#include <linux/vmalloc.h>
#include <linux/ioctl.h>
#include <linux/slab.h>
+#include <linux/console.h>
#include <video/sh_mobile_lcdc.h>
#include <asm/atomic.h>
};
#define NR_SHARED_REGS ARRAY_SIZE(lcdc_shared_regs)
+#define DEFAULT_XRES 1280
+#define DEFAULT_YRES 1024
+
static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
[LDDCKPAT1R] = 0x400,
[LDDCKPAT2R] = 0x404,
#define LDRCNTR_MRC 0x00000001
#define LDSR_MRS 0x00000100
+static const struct fb_videomode default_720p = {
+ .name = "HDMI 720p",
+ .xres = 1280,
+ .yres = 720,
+
+ .left_margin = 200,
+ .right_margin = 88,
+ .hsync_len = 48,
+
+ .upper_margin = 20,
+ .lower_margin = 5,
+ .vsync_len = 5,
+
+ .pixclock = 13468,
+ .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
+};
+
struct sh_mobile_lcdc_priv {
void __iomem *base;
int irq;
m = 1 << 6;
tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
+ /* 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);
}
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;
+
+ info->fix.line_length = mode2.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 = &mode2;
+ 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) {
+ acquire_console_sem();
+ sh_mobile_fb_reconfig(info);
+ release_console_sem();
+ }
+
+ 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;
+
+ if (var->xres < 160 || var->xres > 1920 ||
+ var->yres < 120 || var->yres > 1080 ||
+ var->left_margin < 32 || var->left_margin > 320 ||
+ var->right_margin < 12 || var->right_margin > 240 ||
+ var->upper_margin < 12 || var->upper_margin > 120 ||
+ var->lower_margin < 1 || var->lower_margin > 64 ||
+ var->hsync_len < 32 || var->hsync_len > 240 ||
+ var->vsync_len < 2 || var->vsync_len > 64 ||
+ var->pixclock < 6000 || var->pixclock > 40000 ||
+ var->xres * var->yres * (ch->cfg.bpp / 8) * 2 > info->fix.smem_len) {
+ dev_warn(info->dev, "Invalid info: %u %u %u %u %u %u %u %u %u!\n",
+ var->xres, var->yres,
+ var->left_margin, var->right_margin,
+ var->upper_margin, var->lower_margin,
+ var->hsync_len, var->vsync_len,
+ var->pixclock);
+ return -EINVAL;
+ }
+ return 0;
+}
+
static struct fb_ops sh_mobile_lcdc_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = sh_mobile_lcdc_setcolreg,
.fb_imageblit = sh_mobile_lcdc_imageblit,
.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)
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;
+ int ret;
if (&ch->lcdc->notifier != nb)
return NOTIFY_DONE;
module_put(board_cfg->owner);
}
pm_runtime_put(info->device);
+ 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 (try_module_get(board_cfg->owner) && board_cfg->display_on) {
- board_cfg->display_on(board_cfg->board_data, ch->info);
+ board_cfg->display_on(board_cfg->board_data, info);
module_put(board_cfg->owner);
}
- /* 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[0].xres ||
- var->yres > ch->cfg.lcd_cfg[0].yres)
- /*
- * LCDC resume failed, no need to continue with
- * the notifier chain
- */
- return notifier_from_errno(-ENOMEM);
-
- /* Add to the modelist */
- fb_var_to_videomode(&mode, var);
- ret = fb_add_videomode(&mode, &ch->info->modelist);
- if (ret < 0)
- return notifier_from_errno(ret);
- }
-
- pm_runtime_get_sync(info->device);
-
- sh_mobile_lcdc_geometry(ch);
+ ret = sh_mobile_lcdc_start(ch->lcdc);
+ if (!ret)
+ pm_runtime_get_sync(info->device);
}
return NOTIFY_OK;
struct fb_info *info;
struct sh_mobile_lcdc_priv *priv;
struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
- struct sh_mobile_lcdc_chan_cfg *cfg;
struct resource *res;
int error;
void *buf;
struct fb_var_screeninfo *var;
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;
- cfg = &ch->cfg;
-
ch->info = framebuffer_alloc(0, &pdev->dev);
if (!ch->info) {
dev_err(&pdev->dev, "unable to allocate fb_info\n");
info = ch->info;
var = &info->var;
info->fbops = &sh_mobile_lcdc_ops;
- fb_videomode_to_var(var, &cfg->lcd_cfg[0]);
- /* Default Y virtual resolution is 2x panel size */
- var->yres_virtual = var->yres * 2;
+ info->par = ch;
- error = sh_mobile_lcdc_set_bpp(var, cfg->bpp);
- if (error)
- break;
+ mutex_init(&ch->open_lock);
- for (k = 0, lcd_cfg = cfg->lcd_cfg;
- k < cfg->num_cfg;
+ for (k = 0, lcd_cfg = mode;
+ k < cfg->num_cfg && lcd_cfg;
k++, lcd_cfg++) {
unsigned long size = lcd_cfg->yres * lcd_cfg->xres;
}
}
- dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n",
- max_cfg->xres, max_cfg->yres);
+ if (!mode)
+ max_size = DEFAULT_XRES * DEFAULT_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.line_length = cfg->lcd_cfg[0].xres * (cfg->bpp / 8);
info->fix.smem_len = max_size * (cfg->bpp / 8) * 2;
+ if (!mode)
+ mode = &default_720p;
+
+ fb_videomode_to_var(var, mode);
+ /* Default Y virtual resolution is 2x panel size */
+ var->yres_virtual = var->yres * 2;
+ var->activate = FB_ACTIVATE_NOW;
+
+ error = sh_mobile_lcdc_set_bpp(var, cfg->bpp);
+ if (error)
+ break;
+
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
&ch->dma_handle, GFP_KERNEL);
if (!buf) {
}
info->fix.smem_start = ch->dma_handle;
+ info->fix.line_length = var->xres * (cfg->bpp / 8);
info->screen_base = buf;
info->device = &pdev->dev;
- info->par = ch;
ch->display_var = *var;
}
for (i = 0; i < j; i++) {
struct sh_mobile_lcdc_chan *ch = priv->ch + i;
+ const struct fb_videomode *mode = ch->cfg.lcd_cfg;
+
+ if (!mode)
+ mode = &default_720p;
info = ch->info;
}
}
+ fb_videomode_to_modelist(mode, ch->cfg.num_cfg, &info->modelist);
error = register_framebuffer(info);
if (error < 0)
goto err1;
pdev->name,
(ch->cfg.chan == LCDC_CHAN_MAINLCD) ?
"mainlcd" : "sublcd",
- (int) ch->cfg.lcd_cfg[0].xres,
- (int) ch->cfg.lcd_cfg[0].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);
}
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff