[PATCH] I2C: add i2c driver for TPS6501x
authorDavid Brownell <david-b@pacbell.net>
Wed, 25 May 2005 00:34:51 +0000 (17:34 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 22 Jun 2005 04:52:01 +0000 (21:52 -0700)
This adds an I2C driver for the TPS6501x series of power management chips.
It's used on many OMAP based boards, and this driver has been widely used
in the Linux-OMAP trees over the last year or so.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/i2c/chips/Kconfig
drivers/i2c/chips/Makefile
drivers/i2c/chips/tps65010.c [new file with mode: 0644]
include/asm-arm/arch-omap/tps65010.h

index 4da7641975fa0e62ba8b497125444b7225c474e6..028a6feebea54daf849971976859f9afd5944118 100644 (file)
@@ -1,5 +1,5 @@
 #
-# I2C Sensor device configuration
+# I2C Sensor and "other" chip configuration
 #
 
 menu "Hardware Sensors Chip support"
@@ -472,6 +472,23 @@ config ISP1301_OMAP
          This driver can also be built as a module.  If so, the module
          will be called isp1301_omap.
 
+# NOTE:  This isn't really OMAP-specific, except for the current
+# interface location in  <include/asm-arm/arch-omap/tps65010.h>
+# and having mostly OMAP-specific board support
+config TPS65010
+       tristate "TPS6501x Power Management chips"
+       depends on I2C && ARCH_OMAP
+       default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
+       help
+         If you say yes here you get support for the TPS6501x series of
+         Power Management chips.  These include voltage regulators,
+         lithium ion/polymer battery charging, and other features that
+         are often used in portable devices like cell phones and cameras.
+
+         This driver can also be built as a module.  If so, the module
+         will be called tps65010.
+
+
 config SENSORS_M41T00
        tristate "ST M41T00 RTC chip"
        depends on I2C && PPC32
index 2281435fc4c35658e42e29592a85a7f3f8e27613..5054ba5e470d536f475f615f79cc5026f379ad42 100644 (file)
@@ -1,5 +1,5 @@
 #
-# Makefile for the kernel hardware sensors chip drivers.
+# Makefile for sensor and "other" I2C chip drivers.
 #
 
 # asb100, then w83781d go first, as they can override other drivers' addresses.
@@ -43,7 +43,9 @@ obj-$(CONFIG_SENSORS_SMSC47M1)        += smsc47m1.o
 obj-$(CONFIG_SENSORS_VIA686A)  += via686a.o
 obj-$(CONFIG_SENSORS_W83627EHF)        += w83627ehf.o
 obj-$(CONFIG_SENSORS_W83L785TS)        += w83l785ts.o
+
 obj-$(CONFIG_ISP1301_OMAP)     += isp1301_omap.o
+obj-$(CONFIG_TPS65010)         += tps65010.o
 
 ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
new file mode 100644 (file)
index 0000000..c0ac01b
--- /dev/null
@@ -0,0 +1,1072 @@
+/*
+ * tps65010 - driver for tps6501x power management chips
+ *
+ * Copyright (C) 2004 Texas Instruments
+ * Copyright (C) 2004-2005 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#undef DEBUG
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/suspend.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/tps65010.h>
+
+/*-------------------------------------------------------------------------*/
+
+#define        DRIVER_VERSION  "2 May 2005"
+#define        DRIVER_NAME     (tps65010_driver.name)
+
+MODULE_DESCRIPTION("TPS6501x Power Management Driver");
+MODULE_LICENSE("GPL");
+
+/* only two addresses possible */
+#define        TPS_BASE        0x48
+static unsigned short normal_i2c[] = {
+       TPS_BASE,
+       I2C_CLIENT_END };
+static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
+
+I2C_CLIENT_INSMOD;
+
+static struct i2c_driver tps65010_driver;
+
+/*-------------------------------------------------------------------------*/
+
+/* This driver handles a family of multipurpose chips, which incorporate
+ * voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
+ * and other features often needed in portable devices like cell phones
+ * or digital cameras.
+ *
+ * The tps65011 and tps65013 have different voltage settings compared
+ * to tps65010 and tps65012.  The tps65013 has a NO_CHG status/irq.
+ * All except tps65010 have "wait" mode, possibly defaulted so that
+ * battery-insert != device-on.
+ *
+ * We could distinguish between some models by checking VDCDC1.UVLO or
+ * other registers, unless they've been changed already after powerup
+ * as part of board setup by a bootloader.
