mirror of https://gitee.com/openkylin/linux.git
fbdev: sh_mobile_lcdc: Split channel initialization from probe function
Move channel initialization to sh_mobile_lcdc_channel_init() and call the function from sh_mobile_lcdc_probe(). This makes the code more readable and prepares it for fix/var initialization rework. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Laurent Pinchart
Florian Tobias Schandinat
parent
b4bee692e5
commit
3ce0559990
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@ -1485,15 +1485,129 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
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return 0;
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}
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static int __devinit sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch,
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struct device *dev)
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{
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struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg;
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const struct fb_videomode *max_mode;
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const struct fb_videomode *mode;
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struct fb_var_screeninfo *var;
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struct fb_info *info;
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unsigned int max_size;
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int num_cfg;
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void *buf;
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int ret;
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int i;
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ch->info = framebuffer_alloc(0, dev);
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if (!ch->info) {
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dev_err(dev, "unable to allocate fb_info\n");
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return -ENOMEM;
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}
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info = ch->info;
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var = &info->var;
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info->fbops = &sh_mobile_lcdc_ops;
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info->par = ch;
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mutex_init(&ch->open_lock);
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/* Iterate through the modes to validate them and find the highest
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* resolution.
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*/
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max_mode = NULL;
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max_size = 0;
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for (i = 0, mode = cfg->lcd_cfg; i < cfg->num_cfg; i++, mode++) {
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unsigned int size = mode->yres * mode->xres;
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/* NV12 buffers must have even number of lines */
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if ((cfg->nonstd) && cfg->bpp == 12 &&
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(mode->yres & 0x1)) {
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dev_err(dev, "yres must be multiple of 2 for YCbCr420 "
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"mode.\n");
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return -EINVAL;
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}
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if (size > max_size) {
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max_mode = mode;
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max_size = size;
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}
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}
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if (!max_size)
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max_size = MAX_XRES * MAX_YRES;
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else
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dev_dbg(dev, "Found largest videomode %ux%u\n",
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max_mode->xres, max_mode->yres);
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info->fix = sh_mobile_lcdc_fix;
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info->fix.smem_len = max_size * 2 * cfg->bpp / 8;
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/* Only pan in 2 line steps for NV12 */
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if (cfg->nonstd && cfg->bpp == 12)
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info->fix.ypanstep = 2;
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if (cfg->lcd_cfg == NULL) {
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mode = &default_720p;
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num_cfg = 1;
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} else {
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mode = cfg->lcd_cfg;
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num_cfg = cfg->num_cfg;
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}
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fb_videomode_to_modelist(mode, num_cfg, &info->modelist);
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fb_videomode_to_var(var, mode);
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var->width = cfg->lcd_size_cfg.width;
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var->height = cfg->lcd_size_cfg.height;
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/* Default Y virtual resolution is 2x panel size */
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var->yres_virtual = var->yres * 2;
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var->activate = FB_ACTIVATE_NOW;
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ret = sh_mobile_lcdc_set_bpp(var, cfg->bpp, cfg->nonstd);
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if (ret)
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return ret;
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buf = dma_alloc_coherent(dev, info->fix.smem_len, &ch->dma_handle,
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GFP_KERNEL);
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if (!buf) {
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dev_err(dev, "unable to allocate buffer\n");
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return -ENOMEM;
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}
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info->pseudo_palette = &ch->pseudo_palette;
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info->flags = FBINFO_FLAG_DEFAULT;
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ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
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if (ret < 0) {
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dev_err(dev, "unable to allocate cmap\n");
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dma_free_coherent(dev, info->fix.smem_len,
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buf, ch->dma_handle);
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return ret;
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}
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info->fix.smem_start = ch->dma_handle;
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if (var->nonstd)
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info->fix.line_length = var->xres;
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else
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info->fix.line_length = var->xres * (cfg->bpp / 8);
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info->screen_base = buf;
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info->device = dev;
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ch->display_var = *var;
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return 0;
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}
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static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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{
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struct fb_info *info;
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struct sh_mobile_lcdc_priv *priv;
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struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
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struct sh_mobile_lcdc_priv *priv;
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struct resource *res;
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int num_channels;
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int error;
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void *buf;
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int i, j;
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int i;
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if (!pdata) {
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dev_err(&pdev->dev, "no platform data defined\n");
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@ -1525,9 +1639,8 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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priv->irq = i;
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atomic_set(&priv->hw_usecnt, -1);
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j = 0;
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for (i = 0; i < ARRAY_SIZE(pdata->ch); i++) {
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struct sh_mobile_lcdc_chan *ch = priv->ch + j;
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for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) {
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struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels;
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ch->lcdc = priv;
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memcpy(&ch->cfg, &pdata->ch[i], sizeof(pdata->ch[i]));
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@ -1549,24 +1662,24 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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case LCDC_CHAN_MAINLCD:
