#include <linux/init.h>
#include <linux/delay.h>
#include <linux/mm.h>
-#include <linux/fb.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <linux/vmalloc.h>
#include <linux/ioctl.h>
#include <linux/slab.h>
+#include <linux/console.h>
+#include <linux/backlight.h>
+#include <linux/gpio.h>
#include <video/sh_mobile_lcdc.h>
#include <asm/atomic.h>
-#define PALETTE_NR 16
+#include "sh_mobile_lcdcfb.h"
+#include "sh_mobile_meram.h"
+
#define SIDE_B_OFFSET 0x1000
#define MIRROR_OFFSET 0x2000
};
#define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs)
-/* per-channel registers */
-enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R,
- LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR,
- LDHAJR,
- NR_CH_REGS };
+#define MAX_XRES 1920
+#define MAX_YRES 1080
static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
[LDDCKPAT1R] = 0x400,
[LDSM1R] = 0x428,
[LDSM2R] = 0x42c,
[LDSA1R] = 0x430,
+ [LDSA2R] = 0x434,
[LDMLSR] = 0x438,
[LDHCNR] = 0x448,
[LDHSYNR] = 0x44c,
#define LDRCNTR_MRC 0x00000001
#define LDSR_MRS 0x00000100
-struct sh_mobile_lcdc_priv;
-struct sh_mobile_lcdc_chan {
- struct sh_mobile_lcdc_priv *lcdc;
- unsigned long *reg_offs;
- unsigned long ldmt1r_value;
- unsigned long enabled; /* ME and SE in LDCNT2R */
- struct sh_mobile_lcdc_chan_cfg cfg;
- u32 pseudo_palette[PALETTE_NR];
- unsigned long saved_ch_regs[NR_CH_REGS];
- struct fb_info *info;
- dma_addr_t dma_handle;
- struct fb_deferred_io defio;
- struct scatterlist *sglist;
- unsigned long frame_end;
- unsigned long pan_offset;
- wait_queue_head_t frame_end_wait;
- struct completion vsync_completion;
+static const struct fb_videomode default_720p = {
+ .name = "HDMI 720p",
+ .xres = 1280,
+ .yres = 720,
+
+ .left_margin = 220,
+ .right_margin = 110,
+ .hsync_len = 40,
+
+ .upper_margin = 20,
+ .lower_margin = 5,
+ .vsync_len = 5,
+
+ .pixclock = 13468,
+ .refresh = 60,
+ .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
};
struct sh_mobile_lcdc_priv {
struct notifier_block notifier;
unsigned long saved_shared_regs[NR_SHARED_REGS];
int started;
+ int forced_bpp; /* 2 channel LCDC must share bpp setting */
+ struct sh_mobile_meram_info *meram_dev;
};
static bool banked(int reg_nr)
case LDDFR:
case LDSM1R:
case LDSA1R:
+ case LDSA2R:
case LDMLSR:
case LDHCNR:
case LDHSYNR:
static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
{
- struct fb_var_screeninfo *var = &ch->info->var;
- unsigned long h_total, hsync_pos;
+ struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var;
+ unsigned long h_total, hsync_pos, display_h_total;
u32 tmp;
tmp = ch->ldmt1r_value;
lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r);
/* horizontal configuration */
- h_total = var->xres + var->hsync_len +
- var->left_margin + var->right_margin;
+ h_total = display_var->xres + display_var->hsync_len +
+ display_var->left_margin + display_var->right_margin;
tmp = h_total / 8; /* HTCN */
- tmp |= (var->xres / 8) << 16; /* HDCN */
+ tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */
lcdc_write_chan(ch, LDHCNR, tmp);
- hsync_pos = var->xres + var->right_margin;
+ hsync_pos = display_var->xres + display_var->right_margin;
tmp = hsync_pos / 8; /* HSYNP */
- tmp |= (var->hsync_len / 8) << 16; /* HSYNW */
+ tmp |= (display_var->hsync_len / 8) << 16; /* HSYNW */
lcdc_write_chan(ch, LDHSYNR, tmp);
/* vertical configuration */
- tmp = var->yres + var->vsync_len +
- var->upper_margin + var->lower_margin; /* VTLN */
- tmp |= var->yres << 16; /* VDLN */
+ tmp = display_var->yres + display_var->vsync_len +
+ display_var->upper_margin + display_var->lower_margin; /* VTLN */
+ tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */
lcdc_write_chan(ch, LDVLNR, tmp);
- tmp = var->yres + var->lower_margin; /* VSYNP */