+ */
+enum tps_model {
+       TPS_UNKNOWN = 0,
+       TPS65010,
+       TPS65011,
+       TPS65012,
+       TPS65013,
+};
+
+struct tps65010 {
+       struct i2c_client       client;
+       struct semaphore        lock;
+       int                     irq;
+       struct work_struct      work;
+       struct dentry           *file;
+       unsigned                charging:1;
+       unsigned                por:1;
+       unsigned                model:8;
+       u16                     vbus;
+       unsigned long           flags;
+#define        FLAG_VBUS_CHANGED       0
+#define        FLAG_IRQ_ENABLE         1
+
+       /* copies of last register state */
+       u8                      chgstatus, regstatus, chgconf;
+       u8                      nmask1, nmask2;
+
+       /* plus four GPIOs, probably used to switch power */
+};
+
+#define        POWER_POLL_DELAY        msecs_to_jiffies(800)
+
+/*-------------------------------------------------------------------------*/
+
+#if    defined(DEBUG) || defined(CONFIG_DEBUG_FS)
+
+static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
+{
+       snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
+               chgstatus,
+               (chgstatus & TPS_CHG_USB) ? " USB" : "",
+               (chgstatus & TPS_CHG_AC) ? " AC" : "",
+               (chgstatus & TPS_CHG_THERM) ? " therm" : "",
+               (chgstatus & TPS_CHG_TERM) ? " done" :
+                       ((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+                               ? " (charging)" : ""),
+               (chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",
+               (chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",
+               (chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",
+               (chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");
+}
+
+static void dbg_regstat(char *buf, size_t len, u8 regstatus)
+{
+       snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
+               regstatus,
+               (regstatus & TPS_REG_ONOFF) ? "off" : "(on)",
+               (regstatus & TPS_REG_COVER) ? " uncover" : "",
+               (regstatus & TPS_REG_UVLO) ? " UVLO" : "",
+               (regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",
+               (regstatus & TPS_REG_PG_LD02) ? " ld01_bad" : "",
+               (regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",
+               (regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",
+               (regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");
+}
+
+static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
+{
+       char *hibit;
+
+       if (por)
+               hibit = (chgconfig & TPS_CHARGE_POR)
+                               ? "POR=69ms" : "POR=1sec";
+       else
+               hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
+
+       snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
+               chgconfig, hibit,
+               (chgconfig & TPS_CHARGE_RESET) ? " reset" : "",
+               (chgconfig & TPS_CHARGE_FAST) ? " fast" : "",
+               ({int p; switch ((chgconfig >> 3) & 3) {
+               case 3:         p = 100; break;
+               case 2:         p = 75; break;
+               case 1:         p = 50; break;
+               default:        p = 25; break;
+               }; p; }),
+               (chgconfig & TPS_VBUS_CHARGING)
+                       ? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
+                       : 0,
+               (chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
+}
+
+#endif
+
+#ifdef DEBUG
+
+static void show_chgstatus(const char *label, u8 chgstatus)
+{
+       char buf [100];
+
+       dbg_chgstat(buf, sizeof buf, chgstatus);
+       pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+static void show_regstatus(const char *label, u8 regstatus)
+{
+       char buf [100];
+
+       dbg_regstat(buf, sizeof buf, regstatus);
+       pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+static void show_chgconfig(int por, const char *label, u8 chgconfig)
+{
+       char buf [100];
+
+       dbg_chgconf(por, buf, sizeof buf, chgconfig);
+       pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
+}
+
+#else
+
+static inline void show_chgstatus(const char *label, u8 chgstatus) { }
+static inline void show_regstatus(const char *label, u8 chgstatus) { }
+static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
+
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+
+static int dbg_show(struct seq_file *s, void *_)
+{
+       struct tps65010 *tps = s->private;
+       u8              value, v2;
+       unsigned        i;
+       char            buf[100];
+       const char      *chip;
+
+       switch (tps->model) {
+       case TPS65010:  chip = "tps65010"; break;
+       case TPS65011:  chip = "tps65011"; break;
+       case TPS65012:  chip = "tps65012"; break;
+       case TPS65013:  chip = "tps65013"; break;
+       default:        chip = NULL; break;
+       }
+       seq_printf(s, "driver  %s\nversion %s\nchip    %s\n\n",
+                       DRIVER_NAME, DRIVER_VERSION, chip);
+
+       down(&tps->lock);
+
+       /* FIXME how can we tell whether a battery is present?
+        * likely involves a charge gauging chip (like BQ26501).
+        */
+
+       seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
+
+
+       /* registers for monitoring battery charging and status; note
+        * that reading chgstat and regstat may ack IRQs...
