#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 <video/sh_mobile_lcdc.h>
#include <asm/atomic.h>
-#define PALETTE_NR 16
+#include "sh_mobile_lcdcfb.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 DEFAULT_XRES 1280
+#define DEFAULT_YRES 1024
static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
[LDDCKPAT1R] = 0x400,
#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 = 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 {
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;
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;
/* set bpp format in PKF[4:0] */
tmp = lcdc_read_chan(ch, LDDFR);
- tmp &= ~(0x0001001f);
+ tmp &= ~0x0001001f;
tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0;
lcdc_write_chan(ch, LDDFR, tmp);
continue;
board_cfg = &ch->cfg.board_cfg;
- if (board_cfg->display_on)
+ if (try_module_get(board_cfg->owner) && board_cfg->display_on) {
board_cfg->display_on(board_cfg->board_data, ch->info);
+ module_put(board_cfg->owner);
+ }
}
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);
}
board_cfg = &ch->cfg.board_cfg;
- if (board_cfg->display_off)
+ if (try_module_get(board_cfg->owner) && board_cfg->display_off) {
board_cfg->display_off(board_cfg->board_data);
+ module_put(board_cfg->owner);
+ }
}
/* 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
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_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)
.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;
+ int ret;
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 (try_module_get(board_cfg->owner) && board_cfg->display_off) {
board_cfg->display_off(board_cfg->board_data);
+ 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 (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 (try_module_get(board_cfg->owner) && board_cfg->display_on) {
+ 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;
+ ret = sh_mobile_lcdc_start(ch->lcdc);
+ if (!ret)
+ pm_runtime_get_sync(info->device);
}
- 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;
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;
}
for (i = 0; i < j; i++) {
struct fb_var_screeninfo *var;
- struct fb_videomode *lcd_cfg;
- cfg = &priv->ch[i].cfg;
+ 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;
- priv->ch[i].info = framebuffer_alloc(0, &pdev->dev);
- if (!priv->ch[i].info) {
+ 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;
+ 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;
+
+ if (size > max_size) {
+ max_cfg = lcd_cfg;
+ max_size = size;
+ }
+ }
+
+ 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.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->width = cfg->lcd_size_cfg.width;
- var->height = cfg->lcd_size_cfg.height;
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);
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;
+ 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)
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.xres,
- (int) ch->cfg.lcd_cfg.yres,
+ info->var.xres, info->var.yres,
ch->cfg.bpp);
/* deferred io mode: disable clock to save power */
git.openpandora.org / pandora-kernel.git / blobdiff