- tmp |= var->vsync_len << 16; /* VSYNW */
+ tmp = display_var->yres + display_var->lower_margin; /* VSYNP */
+ tmp |= display_var->vsync_len << 16; /* VSYNW */
lcdc_write_chan(ch, LDVSYNR, tmp);
/* Adjust horizontal synchronisation for HDMI */
- tmp = ((var->xres & 7) << 24) |
- ((h_total & 7) << 16) |
- ((var->hsync_len & 7) << 8) |
+ display_h_total = display_var->xres + display_var->hsync_len +
+ display_var->left_margin + display_var->right_margin;
+ tmp = ((display_var->xres & 7) << 24) |
+ ((display_h_total & 7) << 16) |
+ ((display_var->hsync_len & 7) << 8) |
hsync_pos;
lcdc_write_chan(ch, LDHAJR, tmp);
}
static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
{
struct sh_mobile_lcdc_chan *ch;
- struct fb_videomode *lcd_cfg;
struct sh_mobile_lcdc_board_cfg *board_cfg;
unsigned long tmp;
- int k, m;
- int ret = 0;
+ int bpp = 0;
+ unsigned long ldddsr;
+ int k, m, ret;
/* enable clocks before accessing the hardware */
- for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
- if (priv->ch[k].enabled)
+ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ if (priv->ch[k].enabled) {
sh_mobile_lcdc_clk_on(priv);
+ if (!bpp)
+ bpp = priv->ch[k].info->var.bits_per_pixel;
+ }
+ }
/* reset */
lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LCDC_RESET);
m = 1 << 6;
tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
- lcdc_write_chan(ch, LDDCKPAT1R, 0x00000000);
+ /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider denominator */
+ lcdc_write_chan(ch, LDDCKPAT1R, 0);
lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
}
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
ch = &priv->ch[k];
- lcd_cfg = &ch->cfg.lcd_cfg;
if (!ch->enabled)
continue;
lcdc_write_chan(ch, LDPMR, 0);
board_cfg = &ch->cfg.board_cfg;
- if (board_cfg->setup_sys)
- ret = board_cfg->setup_sys(board_cfg->board_data, ch,
- &sh_mobile_lcdc_sys_bus_ops);
- if (ret)
- return ret;
+ if (board_cfg->setup_sys) {
+ ret = board_cfg->setup_sys(board_cfg->board_data,
+ ch, &sh_mobile_lcdc_sys_bus_ops);
+ if (ret)
+ return ret;
+ }
}
/* word and long word swap */
- lcdc_write(priv, _LDDDSR, lcdc_read(priv, _LDDDSR) | 6);
+ ldddsr = lcdc_read(priv, _LDDDSR);
+ if (priv->ch[0].info->var.nonstd)
+ lcdc_write(priv, _LDDDSR, ldddsr | 7);
+ else {
+ switch (bpp) {
+ case 16:
+ lcdc_write(priv, _LDDDSR, ldddsr | 6);
+ break;
+ case 24:
+ lcdc_write(priv, _LDDDSR, ldddsr | 7);
+ break;
+ case 32:
+ lcdc_write(priv, _LDDDSR, ldddsr | 4);
+ break;
+ }
+ }
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
+ unsigned long base_addr_y;
+ unsigned long base_addr_c = 0;
+ int pitch;
ch = &priv->ch[k];
if (!priv->ch[k].enabled)
/* set bpp format in PKF[4:0] */
tmp = lcdc_read_chan(ch, LDDFR);
- tmp &= ~(0x0001001f);
- tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0;
+ tmp &= ~0x0003031f;
+ if (ch->info->var.nonstd) {
+ tmp |= (ch->info->var.nonstd << 16);
+ switch (ch->info->var.bits_per_pixel) {
+ case 12:
+ break;
+ case 16:
+ tmp |= (0x1 << 8);
+ break;
+ case 24:
+ tmp |= (0x2 << 8);
+ break;
+ }
+ } else {
+ switch (ch->info->var.bits_per_pixel) {
+ case 16:
+ tmp |= 0x03;
+ break;
+ case 24:
+ tmp |= 0x0b;
+ break;
+ case 32:
+ break;
+ }
+ }
lcdc_write_chan(ch, LDDFR, tmp);
+ base_addr_y = ch->info->fix.smem_start;
+ base_addr_c = base_addr_y +
+ ch->info->var.xres *
+ ch->info->var.yres_virtual;
+ pitch = ch->info->fix.line_length;
+
+ /* test if we can enable meram */
+ if (ch->cfg.meram_cfg && priv->meram_dev &&
+ priv->meram_dev->ops) {
+ struct sh_mobile_meram_cfg *cfg;
+ struct sh_mobile_meram_info *mdev;
+ unsigned long icb_addr_y, icb_addr_c;
+ int icb_pitch;
+ int pf;
+
+ cfg = ch->cfg.meram_cfg;
+ mdev = priv->meram_dev;
+ /* we need to de-init configured ICBs before we
+ * we can re-initialize them.
+ */
+ if (ch->meram_enabled)
+ mdev->ops->meram_unregister(mdev, cfg);
+
+ ch->meram_enabled = 0;
+
+ if (ch->info->var.nonstd) {
+ if (ch->info->var.bits_per_pixel == 24)
+ pf = SH_MOBILE_MERAM_PF_NV24;
+ else
+ pf = SH_MOBILE_MERAM_PF_NV;
+ } else {
+ pf = SH_MOBILE_MERAM_PF_RGB;
+ }
+
+ ret = mdev->ops->meram_register(mdev, cfg, pitch,
+ ch->info->var.yres,
+ pf,
+ base_addr_y,
+ base_addr_c,
+ &icb_addr_y,
+ &icb_addr_c,
+ &icb_pitch);
+ if (!ret) {
+ /* set LDSA1R value */
+ base_addr_y = icb_addr_y;
+ pitch = icb_pitch;
+
+ /* set LDSA2R value if required */
+ if (base_addr_c)
+ base_addr_c = icb_addr_c;
+
+ ch->meram_enabled = 1;
+ }
+ }
+
/* point out our frame buffer */
- lcdc_write_chan(ch, LDSA1R, ch->info->fix.smem_start);
+ lcdc_write_chan(ch, LDSA1R, base_addr_y);
+ if (ch->info->var.nonstd)
+ lcdc_write_chan(ch, LDSA2R, base_addr_c);
/* set line size */
- lcdc_write_chan(ch, LDMLSR, ch->info->fix.line_length);
+ lcdc_write_chan(ch, LDMLSR, pitch);
/* setup deferred io if SYS bus */
tmp = ch->cfg.sys_bus_cfg.deferred_io_msec;
continue;
board_cfg = &ch->cfg.board_cfg;
- if (board_cfg->display_on)
+ if (board_cfg->display_on && try_module_get(board_cfg->owner)) {
board_cfg->display_on(board_cfg->board_data, ch->info);
+ module_put(board_cfg->owner);
+ }
+
+ if (ch->bl) {
+ ch->bl->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(ch->bl);
+ }
}
return 0;
* flush frame, and wait for frame end interrupt
* clean up deferred io and enable clock
*/
- if (ch->info->fbdefio) {
+ if (ch->info && ch->info->fbdefio) {
ch->frame_end = 0;
schedule_delayed_work(&ch->info->deferred_work, 0);
wait_event(ch->frame_end_wait, ch->frame_end);
sh_mobile_lcdc_clk_on(priv);
}
+ if (ch->bl) {
+ ch->bl->props.power = FB_BLANK_POWERDOWN;
+ backlight_update_status(ch->bl);
+ }
+
board_cfg = &ch->cfg.board_cfg;
- if (board_cfg->display_off)
+ if (board_cfg->display_off && try_module_get(board_cfg->owner)) {
board_cfg->display_off(board_cfg->board_data);
+ module_put(board_cfg->owner);
+ }
+
+ /* disable the meram */
+ if (ch->meram_enabled) {
+ struct sh_mobile_meram_cfg *cfg;
+ struct sh_mobile_meram_info *mdev;
+ cfg = ch->cfg.meram_cfg;
+ mdev = priv->meram_dev;
+ mdev->ops->meram_unregister(mdev, cfg);
+ ch->meram_enabled = 0;
+ }
+
}
/* stop the lcdc */
return PTR_ERR(priv->dot_clk);
}
}
- atomic_set(&priv->hw_usecnt, -1);
/* Runtime PM support involves two step for this driver:
* 1) Enable Runtime PM
struct sh_mobile_lcdc_priv *priv = ch->lcdc;
unsigned long ldrcntr;
unsigned long new_pan_offset;
+ unsigned long base_addr_y, base_addr_c;
+ unsigned long c_offset;
- new_pan_offset = (var->yoffset * info->fix.line_length) +
- (var->xoffset * (info->var.bits_per_pixel / 8));
+ if (!var->nonstd)