+        */
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
+       dbg_chgconf(tps->por, buf, sizeof buf, value);
+       seq_printf(s, "chgconfig %s", buf);
+
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS);
+       dbg_chgstat(buf, sizeof buf, value);
+       seq_printf(s, "chgstat   %s", buf);
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK1);
+       dbg_chgstat(buf, sizeof buf, value);
+       seq_printf(s, "mask1     %s", buf);
+       /* ignore ackint1 */
+
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS);
+       dbg_regstat(buf, sizeof buf, value);
+       seq_printf(s, "regstat   %s", buf);
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_MASK2);
+       dbg_regstat(buf, sizeof buf, value);
+       seq_printf(s, "mask2     %s\n", buf);
+       /* ignore ackint2 */
+
+       (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
+
+
+       /* VMAIN voltage, enable lowpower, etc */
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1);
+       seq_printf(s, "vdcdc1    %02x\n", value);
+
+       /* VCORE voltage, vibrator on/off */
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2);
+       seq_printf(s, "vdcdc2    %02x\n", value);
+
+       /* both LD0s, and their lowpower behavior */
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1);
+       seq_printf(s, "vregs1    %02x\n\n", value);
+
+
+       /* LEDs and GPIOs */
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_ON);
+       v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED1_PER);
+       seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",
+               (value & 0x80)
+                       ? ((v2 & 0x80) ? "on" : "off")
+                       : ((v2 & 0x80) ? "blink" : "(nPG)"),
+               value, v2,
+               (value & 0x7f) * 10, (v2 & 0x7f) * 100);
+
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_ON);
+       v2 = i2c_smbus_read_byte_data(&tps->client, TPS_LED2_PER);
+       seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",
+               (value & 0x80)
+                       ? ((v2 & 0x80) ? "on" : "off")
+                       : ((v2 & 0x80) ? "blink" : "off"),
+               value, v2,
+               (value & 0x7f) * 10, (v2 & 0x7f) * 100);
+
+       value = i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO);
+       v2 = i2c_smbus_read_byte_data(&tps->client, TPS_MASK3);
+       seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);
+
+       for (i = 0; i < 4; i++) {
+               if (value & (1 << (4 +i)))
+                       seq_printf(s, "  gpio%d-out %s\n", i + 1,
+                               (value & (1 << i)) ? "low" : "hi ");
+               else
+                       seq_printf(s, "  gpio%d-in  %s %s %s\n", i + 1,
+                               (value & (1 << i)) ? "hi " : "low",
+                               (v2 & (1 << i)) ? "no-irq" : "irq",
+                               (v2 & (1 << (4 + i))) ? "rising" : "falling");
+       }
+
+       up(&tps->lock);
+       return 0;
+}
+
+static int dbg_tps_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, dbg_show, inode->u.generic_ip);
+}
+
+static struct file_operations debug_fops = {
+       .open           = dbg_tps_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+#define        DEBUG_FOPS      &debug_fops
+
+#else
+#define        DEBUG_FOPS      NULL
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/* handle IRQS in a task context, so we can use I2C calls */
+static void tps65010_interrupt(struct tps65010 *tps)
+{
+       u8 tmp = 0, mask, poll;
+
+       /* IRQs won't trigger irqs for certain events, but we can get
+        * others by polling (normally, with external power applied).
+        */
+       poll = 0;
+
+       /* regstatus irqs */
+       if (tps->nmask2) {
+               tmp = i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS);
+               mask = tmp ^ tps->regstatus;
+               tps->regstatus = tmp;
+               mask &= tps->nmask2;
+       } else
+               mask = 0;
+       if (mask) {
+               tps->regstatus =  tmp;
+               /* may need to shut something down ... */
+
+               /* "off" usually means deep sleep */
+               if (tmp & TPS_REG_ONOFF) {
+                       pr_info("%s: power off button\n", DRIVER_NAME);
+#if 0
+                       /* REVISIT:  this might need its own workqueue
+                        * plus tweaks including deadlock avoidance ...
+                        */
+                       software_suspend();
+#endif
+                       poll = 1;
+               }
+       }
+
+       /* chgstatus irqs */
+       if (tps->nmask1) {
+               tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS);
+               mask = tmp ^ tps->chgstatus;
+               tps->chgstatus = tmp;
+               mask &= tps->nmask1;
+       } else
+               mask = 0;
+       if (mask) {
+               unsigned        charging = 0;
+
+               show_chgstatus("chg/irq", tmp);
+               if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
+                       show_chgconfig(tps->por, "conf", tps->chgconf);
+
+               /* Unless it was turned off or disabled, we charge any
+                * battery whenever there's power available for it
+                * and the charger hasn't been disabled.
+                */
+               if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))
+                               && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+                               && (tps->chgconf & TPS_CHARGE_ENABLE)
+                               ) {
+                       if (tps->chgstatus & TPS_CHG_USB) {
+                               /* VBUS options are readonly until reconnect */
+                               if (mask & TPS_CHG_USB)
+                                       set_bit(FLAG_VBUS_CHANGED, &tps->flags);
+                               charging = 1;
+                       } else if (tps->chgstatus & TPS_CHG_AC)
+                               charging = 1;
+               }
+               if (charging != tps->charging) {
+                       tps->charging = charging;
+                       pr_info("%s: battery %scharging\n",
+                               DRIVER_NAME, charging ? "" :
+                               ((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
+                                       ? "NOT " : "dis"));
+               }
+       }
+
+       /* always poll to detect (a) power removal, without tps65013
+        * NO_CHG IRQ; or (b) restart of charging after stop.
