_req_open(struct inode *inode, struct file *file)
{
return single_open(file, rk29_sdmmc_req_show, inode->i_private);
.release = single_release,
};
-
static int rk29_sdmmc_regs_open(struct inode *inode, struct file *file)
{
return single_open(file, rk29_sdmmc_regs_show, inode->i_private);
.llseek = seq_lseek,
.release = single_release,
};
+static int rk29_sdmmc_status_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, rk29_sdmmc_status_show, inode->i_private);
+}
+
+static const struct file_operations rk29_sdmmc_status_fops = {
+ .owner = THIS_MODULE,
+ .open = rk29_sdmmc_status_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
static void rk29_sdmmc_init_debugfs(struct rk29_sdmmc *host)
{
if (!root)
return;
- node = debugfs_create_file("regs", S_IRUSR, root, host,
- &rk29_sdmmc_regs_fops);
- if (IS_ERR(node))
- return;
+ node = debugfs_create_file("regs", S_IRUSR, root, host,&rk29_sdmmc_regs_fops);
if (!node)
goto err;
if (!node)
goto err;
- node = debugfs_create_u32("state", S_IRUSR, root, (u32 *)&host->state);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("pending_events", S_IRUSR, root,
- (u32 *)&host->pending_events);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("completed_events", S_IRUSR, root,
- (u32 *)&host->completed_events);
+ node = debugfs_create_file("status", S_IRUSR, root, host, &rk29_sdmmc_status_fops);
if (!node)
goto err;
dev_err(&mmc->class_dev, "failed to initialize debugfs for host\n");
}
#endif
-
-
-static u32 rk29_sdmmc_prepare_command(struct mmc_command *cmd)
+static void rk29_sdmmc_show_info(struct rk29_sdmmc *host)
+{
+ dev_info(host->dev, "state: \t\t0x%08x\n", host->state);
+ dev_info(host->dev, "pending_events: \t0x%08lx\n", host->pending_events);
+ dev_info(host->dev, "completed_events: \t0x%08lx\n", host->completed_events);
+ dev_info(host->dev, "mrq_status: \t\t0x%08lx\n\n", host->mrq_status);
+ dev_info(host->dev, "old_mrq_status: \t0x%08lx\n\n", host->old_mrq_status);
+ dev_info(host->dev, "SDMMC_CTRL: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CTRL));
+ dev_info(host->dev, "SDMMC_PWREN: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_PWREN));
+ dev_info(host->dev, "SDMMC_CLKDIV: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKDIV));
+ dev_info(host->dev, "SDMMC_CLKSRC: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKSRC));
+ dev_info(host->dev, "SDMMC_CLKENA: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CLKENA));
+ dev_info(host->dev, "SDMMC_TMOUT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TMOUT));
+ dev_info(host->dev, "SDMMC_CTYPE: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CTYPE));
+ dev_info(host->dev, "SDMMC_BLKSIZ: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_BLKSIZ));
+ dev_info(host->dev, "SDMMC_BYTCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_BYTCNT));
+ dev_info(host->dev, "SDMMC_INTMASK:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_INTMASK));
+ dev_info(host->dev, "SDMMC_CMDARG: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CMDARG));
+ dev_info(host->dev, "SDMMC_CMD: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CMD));
+ dev_info(host->dev, "SDMMC_RESP0: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP0));
+ dev_info(host->dev, "SDMMC_RESP1: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP1));
+ dev_info(host->dev, "SDMMC_RESP2: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP2));
+ dev_info(host->dev, "SDMMC_RESP3: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RESP3));
+ dev_info(host->dev, "SDMMC_MINTSTS:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_MINTSTS));
+ dev_info(host->dev, "SDMMC_RINTSTS:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_RINTSTS));
+ dev_info(host->dev, "SDMMC_STATUS: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_STATUS));
+ dev_info(host->dev, "SDMMC_FIFOTH: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_FIFOTH));
+ dev_info(host->dev, "SDMMC_CDETECT:\t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_CDETECT));
+ dev_info(host->dev, "SDMMC_WRTPRT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_WRTPRT));
+ dev_info(host->dev, "SDMMC_TCBCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TCBCNT));
+ dev_info(host->dev, "SDMMC_TBBCNT: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_TBBCNT));
+ dev_info(host->dev, "SDMMC_DEBNCE: \t0x%08x\n", rk29_sdmmc_read(host->regs, SDMMC_DEBNCE));
+}
+static int rk29_sdmmc_reset_fifo(struct rk29_sdmmc *host)
{
- u32 cmdr = cmd->opcode;
+ int tmo;
+ int retry = RK29_SDMMC_TMO_COUNT;
+ if(!(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & (SDMMC_STAUTS_MC_BUSY|SDMMC_STAUTS_DATA_BUSY)) &&
+ (rk29_sdmmc_read(host->regs, SDMMC_STATUS) & SDMMC_STAUTS_FIFO_EMPTY))
+ return 0;
- switch(cmdr)
+ while(retry--)
{
- case MMC_GO_IDLE_STATE:
- cmdr |= (SDMMC_CMD_INIT | SDMMC_CMD_PRV_DAT_NO_WAIT);
- break;
-
- case MMC_STOP_TRANSMISSION:
- cmdr |= (SDMMC_CMD_STOP | SDMMC_CMD_PRV_DAT_NO_WAIT);
- break;
- case MMC_SEND_STATUS:
- case MMC_GO_INACTIVE_STATE:
- cmdr |= SDMMC_CMD_PRV_DAT_NO_WAIT;
- break;
-
- default:
- cmdr |= SDMMC_CMD_PRV_DAT_WAIT;
- break;
+ tmo = RK29_SDMMC_TMO_COUNT;
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL, rk29_sdmmc_read(host->regs, SDMMC_CTRL) | SDMMC_CTRL_FIFO_RESET);
+ while (--tmo && rk29_sdmmc_read(host->regs, SDMMC_CTRL) & SDMMC_CTRL_FIFO_RESET);
+ if(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & (SDMMC_STAUTS_MC_BUSY|SDMMC_STAUTS_DATA_BUSY))
+ udelay(5);
+ else
+ break;
}
-
- /* response type */
- switch(mmc_resp_type(cmd))
- {
- case MMC_RSP_R1:
- case MMC_RSP_R1B:
- // case MMC_RSP_R5: //R5,R6,R7 is same with the R1
- //case MMC_RSP_R6:
- // case R6m_TYPE:
- // case MMC_RSP_R7:
- cmdr |= (SDMMC_CMD_RESP_CRC | SDMMC_CMD_RESP_SHORT | SDMMC_CMD_RESP_EXP);
- break;
- case MMC_RSP_R3:
- //case MMC_RSP_R4:
- /* these response not contain crc7, so don't care crc error and response error */
- cmdr |= (SDMMC_CMD_RESP_NO_CRC | SDMMC_CMD_RESP_SHORT | SDMMC_CMD_RESP_EXP);
- break;
- case MMC_RSP_R2:
- cmdr |= (SDMMC_CMD_RESP_CRC | SDMMC_CMD_RESP_LONG | SDMMC_CMD_RESP_EXP);
- break;
- case MMC_RSP_NONE:
- cmdr |= (SDMMC_CMD_RESP_CRC_NOCARE | SDMMC_CMD_RESP_NOCARE | SDMMC_CMD_RESP_NO_EXP);
- break;
- default:
- cmdr |= (SDMMC_CMD_RESP_CRC_NOCARE | SDMMC_CMD_RESP_NOCARE | SDMMC_CMD_RESP_NO_EXP);
- break;
+ if(retry <= 0){
+ dev_dbg(host->dev, "%s error\n", __func__);
+ return -1;
}
-
- return cmdr;
+ else
+ return 0;
}
-
-
-static int rk29_sdmmc_start_command(struct rk29_sdmmc *host, struct mmc_command *cmd, u32 cmd_flags)
+static int rk29_sdmmc_reset_ctrl(struct rk29_sdmmc *host)
{
- int tmo = RK29_SDMMC_SEND_START_TIMEOUT;
-
- host->cmd = cmd;
- host->old_cmd = cmd->opcode;
-
- rk29_sdmmc_write(host->regs, SDMMC_CMDARG, cmd->arg); // write to SDMMC_CMDARG register
- rk29_sdmmc_write(host->regs, SDMMC_CMD, cmd_flags | SDMMC_CMD_START); // write to SDMMC_CMD register
+ int tmo = RK29_SDMMC_TMO_COUNT;
+ /*
+ if(!(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & (SDMMC_STAUTS_MC_BUSY|SDMMC_STAUTS_DATA_BUSY)))
+ return 0;
+ */
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL, (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET));
+ while (--tmo && rk29_sdmmc_read(host->regs, SDMMC_CTRL) & (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET));
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL, rk29_sdmmc_read(host->regs, SDMMC_CTRL) | SDMMC_CTRL_INT_ENABLE);
+
+ if(tmo > 0) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_RESET_CTRL_DONE);
+ host->is_init = 1;
+ return 0;
+ }
+ else {
+ rk29_sdmmc_set_mrq_status(host, MRQ_RESET_CTRL_ERR);
+ dev_err(host->dev, "%s error\n", __func__);
+ return -1;
+ }
+}
+static int rk29_sdmmc_start_command(struct rk29_sdmmc *host,
+ struct mmc_command *cmd, u32 cmd_flags)
+{
+ int tmo = RK29_SDMMC_TMO_COUNT;
+ unsigned long flags;
- xbwprintk(5, "\n%s..%d..************.start cmd=%d, arg=0x%x ********=====xbw[%s]=======\n", \
- __FUNCTION__, __LINE__, cmd->opcode, cmd->arg, host->dma_name);
+ local_irq_save(flags);
+
+ rk29_sdmmc_write(host->regs, SDMMC_CMDARG, cmd->arg);
+ rk29_sdmmc_write(host->regs, SDMMC_CMD, cmd_flags | SDMMC_CMD_START);
+ local_irq_restore(flags);
- /* wait until CIU accepts the command */
- while (--tmo && (rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START))
- {
+ while (--tmo && rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START)
cpu_relax();
- }
-
- if(!tmo)
- {
- printk("%s..%d.. wait for CMD_START timeout!!!!!======xbw[%s]======\n",\
- __FUNCTION__,__LINE__, host->dma_name);
+ if(tmo > 0)
+ return 0;
+ else
+ return -1;
+}
- cmd->error = -ETIMEDOUT;
- host->mrq->cmd->error = -ETIMEDOUT;
- del_timer_sync(&host->request_timer);
-
- host->errorstep = 0x1;
- return SDM_WAIT_FOR_CMDSTART_TIMEOUT;
+static int send_stop_cmd(struct rk29_sdmmc *host)
+{
+ dev_dbg(host->dev,"start cmd:%d ARGR=0x%08x CMDR=0x%08x\n",
+ host->mrq->data->stop->opcode, host->mrq->data->stop->arg, host->stop_cmdr);
+ if(rk29_sdmmc_start_command(host, host->mrq->data->stop, host->stop_cmdr)) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_STOP_START_TMO);
+ return -1;
+ }
+ else {
+ rk29_sdmmc_set_mrq_status(host, MRQ_STOP_START_DONE);
+ return 0;
}
-
- return SDM_SUCCESS;
}
-
-static int rk29_sdmmc_reset_fifo(struct rk29_sdmmc *host)
+static void rk29_sdmmc_dma_cleanup(struct rk29_sdmmc *host)
{
- u32 value;
- int timeout;
- int ret = SDM_SUCCESS;
-
- value = rk29_sdmmc_read(host->regs, SDMMC_STATUS);
- if (!(value & SDMMC_STAUTS_FIFO_EMPTY))
- {
- value = rk29_sdmmc_read(host->regs, SDMMC_CTRL);
- value |= SDMMC_CTRL_FIFO_RESET;
- rk29_sdmmc_write(host->regs, SDMMC_CTRL, value);
-
- timeout = 1000;
- while (((value = rk29_sdmmc_read(host->regs, SDMMC_CTRL)) & (SDMMC_CTRL_FIFO_RESET)) && (timeout > 0))
- {
- udelay(1);
- timeout--;
- }
- if (timeout == 0)
- {
- host->errorstep = 0x2;
- ret = SDM_WAIT_FOR_FIFORESET_TIMEOUT;
- }
- }
-
- return ret;
-
+ struct mmc_data *data = host->mrq->data;
+ if (data)
+ dma_unmap_sg(host->dev, data->sg, data->sg_len,
+ ((data->flags & MMC_DATA_WRITE)
+ ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
}
-static int rk29_sdmmc_wait_unbusy(struct rk29_sdmmc *host)
+static void rk29_sdmmc_stop_dma(struct rk29_sdmmc *host)
{
- int time_out = 250000; //max is 250ms
+ int ret = 0;
+ rk29_sdmmc_set_mrq_status(host, MRQ_STOP_DMA);
+ rk29_sdmmc_dma_cleanup(host);
+ ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_STOP);
+ if(ret < 0)
+ dev_err(host->dev, "stop dma:rk29_dma_ctrl stop error\n");
+ ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_FLUSH);
+ if(ret < 0)
+ dev_err(host->dev, "stop dma:rk29_dma_ctrl flush error\n");
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL,
+ (rk29_sdmmc_read(host->regs, SDMMC_CTRL))&(~SDMMC_CTRL_DMA_ENABLE));
+}
- while (rk29_sdmmc_read(host->regs, SDMMC_STATUS) & SDMMC_STAUTS_DATA_BUSY)
- {
- udelay(1);
- time_out--;
+static void rk29_sdmmc_request_done(struct rk29_sdmmc *host,struct mmc_request *mrq)
+{
+ int tmo = RK29_SDMMC_TMO_COUNT;
- if(time_out == 0)
- {
- host->errorstep = 0x3;
- return SDM_BUSY_TIMEOUT;
- }
+ spin_unlock(&host->lock);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, ~SDMMC_INT_SDIO);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK,
+ rk29_sdmmc_read(host->regs, SDMMC_INTMASK) &
+ ~(SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS));
+
+ if(!rk29_sdmmc_test_mrq_status(host, MRQ_STOP_DMA) &&
+ rk29_sdmmc_test_mrq_status(host, MRQ_START_DMA))
+ rk29_sdmmc_stop_dma(host);
+ if(mrq->stop && !rk29_sdmmc_test_mrq_status(host, MRQ_STOP_START_DONE))
+ send_stop_cmd(host);