+ new_pan_offset = (var->yoffset * info->fix.line_length) +
+ (var->xoffset * (info->var.bits_per_pixel / 8));
+ else
+ new_pan_offset = (var->yoffset * info->fix.line_length) +
+ (var->xoffset);
if (new_pan_offset == ch->pan_offset)
return 0; /* No change, do nothing */
ldrcntr = lcdc_read(priv, _LDRCNTR);
/* Set the source address for the next refresh */
- lcdc_write_chan_mirror(ch, LDSA1R, ch->dma_handle + new_pan_offset);
+ base_addr_y = ch->dma_handle + new_pan_offset;
+ if (var->nonstd) {
+ /* Set y offset */
+ c_offset = (var->yoffset *
+ info->fix.line_length *
+ (info->var.bits_per_pixel - 8)) / 8;
+ base_addr_c = ch->dma_handle + var->xres * var->yres_virtual +
+ c_offset;
+ /* Set x offset */
+ if (info->var.bits_per_pixel == 24)
+ base_addr_c += 2 * var->xoffset;
+ else
+ base_addr_c += var->xoffset;
+ } else
+ base_addr_c = 0;
+
+ if (!ch->meram_enabled) {
+ lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
+ if (base_addr_c)
+ lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
+ } else {
+ struct sh_mobile_meram_cfg *cfg;
+ struct sh_mobile_meram_info *mdev;
+ unsigned long icb_addr_y, icb_addr_c;
+ int ret;
+
+ cfg = ch->cfg.meram_cfg;
+ mdev = priv->meram_dev;
+ ret = mdev->ops->meram_update(mdev, cfg,
+ base_addr_y, base_addr_c,
+ &icb_addr_y, &icb_addr_c);
+ if (ret)
+ return ret;
+
+ lcdc_write_chan_mirror(ch, LDSA1R, icb_addr_y);
+ if (icb_addr_c)
+ lcdc_write_chan_mirror(ch, LDSA2R, icb_addr_c);
+
+ }
+
if (lcdc_chan_is_sublcd(ch))
lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
else
return retval;
}
+static void sh_mobile_fb_reconfig(struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct fb_videomode mode1, mode2;
+ struct fb_event event;
+ int evnt = FB_EVENT_MODE_CHANGE_ALL;
+
+ if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par))
+ /* More framebuffer users are active */
+ return;
+
+ fb_var_to_videomode(&mode1, &ch->display_var);
+ fb_var_to_videomode(&mode2, &info->var);
+
+ if (fb_mode_is_equal(&mode1, &mode2))
+ return;
+
+ /* Display has been re-plugged, framebuffer is free now, reconfigure */
+ if (fb_set_var(info, &ch->display_var) < 0)
+ /* Couldn't reconfigure, hopefully, can continue as before */
+ return;
+
+ if (info->var.nonstd)
+ info->fix.line_length = mode1.xres;
+ else
+ info->fix.line_length = mode1.xres * (ch->cfg.bpp / 8);
+
+ /*
+ * fb_set_var() calls the notifier change internally, only if
+ * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a
+ * user event, we have to call the chain ourselves.
+ */
+ event.info = info;
+ event.data = &mode1;
+ fb_notifier_call_chain(evnt, &event);
+}
+
+/*
+ * Locking: both .fb_release() and .fb_open() are called with info->lock held if
+ * user == 1, or with console sem held, if user == 0.