+        */
+       if ((tps->model != TPS65013 || !tps->charging)
+                       && (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
+               poll = 1;
+       if (poll)
+               (void) schedule_delayed_work(&tps->work, POWER_POLL_DELAY);
+
+       /* also potentially gpio-in rise or fall */
+}
+
+/* handle IRQs and polling using keventd for now */
+static void tps65010_work(void *_tps)
+{
+       struct tps65010         *tps = _tps;
+
+       down(&tps->lock);
+
+       tps65010_interrupt(tps);
+
+       if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
+               int     status;
+               u8      chgconfig, tmp;
+
+               chgconfig = i2c_smbus_read_byte_data(&tps->client,
+                                       TPS_CHGCONFIG);
+               chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);
+               if (tps->vbus == 500)
+                       chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;
+               else if (tps->vbus >= 100)
+                       chgconfig |= TPS_VBUS_CHARGING;
+
+               status = i2c_smbus_write_byte_data(&tps->client,
+                               TPS_CHGCONFIG, chgconfig);
+
+               /* vbus update fails unless VBUS is connected! */
+               tmp = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
+               tps->chgconf = tmp;
+               show_chgconfig(tps->por, "update vbus", tmp);
+       }
+
+       if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
+               enable_irq(tps->irq);
+
+       up(&tps->lock);
+}
+
+static irqreturn_t tps65010_irq(int irq, void *_tps, struct pt_regs *regs)
+{
+       struct tps65010         *tps = _tps;
+
+       disable_irq_nosync(irq);
+       set_bit(FLAG_IRQ_ENABLE, &tps->flags);
+       (void) schedule_work(&tps->work);
+       return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct tps65010 *the_tps;
+
+static int __exit tps65010_detach_client(struct i2c_client *client)
+{
+       struct tps65010         *tps;
+
+       tps = container_of(client, struct tps65010, client);
+#ifdef CONFIG_ARM
+       if (machine_is_omap_h2())
+               omap_free_gpio(58);
+       if (machine_is_omap_osk())
+               omap_free_gpio(OMAP_MPUIO(1));
+#endif
+       free_irq(tps->irq, tps);
+       debugfs_remove(tps->file);
+       if (i2c_detach_client(client) == 0)
+               kfree(tps);
+       the_tps = 0;
+       return 0;
+}
+
+static int tps65010_noscan(struct i2c_adapter *bus)
+{
+       /* pure paranoia, in case someone adds another i2c bus
+        * after our init section's gone...
+        */
+       return -ENODEV;
+}
+
+/* no error returns, they'd just make bus scanning stop */
+static int __init
+tps65010_probe(struct i2c_adapter *bus, int address, int kind)
+{
+       struct tps65010         *tps;
+       int                     status;
+
+       if (the_tps) {
+               dev_dbg(&bus->dev, "only one %s for now\n", DRIVER_NAME);
+               return 0;
+       }
+
+       tps = kmalloc(sizeof *tps, GFP_KERNEL);
+       if (!tps)
+               return 0;
+
+       memset(tps, 0, sizeof *tps);
+       init_MUTEX(&tps->lock);
+       INIT_WORK(&tps->work, tps65010_work, tps);
+       tps->irq = -1;
+       tps->client.addr = address;
+       i2c_set_clientdata(&tps->client, tps);
+       tps->client.adapter = bus;
+       tps->client.driver = &tps65010_driver;
+       strlcpy(tps->client.name, DRIVER_NAME, I2C_NAME_SIZE);
+
+       status = i2c_attach_client(&tps->client);
+       if (status < 0) {
+               dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
+                               DRIVER_NAME, address, status);
+fail1:
+               kfree(tps);
+               return 0;
+       }
+
+#ifdef CONFIG_ARM
+       if (machine_is_omap_h2()) {
+               tps->model = TPS65010;
+               omap_cfg_reg(W4_GPIO58);
+               tps->irq = OMAP_GPIO_IRQ(58);
+               omap_request_gpio(58);
+               omap_set_gpio_direction(58, 1);
+               omap_set_gpio_edge_ctrl(58, OMAP_GPIO_FALLING_EDGE);
+       }
+       if (machine_is_omap_osk()) {
+               tps->model = TPS65010;
+               // omap_cfg_reg(U19_1610_MPUIO1);
+               tps->irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1));
+               omap_request_gpio(OMAP_MPUIO(1));
+               omap_set_gpio_direction(OMAP_MPUIO(1), 1);
+               omap_set_gpio_edge_ctrl(OMAP_MPUIO(1), OMAP_GPIO_FALLING_EDGE);
+       }
+       if (machine_is_omap_h3()) {
+               tps->model = TPS65013;
+
+               // FIXME set up this board's IRQ ...
+       }
+#else
+#define set_irq_type(num,trigger)      do{}while(0)
+#endif
+
+       if (tps->irq > 0) {
+               set_irq_type(tps->irq, IRQT_LOW);
+               status = request_irq(tps->irq, tps65010_irq,
+                       SA_SAMPLE_RANDOM, DRIVER_NAME, tps);
+               if (status < 0) {
+                       dev_dbg(&tps->client.dev, "can't get IRQ %d, err %d\n",
+                                       tps->irq, status);
+                       i2c_detach_client(&tps->client);
+                       goto fail1;
+               }
+#ifdef CONFIG_ARM
+               /* annoying race here, ideally we'd have an option
+                * to claim the irq now and enable it later.