+ if(mrq->cmd->opcode == 17 && (host->data_intsts & SDMMC_INT_SBE)){
+ rk29_sdmmc_write(host->regs, SDMMC_CMD, 12|SDMMC_CMD_STOP | SDMMC_CMD_START);
+ while (--tmo && rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START);
}
-
- return SDM_SUCCESS;
+ if(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & SDMMC_STAUTS_FIFO_FULL ){
+ rk29_sdmmc_read(host->regs, SDMMC_DATA);
+ rk29_sdmmc_read(host->regs, SDMMC_DATA);
+ }
+ //if(mrq->data && mrq->data->error)
+ rk29_sdmmc_reset_fifo(host);
+
+ host->mrq = NULL;
+ host->state = STATE_IDLE;
+ rk29_sdmmc_set_mrq_status(host, MRQ_REQUEST_DONE);
+ mmc_request_done(host->mmc, mrq);
+ del_timer(&host->monitor_timer);
+
+ spin_lock(&host->lock);
}
-static void send_stop_cmd(struct rk29_sdmmc *host)
+static int sdmmc_send_cmd(struct rk29_sdmmc *host, unsigned int cmd, int arg)
{
- mod_timer(&host->request_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_SEND_START_TIMEOUT+2500));
-
- host->stopcmd.opcode = MMC_STOP_TRANSMISSION;
- host->stopcmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;;
- host->stopcmd.arg = 0;
- host->stopcmd.data = NULL;
- host->stopcmd.mrq = NULL;
- host->stopcmd.retries = host->cmd->retries;
-
- host->cmdr = rk29_sdmmc_prepare_command(&host->stopcmd);
- rk29_sdmmc_start_command(host, &host->stopcmd, host->cmdr);
+ int tmo = RK29_SDMMC_TMO_COUNT;
+ rk29_sdmmc_write(host->regs, SDMMC_CMDARG, arg);
+ rk29_sdmmc_write(host->regs, SDMMC_CMD, SDMMC_CMD_START | cmd);
+ while (--tmo && readl(host->regs + SDMMC_CMD) & SDMMC_CMD_START);
+ if(tmo > 0)
+ return 0;
+ else
+ return -1;
}
-static void rk29_sdmmc_dma_cleanup(struct rk29_sdmmc *host)
+int rk29_sdmmc_set_clock(struct rk29_sdmmc *host)
{
- if (host->data)
- {
- dma_unmap_sg(&host->pdev->dev, host->data->sg, host->data->sg_len,
- ((host->data->flags & MMC_DATA_WRITE)
- ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
- }
+ unsigned int div;
+ if(!host->ios_clock)
+ return 0;
+ div = (((host->bus_hz + (host->bus_hz / 5)) / host->ios_clock)) >> 1;
+/*
+ if(div == 0)
+ div = 1;
+*/
+ if(host->div == div)
+ return 0;
+
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA, 0);
+ rk29_sdmmc_write(host->regs, SDMMC_CLKSRC,0);
+ if(sdmmc_send_cmd(host, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0))
+ goto send_cmd_err;
+ rk29_sdmmc_write(host->regs, SDMMC_CLKDIV, div);
+ host->div = div;
+ host->clock = (div == 0)? host->bus_hz :(host->bus_hz / div) >> 1;
+ if(sdmmc_send_cmd(host, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0))
+ goto send_cmd_err;
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA, SDMMC_CLKEN_ENABLE);
+ if(sdmmc_send_cmd(host, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0))
+ goto send_cmd_err;
+
+ rk29_sdmmc_set_mrq_status(host, MRQ_CLK_START_DONE);
+ return 0;
+send_cmd_err:
+ rk29_sdmmc_set_mrq_status(host, MRQ_CLK_START_TMO);
+ return -1;
}
-static void rk29_sdmmc_stop_dma(struct rk29_sdmmc *host)
+static void rk29_sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
- int ret = 0;
-
- if(host->use_dma == 0)
- return;
-
- if (host->dma_info.chn> 0)
- {
- rk29_sdmmc_dma_cleanup(host);
-
- ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_STOP);
- if(ret < 0)
- {
- printk("%s..%d...rk29_dma_ctrl STOP error!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x95;
- return;
- }
+ struct rk29_sdmmc *host = mmc_priv(mmc);;
- ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_FLUSH);
- if(ret < 0)
- {
- printk("%s..%d...rk29_dma_ctrl FLUSH error!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x96;
- return;
- }
-
- }
- else
- {
- /* Data transfer was stopped by the interrupt handler */
- rk29_sdmmc_set_pending(host, EVENT_DATA_COMPLETE);
+
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ rk29_sdmmc_write(host->regs, SDMMC_CTYPE, 0);
+ break;
+ case MMC_BUS_WIDTH_4:
+ rk29_sdmmc_write(host->regs, SDMMC_CTYPE, SDMMC_CTYPE_4BIT);
+ break;
+ }
+ host->ios_clock = ios->clock;
+
+ switch (ios->power_mode) {
+ case MMC_POWER_UP:
+ host->is_init = 1;
+ rk29_sdmmc_write(host->regs, SDMMC_PWREN, 1);
+ break;
+ default:
+ break;
}
}
-static void rk29_sdmmc_control_host_dma(struct rk29_sdmmc *host, bool enable)
+static int rk29_sdmmc_get_ro(struct mmc_host *mmc)
{
- u32 value = rk29_sdmmc_read(host->regs, SDMMC_CTRL);
-
- if (enable)
- {
- value |= SDMMC_CTRL_DMA_ENABLE;
- }
- else
- {
- value &= ~(SDMMC_CTRL_DMA_ENABLE);
- }
+ struct rk29_sdmmc *host = mmc_priv(mmc);
+ u32 wrtprt = rk29_sdmmc_read(host->regs, SDMMC_WRTPRT);
- rk29_sdmmc_write(host->regs, SDMMC_CTRL, value);
+ return (wrtprt & SDMMC_WRITE_PROTECT)?1:0;
}
-/* This function is called by the DMA driver from tasklet context. */
-static void rk29_sdmmc_dma_complete(void *arg, int size, enum rk29_dma_buffresult result)
-{
- struct rk29_sdmmc *host = arg;
-
- if(host->use_dma == 0)
- return;
-
- host->intInfo.transLen = host->intInfo.desLen;
-}
-
-static int rk29_sdmmc_submit_data_dma(struct rk29_sdmmc *host, struct mmc_data *data)
+static int rk29_sdmmc_get_cd(struct mmc_host *mmc)
{
- struct scatterlist *sg;
- unsigned int i,direction, sgDirection;
- int ret, dma_len=0;
-
- if(host->use_dma == 0)
- {
- printk("%s..%d...setup DMA fail!!!!!!. host->use_dma=0 ===xbw=[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x4;
- return -ENOSYS;
- }
- /* If we don't have a channel, we can't do DMA */
- if (host->dma_info.chn < 0)
- {
- printk("%s..%d...setup DMA fail!!!!!!!. dma_info.chn < 0 ===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x5;
- return -ENODEV;
- }
+ struct rk29_sdmmc *host = mmc_priv(mmc);
- if (data->blksz & 3)
- return -EINVAL;
- for_each_sg(data->sg, sg, data->sg_len, i)
- {
- if (sg->offset & 3 || sg->length & 3)
- {
- printk("%s..%d...call for_each_sg() fail !!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x7;
- return -EINVAL;
- }
- }
- if (data->flags & MMC_DATA_READ)
- {
- direction = RK29_DMASRC_HW;
- sgDirection = DMA_FROM_DEVICE;
- }
+ if(host->is_sdio)
+ return host->get_wifi_cd(mmc_dev(host->mmc));
+ else if(host->gpio_det == INVALID_GPIO)
+ return 1;
else
- {
- direction = RK29_DMASRC_MEM;
- sgDirection = DMA_TO_DEVICE;
- }
-
- ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_STOP);
- if(ret < 0)
- {
- printk("%s..%d...rk29_dma_ctrl stop error!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x91;
- return -ENOSYS;
- }
-
- ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_FLUSH);
- if(ret < 0)
- {
- printk("%s..%d...rk29_dma_ctrl flush error!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x91;
- return -ENOSYS;
- }
-
-
- ret = rk29_dma_devconfig(host->dma_info.chn, direction, (unsigned long )(host->dma_addr));
- if(0 != ret)
- {
- printk("%s..%d...call rk29_dma_devconfig() fail !!!!===xbw=[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x8;
- return -ENOSYS;
- }
-
- dma_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, sgDirection);
- for (i = 0; i < dma_len; i++)
- {
- ret = rk29_dma_enqueue(host->dma_info.chn, host, sg_dma_address(&data->sg[i]),sg_dma_len(&data->sg[i]));
- if(ret < 0)
- {
- printk("%s..%d...call rk29_dma_devconfig() fail !!!!===xbw=[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x93;
- return -ENOSYS;
- }
- }
-
- rk29_sdmmc_control_host_dma(host, TRUE);// enable dma
- ret = rk29_dma_ctrl(host->dma_info.chn, RK29_DMAOP_START);
- if(ret < 0)
- {
- printk("%s..%d...rk29_dma_ctrl start error!===xbw[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- host->errorstep = 0x94;
- return -ENOSYS;
- }
-
- return 0;
+ return gpio_get_value(host->gpio_det)?0:1;
}
-
-static int rk29_sdmmc_prepare_write_data(struct rk29_sdmmc *host, struct mmc_data *data)
-{
- //uint32 value;
- int output;
- u32 i = 0;
- u32 dataLen;
- u32 count, *pBuf = (u32 *)host->pbuf;
-
- output = SDM_SUCCESS;
- dataLen = data->blocks*data->blksz;
-
- host->dodma = 0; //DMA still no request;
-
- //SDMMC controller request the data is multiple of 4.
- count = (dataLen >> 2) + ((dataLen & 0x3) ? 1:0);
-
- if (count <= FIFO_DEPTH)
- {
- for (i=0; i<count; i++)
- {
- rk29_sdmmc_write(host->regs, SDMMC_DATA, pBuf[i]);
- }
- }
- else
- {
- host->intInfo.desLen = count;
- host->intInfo.transLen = 0;
- host->intInfo.pBuf = (u32 *)pBuf;
-
- if(0)//(host->intInfo.desLen <= 512 )
- {
- //ʹÓÃpioģʽ
- return SDM_SUCCESS;
- }
- else
- {
- xbwprintk(3, "%s..%d... trace data, ======xbw=[%s]====\n", __FUNCTION__, __LINE__, host->dma_name);
- output = rk29_sdmmc_submit_data_dma(host, data);
- if(output)
- {
- host->dodma = 0;
-
- printk("%s..%d... CMD%d setupDMA failure!!!!! ==xbw[%s]==\n", \
- __FUNCTION__, __LINE__, host->cmd->opcode, host->dma_name);
-
- host->errorstep = 0x81;
-
- rk29_sdmmc_control_host_dma(host, FALSE);
- }
- else
- {
- host->dodma = 1;
- }
- }
-
- }
-
- return output;
-}
-
-
-
-
-static int rk29_sdmmc_prepare_read_data(struct rk29_sdmmc *host, struct mmc_data *data)
+static inline unsigned ns_to_clocks(unsigned clkrate, unsigned ns)
{
- u32 count = 0;
- u32 dataLen;
- int output;
-
- output = SDM_SUCCESS;
- dataLen = data->blocks*data->blksz;
-
- host->dodma = 0;//DMA still no request;
-
- //SDMMC controller request the data is multiple of 4.
- count = (dataLen >> 2) ;//+ ((dataLen & 0x3) ? 1:0);
-
- host->intInfo.desLen = (dataLen >> 2);
- host->intInfo.transLen = 0;
- host->intInfo.pBuf = (u32 *)host->pbuf;
-
- if (count > (RX_WMARK+1)) //datasheet error.actually, it can nont waken the interrupt when less and equal than RX_WMARK+1
- {
- if(0) //(host->intInfo.desLen <= 512 )
- {
- //ʹÓÃpioģʽ
- return SDM_SUCCESS;
- }
- else
- {
- output = rk29_sdmmc_submit_data_dma(host, data);
- if(output)
- {
- host->dodma = 0;
-
- printk("%s..%d... CMD%d setupDMA failure!!! ==xbw[%s]==\n", \
- __FUNCTION__, __LINE__, host->cmd->opcode, host->dma_name);
-
- host->errorstep = 0x82;
-
- rk29_sdmmc_control_host_dma(host, FALSE);
- }
- else
- {
- host->dodma = 1;
- }
- }
- }
-
- return output;
-}
-
-
+ u32 clks;
+ if (clkrate > 1000000)
+ clks = (ns * (clkrate / 1000000) + 999) / 1000;
+ else
+ clks = ((ns/1000) * (clkrate / 1000) + 999) / 1000;
-static int rk29_sdmmc_read_remain_data(struct rk29_sdmmc *host, u32 originalLen, void *pDataBuf)
-{
- u32 value = 0;
-
- u32 i = 0;
- u32 *pBuf = (u32 *)pDataBuf;
- u8 *pByteBuf = (u8 *)pDataBuf;
- u32 lastData = 0;
-
- //SDMMC controller must be multiple of 32. so if transfer 13, then actuall we should write or read 16 byte.
- u32 count = (originalLen >> 2) + ((originalLen & 0x3) ? 1:0);
-
- if(1 == host->dodma)
- {
- //when use DMA, there are remain data only when datalen/4 less than RX_WMARK+1 same as equaltion. or not multiple of 4
- if (!((value = rk29_sdmmc_read(host->regs, SDMMC_STATUS)) & SDMMC_STAUTS_FIFO_EMPTY))
- {
- if (count <= (RX_WMARK+1))
- {
- i = 0;
- while ((i<(originalLen >> 2))&&(!(value & SDMMC_STAUTS_FIFO_EMPTY)))
- {
- pBuf[i++] = rk29_sdmmc_read(host->regs, SDMMC_DATA);
- value = rk29_sdmmc_read(host->regs, SDMMC_STATUS);
- }
- }
-
- if (count > (originalLen >> 2))
- {
- lastData = rk29_sdmmc_read(host->regs, SDMMC_DATA);
-
- //fill the 1 to 3 byte.
- for (i=0; i<(originalLen & 0x3); i++)
- {
- pByteBuf[(originalLen & 0xFFFFFFFC) + i] = (u8)((lastData >> (i << 3)) & 0xFF); //default little-endian
- }
- }
- }
- }
- else
- {
- if (!((value = rk29_sdmmc_read(host->regs, SDMMC_STATUS)) & SDMMC_STAUTS_FIFO_EMPTY))
- {
- while ( (host->intInfo.transLen < host->intInfo.desLen) && (!(value & SDMMC_STAUTS_FIFO_EMPTY)) )
- {
- pBuf[host->intInfo.transLen++] = rk29_sdmmc_read(host->regs, SDMMC_DATA);
- value = rk29_sdmmc_read(host->regs, SDMMC_STATUS);
- }
-
- if (count > (originalLen >> 2))
- {
- lastData = rk29_sdmmc_read(host->regs, SDMMC_DATA);
-
- //fill the 1 to 3 byte.