+ */
+static int sh_mobile_release(struct fb_info *info, int user)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+
+ mutex_lock(&ch->open_lock);
+ dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
+
+ ch->use_count--;
+
+ /* Nothing to reconfigure, when called from fbcon */
+ if (user) {
+ console_lock();
+ sh_mobile_fb_reconfig(info);
+ console_unlock();
+ }
+
+ mutex_unlock(&ch->open_lock);
+
+ return 0;
+}
+
+static int sh_mobile_open(struct fb_info *info, int user)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+
+ mutex_lock(&ch->open_lock);
+ ch->use_count++;
+
+ dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
+ mutex_unlock(&ch->open_lock);
+
+ return 0;
+}
+
+static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_priv *p = ch->lcdc;
+
+ if (var->xres > MAX_XRES || var->yres > MAX_YRES ||
+ var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) {
+ dev_warn(info->dev, "Invalid info: %u-%u-%u-%u x %u-%u-%u-%u @ %lukHz!\n",
+ var->left_margin, var->xres, var->right_margin, var->hsync_len,
+ var->upper_margin, var->yres, var->lower_margin, var->vsync_len,
+ PICOS2KHZ(var->pixclock));
+ return -EINVAL;
+ }
+
+ /* only accept the forced_bpp for dual channel configurations */
+ if (p->forced_bpp && p->forced_bpp != var->bits_per_pixel)
+ return -EINVAL;
+
+ switch (var->bits_per_pixel) {
+ case 16: /* PKF[4:0] = 00011 - RGB 565 */
+ case 24: /* PKF[4:0] = 01011 - RGB 888 */
+ case 32: /* PKF[4:0] = 00000 - RGBA 888 */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * Screen blanking. Behavior is as follows:
+ * FB_BLANK_UNBLANK: screen unblanked, clocks enabled
+ * FB_BLANK_NORMAL: screen blanked, clocks enabled
+ * FB_BLANK_VSYNC,
+ * FB_BLANK_HSYNC,
+ * FB_BLANK_POWEROFF: screen blanked, clocks disabled
+ */
+static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
+{
+ struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_priv *p = ch->lcdc;
+
+ /* blank the screen? */
+ if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) {
+ struct fb_fillrect rect = {
+ .width = info->var.xres,
+ .height = info->var.yres,
+ };
+ sh_mobile_lcdc_fillrect(info, &rect);
+ }
+ /* turn clocks on? */
+ if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) {
+ sh_mobile_lcdc_clk_on(p);
+ }
+ /* turn clocks off? */
+ if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) {
+ /* make sure the screen is updated with the black fill before
+ * switching the clocks off. one vsync is not enough since
+ * blanking may occur in the middle of a refresh. deferred io
+ * mode will reenable the clocks and update the screen in time,
+ * so it does not need this. */
+ if (!info->fbdefio) {
+ sh_mobile_wait_for_vsync(info);
+ sh_mobile_wait_for_vsync(info);
+ }
+ sh_mobile_lcdc_clk_off(p);
+ }
+
+ ch->blank_status = blank;
+ return 0;
+}
static struct fb_ops sh_mobile_lcdc_ops = {
.owner = THIS_MODULE,
.fb_fillrect = sh_mobile_lcdc_fillrect,
.fb_copyarea = sh_mobile_lcdc_copyarea,
.fb_imageblit = sh_mobile_lcdc_imageblit,
+ .fb_blank = sh_mobile_lcdc_blank,
.fb_pan_display = sh_mobile_fb_pan_display,
.fb_ioctl = sh_mobile_ioctl,
+ .fb_open = sh_mobile_open,
+ .fb_release = sh_mobile_release,
+ .fb_check_var = sh_mobile_check_var,
};
-static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp)
+static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
+{
+ struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
+ struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg;
+ int brightness = bdev->props.brightness;
+
+ if (bdev->props.power != FB_BLANK_UNBLANK ||
+ bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ return cfg->set_brightness(cfg->board_data, brightness);
+}
+
+static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
+{
+ struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
+ struct sh_mobile_lcdc_board_cfg *cfg = &ch->cfg.board_cfg;
+
+ return cfg->get_brightness(cfg->board_data);
+}
+
+static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
+ struct fb_info *info)
{
+ return (info->bl_dev == bdev);
+}
+
+static struct backlight_ops sh_mobile_lcdc_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = sh_mobile_lcdc_update_bl,
+ .get_brightness = sh_mobile_lcdc_get_brightness,
+ .check_fb = sh_mobile_lcdc_check_fb,
+};
+
+static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
+ struct sh_mobile_lcdc_chan *ch)
+{
+ struct backlight_device *bl;
+
+ bl = backlight_device_register(ch->cfg.bl_info.name, parent, ch,
+ &sh_mobile_lcdc_bl_ops, NULL);
+ if (IS_ERR(bl)) {
+ dev_err(parent, "unable to register backlight device: %ld\n",
+ PTR_ERR(bl));
+ return NULL;
+ }
+
+ bl->props.max_brightness = ch->cfg.bl_info.max_brightness;
+ bl->props.brightness = bl->props.max_brightness;
+ backlight_update_status(bl);
+
+ return bl;
+}
+
+static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev)
+{
+ backlight_device_unregister(bdev);
+}
+
+static int sh_mobile_lcdc_set_bpp(struct fb_var_screeninfo *var, int bpp,
+ int nonstd)
+{
+ if (nonstd) {
+ switch (bpp) {
+ case 12:
+ case 16:
+ case 24:
+ var->bits_per_pixel = bpp;
+ var->nonstd = nonstd;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ }
+
switch (bpp) {
case 16: /* PKF[4:0] = 00011 - RGB 565 */
var->red.offset = 11;
var->transp.length = 0;
break;
- case 32: /* PKF[4:0] = 00000 - RGB 888
- * sh7722 pdf says 00RRGGBB but reality is GGBB00RR
- * this may be because LDDDSR has word swap enabled..
- */
- var->red.offset = 0;
+ case 24: /* PKF[4:0] = 01011 - RGB 888 */
+ var->red.offset = 16;
var->red.length = 8;
- var->green.offset = 24;
+ var->green.offset = 8;
var->green.length = 8;
- var->blue.offset = 16;
+ var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
+
+ case 32: /* PKF[4:0] = 00000 - RGBA 888 */
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ break;
default:
return -EINVAL;
}
.runtime_resume = sh_mobile_lcdc_runtime_resume,
};
+/* locking: called with info->lock held */
static int sh_mobile_lcdc_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct fb_info *info = event->info;
struct sh_mobile_lcdc_chan *ch = info->par;
struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
- struct fb_var_screeninfo *var;
if (&ch->lcdc->notifier != nb)
- return 0;
+ return NOTIFY_DONE;
dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
__func__, action, event->data);
switch(action) {
case FB_EVENT_SUSPEND:
- if (board_cfg->display_off)
+ if (board_cfg->display_off && try_module_get(board_cfg->owner)) {
board_cfg->display_off(board_cfg->board_data);
- pm_runtime_put(info->device);
+ module_put(board_cfg->owner);
+ }
+ sh_mobile_lcdc_stop(ch->lcdc);
break;
case FB_EVENT_RESUME:
- var = &info->var;
+ mutex_lock(&ch->open_lock);
+ sh_mobile_fb_reconfig(info);
+ mutex_unlock(&ch->open_lock);
/* HDMI must be enabled before LCDC configuration */
- if (board_cfg->display_on)
- board_cfg->display_on(board_cfg->board_data, ch->info);
-
- /* Check if the new display is not in our modelist */
- if (ch->info->modelist.next &&
- !fb_match_mode(var, &ch->info->modelist)) {
- struct fb_videomode mode;
- int ret;
-
- /* Can we handle this display? */
- if (var->xres > ch->cfg.lcd_cfg.xres ||
- var->yres > ch->cfg.lcd_cfg.yres)
- return -ENOMEM;
-
- /* Add to the modelist */
- fb_var_to_videomode(&mode, var);
- ret = fb_add_videomode(&mode, &ch->info->modelist);
- if (ret < 0)
- return ret;
+ if (board_cfg->display_on && try_module_get(board_cfg->owner)) {
+ board_cfg->display_on(board_cfg->board_data, info);
+ module_put(board_cfg->owner);
}
- pm_runtime_get_sync(info->device);
-
- sh_mobile_lcdc_geometry(ch);
-
- break;
+ sh_mobile_lcdc_start(ch->lcdc);
}
- return 0;
+ return NOTIFY_OK;
}
static int sh_mobile_lcdc_remove(struct platform_device *pdev);
{
struct fb_info *info;
struct sh_mobile_lcdc_priv *priv;
- struct sh_mobile_lcdc_info *pdata;
- struct sh_mobile_lcdc_chan_cfg *cfg;
+ struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
struct resource *res;
int error;
void *buf;
int i, j;
- if (!pdev->dev.platform_data) {
+ if (!pdata) {
dev_err(&pdev->dev, "no platform data defined\n");
return -EINVAL;
}
}
priv->irq = i;
- pdata = pdev->dev.platform_data;
+ atomic_set(&priv->hw_usecnt, -1);
j = 0;
for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) {
- priv->ch[j].lcdc = priv;
- memcpy(&priv->ch[j].cfg, &pdata->ch[i], sizeof(pdata->ch[i]));
+ struct sh_mobile_lcdc_chan *ch = priv->ch + j;
+
