diff options
Diffstat (limited to 'drivers/video/mxsfb.c')
| -rw-r--r-- | drivers/video/mxsfb.c | 62 |
1 files changed, 48 insertions, 14 deletions
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index abbe691047bd..49619b441500 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -41,12 +41,14 @@ #include <linux/module.h> #include <linux/kernel.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/io.h> #include <linux/pinctrl/consumer.h> -#include <mach/mxsfb.h> +#include <linux/mxsfb.h> #define REG_SET 4 #define REG_CLR 8 @@ -750,16 +752,43 @@ static void __devexit mxsfb_free_videomem(struct mxsfb_info *host) } } +static struct platform_device_id mxsfb_devtype[] = { + { + .name = "imx23-fb", + .driver_data = MXSFB_V3, + }, { + .name = "imx28-fb", + .driver_data = MXSFB_V4, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, mxsfb_devtype); + +static const struct of_device_id mxsfb_dt_ids[] = { + { .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devtype[0], }, + { .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devtype[1], }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mxsfb_dt_ids); + static int __devinit mxsfb_probe(struct platform_device *pdev) { + const struct of_device_id *of_id = + of_match_device(mxsfb_dt_ids, &pdev->dev); struct mxsfb_platform_data *pdata = pdev->dev.platform_data; struct resource *res; struct mxsfb_info *host; struct fb_info *fb_info; struct fb_modelist *modelist; struct pinctrl *pinctrl; + int panel_enable; + enum of_gpio_flags flags; int i, ret; + if (of_id) + pdev->id_entry = of_id->data; + if (!pdata) { dev_err(&pdev->dev, "No platformdata. Giving up\n"); return -ENODEV; @@ -807,6 +836,22 @@ static int __devinit mxsfb_probe(struct platform_device *pdev) goto error_getclock; } + panel_enable = of_get_named_gpio_flags(pdev->dev.of_node, + "panel-enable-gpios", 0, &flags); + if (gpio_is_valid(panel_enable)) { + unsigned long f = GPIOF_OUT_INIT_HIGH; + if (flags == OF_GPIO_ACTIVE_LOW) + f = GPIOF_OUT_INIT_LOW; + ret = devm_gpio_request_one(&pdev->dev, panel_enable, + f, "panel-enable"); + if (ret) { + dev_err(&pdev->dev, + "failed to request gpio %d: %d\n", + panel_enable, ret); + goto error_panel_enable; + } + } + fb_info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL); if (!fb_info->pseudo_palette) { ret = -ENOMEM; @@ -854,6 +899,7 @@ error_register: error_init_fb: kfree(fb_info->pseudo_palette); error_pseudo_pallette: +error_panel_enable: clk_put(host->clk); error_getclock: error_getpin: @@ -901,19 +947,6 @@ static void mxsfb_shutdown(struct platform_device *pdev) writel(CTRL_RUN, host->base + LCDC_CTRL + REG_CLR); } -static struct platform_device_id mxsfb_devtype[] = { - { - .name = "imx23-fb", - .driver_data = MXSFB_V3, - }, { - .name = "imx28-fb", - .driver_data = MXSFB_V4, - }, { - /* sentinel */ - } -}; -MODULE_DEVICE_TABLE(platform, mxsfb_devtype); - static struct platform_driver mxsfb_driver = { .probe = mxsfb_probe, .remove = __devexit_p(mxsfb_remove), @@ -921,6 +954,7 @@ static struct platform_driver mxsfb_driver = { .id_table = mxsfb_devtype, .driver = { .name = DRIVER_NAME, + .of_match_table = mxsfb_dt_ids, }, }; |