- for (i=0; i<(originalLen & 0x3); i++)
- {
- pByteBuf[(originalLen & 0xFFFFFFFC) + i] = (u8)((lastData >> (i << 3)) & 0xFF); //default little-endian
- }
- }
- }
- }
-
- return SDM_SUCCESS;
+ return clks;
}
-
-static void rk29_sdmmc_do_pio_read(struct rk29_sdmmc *host)
+static void rk29_sdmmc_set_timeout(struct rk29_sdmmc *host,struct mmc_data *data)
{
- int i;
- for (i=0; i<(RX_WMARK+1); i++)
- {
- host->intInfo.pBuf[host->intInfo.transLen + i] = rk29_sdmmc_read(host->regs, SDMMC_DATA);
- }
- host->intInfo.transLen += (RX_WMARK+1);
+ unsigned timeout;
+ unsigned int clock;
+
+ if(host->div == -1)
+ return;
+ else if(host->div == 0)
+ clock = host->bus_hz;
+ else
+ clock = (host->bus_hz / host->div) >> 1;
+ timeout = ns_to_clocks(clock, data->timeout_ns) + data->timeout_clks;
+ rk29_sdmmc_write(host->regs, SDMMC_TMOUT, 0xffffffff);
+ //rk29_sdmmc_write(host->regs, SDMMC_TMOUT, (timeout << 8) | (70));
}
-
-static void rk29_sdmmc_do_pio_write(struct rk29_sdmmc *host)
+static u32 rk29_sdmmc_prepare_command(struct mmc_host *mmc,
+ struct mmc_command *cmd)
{
- int i;
- if ( (host->intInfo.desLen - host->intInfo.transLen) > (FIFO_DEPTH - TX_WMARK) )
- {
- for (i=0; i<(FIFO_DEPTH - TX_WMARK); i++)
- {
- rk29_sdmmc_write(host->regs, SDMMC_DATA, host->intInfo.pBuf[host->intInfo.transLen + i]);
- }
- host->intInfo.transLen += (FIFO_DEPTH - TX_WMARK);
- }
- else
- {
- for (i=0; i<(host->intInfo.desLen - host->intInfo.transLen); i++)
- {
- rk29_sdmmc_write(host->regs, SDMMC_DATA, host->intInfo.pBuf[host->intInfo.transLen + i]);
- }
- host->intInfo.transLen = host->intInfo.desLen;
- }
-
-}
+ struct mmc_data *data;
+ u32 cmdr;
+
+ cmd->error = -EINPROGRESS;
+ cmdr = cmd->opcode;
+ if(cmdr == 12)
+ cmdr |= SDMMC_CMD_STOP;
+ else if(cmdr == 13)
+ cmdr &= ~SDMMC_CMD_PRV_DAT_WAIT;
+ else
+ cmdr |= SDMMC_CMD_PRV_DAT_WAIT;
-static void rk29_sdmmc_submit_data(struct rk29_sdmmc *host, struct mmc_data *data)
-{
- int ret;
-
- if(data)
- {
- host->data = data;
- data->error = 0;
-
- data->bytes_xfered = 0;
- host->pbuf = (u32*)sg_virt(data->sg);
-
- if (data->flags & MMC_DATA_STREAM)
- {
- host->cmdr |= SDMMC_CMD_STRM_MODE; //set stream mode
- }
- else
- {
- host->cmdr |= SDMMC_CMD_BLOCK_MODE; //set block mode
- }
+ if (cmd->flags & MMC_RSP_PRESENT) {
+ cmdr |= SDMMC_CMD_RESP_EXP; // expect the respond, need to set this bit
+ if (cmd->flags & MMC_RSP_136)
+ cmdr |= SDMMC_CMD_RESP_LONG; // expect long respond
- //set the blocks and blocksize
- rk29_sdmmc_write(host->regs, SDMMC_BYTCNT,data->blksz*data->blocks);
- rk29_sdmmc_write(host->regs, SDMMC_BLKSIZ,data->blksz);
-
- xbwprintk(3, "%s..%d... trace data, CMD%d, data->blksz=%d, data->blocks=%d ======xbw=[%s]====\n", \
- __FUNCTION__, __LINE__, host->cmd->opcode,data->blksz, data->blocks, host->dma_name);
-
- if (data->flags & MMC_DATA_WRITE)
- {
- host->cmdr |= (SDMMC_CMD_DAT_WRITE | SDMMC_CMD_DAT_EXP);
- xbwprintk(3, "%s..%d... write data, len=%d ======xbw=[%s]====\n", \
- __FUNCTION__, __LINE__, data->blksz*data->blocks, host->dma_name);
-
- ret = rk29_sdmmc_prepare_write_data(host, data);
- }
- else
- {
- host->cmdr |= (SDMMC_CMD_DAT_READ | SDMMC_CMD_DAT_EXP);
- xbwprintk(3, "%s..%d... read data len=%d ======xbw=[%s]====\n", \
- __FUNCTION__, __LINE__, data->blksz*data->blocks, host->dma_name);
-
- ret = rk29_sdmmc_prepare_read_data(host, data);
- }
-
- }
- else
- {
- rk29_sdmmc_write(host->regs, SDMMC_BLKSIZ, 0);
- rk29_sdmmc_write(host->regs, SDMMC_BYTCNT, 0);
- }
-}
-
-
-static int sdmmc_send_cmd_start(struct rk29_sdmmc *host, unsigned int cmd)
-{
- int tmo = 1000;
-
- rk29_sdmmc_write(host->regs, SDMMC_CMD, SDMMC_CMD_START | cmd);
- while (--tmo && readl(host->regs + SDMMC_CMD) & SDMMC_CMD_START)
- {
- cpu_relax();
+ if(cmd->flags & MMC_RSP_CRC)
+ cmdr |= SDMMC_CMD_RESP_CRC;
}
-
- if(!tmo)
- {
- printk("%s.. %d set cmd(value=0x%x) register timeout error ! ====xbw[%s]====\n",\
- __FUNCTION__,__LINE__, cmd, host->dma_name);
- host->errorstep = 0x9;
- return SDM_START_CMD_FAIL;
+ data = cmd->data;
+ if (data) {
+ cmdr |= SDMMC_CMD_DAT_EXP;
+ if (data->flags & MMC_DATA_STREAM)
+ cmdr |= SDMMC_CMD_STRM_MODE; // set stream mode
+ if (data->flags & MMC_DATA_WRITE)
+ cmdr |= SDMMC_CMD_DAT_WR;
}
-
- return SDM_SUCCESS;
-}
-
-static int rk29_sdmmc_get_cd(struct mmc_host *mmc)
-{
- struct rk29_sdmmc *host = mmc_priv(mmc);
- u32 cdetect;
-
-#ifdef CONFIG_PM
- if(host->gpio_det == INVALID_GPIO)
- return 1;
-#endif
-
- cdetect = rk29_sdmmc_read(host->regs, SDMMC_CDETECT);
-
- return (cdetect & SDMMC_CARD_DETECT_N)?0:1;
+ return cmdr;
}
-
-
-/****************************************************************/
-//reset the SDMMC controller of the current host
-/****************************************************************/
-int rk29_sdmmc_reset_controller(struct rk29_sdmmc *host)
+static int rk29_sdmmc_submit_data(struct rk29_sdmmc *host, struct mmc_data *data)
{
- u32 value = 0;
- int timeOut = 0;
-
- rk29_sdmmc_write(host->regs, SDMMC_PWREN, POWER_ENABLE);
-
- /* reset SDMMC IP */
- //SDPAM_SDCClkEnable(host, TRUE);
-
- //Clean the fifo.
- for(timeOut=0; timeOut<FIFO_DEPTH; timeOut++)
- {
- if(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & SDMMC_STAUTS_FIFO_EMPTY)
- break;
-
- value = rk29_sdmmc_read(host->regs, SDMMC_DATA);
- }
-
- /* reset */
- rk29_sdmmc_write(host->regs, SDMMC_CTRL,(SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET ));
-
- timeOut = 1000;
- value = rk29_sdmmc_read(host->regs, SDMMC_CTRL);
- while (( value & (SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_RESET)) && (timeOut > 0))
- {
- udelay(1);
- timeOut--;
- value = rk29_sdmmc_read(host->regs, SDMMC_CTRL);
- }
-
- if (timeOut == 0)
- {
- printk("%s..%s..%d.. reset controller fail!!! =====xbw[%s]=====\n",\
- __FILE__, __FUNCTION__,__LINE__, host->dma_name);
-
- host->errorstep = 0x0A;
- return SDM_WAIT_FOR_FIFORESET_TIMEOUT;
- }
-
- /* FIFO threshold settings */
- rk29_sdmmc_write(host->regs, SDMMC_FIFOTH, (SD_MSIZE_16 | (RX_WMARK << RX_WMARK_SHIFT) | (TX_WMARK << TX_WMARK_SHIFT)));
-
- rk29_sdmmc_write(host->regs, SDMMC_CTYPE, SDMMC_CTYPE_1BIT);
- rk29_sdmmc_write(host->regs, SDMMC_CLKSRC, CLK_DIV_SRC_0);
- /* config debounce */
- host->bus_hz = clk_get_rate(host->clk);
- if((host->bus_hz > 52000000) || (host->bus_hz <= 0))
- {
- printk("%s..%s..%d..****Error!!!!!! Bus clock %d hz is beyond the prescribed limits ====xbw[%s]===\n",\
- __FILE__, __FUNCTION__,__LINE__,host->bus_hz, host->dma_name);
-
- host->errorstep = 0x0B;
- return SDM_PARAM_ERROR;
- }
-
- rk29_sdmmc_write(host->regs, SDMMC_DEBNCE, (DEBOUNCE_TIME*host->bus_hz)&0xFFFFFF);
-
- /* config interrupt */
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, 0xFFFFFFFF);
+ struct scatterlist *sg;
+ unsigned int i,direction;
+ int dma_len=0, ret = 0;
- if(host->use_dma)
- {
- if(0 == host->pdev->id)
- {
- rk29_sdmmc_write(host->regs, SDMMC_INTMASK,RK29_SDMMC_INTMASK_USEDMA);
- }
- else
- {
- rk29_sdmmc_write(host->regs, SDMMC_INTMASK,RK29_SDMMC_INTMASK_USEDMA | SDMMC_INT_SDIO);
+ if (data->blksz & 3){
+ dev_info(host->dev, "data->blksz = %d\n", data->blksz);
+ return -EINVAL;
+ }
+ for_each_sg(data->sg, sg, data->sg_len, i) {
+ if (sg->offset & 3 || sg->length & 3){
+ dev_info(host->dev, "sg->offset = %d, sg->length = %d\n",
+ sg->offset, sg->length);
+ return -EINVAL;
}
}
+ if (data->flags & MMC_DATA_READ)
+ direction = RK29_DMASRC_HW;
else
- {
- if(0 == host->pdev->id)
- {
- rk29_sdmmc_write(host->regs, SDMMC_INTMASK,RK29_SDMMC_INTMASK_USEIO);
- }
- else
- {
- rk29_sdmmc_write(host->regs, SDMMC_INTMASK,RK29_SDMMC_INTMASK_USEIO | SDMMC_INT_SDIO);
- }
- }
-
- rk29_sdmmc_write(host->regs, SDMMC_PWREN, POWER_ENABLE);
+ direction = RK29_DMASRC_MEM;
- rk29_sdmmc_write(host->regs, SDMMC_CTRL,SDMMC_CTRL_INT_ENABLE); // enable mci interrupt
-
- return SDM_SUCCESS;
-}
-
-
-
-
-//enable/disnable the clk.
-static int rk29_sdmmc_control_clock(struct rk29_sdmmc *host, bool enable)
-{
- u32 value = 0;
- int tmo = 0;
- int ret = SDM_SUCCESS;
-
- //wait previous start to clear
- tmo = 1000;
- while (--tmo && (rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START))
- {
- cpu_relax();
- }
- if(!tmo)
- {
- host->errorstep = 0x0C;
- ret = SDM_START_CMD_FAIL;
- goto Error_exit;
- }
-
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- //SDMMC use low-power mode
- if (enable)
- {
- value = (SDMMC_CLKEN_LOW_PWR | SDMMC_CLKEN_ENABLE);
- }
- else
- {
- value = (SDMMC_CLKEN_LOW_PWR | SDMMC_CLKEN_DISABLE);
- }
- }
- else
- {
- //SDIO-card use non-low-power mode
- if (enable)
- {
- value = (SDMMC_CLKEN_ENABLE);
- }
- else
- {
- value = (SDMMC_CLKEN_DISABLE);
- }
- }
-
- rk29_sdmmc_write(host->regs, SDMMC_CLKENA, value);
-
- /* inform CIU */
- ret = sdmmc_send_cmd_start(host, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT);
- if(ret != SDM_SUCCESS)
- {
- goto Error_exit;
- }
-
- return SDM_SUCCESS;
-
-Error_exit:
- printk("\n%s....%d.. control clock fail!!! Enable=%d, ret=%d ===xbw[%s]====\n",\
- __FILE__,__LINE__,enable,ret, host->dma_name);
-
- return ret;
-
-}
-
-
-//adjust the frequency.ie, to set the frequency division control
-int rk29_sdmmc_change_clk_div(struct rk29_sdmmc *host, u32 freqHz)
-{
- u32 div;
- u32 tmo;
- int ret = SDM_SUCCESS;
-
- if(0 == freqHz)
- {
- ret = SDM_PARAM_ERROR;
- goto SetFreq_error;
- }
-
- ret = rk29_sdmmc_control_clock(host, FALSE);
- if (ret != SDM_SUCCESS)
- {
- goto SetFreq_error;
- }
-
-
- host->bus_hz = clk_get_rate(host->clk);
- if((host->bus_hz > 52000000) || (host->bus_hz <= 0))
- {
- printk("%s..%s..%d..****Error!!!!!! Bus clock %d hz is beyond the prescribed limits ====xbw[%s]===\n",\
- __FILE__, __FUNCTION__,__LINE__,host->bus_hz, host->dma_name);
-
- host->errorstep = 0x0D;
- ret = SDM_PARAM_ERROR;
- goto SetFreq_error;
- }
-
- //calculate the divider
- div = host->bus_hz/freqHz + ((( host->bus_hz%freqHz ) > 0) ? 1:0 );
- if( (div & 0x01) && (1 != div) )
- {
- //It is sure that the value of div is even.