+ ch->lcdc = priv;
+ memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i]));
- error = sh_mobile_lcdc_check_interface(&priv->ch[j]);
+ error = sh_mobile_lcdc_check_interface(ch);
if (error) {
dev_err(&pdev->dev, "unsupported interface type\n");
goto err1;
}
- init_waitqueue_head(&priv->ch[j].frame_end_wait);
- init_completion(&priv->ch[j].vsync_completion);
- priv->ch[j].pan_offset = 0;
+ init_waitqueue_head(&ch->frame_end_wait);
+ init_completion(&ch->vsync_completion);
+ ch->pan_offset = 0;
+
+ /* probe the backlight is there is one defined */
+ if (ch->cfg.bl_info.max_brightness)
+ ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch);
switch (pdata->ch[i].chan) {
case LCDC_CHAN_MAINLCD:
- priv->ch[j].enabled = 1 << 1;
- priv->ch[j].reg_offs = lcdc_offs_mainlcd;
+ ch->enabled = 1 << 1;
+ ch->reg_offs = lcdc_offs_mainlcd;
j++;
break;
case LCDC_CHAN_SUBLCD:
- priv->ch[j].enabled = 1 << 2;
- priv->ch[j].reg_offs = lcdc_offs_sublcd;
+ ch->enabled = 1 << 2;
+ ch->reg_offs = lcdc_offs_sublcd;
j++;
break;
}
goto err1;
}
+ /* for dual channel LCDC (MAIN + SUB) force shared bpp setting */
+ if (j == 2)
+ priv->forced_bpp = pdata->ch[0].bpp;
+
priv->base = ioremap_nocache(res->start, resource_size(res));
if (!priv->base)
goto err1;
goto err1;
}
+ priv->meram_dev = pdata->meram_dev;
+
for (i = 0; i < j; i++) {
struct fb_var_screeninfo *var;
- struct fb_videomode *lcd_cfg;
- cfg = &priv->ch[i].cfg;
-
- priv->ch[i].info = framebuffer_alloc(0, &pdev->dev);
- if (!priv->ch[i].info) {
+ const struct fb_videomode *lcd_cfg, *max_cfg = NULL;
+ struct sh_mobile_lcdc_chan *ch = priv->ch + i;
+ struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg;
+ const struct fb_videomode *mode = cfg->lcd_cfg;
+ unsigned long max_size = 0;
+ int k;
+ int num_cfg;
+
+ ch->info = framebuffer_alloc(0, &pdev->dev);
+ if (!ch->info) {
dev_err(&pdev->dev, "unable to allocate fb_info\n");
error = -ENOMEM;
break;
}
- info = priv->ch[i].info;
+ info = ch->info;
var = &info->var;
- lcd_cfg = &cfg->lcd_cfg;
info->fbops = &sh_mobile_lcdc_ops;
- var->xres = var->xres_virtual = lcd_cfg->xres;
- var->yres = lcd_cfg->yres;
- /* Default Y virtual resolution is 2x panel size */
- var->yres_virtual = var->yres * 2;
+ info->par = ch;
+
+ mutex_init(&ch->open_lock);
+
+ for (k = 0, lcd_cfg = mode;
+ k < cfg->num_cfg && lcd_cfg;
+ k++, lcd_cfg++) {
+ unsigned long size = lcd_cfg->yres * lcd_cfg->xres;
+ /* NV12 buffers must have even number of lines */
+ if ((cfg->nonstd) && cfg->bpp == 12 &&
+ (lcd_cfg->yres & 0x1)) {
+ dev_err(&pdev->dev, "yres must be multiple of 2"
+ " for YCbCr420 mode.\n");
+ error = -EINVAL;
+ goto err1;
+ }
+
+ if (size > max_size) {
+ max_cfg = lcd_cfg;
+ max_size = size;
+ }
+ }
+
+ if (!mode)
+ max_size = MAX_XRES * MAX_YRES;
+ else if (max_cfg)
+ dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n",
+ max_cfg->xres, max_cfg->yres);
+
+ info->fix = sh_mobile_lcdc_fix;
+ info->fix.smem_len = max_size * 2 * cfg->bpp / 8;