+                */
+               disable_irq(tps->irq);
+               set_bit(FLAG_IRQ_ENABLE, &tps->flags);
+#endif
+       } else
+               printk(KERN_WARNING "%s: IRQ not configured!\n",
+                               DRIVER_NAME);
+
+
+       switch (tps->model) {
+       case TPS65010:
+       case TPS65012:
+               tps->por = 1;
+               break;
+       case TPS_UNKNOWN:
+               printk(KERN_WARNING "%s: unknown TPS chip\n", DRIVER_NAME);
+               break;
+       /* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
+       }
+       tps->chgconf = i2c_smbus_read_byte_data(&tps->client, TPS_CHGCONFIG);
+       show_chgconfig(tps->por, "conf/init", tps->chgconf);
+
+       show_chgstatus("chg/init",
+               i2c_smbus_read_byte_data(&tps->client, TPS_CHGSTATUS));
+       show_regstatus("reg/init",
+               i2c_smbus_read_byte_data(&tps->client, TPS_REGSTATUS));
+
+       pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
+               i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC1),
+               i2c_smbus_read_byte_data(&tps->client, TPS_VDCDC2),
+               i2c_smbus_read_byte_data(&tps->client, TPS_VREGS1));
+       pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
+               i2c_smbus_read_byte_data(&tps->client, TPS_DEFGPIO),
+               i2c_smbus_read_byte_data(&tps->client, TPS_MASK3));
+
+       tps65010_driver.attach_adapter = tps65010_noscan;
+       the_tps = tps;
+
+#if    defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
+       /* USB hosts can't draw VBUS.  OTG devices could, later
+        * when OTG infrastructure enables it.  USB peripherals
+        * could be relying on VBUS while booting, though.
+        */
+       tps->vbus = 100;
+#endif
+
+       /* unmask the "interesting" irqs, then poll once to
+        * kickstart monitoring, initialize shadowed status
+        * registers, and maybe disable VBUS draw.
+        */
+       tps->nmask1 = ~0;
+       (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK1, ~tps->nmask1);
+
+       tps->nmask2 = TPS_REG_ONOFF;
+       if (tps->model == TPS65013)
+               tps->nmask2 |= TPS_REG_NO_CHG;
+       (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK2, ~tps->nmask2);
+
+       (void) i2c_smbus_write_byte_data(&tps->client, TPS_MASK3, 0x0f
+               | i2c_smbus_read_byte_data(&tps->client, TPS_MASK3));
+
+       tps65010_work(tps);
+
+       tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
+                               tps, DEBUG_FOPS);
+       return 0;
+}
+
+static int __init tps65010_scan_bus(struct i2c_adapter *bus)
+{
+       if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA))
+               return -EINVAL;
+       return i2c_probe(bus, &addr_data, tps65010_probe);
+}
+
+static struct i2c_driver tps65010_driver = {
+       .owner          = THIS_MODULE,
+       .name           = "tps65010",
+       .id             = 888,          /* FIXME assign "official" value */
+       .flags          = I2C_DF_NOTIFY,
+       .attach_adapter = tps65010_scan_bus,
+       .detach_client  = __exit_p(tps65010_detach_client),
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Draw from VBUS:
+ *   0 mA -- DON'T DRAW (might supply power instead)
+ * 100 mA -- usb unit load (slowest charge rate)
+ * 500 mA -- usb high power (fast battery charge)
+ */
+int tps65010_set_vbus_draw(unsigned mA)
+{
+       unsigned long   flags;
+
+       if (!the_tps)
+               return -ENODEV;
+
+       /* assumes non-SMP */
+       local_irq_save(flags);
+       if (mA >= 500)
+               mA = 500;
+       else if (mA >= 100)
+               mA = 100;
+       else
+               mA = 0;
+       the_tps->vbus = mA;
+       if ((the_tps->chgstatus & TPS_CHG_USB)
+                       && test_and_set_bit(
+                               FLAG_VBUS_CHANGED, &the_tps->flags)) {
+               /* gadget drivers call this in_irq() */
+               (void) schedule_work(&the_tps->work);
+       }
+       local_irq_restore(flags);
+
+       return 0;
+}
+EXPORT_SYMBOL(tps65010_set_vbus_draw);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_gpio_out_value parameter:
+ * gpio:  GPIO1, GPIO2, GPIO3 or GPIO4
+ * value: LOW or HIGH
+ */
+int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
+{
+       int      status;
+       unsigned defgpio;
+
+       if (!the_tps)
+               return -ENODEV;
+       if ((gpio < GPIO1) || (gpio > GPIO4))
+               return -EINVAL;
+
+       down(&the_tps->lock);
+
+       defgpio = i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO);
+
+       /* Configure GPIO for output */
+       defgpio |= 1 << (gpio + 3);
+
+       /* Writing 1 forces a logic 0 on that GPIO and vice versa */
+       switch (value) {
+       case LOW:
+               defgpio |= 1 << (gpio - 1);    /* set GPIO low by writing 1 */
+               break;
+       /* case HIGH: */
+       default:
+               defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
+               break;
+       }
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+               TPS_DEFGPIO, defgpio);
+