- ++div;
- }
-
- if(div > 1)
- {
- host->clock = host->bus_hz/div;
- }
- else
- {
- host->clock = host->bus_hz;
- }
- div = (div >> 1);
-
- //wait previous start to clear
- tmo = 1000;
- while (--tmo && (rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START))
- {
- cpu_relax();
- }
- if(!tmo)
- {
- host->errorstep = 0x0E;
- ret = SDM_START_CMD_FAIL;
- goto SetFreq_error;
- }
-
- /* set clock to desired speed */
- rk29_sdmmc_write(host->regs, SDMMC_CLKDIV, div);
-
- /* inform CIU */
- ret = sdmmc_send_cmd_start(host, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT);
- if(ret != SDM_SUCCESS)
- {
- host->errorstep = 0x0E1;
- goto SetFreq_error;
- }
-
- if(host->old_div != div)
- {
- printk("%s..%d.. newDiv=%u, newCLK=%uKhz====xbw[%s]=====\n", \
- __FUNCTION__, __LINE__,div, host->clock/1000, host->dma_name);
- }
-
- ret = rk29_sdmmc_control_clock(host, TRUE);
- if(ret != SDM_SUCCESS)
- {
- goto SetFreq_error;
- }
- host->old_div = div;
-
- return SDM_SUCCESS;
-
-SetFreq_error:
-
- printk("%s..%s..%d.. change division fail, ret=%d !!! ====xbw[%s]====\n",\
- __FILE__, __FUNCTION__,__LINE__,ret, host->dma_name);
-
- return ret;
-
-}
-
-
-
-static int rk29_sdmmc_hw_init(struct rk29_sdmmc *host)
-{
- /* reset controller */
- rk29_sdmmc_reset_controller(host);
- rk29_sdmmc_change_clk_div(host, FOD_FREQ);
-
- return SDM_SUCCESS;
-}
-
-
-
-int rk29_sdmmc_set_iomux(struct rk29_sdmmc *host)
-{
- #if 0
- switch (host->busWidth)
- {
- case
- rk29_mux_api_set(GPIO1D1_SDMMC0CMD_NAME, GPIO1H_SDMMC0_CMD);
- rk29_mux_api_set(GPIO1D0_SDMMC0CLKOUT_NAME, GPIO1H_SDMMC0_CLKOUT);
- rk29_mux_api_set(GPIO1D2_SDMMC0DATA0_NAME, GPIO1H_SDMMC0_DATA0);
- rk29_mux_api_set(GPIO1D3_SDMMC0DATA1_NAME, GPIO1H_SDMMC0_DATA1);
- rk29_mux_api_set(GPIO1D4_SDMMC0DATA2_NAME, GPIO1H_SDMMC0_DATA2);
+ ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_STOP);
+ if(ret < 0)
+ dev_err(host->dev, "rk29_dma_ctrl stop error\n");
+ ret = rk29_dma_ctrl(host->dma_info.chn,RK29_DMAOP_FLUSH);
+ if(ret < 0)
+ dev_err(host->dev, "rk29_dma_ctrl flush error\n");
+ ret = rk29_dma_devconfig(host->dma_info.chn, direction, (unsigned long )(host->dma_addr));
+ if(ret < 0)
+ dev_err(host->dev, "rk29_dma_devconfig error\n");
+ dma_len = dma_map_sg(host->dev, data->sg, data->sg_len,
+ (data->flags & MMC_DATA_READ)? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ for (i = 0; i < dma_len; i++) {
+ ret = rk29_dma_enqueue(host->dma_info.chn, host, sg_dma_address(&data->sg[i]),sg_dma_len(&data->sg[i])); // data->sg->dma_address, data->sg->length);
+ if(ret < 0)
+ dev_err(host->dev, "rk29 dma enqueue error\n");
}
- #endif
-
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL, (rk29_sdmmc_read(host->regs, SDMMC_CTRL))|SDMMC_CTRL_DMA_ENABLE);// enable dma
+ ret = rk29_dma_ctrl(host->dma_info.chn, RK29_DMAOP_START);
+ if(ret < 0)
+ dev_err(host->dev, "rk29_dma_ctrl start error\n");
+ rk29_sdmmc_set_mrq_status(host, MRQ_START_DMA);
return 0;
}
-
-int rk29_sdmmc_set_buswidth(struct rk29_sdmmc *host)
+static int rk29_sdmmc_test_cmd_start(struct rk29_sdmmc *host)
{
- //int ret;
- switch (host->ctype)
- {
- case SDMMC_CTYPE_1BIT:
- case SDMMC_CTYPE_4BIT:
- break;
- case SDMMC_CTYPE_8BIT:
- return SDM_PARAM_ERROR; //Now, not support 8 bit width
- default:
- return SDM_PARAM_ERROR;
- }
- rk29_sdmmc_set_iomux(host);
-
- /* Set the current bus width */
- rk29_sdmmc_write(host->regs, SDMMC_CTYPE, host->ctype);
-
- return SDM_SUCCESS;
+ return rk29_sdmmc_read(host->regs, SDMMC_CMD) & SDMMC_CMD_START;
}
-
-
-void rk29_sdmmc_set_frq(struct rk29_sdmmc *host)
+static int rk29_sdmmc_start_request(struct rk29_sdmmc *host,struct mmc_request *mrq)
{
- struct mmc_host *mmchost = platform_get_drvdata(host->pdev);
- struct mmc_card *card;
- struct mmc_ios *ios;
- unsigned int max_dtr;
-
- extern void mmc_set_clock(struct mmc_host *host, unsigned int hz);
-
- if(!mmchost)
- return;
-
- card = (struct mmc_card *)mmchost->card;
- ios = ( struct mmc_ios *)&mmchost->ios;
-
- if(!card && !ios)
- return;
-
- if(MMC_POWER_ON == ios->power_mode)
- return;
-
- max_dtr = (unsigned int)-1;
-
- if (mmc_card_highspeed(card))
- {
- if (max_dtr > card->ext_csd.hs_max_dtr)
- max_dtr = card->ext_csd.hs_max_dtr;
-
- }
- else if (max_dtr > card->csd.max_dtr)
- {
- if(MMC_TYPE_SD == card->type)
- {
- max_dtr = (card->csd.max_dtr > SD_FPP_FREQ) ? SD_FPP_FREQ : (card->csd.max_dtr);
- }
- else
- {
- max_dtr = (card->csd.max_dtr > MMC_FPP_FREQ) ? MMC_FPP_FREQ : (card->csd.max_dtr);
- }
- }
-
- xbwprintk(7, "%s..%d... call mmc_set_clock() set clk=%d ===xbw[%s]===\n", \
- __FUNCTION__, __LINE__, max_dtr, host->dma_name);
-
-
- mmc_set_clock(mmchost, max_dtr);
-
-}
-
-static void rk29_sdmmc_dealwith_timeout(struct rk29_sdmmc *host)
-{
- switch(host->state)
- {
- case STATE_IDLE:
- {
- #if 1
- break;
- #else
- if(!host->cmd)
- break;
-
- host->cmd->error = -EIO;
-
- if(host->cmd->data)
- {
- host->cmd->data->error = -EILSEQ;
- }
- host->state = STATE_SENDING_CMD;
- /* fall through */
- #endif
- }
-
- case STATE_SENDING_CMD:
- host->cmd_status |= SDMMC_INT_RTO;
- host->cmd->error = -ETIME;
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,(SDMMC_INT_CMD_DONE | SDMMC_INT_RTO)); // clear interrupt
- rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
- tasklet_schedule(&host->tasklet);
- break;
- case STATE_DATA_BUSY:
- host->data_status |= (SDMMC_INT_DCRC|SDMMC_INT_EBE);
- host->cmd->data->error = -EILSEQ;
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_DTO); // clear interrupt
- rk29_sdmmc_set_pending(host, EVENT_DATA_COMPLETE);
- tasklet_schedule(&host->tasklet);
- break;
- case STATE_SENDING_STOP:
- host->cmd_status |= SDMMC_INT_RTO;
- host->cmd->error = -ETIME;
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,(SDMMC_INT_CMD_DONE | SDMMC_INT_RTO)); // clear interrupt
- rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
- tasklet_schedule(&host->tasklet);
- break;
- }
-}
-
-
-static void rk29_sdmmc_INT_CMD_DONE_timeout(unsigned long host_data)
-{
- struct rk29_sdmmc *host = (struct rk29_sdmmc *) host_data;
+ int ret = 0;
+ struct mmc_command *cmd;
+ u32 cmdflags;
- if(STATE_SENDING_CMD == host->state)
- {
- if(0==host->cmd->retries)
- {
- printk("%s..%d... cmd=%d, INT_CMD_DONE timeout, errorStep=0x%x, host->state=%x ===xbw[%s]===\n",\
- __FUNCTION__, __LINE__,host->cmd->opcode, host->errorstep,host->state,host->dma_name);
- }
-
- rk29_sdmmc_dealwith_timeout(host);
- }
+ BUG_ON(host->state != STATE_IDLE);
-}
-
-
-static void rk29_sdmmc_INT_DTO_timeout(unsigned long host_data)
-{
- struct rk29_sdmmc *host = (struct rk29_sdmmc *) host_data;
-
-
- if( (host->cmdr & SDMMC_CMD_DAT_EXP) && (STATE_DATA_BUSY == host->state))
- {
- if(0==host->cmd->retries)
- {
- printk("%s..%d... cmd=%d INT_DTO timeout,cmdr=0x%x, host->errorStep=0x%x, Hoststate=%x===xbw[%s]===\n", \
- __FUNCTION__, __LINE__,host->cmd->opcode,host->cmdr ,host->errorstep,host->state,host->dma_name);
- }
+ spin_lock(&host->lock);
- rk29_sdmmc_dealwith_timeout(host);
+ if(rk29_sdmmc_test_cmd_start(host)){
+ dev_info(host->dev, "cmd_start bit is set ,reset ctroller\n");
+ ret = rk29_sdmmc_reset_ctrl(host);
}
-
-}
-
-
-//to excute a request
-static int rk29_sdmmc_start_request(struct mmc_host *mmc )
-{
- struct rk29_sdmmc *host = mmc_priv(mmc);
- struct mmc_request *mrq;
- struct mmc_command *cmd;
-
- u32 cmdr, ret;
- unsigned long iflags;
-
- spin_lock_irqsave(&host->lock, iflags);
-
- //host->mrq = host->new_mrq;
- mrq = host->new_mrq;//mrq = host->mrq;
- cmd = mrq->cmd;
- cmd->error = 0;
+ if(ret < 0)
+ goto start_err;
- cmdr = rk29_sdmmc_prepare_command(cmd);
- ret = SDM_SUCCESS;
+ host->state = STATE_SENDING_CMD;
-
- /*clean FIFO if it is a new request*/
- if((RK29_CTRL_SDMMC_ID == host->pdev->id) && ( !(cmdr & SDMMC_CMD_STOP)))
- {
- ret = rk29_sdmmc_reset_fifo(host);
- if(SDM_SUCCESS != ret)
- {
- host->mrq = host->new_mrq;///
- cmd->error = -ENOMEDIUM;
- host->errorstep = 0x0F;
- ret = SDM_FALSE;
- goto start_request_Err;
- }
- }
-
- //check data-busy if the current command has the bit13 in command register.
- if( cmdr & SDMMC_CMD_PRV_DAT_WAIT )
- {
- if(rk29_sdmmc_read(host->regs, SDMMC_STATUS) & SDMMC_STAUTS_DATA_BUSY)
- {
- host->mrq = host->new_mrq;///
- cmd->error = -ETIMEDOUT;
- ret = SDM_BUSY_TIMEOUT;
- host->errorstep = 0x10;
- goto start_request_Err;
- }
- }
-
- host->state = STATE_SENDING_CMD;
- host->mrq = host->new_mrq;
- mrq = host->mrq;
+ if (mrq->data) {
+ rk29_sdmmc_set_timeout(host,mrq->data);
+ rk29_sdmmc_write(host->regs, SDMMC_BYTCNT,mrq->data->blksz*mrq->data->blocks);
+ rk29_sdmmc_write(host->regs, SDMMC_BLKSIZ,mrq->data->blksz);
+ }
cmd = mrq->cmd;
- cmd->error = 0;
-
- host->cmdr = cmdr;
- host->cmd = cmd;
- host->pending_events = 0;
- host->completed_events = 0;
- host->data_status = 0;
- host->data = NULL;
-
- host->errorstep = 0;
- host->dodma = 0;
-
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- //adjust the frequency division control of SDMMC0 every time.
- rk29_sdmmc_set_frq(host);
- }
-
-
- //setting for the data
- rk29_sdmmc_submit_data(host, mrq->data);
-
-
- xbwprintk(7, "%s..%d... CMD%d begin to call rk29_sdmmc_start_command() ===xbw[%s]===\n", \
- __FUNCTION__, __LINE__ , cmd->opcode,host->dma_name);
+ cmdflags = rk29_sdmmc_prepare_command(host->mmc, cmd);
+ if (host->is_init) {
+ host->is_init = 0;
+ cmdflags |= SDMMC_CMD_INIT;
+ }
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- mod_timer(&host->request_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_SEND_START_TIMEOUT+700));
+ if (mrq->data) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_HAS_DATA);
+ ret = rk29_sdmmc_submit_data(host, mrq->data);
}
- else
- {
- mod_timer(&host->request_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_SEND_START_TIMEOUT+500));
+ if(ret < 0) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_DMA_SET_ERR);
+ goto start_err;
}
-
-
- ret = rk29_sdmmc_start_command(host, cmd, host->cmdr);
- if(SDM_SUCCESS != ret)
- {
- cmd->error = -ETIMEDOUT;
- printk("%s..%d... start_command(CMD%d, arg=%x) fail !!!!!!! ret=%d =========xbw=[%s]===\n",\
- __FUNCTION__, __LINE__ , cmd->opcode,cmd->arg,ret, host->dma_name);
- host->errorstep = 0x11;
- del_timer_sync(&host->request_timer);
-
- goto start_request_Err;
+ dev_dbg(host->dev,"start cmd:%d ARGR=0x%08x CMDR=0x%08x\n",
+ cmd->opcode, cmd->arg, cmdflags);
+
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, ~SDMMC_INT_SDIO);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK,
+ rk29_sdmmc_read(host->regs, SDMMC_INTMASK) |
+ (SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS));
+ ret = rk29_sdmmc_start_command(host, cmd, cmdflags);
+ if(ret < 0) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_CMD_START_TMO);
+ goto start_err;
}
-
- xbwprintk(7, "%s..%d... CMD=%d, wait for INT_CMD_DONE, ret=%d , \n \
- host->state=0x%x, cmdINT=0x%x \n host->pendingEvent=0x%lu, host->completeEvents=0x%lu =========xbw=[%s]=====\n\n",\
- __FUNCTION__, __LINE__, host->cmd->opcode,ret, \
- host->state,host->cmd_status, host->pending_events,host->completed_events,host->dma_name);
-
- spin_unlock_irqrestore(&host->lock, iflags);
- return SDM_SUCCESS;
-
-start_request_Err:
- rk29_sdmmc_start_error(host);
-
- printk("%s: CMD%d fail to call sdmmc_start_command() err=%d, Errorstep=0x%x ====xbw[%s]===\n\n",\
- __FUNCTION__, cmd->opcode,ret,host->errorstep,host->dma_name);
-
- spin_unlock_irqrestore(&host->lock, iflags);
-
- host->state = STATE_IDLE;
- mmc_request_done(host->mmc, host->mrq);
-
- return ret;
-
+ rk29_sdmmc_set_mrq_status(host, MRQ_CMD_START_DONE);
+ if (mrq->stop) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_HAS_STOP);
+ host->stop_cmdr = rk29_sdmmc_prepare_command(host->mmc, mrq->stop);
+ if(mrq->cmd->opcode == 25)
+ host->stop_cmdr |= SDMMC_CMD_DAT_WR;
+ }
+ spin_unlock(&host->lock);
+ return 0;
+start_err:
+ spin_unlock(&host->lock);
+ return ret;
}
-
static void rk29_sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
+ int timeout;
struct rk29_sdmmc *host = mmc_priv(mmc);
-
- #if 0
- //set 1 to close the controller for Debug.
- if(RK29_CTRL_SDMMC_ID==host->pdev->id)//if(RK29_CTRL_SDIO_ID==host->pdev->id)
- {
- mrq->cmd->error = -ENOMEDIUM;
- printk("%s..%d.. ==== The %s had been closed by myself for the experiment. ====xbw[%s]===\n",\
- __FUNCTION__, __LINE__, host->dma_name, host->dma_name);
- mmc_request_done(mmc, mrq);
- return;
- }
- #endif
-
- xbwprintk(5, "\n\n%s..%d...Begin a new cmd=%2d. ====@@@@@@@@==== host->flags=0x%lu, state=0x%x ===xbw[%s]====\n", \
- __FUNCTION__, __LINE__,mrq->cmd->opcode, host->flags,host->state, host->dma_name);
-
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- if(!rk29_sdmmc_get_cd(mmc) || ((0==mmc->re_initialized_flags)&&(MMC_GO_IDLE_STATE != mrq->cmd->opcode)))
- {
- mrq->cmd->error = -ENOMEDIUM;
-
- if((RK29_CTRL_SDMMC_ID == host->pdev->id)&&(0==mrq->cmd->retries))
- {
- if(host->old_cmd != mrq->cmd->opcode)
- {
- if( ((17==host->old_cmd)&&(18==mrq->cmd->opcode)) || ((18==host->old_cmd)&&(17==mrq->cmd->opcode)) ||\
- ((24==host->old_cmd)&&(25==mrq->cmd->opcode)) || ((25==host->old_cmd)&&(24==mrq->cmd->opcode)))
- {
- host->old_cmd = mrq->cmd->opcode;
- if(host->error_times++ %RK29_ERROR_PRINTK_INTERVAL ==0)
- {
- printk("%s: Refuse to run CMD%2d(arg=0x%8x) due to the removal of card. 1==xbw[%s]==\n", \
- __FUNCTION__, mrq->cmd->opcode, mrq->cmd->arg, host->dma_name);
- }
- }
- else
- {
- host->old_cmd = mrq->cmd->opcode;
- host->error_times = 0;
- printk("%s: Refuse to run CMD%2d(arg=0x%8x) due to the removal of card. 2==xbw[%s]==\n", \
- __FUNCTION__, mrq->cmd->opcode, mrq->cmd->arg, host->dma_name);
- }
- }
- else
- {
- if(host->error_times++ %RK29_ERROR_PRINTK_INTERVAL ==0)
- {
- printk("%s: Refuse to run CMD%2d(arg=0x%8x) due to the removal of card. 3==xbw[%s]==\n", \
- __FUNCTION__, mrq->cmd->opcode, mrq->cmd->arg, host->dma_name);
- }
- }
- }
-
- mmc_request_done(mmc, mrq);
- return;
- }
- else
- {
- if(host->old_cmd != mrq->cmd->opcode)
- {
- host->old_cmd = mrq->cmd->opcode;
- host->error_times = 0;
+ if(!mrq)
+ dev_info(host->dev, "mrq = NULL!!!!!\n");
+ if(host->mrq){
+ dev_info(host->dev, "%s-> host->mrq = NULL\n", __func__);
+ rk29_sdmmc_show_info(host);
}
- }
- }
+ if((!rk29_sdmmc_test_mrq_status(host, MRQ_STOP_DMA) &&
+ rk29_sdmmc_test_mrq_status(host, MRQ_START_DMA)) ||
+ (rk29_sdmmc_test_mrq_status(host, MRQ_STOP_DMA) &&
+ !rk29_sdmmc_test_mrq_status(host, MRQ_START_DMA)))
+ dev_warn(host->dev, "start_dma but no stop_dma, or no start_dma but stop_dma\n");
+ WARN_ON(host->mrq);
+ host->old_mrq_status = host->mrq_status;
+ host->mrq_status = 0;
+ host->pending_events = 0;
+ host->completed_events= 0;
+ host->cmd_intsts = 0;
+ host->data_intsts = 0;
+ host->mrq = mrq;
+
+ if(!mrq->data)
+ timeout = 5000;
else
- {
- host->old_cmd = mrq->cmd->opcode;
- host->error_times = 0;
- }
+ timeout = 5000 + mrq->data->timeout_ns/1000000;
+ mod_timer(&host->monitor_timer, jiffies + msecs_to_jiffies(timeout));
- //host->mrq = mrq; //replaced by xbw
- host->new_mrq = mrq;
- if (host->state == STATE_IDLE)
- {
- //host->state = STATE_SENDING_CMD; //replaced by xbw
- rk29_sdmmc_start_request(mmc);
- }
- else
- {
- #ifdef RK29_SDMMC_LIST_QUEUE
-
- printk("%s..%d...Danger! Danger! New request was added to queue. ===xbw[%s]===\n", \
- __FUNCTION__, __LINE__,host->dma_name);
- list_add_tail(&host->queue_node, &host->queue);
-
- #else
-
- printk("%s..%d...host state Error! old_state=%d, NewCMD%2d,arg=0x%x ====xbw[%s]======\n", \
- __FUNCTION__, __LINE__, host->state, mrq->cmd->opcode,mrq->cmd->arg, host->dma_name);
-
+ if (!rk29_sdmmc_get_cd(mmc)) {
mrq->cmd->error = -ENOMEDIUM;
- mmc_request_done(mmc, mrq);
+ rk29_sdmmc_request_done(host, mrq);
+ dev_dbg(host->dev, "mrq_status = 0x%08lx\n", host->mrq_status);
return;
-
- #endif
- }
-}
-
-
-
-static void rk29_sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
- int timeout = 100;
- unsigned int value;
- unsigned long iflags;
- struct rk29_sdmmc *host = mmc_priv(mmc);
-
- spin_lock_irqsave(&host->lock, iflags);
-
- /*
- * Waiting SDIO controller to be IDLE.