+
+ /* Only pan in 2 line steps for NV12 */
+ if (cfg->nonstd && cfg->bpp == 12)
+ info->fix.ypanstep = 2;
+
+ if (!mode) {
+ mode = &default_720p;
+ num_cfg = 1;
+ } else {
+ num_cfg = cfg->num_cfg;
+ }
+
+ fb_videomode_to_modelist(mode, num_cfg, &info->modelist);
+
+ fb_videomode_to_var(var, mode);
var->width = cfg->lcd_size_cfg.width;
var->height = cfg->lcd_size_cfg.height;
+ /* Default Y virtual resolution is 2x panel size */
+ var->yres_virtual = var->yres * 2;
var->activate = FB_ACTIVATE_NOW;
- var->left_margin = lcd_cfg->left_margin;
- var->right_margin = lcd_cfg->right_margin;
- var->upper_margin = lcd_cfg->upper_margin;
- var->lower_margin = lcd_cfg->lower_margin;
- var->hsync_len = lcd_cfg->hsync_len;
- var->vsync_len = lcd_cfg->vsync_len;
- var->sync = lcd_cfg->sync;
- var->pixclock = lcd_cfg->pixclock;
-
- error = sh_mobile_lcdc_set_bpp(var, cfg->bpp);
+
+ error = sh_mobile_lcdc_set_bpp(var, cfg->bpp, cfg->nonstd);
if (error)
break;
- info->fix = sh_mobile_lcdc_fix;
- info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8);
- info->fix.smem_len = info->fix.line_length *
- var->yres_virtual;
-
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
- &priv->ch[i].dma_handle, GFP_KERNEL);
+ &ch->dma_handle, GFP_KERNEL);
if (!buf) {
dev_err(&pdev->dev, "unable to allocate buffer\n");
error = -ENOMEM;
break;
}
- info->pseudo_palette = &priv->ch[i].pseudo_palette;
+ info->pseudo_palette = &ch->pseudo_palette;
info->flags = FBINFO_FLAG_DEFAULT;
error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
if (error < 0) {
dev_err(&pdev->dev, "unable to allocate cmap\n");
dma_free_coherent(&pdev->dev, info->fix.smem_len,
- buf, priv->ch[i].dma_handle);
+ buf, ch->dma_handle);
break;
}
- memset(buf, 0, info->fix.smem_len);
- info->fix.smem_start = priv->ch[i].dma_handle;
+ info->fix.smem_start = ch->dma_handle;
+ if (var->nonstd)
+ info->fix.line_length = var->xres;
+ else
+ info->fix.line_length = var->xres * (cfg->bpp / 8);
+
info->screen_base = buf;
info->device = &pdev->dev;
- info->par = &priv->ch[i];
+ ch->display_var = *var;
}
if (error)
}
}
+ info->bl_dev = ch->bl;
+
error = register_framebuffer(info);
if (error < 0)
goto err1;
pdev->name,
(ch->cfg.chan == LCDC_CHAN_MAINLCD) ?
"mainlcd" : "sublcd",
- (int) ch->cfg.lcd_cfg.xres,
- (int) ch->cfg.lcd_cfg.yres,
+ info->var.xres, info->var.yres,
ch->cfg.bpp);
/* deferred io mode: disable clock to save power */
if (priv->ch[i].sglist)
vfree(priv->ch[i].sglist);
- dma_free_coherent(&pdev->dev, info->fix.smem_len,
- info->screen_base, priv->ch[i].dma_handle);
+ if (info->screen_base)
+ dma_free_coherent(&pdev->dev, info->fix.smem_len,
+ info->screen_base,
+ priv->ch[i].dma_handle);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
+ for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
+ if (priv->ch[i].bl)
+ sh_mobile_lcdc_bl_remove(priv->ch[i].bl);
+ }
+
if (priv->dot_clk)
clk_put(priv->dot_clk);
projects / firefly-linux-kernel-4.4.55.git / blobdiff