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ch->enabled = LDCNT2R_ME;
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ch->reg_offs = lcdc_offs_mainlcd;
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j++;
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num_channels++;
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break;
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case LCDC_CHAN_SUBLCD:
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ch->enabled = LDCNT2R_SE;
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ch->reg_offs = lcdc_offs_sublcd;
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j++;
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num_channels++;
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break;
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}
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}
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if (!j) {
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if (!num_channels) {
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dev_err(&pdev->dev, "no channels defined\n");
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error = -EINVAL;
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goto err1;
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}
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/* for dual channel LCDC (MAIN + SUB) force shared bpp setting */
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if (j == 2)
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if (num_channels == 2)
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priv->forced_bpp = pdata->ch[0].bpp;
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priv->base = ioremap_nocache(res->start, resource_size(res));
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@ -1581,125 +1694,23 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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priv->meram_dev = pdata->meram_dev;
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for (i = 0; i < j; i++) {
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struct fb_var_screeninfo *var;
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const struct fb_videomode *lcd_cfg, *max_cfg = NULL;
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for (i = 0; i < num_channels; i++) {
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struct sh_mobile_lcdc_chan *ch = priv->ch + i;
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struct sh_mobile_lcdc_chan_cfg *cfg = &ch->cfg;
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const struct fb_videomode *mode = cfg->lcd_cfg;
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unsigned long max_size = 0;
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int k;
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int num_cfg;
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ch->info = framebuffer_alloc(0, &pdev->dev);
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if (!ch->info) {
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dev_err(&pdev->dev, "unable to allocate fb_info\n");
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error = -ENOMEM;
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break;
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}
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info = ch->info;
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var = &info->var;
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info->fbops = &sh_mobile_lcdc_ops;
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info->par = ch;
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mutex_init(&ch->open_lock);
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for (k = 0, lcd_cfg = mode;
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k < cfg->num_cfg && lcd_cfg;
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k++, lcd_cfg++) {
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unsigned long size = lcd_cfg->yres * lcd_cfg->xres;
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/* NV12 buffers must have even number of lines */
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if ((cfg->nonstd) && cfg->bpp == 12 &&
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(lcd_cfg->yres & 0x1)) {
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dev_err(&pdev->dev, "yres must be multiple of 2"
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" for YCbCr420 mode.\n");
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error = -EINVAL;
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goto err1;
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}
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if (size > max_size) {
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max_cfg = lcd_cfg;
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max_size = size;
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}
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}
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if (!mode)
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max_size = MAX_XRES * MAX_YRES;
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else if (max_cfg)
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dev_dbg(&pdev->dev, "Found largest videomode %ux%u\n",
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max_cfg->xres, max_cfg->yres);
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info->fix = sh_mobile_lcdc_fix;
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info->fix.smem_len = max_size * 2 * cfg->bpp / 8;
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/* Only pan in 2 line steps for NV12 */
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if (cfg->nonstd && cfg->bpp == 12)
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info->fix.ypanstep = 2;
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if (!mode) {
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mode = &default_720p;
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num_cfg = 1;
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} else {
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num_cfg = cfg->num_cfg;
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}
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fb_videomode_to_modelist(mode, num_cfg, &info->modelist);
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fb_videomode_to_var(var, mode);
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var->width = cfg->lcd_size_cfg.width;
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var->height = cfg->lcd_size_cfg.height;
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/* Default Y virtual resolution is 2x panel size */
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var->yres_virtual = var->yres * 2;
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var->activate = FB_ACTIVATE_NOW;
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error = sh_mobile_lcdc_set_bpp(var, cfg->bpp, cfg->nonstd);
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error = sh_mobile_lcdc_channel_init(ch, &pdev->dev);
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if (error)
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break;
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buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
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&ch->dma_handle, GFP_KERNEL);
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if (!buf) {
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dev_err(&pdev->dev, "unable to allocate buffer\n");
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error = -ENOMEM;
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break;
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}
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info->pseudo_palette = &ch->pseudo_palette;
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info->flags = FBINFO_FLAG_DEFAULT;
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error = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
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if (error < 0) {
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dev_err(&pdev->dev, "unable to allocate cmap\n");
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dma_free_coherent(&pdev->dev, info->fix.smem_len,
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buf, ch->dma_handle);
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break;
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}
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info->fix.smem_start = ch->dma_handle;
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if (var->nonstd)
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info->fix.line_length = var->xres;
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else
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info->fix.line_length = var->xres * (cfg->bpp / 8);
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info->screen_base = buf;
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info->device = &pdev->dev;
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ch->display_var = *var;
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goto err1;
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}
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if (error)
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goto err1;
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error = sh_mobile_lcdc_start(priv);
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if (error) {
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dev_err(&pdev->dev, "unable to start hardware\n");
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goto err1;
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}
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for (i = 0; i < j; i++) {
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for (i = 0; i < num_channels; i++) {
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struct sh_mobile_lcdc_chan *ch = priv->ch + i;
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info = ch->info;
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struct fb_info *info = ch->info;
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if (info->fbdefio) {
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ch->sglist = vmalloc(sizeof(struct scatterlist) *
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