- */
- while (timeout-- > 0)
- {
- value = rk29_sdmmc_read(host->regs, SDMMC_STATUS);
- if ((value & SDMMC_STAUTS_DATA_BUSY) == 0 &&(value & SDMMC_CMD_FSM_MASK) == SDMMC_CMD_FSM_IDLE)
- {
- break;
- }
-
- mdelay(1);
- }
- if (timeout <= 0)
- {
- printk("%s..%d...Waiting for SDIO controller to be IDLE timeout.==xbw[%s]===\n", \
- __FUNCTION__, __LINE__, host->dma_name);
-
- goto out;
- }
-
- //if(host->bus_mode != ios->power_mode)
- {
- switch (ios->power_mode)
- {
- case MMC_POWER_UP:
- rk29_sdmmc_write(host->regs, SDMMC_PWREN, POWER_ENABLE);
-
- //reset the controller if it is SDMMC0
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- xbwprintk(7, "%s..%d..POWER_UP, call reset_controller, initialized_flags=%d ====xbw[%s]=====\n",\
- __FUNCTION__, __LINE__, host->mmc->re_initialized_flags,host->dma_name);
-
- mdelay(5);
-
- rk29_sdmmc_hw_init(host);
- }
-
- break;
- case MMC_POWER_OFF:
-
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- rk29_sdmmc_control_clock(host, FALSE);
- rk29_sdmmc_write(host->regs, SDMMC_PWREN, POWER_DISABLE);
-
- if(5 == host->bus_mode)
- {
- mdelay(5);
- xbwprintk(7, "%s..%d..Fisrt powerOFF, call reset_controller ======xbw[%s]====\n", \
- __FUNCTION__, __LINE__,host->dma_name);
-
- rk29_sdmmc_reset_controller(host);
- }
-
- }
-
- break;
- default:
- break;
- }
-
- host->bus_mode = ios->power_mode;
-
}
-
- if(host->ctype != ios->bus_width)
- {
- switch (ios->bus_width)
- {
- case MMC_BUS_WIDTH_1:
- host->ctype = SDMMC_CTYPE_1BIT;
- break;
- case MMC_BUS_WIDTH_4:
- host->ctype = SDMMC_CTYPE_4BIT;
- break;
- case MMC_BUS_WIDTH_8:
- host->ctype = SDMMC_CTYPE_8BIT;
- break;
- default:
- host->ctype = 0;
- break;
- }
-
- rk29_sdmmc_set_buswidth(host);
-
+ if(rk29_sdmmc_set_clock(host)) {
+ mrq->cmd->error = -EINPROGRESS;
+ dev_info(host->dev, "rk29_sdmmc_set_clock timeout, ios_clock = %d, clock = %d\n", host->ios_clock, host->clock);
+ rk29_sdmmc_request_done(host, mrq);
+ rk29_sdmmc_reset_ctrl(host);
+ rk29_sdmmc_show_info(host);
+ return;
}
-
- if (ios->clock && (ios->clock != host->clock))
- {
- /*
- * Use mirror of ios->clock to prevent race with mmc
- * core ios update when finding the minimum.
- */
- //host->clock = ios->clock;
- rk29_sdmmc_change_clk_div(host, ios->clock);
+
+ if(rk29_sdmmc_start_request(host,mrq)) {
+ dev_info(host->dev, "rk29_sdmmc_start_request timeout\n");
+ mrq->cmd->error = -EINPROGRESS;
+ rk29_sdmmc_request_done(host, mrq);
+ rk29_sdmmc_reset_ctrl(host);
+ rk29_sdmmc_show_info(host);
}
-out:
-
- spin_unlock_irqrestore(&host->lock, iflags);
-}
-
-static int rk29_sdmmc_get_ro(struct mmc_host *mmc)
-{
- struct rk29_sdmmc *host = mmc_priv(mmc);
- u32 wrtprt = rk29_sdmmc_read(host->regs, SDMMC_WRTPRT);
-
- return (wrtprt & SDMMC_WRITE_PROTECT)?1:0;
+ return;
}
-
static void rk29_sdmmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
u32 intmask;
spin_lock_irqsave(&host->lock, flags);
intmask = rk29_sdmmc_read(host->regs, SDMMC_INTMASK);
-
if(enable)
rk29_sdmmc_write(host->regs, SDMMC_INTMASK, intmask | SDMMC_INT_SDIO);
else
card->quirks = MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
}
-
-
static const struct mmc_host_ops rk29_sdmmc_ops[] = {
{
.request = rk29_sdmmc_request,
{
.request = rk29_sdmmc_request,
.set_ios = rk29_sdmmc_set_ios,
- .enable_sdio_irq = rk29_sdmmc_enable_sdio_irq,
- .init_card = rk29_sdmmc_init_card,
- },
-};
-
-static void rk29_sdmmc_request_end(struct rk29_sdmmc *host, struct mmc_command *cmd)
-{
- u32 status;
- int output=SDM_SUCCESS;
-
- xbwprintk(7, "%s..%d... cmd=%d, host->state=0x%x,\n pendingEvent=0x%lu, completeEvents=0x%lu ====xbw=[%s]====\n\n",\
- __FUNCTION__, __LINE__,cmd->opcode,host->state, host->pending_events,host->completed_events,host->dma_name);
-
- del_timer_sync(&host->DTO_timer);
-
- //stop DMA
- if(host->dodma)
- {
- rk29_sdmmc_stop_dma(host);
- rk29_sdmmc_control_host_dma(host, FALSE);
- host->dodma = 0;
- }
-
- if(cmd->error)
- {
- goto exit;//It need not to wait-for-busy if the CMD-ERROR happen.
- }
-
- if(cmd->data)
- {
-
- status = host->data_status;
-
- if(host->cmdr & SDMMC_CMD_DAT_WRITE)
- {
- if(status & (SDMMC_INT_DCRC | SDMMC_INT_EBE))
- {
- cmd->data->error = -EILSEQ;;//mrq->data->error = -EILSEQ;
- output = SDM_DATA_CRC_ERROR;
- host->errorstep = 0x16;
- }
- else
- {
- output = rk29_sdmmc_wait_unbusy(host);
- if(SDM_SUCCESS != output)
- {
- host->errorstep = 0x17;
- cmd->data->error = -ETIMEDOUT;
- }
-
- host->data->bytes_xfered = host->data->blocks * host->data->blksz;
- }
- }
- else
- {
- if( status & SDMMC_INT_SBE)
- {
- cmd->data->error = -EIO;
- host->errorstep = 0x18;
- output = SDM_START_BIT_ERROR;
- }
- else if((status & SDMMC_INT_EBE) && (cmd->opcode != 14)) //MMC4.0, BUSTEST_R, A host read the reserved bus testing data parttern from a card.
- {
- cmd->data->error = -EILSEQ;
- host->errorstep = 0x19;
- output = SDM_END_BIT_ERROR;
- }
- else if(status & SDMMC_INT_DRTO)
- {
- cmd->data->error = -ETIMEDOUT;
- host->errorstep = 0x1A;
- output = SDM_DATA_READ_TIMEOUT;
- }
- else if(status & SDMMC_INT_DCRC)
- {
- host->errorstep = 0x1B;
- cmd->data->error = -EILSEQ;
- output = SDM_DATA_CRC_ERROR;
- }
- else
- {
- output = rk29_sdmmc_read_remain_data(host, (host->data->blocks * host->data->blksz), host->pbuf);
- if(SDM_SUCCESS == output)
- {
- host->data->bytes_xfered = host->data->blocks * host->data->blksz;
- }
- }
- }
- }
-
- if(SDM_SUCCESS == output)
- {
- if ((mmc_resp_type(cmd) == MMC_RSP_R1B) || (MMC_STOP_TRANSMISSION == cmd->opcode))
- {
- output = rk29_sdmmc_wait_unbusy(host);
- if(SDM_SUCCESS != output)
- {
- cmd->error = -ETIMEDOUT;
- host->mrq->cmd->error = -ETIMEDOUT;
- host->errorstep = 0x1C;
- printk("%s..%d... CMD12 wait busy timeout!!!!! ====xbw=[%s]====\n", \
- __FUNCTION__, __LINE__, host->dma_name);
- }
- }
- }
-
- //trace error
- if(cmd->data && cmd->data->error)
- {
- if( (!cmd->error) && (0==cmd->retries) && (host->error_times++%RK29_ERROR_PRINTK_INTERVAL == 0))
- {
- printk("%s..%d......CMD=%d error!!!, arg=%x, errorTimes=%d, errorStep=0x%x ! ====xbw[%s]====\n",\
- __FUNCTION__, __LINE__, cmd->opcode, cmd->arg, host->error_times,host->errorstep, host->dma_name);
- }
- }
-
-exit:
-
-#ifdef RK29_SDMMC_LIST_QUEUE
- if (!list_empty(&host->queue))
- {
- printk("%s..%d.. Danger!Danger!. continue the next request in the queue. ====xbw[%s]====\n",\
- __FUNCTION__, __LINE__, host->dma_name);
-
- host = list_entry(host->queue.next,
- struct rk29_sdmmc, queue_node);
- list_del(&host->queue_node);
- host->state = STATE_SENDING_CMD;
- rk29_sdmmc_start_request(host->mmc);
- }
- else
- {
- dev_vdbg(&host->pdev->dev, "list empty\n");
- host->state = STATE_IDLE;
- }
-#else
- dev_vdbg(&host->pdev->dev, "list empty\n");
- host->state = STATE_IDLE;
-#endif
-
-}
-
-static int rk29_sdmmc_command_complete(struct rk29_sdmmc *host,
- struct mmc_command *cmd)
-{
- u32 value, status = host->cmd_status;
- int timeout, output= SDM_SUCCESS;
-
- xbwprintk(7, "%s..%d. cmd=%d, host->state=0x%x, cmdINT=0x%x\n,pendingEvent=0x%lu,completeEvents=0x%lu ===xbw[%s]===\n\n",\
- __FUNCTION__, __LINE__,cmd->opcode,host->state,status, host->pending_events,host->completed_events,host->dma_name);
-
-
- del_timer_sync(&host->request_timer);
-
- host->cmd_status = 0;
-
- if((RK29_CTRL_SDMMC_ID == host->pdev->id) && (host->cmdr & SDMMC_CMD_STOP))
- {
- output = rk29_sdmmc_reset_fifo(host);
- if (SDM_SUCCESS != output)
- {
- printk("%s..%d......reset fifo fail!!! =======xbw[%s]=====\n",__FUNCTION__, __LINE__, host->dma_name);
- cmd->error = -ETIMEDOUT;
- host->mrq->cmd->error = cmd->error;
- output = SDM_ERROR;
- host->errorstep = 0x1C;
- goto CMD_Errror;
- }
- }
-
- //status = rk29_sdmmc_read(host->regs, SDMMC_RINTSTS);
- if(status & SDMMC_INT_RTO)
- {
- cmd->error = -ENOMEM;
- host->mrq->cmd->error = cmd->error;
- output = SDM_BUSY_TIMEOUT;
-
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_RTO);
-
- if(host->use_dma)//if(host->dodma)
- {
- if(host->dodma)
- {
- rk29_sdmmc_stop_dma(host);
- rk29_sdmmc_control_host_dma(host, FALSE);
- host->dodma = 0;
- }
-
- value = rk29_sdmmc_read(host->regs, SDMMC_CTRL);
- value |= SDMMC_CTRL_FIFO_RESET;
- rk29_sdmmc_write(host->regs, SDMMC_CTRL, value);
-
- timeout = 1000;
- while (((value = rk29_sdmmc_read(host->regs, SDMMC_CTRL)) & (SDMMC_CTRL_FIFO_RESET)) && (timeout > 0))
- {
- udelay(1);
- timeout--;
- }
- if (timeout == 0)
- {
- output = SDM_FALSE;
- host->errorstep = 0x1D;
- printk("%s..%d......reset CTRL fail!!! =======xbw[%s]=====\n",__FUNCTION__, __LINE__, host->dma_name);
-
- goto CMD_Errror;
- }
- }
-
- }
-
- if(cmd->flags & MMC_RSP_PRESENT)
- {
- if(cmd->flags & MMC_RSP_136)
- {
- cmd->resp[3] = rk29_sdmmc_read(host->regs, SDMMC_RESP0);
- cmd->resp[2] = rk29_sdmmc_read(host->regs, SDMMC_RESP1);
- cmd->resp[1] = rk29_sdmmc_read(host->regs, SDMMC_RESP2);
- cmd->resp[0] = rk29_sdmmc_read(host->regs, SDMMC_RESP3);
- }
- else
- {
- cmd->resp[0] = rk29_sdmmc_read(host->regs, SDMMC_RESP0);
- }
- }
-
- if(cmd->error)
- {
- del_timer_sync(&host->DTO_timer);
-
- //trace error
- if((0==cmd->retries) && (host->error_times++%RK29_ERROR_PRINTK_INTERVAL == 0))
- {
- if( ((RK29_CTRL_SDMMC_ID==host->pdev->id)&&(MMC_SLEEP_AWAKE!=cmd->opcode)) ||
- ((RK29_CTRL_SDMMC_ID!=host->pdev->id)&&(MMC_SEND_EXT_CSD!=cmd->opcode)) )
- {
- printk("%s..%d...CMD=%d, arg=%x, errorTimes=%d, errorStep=0x%x !!!!!! =======xbw[%s]=====\n",\
- __FUNCTION__, __LINE__, cmd->opcode, cmd->arg,host->error_times,host->errorstep, host->dma_name);
- }
- }
-
- }
- del_timer_sync(&host->request_timer);
-
-
- return SDM_SUCCESS;
-
-CMD_Errror:
- del_timer_sync(&host->request_timer);
- del_timer_sync(&host->DTO_timer);
-
- if((0==cmd->retries) && (host->error_times++%RK29_ERROR_PRINTK_INTERVAL == 0))
- {
- printk("%s..%d......command_complete(CMD=%d, arg=%x) error=%d =======xbw[%s]=====\n",\
- __FUNCTION__, __LINE__, host->cmd->opcode,host->cmd->arg, output, host->dma_name);
- }
-
- return output;
-
-}
-
-
-static void rk29_sdmmc_start_error(struct rk29_sdmmc *host)
-{
- host->cmd->error = -EIO;
- host->mrq->cmd->error = -EIO;
- host->cmd_status = SDMMC_INT_RTO;
-
- del_timer_sync(&host->request_timer);
-
- rk29_sdmmc_command_complete(host, host->mrq->cmd);
- rk29_sdmmc_request_end(host, host->mrq->cmd);
-
-}
-
-static void rk29_sdmmc_tasklet_func(unsigned long priv)
-{
- struct rk29_sdmmc *host = (struct rk29_sdmmc *)priv;
- struct mmc_data *data = host->cmd->data;
- enum rk29_sdmmc_state state = host->state;
- int done_flag=0;
-
- spin_lock(&host->lock);
-
- state = host->state;
- done_flag = 0;
-
- do
- {
- switch (state)
- {
- case STATE_IDLE:
- {
- xbwprintk(7, "%s..%d.. prev_state= STATE_IDLE ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->dma_name);
- break;
- }
-
- case STATE_SENDING_CMD:
- {
- xbwprintk(7, "%s..%d.. prev_state= STATE_SENDING_CMD, pendingEvernt=0x%lu ====xbw[%s]====\n",\
- __FUNCTION__, __LINE__,host->completed_events, host->dma_name);
-
- if (!rk29_sdmmc_test_and_clear_pending(host, EVENT_CMD_COMPLETE))
- break;
-
- del_timer_sync(&host->request_timer); //delete the timer for INT_COME_DONE
-
- rk29_sdmmc_set_completed(host, EVENT_CMD_COMPLETE);
- rk29_sdmmc_command_complete(host, host->cmd);
-
-
- if (!data)
