static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
{
struct fb_info *info;
struct sh_mobile_lcdc_priv *priv;
struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
struct resource *res;
int error;
void *buf;
int i, j;
if (!pdata) {
dev_err(&pdev->dev, "no platform data defined\n");
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
i = platform_get_irq(pdev, 0);
if (!res || i < 0) {
dev_err(&pdev->dev, "cannot get platform resources\n");
return -ENOENT;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "cannot allocate device data\n");
return -ENOMEM;
}
platform_set_drvdata(pdev, priv);
error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED,
dev_name(&pdev->dev), priv);
if (error) {
dev_err(&pdev->dev, "unable to request irq\n");
goto err1;
}
priv->irq = i;
atomic_set(&priv->hw_usecnt, -1);
j = 0;
for (i = 0; i < ARRAY_SIZE(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(ch);
if (error) {
dev_err(&pdev->dev, "unsupported interface type\n");
goto err1;
}
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:
ch->enabled = 1 << 1;
ch->reg_offs = lcdc_offs_mainlcd;
j++;
break;
case LCDC_CHAN_SUBLCD:
ch->enabled = 1 << 2;
ch->reg_offs = lcdc_offs_sublcd;
j++;
break;
}
}
if (!j) {
dev_err(&pdev->dev, "no channels defined\n");
error = -EINVAL;
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;
error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv);
if (error) {
dev_err(&pdev->dev, "unable to setup clocks\n");
goto err1;
}
priv->meram_dev = pdata->meram_dev;
for (i = 0; i < j; i++) {
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;
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 = ch->info;
var = &info->var;
info->fbops = &sh_mobile_lcdc_ops;
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;
error = sh_mobile_lcdc_set_bpp(var, cfg->bpp, cfg->nonstd);
if (error)
break;
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
&ch->dma_handle, GFP_KERNEL);
if (!buf) {
dev_err(&pdev->dev, "unable to allocate buffer\n");
error = -ENOMEM;
break;
}
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, ch->dma_handle);
break;
}
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;
ch->display_var = *var;
}
if (error)
goto err1;
error = sh_mobile_lcdc_start(priv);
if (error) {
dev_err(&pdev->dev, "unable to start hardware\n");
goto err1;
}
for (i = 0; i < j; i++) {
struct sh_mobile_lcdc_chan *ch = priv->ch + i;
info = ch->info;
if (info->fbdefio) {
ch->sglist = vmalloc(sizeof(struct scatterlist) *
info->fix.smem_len >> PAGE_SHIFT);
if (!ch->sglist) {
dev_err(&pdev->dev, "cannot allocate sglist\n");
goto err1;
}
}
info->bl_dev = ch->bl;
error = register_framebuffer(info);
if (error < 0)
goto err1;
dev_info(info->dev,
"registered %s/%s as %dx%d %dbpp.\n",
pdev->name,
(ch->cfg.chan == LCDC_CHAN_MAINLCD) ?
"mainlcd" : "sublcd",
info->var.xres, info->var.yres,
ch->cfg.bpp);
/* deferred io mode: disable clock to save power */
if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
sh_mobile_lcdc_clk_off(priv);
}
static int __init sh_mobile_lcdc_probe(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 resource *res;
int error;
void *buf;
int i, j;
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "no platform data defined\n");
error = -EINVAL;
goto err0;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
i = platform_get_irq(pdev, 0);
if (!res || i < 0) {
dev_err(&pdev->dev, "cannot get platform resources\n");
error = -ENOENT;
goto err0;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "cannot allocate device data\n");
error = -ENOMEM;
goto err0;
}
error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED,
dev_name(&pdev->dev), priv);
if (error) {
dev_err(&pdev->dev, "unable to request irq\n");
goto err1;
}
priv->irq = i;
priv->dev = &pdev->dev;
platform_set_drvdata(pdev, priv);
pdata = pdev->dev.platform_data;
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]));
error = sh_mobile_lcdc_check_interface(&priv->ch[i]);
if (error) {
dev_err(&pdev->dev, "unsupported interface type\n");
goto err1;
}
init_waitqueue_head(&priv->ch[i].frame_end_wait);
priv->ch[j].pan_offset = 0;
priv->ch[j].new_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;
j++;
break;
case LCDC_CHAN_SUBLCD:
priv->ch[j].enabled = 1 << 2;
priv->ch[j].reg_offs = lcdc_offs_sublcd;
j++;
break;
}
}
if (!j) {
dev_err(&pdev->dev, "no channels defined\n");
error = -EINVAL;
goto err1;
}
error = sh_mobile_lcdc_setup_clocks(pdev, pdata->clock_source, priv);
if (error) {
dev_err(&pdev->dev, "unable to setup clocks\n");
goto err1;
}
priv->base = ioremap_nocache(res->start, (res->end - res->start) + 1);
for (i = 0; i < j; i++) {
cfg = &priv->ch[i].cfg;
priv->ch[i].info = framebuffer_alloc(0, &pdev->dev);
if (!priv->ch[i].info) {
dev_err(&pdev->dev, "unable to allocate fb_info\n");
error = -ENOMEM;
break;
}
info = priv->ch[i].info;
info->fbops = &sh_mobile_lcdc_ops;
info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres;
info->var.yres = cfg->lcd_cfg.yres;
info->var.yres_virtual = info->var.yres * 2;
info->var.width = cfg->lcd_size_cfg.width;
info->var.height = cfg->lcd_size_cfg.height;
info->var.activate = FB_ACTIVATE_NOW;
error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp);
if (error)
break;
info->fix = sh_mobile_lcdc_fix;
info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8);
info->fix.smem_len = info->fix.line_length *
info->var.yres_virtual;
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
&priv->ch[i].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->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);
break;
}
memset(buf, 0, info->fix.smem_len);
info->fix.smem_start = priv->ch[i].dma_handle;
info->screen_base = buf;
info->device = &pdev->dev;
info->par = &priv->ch[i];
}
if (error)
goto err1;
error = sh_mobile_lcdc_start(priv);
if (error) {
dev_err(&pdev->dev, "unable to start hardware\n");
goto err1;
}
for (i = 0; i < j; i++) {
struct sh_mobile_lcdc_chan *ch = priv->ch + i;
info = ch->info;
if (info->fbdefio) {
priv->ch->sglist = vmalloc(sizeof(struct scatterlist) *
info->fix.smem_len >> PAGE_SHIFT);
if (!priv->ch->sglist) {
dev_err(&pdev->dev, "cannot allocate sglist\n");
goto err1;
}
}
error = register_framebuffer(info);
if (error < 0)
goto err1;
dev_info(info->dev,
"registered %s/%s as %dx%d %dbpp.\n",
pdev->name,
(ch->cfg.chan == LCDC_CHAN_MAINLCD) ?
"mainlcd" : "sublcd",
(int) ch->cfg.lcd_cfg.xres,
(int) ch->cfg.lcd_cfg.yres,
ch->cfg.bpp);
if (info->fbdefio)
sh_mobile_lcdc_clk_off(priv);
}