+       pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
+               gpio, value ? "high" : "low",
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_DEFGPIO));
+
+       up(&the_tps->lock);
+       return status;
+}
+EXPORT_SYMBOL(tps65010_set_gpio_out_value);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_led parameter:
+ * led:  LED1 or LED2
+ * mode: ON, OFF or BLINK
+ */
+int tps65010_set_led(unsigned led, unsigned mode)
+{
+       int      status;
+       unsigned led_on, led_per, offs;
+
+       if (!the_tps)
+               return -ENODEV;
+
+       if(led == LED1)
+               offs = 0;
+       else {
+               offs = 2;
+               led = LED2;
+       }
+
+       down(&the_tps->lock);
+
+       dev_dbg (&the_tps->client.dev, "led%i_on   0x%02x\n", led,
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs));
+
+       dev_dbg (&the_tps->client.dev, "led%i_per  0x%02x\n", led,
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_PER + offs));
+
+       switch (mode) {
+       case OFF:
+               led_on  = 1 << 7;
+               led_per = 0 << 7;
+               break;
+       case ON:
+               led_on  = 1 << 7;
+               led_per = 1 << 7;
+               break;
+       case BLINK:
+               led_on  = 0x30 | (0 << 7);
+               led_per = 0x08 | (1 << 7);
+               break;
+       default:
+               printk(KERN_ERR "%s: Wrong mode parameter for tps65010_set_led()\n",
+                      DRIVER_NAME);
+               up(&the_tps->lock);
+               return -EINVAL;
+       }
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_LED1_ON + offs, led_on);
+
+       if (status != 0) {
+               printk(KERN_ERR "%s: Failed to write led%i_on register\n",
+                      DRIVER_NAME, led);
+               up(&the_tps->lock);
+               return status;
+       }
+
+       dev_dbg (&the_tps->client.dev, "led%i_on   0x%02x\n", led,
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_ON + offs));
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_LED1_PER + offs, led_per);
+
+       if (status != 0) {
+               printk(KERN_ERR "%s: Failed to write led%i_per register\n",
+                      DRIVER_NAME, led);
+               up(&the_tps->lock);
+               return status;
+       }
+
+       dev_dbg (&the_tps->client.dev, "led%i_per  0x%02x\n", led,
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_LED1_PER + offs));
+
+       up(&the_tps->lock);
+
+       return status;
+}
+EXPORT_SYMBOL(tps65010_set_led);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_vib parameter:
+ * value: ON or OFF
+ */
+int tps65010_set_vib(unsigned value)
+{
+       int      status;
+       unsigned vdcdc2;
+
+       if (!the_tps)
+               return -ENODEV;
+
+       down(&the_tps->lock);
+
+       vdcdc2 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC2);
+       vdcdc2 &= ~(1 << 1);
+       if (value)
+               vdcdc2 |= (1 << 1);
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+               TPS_VDCDC2, vdcdc2);
+
+       pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
+
+       up(&the_tps->lock);
+       return status;
+}
+EXPORT_SYMBOL(tps65010_set_vib);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_set_low_pwr parameter:
+ * mode: ON or OFF
+ */
+int tps65010_set_low_pwr(unsigned mode)
+{
+       int      status;
+       unsigned vdcdc1;
+
+       if (!the_tps)
+               return -ENODEV;
+
+       down(&the_tps->lock);
+
+       pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
+               mode ? "enable" : "disable",
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
+
+       vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1);
+
+       switch (mode) {
+       case OFF:
+               vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
+               break;
+       /* case ON: */
+       default:
+               vdcdc1 |= TPS_ENABLE_LP;  /* enable ENABLE_LP bit */
+               break;
+       }
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_VDCDC1, vdcdc1);
+
+       if (status != 0)
+               printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
+                      DRIVER_NAME);
+       else
+               pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
+                       i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
+
+       up(&the_tps->lock);
+
+       return status;
+}
+EXPORT_SYMBOL(tps65010_set_low_pwr);
+
+/*-------------------------------------------------------------------------*/
+/* tps65010_config_vregs1 parameter:
+ * value to be written to VREGS1 register
+ * Note: The complete register is written, set all bits you need
+ */
+int tps65010_config_vregs1(unsigned value)
+{
+       int      status;
+
+       if (!the_tps)
+               return -ENODEV;
+
+       down(&the_tps->lock);
+
+       pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
+                       i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1));
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_VREGS1, value);
+
+       if (status != 0)
+               printk(KERN_ERR "%s: Failed to write vregs1 register\n",
+                       DRIVER_NAME);
+       else
+               pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
+                       i2c_smbus_read_byte_data(&the_tps->client, TPS_VREGS1));
+
+       up(&the_tps->lock);
+
+       return status;
+}
+EXPORT_SYMBOL(tps65010_config_vregs1);
+
+/*-------------------------------------------------------------------------*/
+/* tps65013_set_low_pwr parameter:
+ * mode: ON or OFF
+ */
+
+/* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
+       required if power supply is through a battery */
+
+int tps65013_set_low_pwr(unsigned mode)
+{
+       int      status;
+       unsigned vdcdc1, chgconfig;
+
+       if (!the_tps || the_tps->por)
+               return -ENODEV;
+
+       down(&the_tps->lock);
+
+       pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
+               DRIVER_NAME,
+               mode ? "enable" : "disable",
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG),
+               i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
+
+       chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG);
+       vdcdc1 = i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1);
+
+       switch (mode) {
+       case OFF:
+               chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
+               vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
+               break;
+       /* case ON: */
+       default:
+               chgconfig |= TPS65013_AUA;  /* enable AUA bit */
+               vdcdc1 |= TPS_ENABLE_LP;  /* enable ENABLE_LP bit */
+               break;
+       }
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_CHGCONFIG, chgconfig);
+       if (status != 0) {
+               printk(KERN_ERR "%s: Failed to write chconfig register\n",
+        DRIVER_NAME);
+               up(&the_tps->lock);
+               return status;
+       }
+
+       chgconfig = i2c_smbus_read_byte_data(&the_tps->client, TPS_CHGCONFIG);
+       the_tps->chgconf = chgconfig;
+       show_chgconfig(0, "chgconf", chgconfig);
+
+       status = i2c_smbus_write_byte_data(&the_tps->client,
+                       TPS_VDCDC1, vdcdc1);
+
+       if (status != 0)
+               printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
+        DRIVER_NAME);
+       else
+               pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
+                       i2c_smbus_read_byte_data(&the_tps->client, TPS_VDCDC1));
+
+       up(&the_tps->lock);
+
+       return status;
+}
+EXPORT_SYMBOL(tps65013_set_low_pwr);
+
+/*-------------------------------------------------------------------------*/
+
+static int __init tps_init(void)
+{
+       u32     tries = 3;
+       int     status = -ENODEV;
+
+       printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION);
+
+       /* some boards have startup glitches */
+       while (tries--) {
+               status = i2c_add_driver(&tps65010_driver);
+               if (the_tps)
+                       break;
+               i2c_del_driver(&tps65010_driver);
+               if (!tries) {
+                       printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME);
+                       return -ENODEV;
+               }
+               pr_debug("%s: re-probe ...\n", DRIVER_NAME);
+               msleep(10);
+       }
+
+#if defined(CONFIG_ARM)
+       if (machine_is_omap_osk()) {
+
+               // FIXME: More should be placed in the initialization code
+               //        of the submodules (DSP, ethernet, power management,
+               //        board-osk.c). Careful: I2C is initialized "late".
+
+               /* Let LED1 (D9) blink */
+               tps65010_set_led(LED1, BLINK);
+
+               /* Disable LED 2 (D2) */
+               tps65010_set_led(LED2, OFF);
+
+               /* Set GPIO 1 HIGH to disable VBUS power supply;
+                * OHCI driver powers it up/down as needed.
+                */
+               tps65010_set_gpio_out_value(GPIO1, HIGH);
+
+               /* Set GPIO 2 low to turn on LED D3 */
+               tps65010_set_gpio_out_value(GPIO2, HIGH);
+
+               /* Set GPIO 3 low to take ethernet out of reset */
+               tps65010_set_gpio_out_value(GPIO3, LOW);
+
+               /* gpio4 for VDD_DSP */
+
+               /* Enable LOW_PWR */
+               tps65010_set_low_pwr(ON);
+
+               /* Switch VLDO2 to 3.0V for AIC23 */
+               tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V | TPS_LDO1_ENABLE);
+
+       } else if (machine_is_omap_h2()) {
+               /* gpio3 for SD, gpio4 for VDD_DSP */
+
+               /* Enable LOW_PWR */
+               tps65010_set_low_pwr(ON);
+       } else if (machine_is_omap_h3()) {
+               /* gpio4 for SD, gpio3 for VDD_DSP */
+#ifdef CONFIG_PM
+               /* Enable LOW_PWR */
+               tps65013_set_low_pwr(ON);
+#endif
+       }
+#endif
+
+       return status;
+}
+/* NOTE:  this MUST be initialized before the other parts of the system
+ * that rely on it ... but after the i2c bus on which this relies.
+ * That is, much earlier than on PC-type systems, which don't often use
+ * I2C as a core system bus.