- {
- rk29_sdmmc_request_end(host, host->cmd);
-
- xbwprintk(7, "%s..%d.. CMD%d call mmc_request_done()====xbw[%s]====\n", \
- __FUNCTION__, __LINE__,host->cmd->opcode,host->dma_name);
-
- done_flag = 1;
- goto unlock;
- }
-
- if(host->cmd->error)
- {
- del_timer_sync(&host->DTO_timer); //delete the timer for INT_DTO
-
- if(data->stop)
- {
- xbwprintk(7, "%s..%d.. cmderr, so call send_stop_cmd() ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->dma_name);
-
- state = STATE_SENDING_CMD;//STATE_SENDING_STOP;
- send_stop_cmd(host);
- break;
- }
-
- rk29_sdmmc_set_pending(host, EVENT_DATA_COMPLETE);
- }
-
-
- state = STATE_DATA_BUSY;
- /* fall through */
- }
-
- case STATE_DATA_BUSY:
- {
- xbwprintk(7, "%s..%d.. prev_state= STATE_DATA_BUSY, pendingEvernt=0x%lu ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__,host->pending_events, host->dma_name);
-
- if (!rk29_sdmmc_test_and_clear_pending(host, EVENT_DATA_COMPLETE))
- break;
-
- rk29_sdmmc_set_completed(host, EVENT_DATA_COMPLETE);
- del_timer_sync(&host->DTO_timer); //delete the timer for INT_DTO
-
- rk29_sdmmc_request_end(host, host->cmd);
-
- if (data && !data->stop)
- {
- xbwprintk(7, "%s..%d.. CMD%d call mmc_request_done()====xbw[%s]====\n", \
- __FUNCTION__, __LINE__,host->cmd->opcode,host->dma_name);
-
- if(!( (MMC_READ_SINGLE_BLOCK == host->cmd->opcode)&&( -EIO == data->error))) //deal with START_BIT_ERROR
- {
- done_flag = 1;
- goto unlock;
- }
-
- }
-
- xbwprintk(7, "%s..%d.. after DATA_COMPLETE, so call send_stop_cmd() ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->dma_name);
-
- state = STATE_SENDING_CMD;
- send_stop_cmd(host);
- break;
- }
-
- case STATE_SENDING_STOP:
- {
- xbwprintk(7, "%s..%d.. prev_state= STATE_SENDING_STOP, pendingEvernt=0x%lu ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->pending_events, host->dma_name);
-
- if (!rk29_sdmmc_test_and_clear_pending(host, EVENT_CMD_COMPLETE))
- break;
-
- rk29_sdmmc_command_complete(host, host->cmd);
- del_timer_sync(&host->request_timer); //delete the timer for INT_CMD_DONE int CMD12
- rk29_sdmmc_request_end(host, host->cmd);
-
- done_flag = 1;
- goto unlock;
- }
-
- }
- } while(0);
-
- host->state = state;
-
-unlock:
- if(0==done_flag)
- {
- spin_unlock(&host->lock);
- return;
- }
-
- host->state = STATE_IDLE;
- spin_unlock(&host->lock);
-
- mmc_request_done(host->mmc, host->mrq);
-}
-
+ .enable_sdio_irq = rk29_sdmmc_enable_sdio_irq,
+ .init_card = rk29_sdmmc_init_card,
+ },
+};
-static inline void rk29_sdmmc_cmd_interrupt(struct rk29_sdmmc *host, u32 status)
+static void rk29_sdmmc_request_end(struct rk29_sdmmc *host)
+ __releases(&host->lock)
+ __acquires(&host->lock)
{
- if(!host->cmd_status)
- host->cmd_status = status;
-
- if((MMC_STOP_TRANSMISSION != host->cmd->opcode) && (host->cmdr & SDMMC_CMD_DAT_EXP))
- {
- mod_timer(&host->DTO_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_WAIT_DTO_INTERNVAL));
- }
-
- smp_wmb();
- rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
- tasklet_schedule(&host->tasklet);
+ if(host->mrq)
+ rk29_sdmmc_request_done(host, host->mrq);
}
-static irqreturn_t rk29_sdmmc_interrupt(int irq, void *dev_id)
+static void rk29_sdmmc_command_complete(struct rk29_sdmmc *host,
+ struct mmc_command *cmd)
{
- struct rk29_sdmmc *host = dev_id;
- u32 status, pending;
- bool present;
- bool present_old;
- unsigned long iflags;
-
- spin_lock_irqsave(&host->lock, iflags);
-
- status = rk29_sdmmc_read(host->regs, SDMMC_RINTSTS);
- pending = rk29_sdmmc_read(host->regs, SDMMC_MINTSTS);// read only mask reg
- if (!pending)
- {
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
- }
+ unsigned int intsts = host->cmd_intsts;
+ host->cmd_intsts = 0;
+ if(cmd->flags & MMC_RSP_PRESENT) {
- if(pending & SDMMC_INT_CD)
- {
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, SDMMC_INT_CD); // clear sd detect int
- present = rk29_sdmmc_get_cd(host->mmc);
- present_old = test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
-
- if(present != present_old)
- {
- printk("\n******************\n%s:INT_CD=0x%x,INT-En=%d,hostState=%d, present Old=%d ==> New=%d ==xbw[%s]==\n",\
- __FUNCTION__, pending, host->mmc->re_initialized_flags, host->state, present_old, present, host->dma_name);
-
- rk28_send_wakeup_key(); //wake up backlight
- host->error_times = 0;
-
- #if 1
- rk29_sdmmc_dealwith_timeout(host);
- #endif
-
- if(present)
- {
- set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
-
- if(host->mmc->re_initialized_flags)
- {
- mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_REMOVAL_DELAY/2));
- }
- else
- {
- mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(RK29_SDMMC_REMOVAL_DELAY*2));
- }
- }
- else
- {
- clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- host->mmc->re_initialized_flags = 0;
-
- mmc_detect_change(host->mmc, 200);
- }
-
- }
-
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
-
- }
+ if(cmd->flags & MMC_RSP_136) {
+ cmd->resp[3] = rk29_sdmmc_read(host->regs, SDMMC_RESP0);
+ cmd->resp[2] = rk29_sdmmc_read(host->regs, SDMMC_RESP1);
+ cmd->resp[1] = rk29_sdmmc_read(host->regs, SDMMC_RESP2);
+ cmd->resp[0] = rk29_sdmmc_read(host->regs, SDMMC_RESP3);
+ } else {
+ cmd->resp[0] = rk29_sdmmc_read(host->regs, SDMMC_RESP0);
+ cmd->resp[1] = 0;
+ cmd->resp[2] = 0;
+ cmd->resp[3] = 0;
+ }
+ }
+ if (intsts & SDMMC_INT_RTO)
+ cmd->error = -ETIMEDOUT;
+ else if ((cmd->flags & MMC_RSP_CRC) && (intsts & SDMMC_INT_RCRC))
+ cmd->error = -EILSEQ;
+ else if (intsts & SDMMC_INT_RE)
+ cmd->error = -EIO;
+ else if(intsts & SDMMC_INT_HLE)
+ cmd->error = -EIO;
+ else
+ cmd->error = 0;
- if (pending & SDMMC_INT_CMD_DONE) {
+ if (cmd->error) {
+ dev_dbg(host->dev,
+ "command error: status=0x%08x resp=0x%08x\n"
+ "cmd=0x%08x arg=0x%08x flg=0x%08x err=%d\n",
+ intsts, cmd->resp[0],
+ cmd->opcode, cmd->arg, cmd->flags, cmd->error);
- xbwprintk(6, "%s..%d.. CMD%d INT_CMD_DONE INT=0x%x ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->cmd->opcode,pending, host->dma_name);
+ if (cmd->data) {
+ rk29_sdmmc_stop_dma(host);
+ }
+ }
+}
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_CMD_DONE); // clear interrupt
+static void rk29_sdmmc_tasklet_func(unsigned long priv)
+{
+ struct rk29_sdmmc *host = (struct rk29_sdmmc *)priv;
+ enum rk29_sdmmc_state state;
+ enum rk29_sdmmc_state prev_state;
+ unsigned int intsts;
- rk29_sdmmc_cmd_interrupt(host, status);
- }
+ spin_lock(&host->lock);
+ state = host->state;
- if(pending & SDMMC_INT_SDIO)
- {
- xbwprintk(7, "%s..%d.. INT_SDIO INT=0x%x ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, pending, host->dma_name);
+ do {
+ prev_state = state;
+ switch (state) {
+ case STATE_IDLE:
+ break;
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_SDIO);
- mmc_signal_sdio_irq(host->mmc);
- }
+ case STATE_SENDING_CMD:
+ if (!rk29_sdmmc_test_and_clear_pending(host,
+ EVENT_CMD_COMPLETE))
+ break;
+ rk29_sdmmc_set_completed(host, EVENT_CMD_COMPLETE);
+ if(!host->mrq){
+ dev_info(host->dev, "sending cmd, host->mrq = NULL\n");
+ rk29_sdmmc_show_info(host);
+ }else{
+ rk29_sdmmc_command_complete(host, host->mrq->cmd);
+ if (!host->mrq->data || (host->mrq->cmd->error)) {
+ rk29_sdmmc_request_end(host);
+ goto unlock;
+ }
+ prev_state = state = STATE_SENDING_DATA;
+ }
+ case STATE_SENDING_DATA:
+ if (rk29_sdmmc_test_and_clear_pending(host,
+ EVENT_DATA_ERROR)) {
+ if(!host->mrq){
+ dev_info(host->dev, "sending data, host->mrq = NULL\n");
+ rk29_sdmmc_show_info(host);
+ }
+ if(!rk29_sdmmc_test_mrq_status(host, MRQ_DMA_DONE) &&
+ rk29_sdmmc_test_mrq_status(host, MRQ_START_DMA))
+ dev_info(host->dev, "dma is running...\n");
+ rk29_sdmmc_stop_dma(host);
+ if (host->mrq->data->stop)
+ send_stop_cmd(host);
+ state = STATE_DATA_ERROR;
+ break;
+ }
+ prev_state = state = STATE_DATA_BUSY;
+
+ case STATE_DATA_BUSY:
+ if (!rk29_sdmmc_test_and_clear_pending(host,EVENT_DATA_COMPLETE) &&
+ !(host->data_intsts & SDMMC_INT_SBE))
+ break;
+
+ rk29_sdmmc_set_completed(host, EVENT_DATA_COMPLETE);
+ intsts = host->data_intsts;
+ if(!host->mrq){
+ dev_info(host->dev, "%s-> host->mrq = NULL\n", __func__);
+ rk29_sdmmc_show_info(host);
+ }
+ if(host->mrq->data) {
+ if (unlikely(intsts & RK29_SDMMC_DATA_ERROR_FLAGS)) {
+ if (intsts & SDMMC_INT_DRTO) {
+ dev_err(host->dev,"data timeout error\n");
+ host->mrq->data->error = -ETIMEDOUT;
+ } else if (intsts & SDMMC_INT_DCRC) {
+ dev_err(host->dev,"data CRC error\n");
+ host->mrq->data->error = -EILSEQ;
+ } else if (intsts & SDMMC_INT_SBE) {
+ dev_err(host->dev,"data start bit error\n");
+ host->mrq->data->error = -EILSEQ;
+ }else {
+ dev_err(host->dev,"data FIFO error (status=%08x)\n",intsts);
+ host->mrq->data->error = -EIO;
+ }
+ rk29_sdmmc_show_info(host);
+ }else {
+ host->mrq->data->bytes_xfered = host->mrq->data->blocks * host->mrq->data->blksz;
+ host->mrq->data->error = 0;
+ }
+ }
+ if (!host->mrq->data->stop) {
+ rk29_sdmmc_request_end(host);
+ goto unlock;
+ }
+ prev_state = state = STATE_SENDING_STOP;
+ if (host->mrq->data && !host->mrq->data->error)
+ send_stop_cmd(host);
+ /* fall through */
+
+ case STATE_SENDING_STOP:
+ if (!rk29_sdmmc_test_and_clear_pending(host,
+ EVENT_CMD_COMPLETE))
+ break;
+ if(!host->mrq){
+ dev_info(host->dev, "%s-> host->mrq = NULL\n", __func__);
+ rk29_sdmmc_show_info(host);
+ }
+ if(host->mrq->stop)
+ rk29_sdmmc_command_complete(host, host->mrq->stop);
+ rk29_sdmmc_request_end(host);
+ goto unlock;
+ case STATE_DATA_ERROR:
+ state = STATE_DATA_BUSY;
+ break;
+ }
+ } while (state != prev_state);
- if(pending & SDMMC_INT_RTO)
- {
- xbwprintk(7, "%s..%d.. CMD%d CMD_ERROR_FLAGS INT=0x%x ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, host->cmd->opcode,pending, host->dma_name);
+ host->state = state;
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_RTO);
- host->cmd_status = status;
- smp_wmb();
- rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
+unlock:
+ spin_unlock(&host->lock);
- if(!(pending & SDMMC_INT_CMD_DONE))
- tasklet_schedule(&host->tasklet);
+}
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
- }
- if(pending & SDMMC_INT_HLE)
- {
- printk("%s: write error due to hardware locked. Please check your hardware. ==xbw[%s]==\n",\
- __FUNCTION__, host->dma_name);
-
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_HLE);
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
- }
+static irqreturn_t rk29_sdmmc_isr(int irq, void *dev_id)
+{
+ struct rk29_sdmmc *host = dev_id;
+ unsigned int intsts;
+ intsts = rk29_sdmmc_read(host->regs, SDMMC_MINTSTS);
- if(pending & SDMMC_INT_DTO)
- {
- xbwprintk(7, "%s..%d.. CMD%d INT_DTO INT=0x%x ==xbw[%s]==\n", \
- __FUNCTION__, __LINE__,host->cmd->opcode,pending, host->dma_name);
-
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_DTO);
- del_timer_sync(&host->DTO_timer); //delete the timer for INT_DTO
+ spin_lock(&host->lock);
+ if(intsts & RK29_SDMMC_CMD_ERROR_FLAGS) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_INT_CMD_ERR);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,RK29_SDMMC_CMD_ERROR_FLAGS);
+ host->cmd_intsts = intsts;
+ smp_wmb();
+ rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
+ if(!host->mrq){
+ dev_info(host->dev, "%s-> host->mrq = NULL\n", __func__);
+ rk29_sdmmc_show_info(host);
+ }
+ else
+ dev_info(host->dev, "[cmd%d] cmd error(intsts 0x%x, host->state %d, pending_events %ld)\n",
+ host->mrq->cmd->opcode,intsts,host->state,host->pending_events);
+ tasklet_schedule(&host->tasklet);
+ }
- if (!host->data_status)
- host->data_status = status;
+ if (intsts & RK29_SDMMC_DATA_ERROR_FLAGS) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_INT_DATA_ERR);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,RK29_SDMMC_DATA_ERROR_FLAGS);
+ host->data_intsts = intsts;
+ smp_wmb();
+ rk29_sdmmc_set_pending(host, EVENT_DATA_ERROR);
+ if(!host->mrq){
+ dev_info(host->dev, "%s-> host->mrq = NULL\n", __func__);
+ rk29_sdmmc_show_info(host);
+ }
+ else
+ dev_info(host->dev, "[cmd%d] data error(intsts 0x%x, host->state %d, pending_events %ld)\n",
+ host->mrq->cmd->opcode, intsts,host->state,host->pending_events);
+ tasklet_schedule(&host->tasklet);
+ }
- smp_wmb();
+ if(intsts & SDMMC_INT_DTO) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_INT_DATA_DONE);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_DTO);
+ if (!host->data_intsts)
+ host->data_intsts = intsts;
+ smp_wmb();
+ rk29_sdmmc_set_pending(host, EVENT_DATA_COMPLETE);
+ tasklet_schedule(&host->tasklet);
+ }
+ if (intsts & SDMMC_INT_CMD_DONE) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_INT_CMD_DONE);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_CMD_DONE);
+ if(!host->cmd_intsts)
+ host->cmd_intsts = intsts;
+
+ smp_wmb();
+ rk29_sdmmc_set_pending(host, EVENT_CMD_COMPLETE);
+ tasklet_schedule(&host->tasklet);
+ }
+ if(host->is_sdio && (intsts & SDMMC_INT_SDIO)) {
+ rk29_sdmmc_set_mrq_status(host, MRQ_INT_SDIO);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_SDIO);
+ mmc_signal_sdio_irq(host->mmc);
+ }
+ spin_unlock(&host->lock);
+ return IRQ_HANDLED;
+}
- rk29_sdmmc_set_pending(host, EVENT_DATA_COMPLETE);
- tasklet_schedule(&host->tasklet);
+static void rk29_sdmmc_dma_complete(void *arg, int size, enum rk29_dma_buffresult result)
+{
+ struct rk29_sdmmc *host = arg;
+
+ dev_dbg(host->dev, "DMA complete\n");
+ rk29_sdmmc_set_mrq_status(host, MRQ_DMA_DONE);
+}
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
- }
+static void rk29_sdmmc_detect_change(struct rk29_sdmmc *host)
+{
+ spin_lock(&host->lock);
+ del_timer(&host->monitor_timer);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, ~SDMMC_INT_SDIO);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK,
+ rk29_sdmmc_read(host->regs, SDMMC_INTMASK) &
+ ~(SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS));
+ if (host->mrq) {
+ switch (host->state) {
+ case STATE_IDLE:
+ break;
+ case STATE_SENDING_CMD:
+ if(host->mrq->cmd)
+ host->mrq->cmd->error = -ENOMEDIUM;
+ if (!host->mrq->data)
+ break;
+ /* fall through */
+ case STATE_SENDING_DATA:
+ if(host->mrq->data)
+ host->mrq->data->error = -ENOMEDIUM;
+ rk29_sdmmc_stop_dma(host);
+ break;
+ case STATE_DATA_BUSY:
+ case STATE_DATA_ERROR:
+ if (host->mrq->data && host->mrq->data->error == -EINPROGRESS)
+ host->mrq->data->error = -ENOMEDIUM;
+ if (!host->mrq->stop)
+ break;
+ /* fall through */
+ case STATE_SENDING_STOP:
+ if(host->mrq->stop) {
+ host->mrq->stop->error = -ENOMEDIUM;
+ }
+ break;
+ }
+ rk29_sdmmc_request_end(host);
+ }
+ rk29_sdmmc_reset_fifo(host);
+ spin_unlock(&host->lock);
+ mmc_detect_change(host->mmc, 0);
+}
- if (pending & SDMMC_INT_FRUN)
- {
- printk("%s: INT=0x%x Oh!My God,let me see!What happened?Why?Where? ==xbw[%s]==\n", \
- __FUNCTION__, pending,host->dma_name);
-
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_FRUN);
- spin_unlock_irqrestore(&host->lock, iflags);
- return IRQ_HANDLED;
- }
+static void rk29_sdmmc1_status_notify_cb(int card_present, void *dev_id)
+{
+ struct rk29_sdmmc *host = dev_id;
- if (pending & SDMMC_INT_RXDR)
- {
- xbwprintk(6, "%s..%d.. SDMMC_INT_RXDR INT=0x%x ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, pending, host->dma_name);
+ card_present = rk29_sdmmc_get_cd(host->mmc);
+ dev_info(host->dev, "sdio change detected,status is %d\n",card_present);
+
+ rk29_sdmmc_detect_change(host);
+}
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_RXDR); // clear interrupt
- rk29_sdmmc_do_pio_read(host);
- }
+static void rk29_sdmmc_get_dma_dma_info(struct rk29_sdmmc *host)
+{
+ if(host->is_sdio)
+ host->dma_info = dma_infos[1];
+ else
+ host->dma_info = dma_infos[0];
+}
- if (pending & SDMMC_INT_TXDR)
- {
- xbwprintk(6, "%s..%d.. SDMMC_INT_TXDR INT=0x%x ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, pending, host->dma_name);
+static irqreturn_t rk29_sdmmc_detect_change_isr(int irq, void *dev_id);
+static void rk29_sdmmc_detect_change_work(struct work_struct *work)
+{
+ int ret;
+ struct rk29_sdmmc *host = container_of(work, struct rk29_sdmmc, work.work);
- rk29_sdmmc_do_pio_write(host);
+ dev_info(host->dev, "sd detect change, card is %s\n",
+ rk29_sdmmc_get_cd(host->mmc)?"inserted":"removed");
+ if(host->enable_sd_warkup && rk29_sdmmc_get_cd(host->mmc))
+ rk28_send_wakeup_key();
+ rk29_sdmmc_detect_change(host);
- rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,SDMMC_INT_TXDR); // clear interrupt
- }
+ free_irq(host->gpio_irq, host);
+ ret = request_irq(host->gpio_irq,
+ rk29_sdmmc_detect_change_isr,
+ rk29_sdmmc_get_cd(host->mmc)?IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING,
+ "sd_detect",
+ host);
+ if(ret < 0)
+ dev_err(host->dev, "gpio request_irq error\n");
+}
+static irqreturn_t rk29_sdmmc_detect_change_isr(int irq, void *dev_id)
+{
+ struct rk29_sdmmc *host = dev_id;
- spin_unlock_irqrestore(&host->lock, iflags);
+ disable_irq_nosync(host->gpio_irq);
+ if(rk29_sdmmc_get_cd(host->mmc))
+ schedule_delayed_work(&host->work, msecs_to_jiffies(500));
+ else
+ schedule_delayed_work(&host->work, 0);
+
return IRQ_HANDLED;
}
-
-/*
- *
- * MMC card detect thread, kicked off from detect interrupt, 1 timer
- *
- */
-static void rk29_sdmmc_detect_change(unsigned long data)
+static void rk29_sdmmc_monitor_timer(unsigned long data)
{
struct rk29_sdmmc *host = (struct rk29_sdmmc *)data;
-
- if(!host->mmc)
- return;
-
- smp_rmb();
-
- if(RK29_CTRL_SDMMC_ID == host->pdev->id)
- {
- host->mmc->re_initialized_flags =1;
- }
-
- mmc_detect_change(host->mmc, 0);
-
+
+ if(!rk29_sdmmc_test_mrq_status(host, MRQ_REQUEST_DONE)){
+ dev_info(host->dev, "no dto interrupt\n");
+ rk29_sdmmc_show_info(host);
+ host->mrq->cmd->error = -ETIMEDOUT;
+ if(host->mrq->data)
+ host->mrq->data->error = -ETIMEDOUT;
+ rk29_sdmmc_request_end(host);
+ //rk29_sdmmc_reset_ctrl(host);
+ }
+
}
-static void rk29_sdmmc1_check_status(unsigned long data)
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void rk29_sdmmc_early_suspend(struct early_suspend *h)
{
- struct rk29_sdmmc *host = (struct rk29_sdmmc *)data;
- struct rk29_sdmmc_platform_data *pdata = host->pdev->dev.platform_data;
- unsigned int status;
-
- status = pdata->status(mmc_dev(host->mmc));
-
- if (status ^ host->oldstatus)
- {
- pr_info("%s: slot status change detected(%d-%d)\n",mmc_hostname(host->mmc), host->oldstatus, status);
- if (status)
- {
- set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(200));
- }
- else
- {
- clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- rk29_sdmmc_detect_change((unsigned long)host);
- }
- }
+ struct rk29_sdmmc *host = container_of(h,
+ struct rk29_sdmmc,
+ early_suspend);
- host->oldstatus = status;
+ dev_dbg(host->dev, "Enter rk29_sdmmc_early_suspend\n");
}
-static void rk29_sdmmc1_status_notify_cb(int card_present, void *dev_id)
+static void rk29_sdmmc_early_resume(struct early_suspend *h)
{
- struct rk29_sdmmc *host = dev_id;
- printk(KERN_INFO "%s, card_present %d\n", mmc_hostname(host->mmc), card_present);
- rk29_sdmmc1_check_status((unsigned long)host);
+ struct rk29_sdmmc *host = container_of(h,
+ struct rk29_sdmmc,
+ early_suspend);
+
+ dev_dbg(host->dev, "Exit rk29_sdmmc_early_resume\n");
}
+#endif
static int rk29_sdmmc_probe(struct platform_device *pdev)
struct rk29_sdmmc *host;
struct resource *regs;
struct rk29_sdmmc_platform_data *pdata;
- int irq;
int ret = 0;
- /* must have platform data */
pdata = pdev->dev.platform_data;
if (!pdata) {
dev_err(&pdev->dev, "Platform data missing\n");
- ret = -ENODEV;
- host->errorstep = 0x87;
- goto out;
- }
-
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs)
- {
- host->errorstep = 0x88;
- return -ENXIO;
+ return -ENODEV;
}
+ if(pdata->io_init)
+ pdata->io_init();
mmc = mmc_alloc_host(sizeof(struct rk29_sdmmc), &pdev->dev);
if (!mmc)
- {
- host->errorstep = 0x89;
- ret = -ENOMEM;
- goto rel_regions;
- }
+ return -ENOMEM;
host = mmc_priv(mmc);
host->mmc = mmc;
- host->pdev = pdev;
-
- host->ctype = 0; // set default 1 bit mode
- host->errorstep = 0;
- host->bus_mode = 5;
- host->old_cmd = 100;
- host->clock =0;
- host->old_div = 0xFF;
- host->error_times = 0;
+ host->dev = &pdev->dev;
+ host->mrq = NULL;
+ host->state = STATE_IDLE;
+ host->div = -1;
+ host->is_init = 1;
+ host->is_sdio = rk29_sdmmc_is_sdio(pdata);
+
+ if(host->is_sdio)
+ sdio_host = host;
+ host->get_wifi_cd = pdata->status;
+
+ host->irq = platform_get_irq(pdev, 0);
+ if (host->irq < 0) {
+ dev_err(&pdev->dev, "platform_get_irq error\n");
+ ret = host->irq;
+ goto err_mmc_free_host;
+ }
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "platform_get_resource error\n");
+ ret = -ENXIO;
+ goto err_mmc_free_host;
+ }
-#ifdef CONFIG_PM
- host->gpio_det = pdata->detect_irq;
-#endif
-
- if(pdata->io_init)
- pdata->io_init();
-
- spin_lock_init(&host->lock);
-
-#ifdef RK29_SDMMC_LIST_QUEUE
- INIT_LIST_HEAD(&host->queue);
-#endif
-
- host->clk = clk_get(&pdev->dev, "mmc");
- clk_set_rate(host->clk,SDHC_FPP_FREQ);
- clk_enable(host->clk);
- clk_enable(clk_get(&pdev->dev, "hclk_mmc"));
-
- ret = -ENOMEM;
host->regs = ioremap(regs->start, regs->end - regs->start);
- if (!host->regs)
- {
- host->errorstep = 0x8A;
- goto err_freemap;
+ if (!host->regs){
+ dev_err(&pdev->dev, "ioremap error\n");
+ ret = ENXIO;
+ goto err_mmc_free_host;
}
+ spin_lock_init(&host->lock);
- mmc->ops = &rk29_sdmmc_ops[pdev->id];
- mmc->f_min = FOD_FREQ;
-#if 0
- mmc->f_max = SDHC_FPP_FREQ;
-#else
- if(RK29_CTRL_SDMMC_ID== host->pdev->id)
- {
- mmc->f_max = SDHC_FPP_FREQ;
- }
- else
- {
- mmc->f_max = SDHC_FPP_FREQ / 2;
- }
-
-#endif
- //mmc->ocr_avail = pdata->host_ocr_avail;
- mmc->ocr_avail = MMC_VDD_27_28|MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31
- | MMC_VDD_31_32|MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_34_35| MMC_VDD_35_36; ///set valid volage 2.7---3.6v
- mmc->caps = pdata->host_caps;
- mmc->re_initialized_flags = 1;
-
- /*
- * We can do SGIO
- */
- mmc->max_phys_segs = 64;
- mmc->max_hw_segs = 64;
-
- /*
- * Block size can be up to 2048 bytes, but must be a power of two.
- */
- mmc->max_blk_size = 4095;
-
- /*
- * No limit on the number of blocks transferred.
- */
- mmc->max_blk_count = 4096;
-
- /*
- * Since we only have a 16-bit data length register, we must
- * ensure that we don't exceed 2^16-1 bytes in a single request.
- */
- mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; //8M bytes(2K*4K)
-
- /*
- * Set the maximum segment size. Since we aren't doing DMA
- * (yet) we are only limited by the data length register.