+ */
+subsys_initcall(tps_init);
+
+static void __exit tps_exit(void)
+{
+       i2c_del_driver(&tps65010_driver);
+}
+module_exit(tps_exit);
+
index 0f97bb2e8fcef91ffbe3fedbe6c0c1a7f139007b..b9aa2b3a390956cd5eef58563ecfcfb7f7fccffe 100644 (file)
 #ifndef __ASM_ARCH_TPS65010_H
 #define __ASM_ARCH_TPS65010_H
 
+/*
+ * ----------------------------------------------------------------------------
+ * Registers, all 8 bits
+ * ----------------------------------------------------------------------------
+ */
+
+#define        TPS_CHGSTATUS           0x01
+#      define  TPS_CHG_USB             (1 << 7)
+#      define  TPS_CHG_AC              (1 << 6)
+#      define  TPS_CHG_THERM           (1 << 5)
+#      define  TPS_CHG_TERM            (1 << 4)
+#      define  TPS_CHG_TAPER_TMO       (1 << 3)
+#      define  TPS_CHG_CHG_TMO         (1 << 2)
+#      define  TPS_CHG_PRECHG_TMO      (1 << 1)
+#      define  TPS_CHG_TEMP_ERR        (1 << 0)
+#define        TPS_REGSTATUS           0x02
+#      define  TPS_REG_ONOFF           (1 << 7)
+#      define  TPS_REG_COVER           (1 << 6)
+#      define  TPS_REG_UVLO            (1 << 5)
+#      define  TPS_REG_NO_CHG          (1 << 4)        /* tps65013 */
+#      define  TPS_REG_PG_LD02         (1 << 3)
+#      define  TPS_REG_PG_LD01         (1 << 2)
+#      define  TPS_REG_PG_MAIN         (1 << 1)
+#      define  TPS_REG_PG_CORE         (1 << 0)
+#define        TPS_MASK1               0x03
+#define        TPS_MASK2               0x04
+#define        TPS_ACKINT1             0x05
+#define        TPS_ACKINT2             0x06
+#define        TPS_CHGCONFIG           0x07
+#      define  TPS_CHARGE_POR          (1 << 7)        /* 65010/65012 */
+#      define  TPS65013_AUA            (1 << 7)        /* 65011/65013 */
+#      define  TPS_CHARGE_RESET        (1 << 6)
+#      define  TPS_CHARGE_FAST         (1 << 5)
+#      define  TPS_CHARGE_CURRENT      (3 << 3)
+#      define  TPS_VBUS_500MA          (1 << 2)
+#      define  TPS_VBUS_CHARGING       (1 << 1)
+#      define  TPS_CHARGE_ENABLE       (1 << 0)
+#define        TPS_LED1_ON             0x08
+#define        TPS_LED1_PER            0x09
+#define        TPS_LED2_ON             0x0a
+#define        TPS_LED2_PER            0x0b
+#define        TPS_VDCDC1              0x0c
+#      define  TPS_ENABLE_LP           (1 << 3)
+#define        TPS_VDCDC2              0x0d
+#define        TPS_VREGS1              0x0e
+#      define  TPS_LDO2_ENABLE (1 << 7)
+#      define  TPS_LDO2_OFF    (1 << 6)
+#      define  TPS_VLDO2_3_0V  (3 << 4)
+#      define  TPS_VLDO2_2_75V (2 << 4)
+#      define  TPS_VLDO2_2_5V  (1 << 4)
+#      define  TPS_VLDO2_1_8V  (0 << 4)
+#      define  TPS_LDO1_ENABLE (1 << 3)
+#      define  TPS_LDO1_OFF    (1 << 2)
+#      define  TPS_VLDO1_3_0V  (3 << 0)
+#      define  TPS_VLDO1_2_75V (2 << 0)
+#      define  TPS_VLDO1_2_5V  (1 << 0)
+#      define  TPS_VLDO1_ADJ   (0 << 0)
+#define        TPS_MASK3               0x0f
+#define        TPS_DEFGPIO             0x10
+
 /*
  * ----------------------------------------------------------------------------
  * Macros used by exported functions
@@ -71,10 +131,26 @@ extern int tps65010_set_gpio_out_value(unsigned gpio, unsigned value);
  */
 extern int tps65010_set_led(unsigned led, unsigned mode);
 
+/* tps65010_set_vib parameter:
+ * value: ON or OFF
+ */
+extern int tps65010_set_vib(unsigned value);
+
 /* tps65010_set_low_pwr parameter:
  * mode: ON or OFF
  */
 extern int tps65010_set_low_pwr(unsigned mode);
 
+/* tps65010_config_vregs1 parameter:
+ * value to be written to VREGS1 register
+ * Note: The complete register is written, set all bits you need
+ */
+extern int tps65010_config_vregs1(unsigned value);
+
+/* tps65013_set_low_pwr parameter:
+ * mode: ON or OFF
+ */
+extern int tps65013_set_low_pwr(unsigned mode);
+
 #endif /*  __ASM_ARCH_TPS65010_H */