- */
- mmc->max_seg_size = mmc->max_req_size;
-
- tasklet_init(&host->tasklet, rk29_sdmmc_tasklet_func, (unsigned long)host);
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- {
- host->errorstep = 0x8B;
- ret = -EINVAL;
- goto err_freemap;
+ /* dma init */
+ rk29_sdmmc_get_dma_dma_info(host);
+ ret = rk29_dma_request(host->dma_info.chn, &(host->dma_info.client), NULL);
+ if (ret < 0){
+ dev_err(&pdev->dev, "rk29_dma_request error\n");
+ goto err_iounmap;
}
+ ret = rk29_dma_config(host->dma_info.chn, 4, 1);
- memcpy(host->dma_name, pdata->dma_name, 8);
- host->use_dma = pdata->use_dma;
-
- /*DMA init*/
- if(host->use_dma)
- {
- host->dma_info = rk29_sdmmc_dma_infos[host->pdev->id];
- ret = rk29_dma_request(host->dma_info.chn, &(host->dma_info.client), NULL);
- if (ret < 0)
- {
- printk("%s..%d...rk29_dma_request error=%d.===xbw[%s]====\n", \
- __FUNCTION__, __LINE__,ret, host->dma_name);
- host->errorstep = 0x97;
- goto err_freemap;
- }
-
- ret = rk29_dma_config(host->dma_info.chn, 4);
- if(ret < 0)
- {
- printk("%s..%d.. rk29_dma_config error=%d ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, ret, host->dma_name);
- host->errorstep = 0x98;
- goto err_dmaunmap;
- }
-
- ret = rk29_dma_set_buffdone_fn(host->dma_info.chn, rk29_sdmmc_dma_complete);
- if(ret < 0)
- {
- printk("%s..%d.. dma_set_buffdone_fn error=%d ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, ret, host->dma_name);
- host->errorstep = 0x99;
- goto err_dmaunmap;
- }
-
- host->dma_addr = regs->start + SDMMC_DATA;
+ if (ret < 0){
+ dev_err(&pdev->dev, "rk29_dma_config error\n");
+ //goto err_rk29_dma_free;
}
+ ret = rk29_dma_set_buffdone_fn(host->dma_info.chn, rk29_sdmmc_dma_complete);
+ if (ret < 0){
+ dev_err(&pdev->dev, "rk29_dma_set_buffdone_fn error\n");
+ goto err_rk29_dma_free;
+ }
+ host->dma_addr = regs->start + SDMMC_DATA;
- rk29_sdmmc_hw_init(host);
-
- ret = request_irq(irq, rk29_sdmmc_interrupt, 0, dev_name(&pdev->dev), host);
- if (ret)
- {
-
- printk("%s..%d.. request_irq error=%d ====xbw[%s]====\n", \
- __FUNCTION__, __LINE__, ret, host->dma_name);
- host->errorstep = 0x8C;
- goto err_dmaunmap;
+ /* clk init */
+ host->clk = clk_get(&pdev->dev, "mmc");
+ if(host->is_sdio)
+ clk_set_rate(host->clk,RK29_SDIO_CLK * 1000000);
+ else
+ clk_set_rate(host->clk,RK29_SDCARD_CLK * 1000000);
+ clk_enable(host->clk);
+ clk_enable(clk_get(&pdev->dev, "hclk_mmc"));
+ host->bus_hz = clk_get_rate(host->clk);
+
+ /* reset all blocks */
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL,(SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET));
+ /* wait till resets clear */
+ while (rk29_sdmmc_read(host->regs, SDMMC_CTRL) & (SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET | SDMMC_CTRL_DMA_RESET));
+ /* Clear the interrupts for the host controller */
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, 0xFFFFFFFF);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK, 0); // disable all mmc interrupt first
+ /* Put in max timeout */
+ rk29_sdmmc_write(host->regs, SDMMC_TMOUT, 0xFFFFFFFF);
+
+ /* FIFO threshold settings */
+ rk29_sdmmc_write(host->regs, SDMMC_FIFOTH, ((0x3 << 28) | (0x0f << 16) | (0x10 << 0))); // RXMark = 15, TXMark = 16, DMA Size = 16
+ /* disable clock to CIU */
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA,0);
+ rk29_sdmmc_write(host->regs, SDMMC_CLKSRC,0);
+ rk29_sdmmc_write(host->regs, SDMMC_PWREN, 1);
+
+ ret = request_irq(host->irq, rk29_sdmmc_isr, 0, dev_name(&pdev->dev), host);
+ if (ret < 0){
+ dev_err(&pdev->dev, "request_irq error\n");
+ goto err_rk29_dma_free;
}
- /* setup sdmmc1 wifi card detect change */
+ /* card insert flags init*/
if (pdata->register_status_notify) {
pdata->register_status_notify(rk29_sdmmc1_status_notify_cb, host);
}
- if(RK29_CTRL_SDMMC_ID== host->pdev->id)
- {
- clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- }
-
-
- /* sdmmc1 wifi card slot status initially */
- if (pdata->status) {
- host->oldstatus = pdata->status(mmc_dev(host->mmc));
- if (host->oldstatus) {
- set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- }else {
- clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
- }
- }
-
- /* Create card detect handler thread */
- setup_timer(&host->detect_timer, rk29_sdmmc_detect_change,(unsigned long)host);
- setup_timer(&host->request_timer,rk29_sdmmc_INT_CMD_DONE_timeout,(unsigned long)host);
- setup_timer(&host->DTO_timer,rk29_sdmmc_INT_DTO_timeout,(unsigned long)host);
-
- platform_set_drvdata(pdev, mmc);
-
- mmc_add_host(mmc);
-
-#ifdef RK29_SDMMC_NOTIFY_REMOVE_INSERTION
-
- globalSDhost[pdev->id] = (struct rk29_sdmmc *)host;
- if(RK29_CTRL_SDMMC_ID== host->pdev->id)
- {
- rk29_sdmmc_progress_add_attr(pdev);
- }
-#endif
+ /* add host */
+ if(host->is_sdio)
+ mmc->ops = &rk29_sdmmc_ops[1];
+ else
+ mmc->ops = &rk29_sdmmc_ops[0];
+
+ if (host->is_sdio)
+ mmc->pm_flags = MMC_PM_IGNORE_PM_NOTIFY; //ignore pm notify
+
+ mmc->f_min = DIV_ROUND_UP(host->bus_hz, 510);
+ mmc->f_max = host->bus_hz;
+ mmc->ocr_avail = pdata->host_ocr_avail;
+ mmc->caps = pdata->host_caps;
+ mmc->max_phys_segs = 64;
+ mmc->max_hw_segs = 64;
+ mmc->max_blk_size = 4095;
+ mmc->max_blk_count = 65535;
+ mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+ mmc->max_seg_size = mmc->max_req_size;
+
+ ret = mmc_add_host(mmc);
+ if (ret < 0){
+ dev_err(&pdev->dev, "mmc_add_host error\n");
+ goto err_free_irq;
+ }
#if defined (CONFIG_DEBUG_FS)
rk29_sdmmc_init_debugfs(host);
#endif
-
- printk("..Line%d..The End of the SDMMC probe %s ===xbw[%s]===\n\n", __LINE__, RK29_SDMMC_VERSION,host->dma_name);
- return 0;
-
-
-err_dmaunmap:
- if(host->use_dma)
- {
- rk29_dma_free(host->dma_info.chn, &host->dma_info.client);
+ tasklet_init(&host->tasklet, rk29_sdmmc_tasklet_func, (unsigned long)host);
+ setup_timer(&host->monitor_timer, rk29_sdmmc_monitor_timer,(unsigned long)host);
+
+ host->gpio_det = pdata->detect_irq;
+ if(!host->is_sdio && host->gpio_det != INVALID_GPIO) {
+ INIT_DELAYED_WORK(&host->work, rk29_sdmmc_detect_change_work);
+ ret = gpio_request(host->gpio_det, "sd_detect");
+ if(ret < 0) {
+ dev_err(&pdev->dev, "gpio_request error\n");
+ goto err_mmc_remove_host;
+ }
+ gpio_direction_input(host->gpio_det);
+ host->gpio_irq = gpio_to_irq(host->gpio_det);
+
+ ret = request_irq(host->gpio_irq,
+ rk29_sdmmc_detect_change_isr,
+ rk29_sdmmc_get_cd(host->mmc)?IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING,
+ "sd_detect",
+ host);
+ if(ret < 0) {
+ dev_err(&pdev->dev, "gpio request_irq error\n");
+ goto err_gpio_free;
+ }
+ host->enable_sd_warkup = pdata->enable_sd_wakeup;
+ if(host->enable_sd_warkup)
+ enable_irq_wake(host->gpio_irq);
}
-
-err_freemap:
+ platform_set_drvdata(pdev, host);
+ rk29_sdmmc_write(host->regs, SDMMC_CTYPE, 0);
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, 0xFFFFFFFF);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK,SDMMC_INT_CMD_DONE | SDMMC_INT_DTO | RK29_SDMMC_ERROR_FLAGS);
+ rk29_sdmmc_write(host->regs, SDMMC_CTRL,SDMMC_CTRL_INT_ENABLE);
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA,1);
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ host->early_suspend.suspend = rk29_sdmmc_early_suspend;
+ host->early_suspend.resume = rk29_sdmmc_early_resume;
+ host->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+ register_early_suspend(&host->early_suspend);
+#endif
+ dev_info(host->dev, "RK29 SDMMC controller at irq %d\n", host->irq);
+ return 0;
+ free_irq(host->gpio_irq, host);
+err_gpio_free:
+ gpio_free(host->gpio_det);
+err_mmc_remove_host:
+ mmc_remove_host(host->mmc);
+err_free_irq:
+ free_irq(host->irq, host);
+err_rk29_dma_free:
+ rk29_dma_free(host->dma_info.chn, &host->dma_info.client);
+err_iounmap:
iounmap(host->regs);
+err_mmc_free_host:
+ mmc_free_host(host->mmc);
-rel_regions:
- mmc_free_host(mmc);
-
-out:
-
+ while(1);
return ret;
+
}
static int __exit rk29_sdmmc_remove(struct platform_device *pdev)
{
+ struct rk29_sdmmc *host = platform_get_drvdata(pdev);
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct rk29_sdmmc *host;
- struct resource *regs;
-
- if (!mmc)
- return -1;
-
- host = mmc_priv(mmc);
-
+ rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, 0xFFFFFFFF);
+ rk29_sdmmc_write(host->regs, SDMMC_INTMASK, 0); // disable all mmc interrupt first
+
smp_wmb();
- rk29_sdmmc_control_clock(host, 0);
-
- /* Shutdown detect IRQ and kill detect thread */
- del_timer_sync(&host->detect_timer);
- del_timer_sync(&host->request_timer);
- del_timer_sync(&host->DTO_timer);
-
- tasklet_disable(&host->tasklet);
- free_irq(platform_get_irq(pdev, 0), host);
- if(host->use_dma)
- {
- rk29_dma_free(host->dma_info.chn, &host->dma_info.client);
- }
-
- mmc_remove_host(mmc);
-
- iounmap(host->regs);
+ free_irq(host->gpio_irq, host);
+ gpio_free(host->gpio_det);
+ mmc_remove_host(host->mmc);
+ free_irq(host->irq, host);
+ rk29_dma_free(host->dma_info.chn, &host->dma_info.client);
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(regs->start,resource_size(regs));
-
- mmc_free_host(mmc);
- platform_set_drvdata(pdev, NULL);
-
+ /* disable clock to CIU */
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA,0);
+ rk29_sdmmc_write(host->regs, SDMMC_CLKSRC,0);
+
+ iounmap(host->regs);
+ mmc_free_host(host->mmc);
return 0;
}
-
-
-#ifdef CONFIG_PM
-
-static irqreturn_t det_keys_isr(int irq, void *dev_id)
-{
- struct rk29_sdmmc *host = dev_id;
- dev_info(&host->pdev->dev, "sd det_gpio changed(%s), send wakeup key!\n",
- gpio_get_value(RK29_PIN2_PA2)?"removed":"insert");
- rk29_sdmmc_detect_change((unsigned long)dev_id);
-
- return IRQ_HANDLED;
-}
-
-static int rk29_sdmmc_sdcard_suspend(struct rk29_sdmmc *host)
+static int rk29_sdmmc_suspend(struct platform_device *pdev, pm_message_t state)
{
int ret = 0;
- rk29_mux_api_set(GPIO2A2_SDMMC0DETECTN_NAME, GPIO2L_GPIO2A2);
- gpio_request(RK29_PIN2_PA2, "sd_detect");
- gpio_direction_input(RK29_PIN2_PA2);
-
- host->gpio_irq = gpio_to_irq(RK29_PIN2_PA2);
- ret = request_irq(host->gpio_irq, det_keys_isr,
- (gpio_get_value(RK29_PIN2_PA2))?IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING,
- "sd_detect",
- host);
-
- enable_irq_wake(host->gpio_irq);
+#ifdef CONFIG_PM
+ struct rk29_sdmmc *host = platform_get_drvdata(pdev);
+ dev_info(host->dev, "Enter rk29_sdmmc_suspend\n");
+ if(host->mmc && !host->is_sdio && host->gpio_det != INVALID_GPIO){
+ ret = mmc_suspend_host(host->mmc,state);
+ if(!host->enable_sd_warkup)
+ free_irq(host->gpio_irq, host);
+ }
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA, 0);
+ clk_disable(host->clk);
+#endif
return ret;
}
-static void rk29_sdmmc_sdcard_resume(struct rk29_sdmmc *host)
-{
- disable_irq_wake(host->gpio_irq);
- free_irq(host->gpio_irq,host);
- gpio_free(RK29_PIN2_PA2);
- rk29_mux_api_set(GPIO2A2_SDMMC0DETECTN_NAME, GPIO2L_SDMMC0_DETECT_N);
-}
-
-
-
-static int rk29_sdmmc_suspend(struct platform_device *pdev, pm_message_t state)
-{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct rk29_sdmmc *host = mmc_priv(mmc);
- int ret = 0;
-
- if(host && host->pdev && (RK29_CTRL_SDMMC_ID == host->pdev->id)) //only the SDMMC0 have suspend-resume; noted by xbw
- {
- if (mmc)
- ret = mmc_suspend_host(mmc, state);
-
- if(rk29_sdmmc_sdcard_suspend(host) < 0)
- dev_info(&host->pdev->dev, "rk29_sdmmc_sdcard_suspend error\n");
- }
-
- return ret;
-}
static int rk29_sdmmc_resume(struct platform_device *pdev)
{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct rk29_sdmmc *host = mmc_priv(mmc);
- int ret = 0;
-
- if(host && host->pdev && (RK29_CTRL_SDMMC_ID == host->pdev->id)) //only the SDMMC0 have suspend-resume; noted by xbw
- {
- if (mmc)
- {
- rk29_sdmmc_sdcard_resume(host);
- ret = mmc_resume_host(mmc);
- }
- }
+ int ret = 0;
+#ifdef CONFIG_PM
+ struct rk29_sdmmc *host = platform_get_drvdata(pdev);
+ dev_info(host->dev, "Exit rk29_sdmmc_suspend\n");
+ clk_enable(host->clk);
+ rk29_sdmmc_write(host->regs, SDMMC_CLKENA, 1);
+ if(host->mmc && !host->is_sdio && host->gpio_det != INVALID_GPIO){
+ if(!host->enable_sd_warkup){
+ ret = request_irq(host->gpio_irq,
+ rk29_sdmmc_detect_change_isr,
+ rk29_sdmmc_get_cd(host->mmc)?IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING,
+ "sd_detect",
+ host);
+ if(ret < 0)
+ dev_err(host->dev, "gpio request_irq error\n");
+ }
+ host->is_init = 1;
+ ret = mmc_resume_host(host->mmc);
+ mmc_detect_change(host->mmc, 0);
+ }
+#endif
return ret;
}
-#else
-#define rk29_sdmmc_suspend NULL
-#define rk29_sdmmc_resume NULL
-#endif
-
static struct platform_driver rk29_sdmmc_driver = {
.suspend = rk29_sdmmc_suspend,
.resume = rk29_sdmmc_resume,
module_exit(rk29_sdmmc_exit);
MODULE_DESCRIPTION("Rk29 Multimedia Card Interface driver");
-MODULE_AUTHOR("xbw@rock-chips.com");
+MODULE_AUTHOR("Rockchips");
MODULE_LICENSE("GPL v2");
projects / firefly-linux-kernel-4.4.55.git / commitdiff