diff options
Diffstat (limited to 'drivers/video/nxp/imx/imx93-parallel-disp-fmt.c')
| -rw-r--r-- | drivers/video/nxp/imx/imx93-parallel-disp-fmt.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/video/nxp/imx/imx93-parallel-disp-fmt.c b/drivers/video/nxp/imx/imx93-parallel-disp-fmt.c new file mode 100644 index 0000000000..72af93873f --- /dev/null +++ b/drivers/video/nxp/imx/imx93-parallel-disp-fmt.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2022 NXP + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <panel.h> +#include <reset.h> +#include <video.h> +#include <video_bridge.h> +#include <video_link.h> +#include <asm/io.h> +#include <asm/arch/gpio.h> +#include <dm/device-internal.h> +#include <linux/iopoll.h> +#include <linux/err.h> +#include <media_bus_format.h> + +#define DISPLAY_MUX_CTRL 0x60 +#define PARALLEL_DISP_FORMAT 0x700 + +enum imx93_pdf_format { + RGB888_TO_RGB888 = 0x0, + RGB888_TO_RGB666 = 0x1 << 8, + RGB565_TO_RGB565 = 0x2 << 8, +}; + +struct imx93_pdf_priv { + struct udevice *panel; + struct display_timing adj; + enum imx93_pdf_format format; + void *__iomem addr; +}; + +static int imx93_pdf_attach(struct udevice *dev) +{ + struct imx93_pdf_priv *priv = dev_get_priv(dev); + struct display_timing timings; + int ret; + + priv->panel = video_link_get_next_device(dev); + if (!priv->panel || + device_get_uclass_id(priv->panel) != UCLASS_PANEL) { + dev_err(dev, "get panel device error\n"); + return -ENODEV; + } + + ret = video_link_get_display_timings(&timings); + if (ret) { + dev_err(dev, "decode display timing error %d\n", ret); + return ret; + } + + priv->adj = timings; + + writel(priv->format, priv->addr + DISPLAY_MUX_CTRL); + + return 0; +} + +static int imx93_pdf_check_timing(struct udevice *dev, struct display_timing *timing) +{ + struct imx93_pdf_priv *priv = dev_get_priv(dev); + + /* Ensure the bridge device attached to panel */ + if (!priv->panel) { + dev_err(dev, "%s No panel device attached\n", __func__); + return -ENOTCONN; + } + + *timing = priv->adj; + + return 0; +} + +static int imx93_pdf_probe(struct udevice *dev) +{ + struct imx93_pdf_priv *priv = dev_get_priv(dev); + const char *fmt; + u32 bus_format; + int ret; + + priv->addr = (void __iomem *)dev_read_addr(dev_get_parent(dev)); + if ((fdt_addr_t)priv->addr == FDT_ADDR_T_NONE) { + dev_err(dev, "not able to get addr\n"); + return -EINVAL; + } + + ret = ofnode_read_string_index(dev_ofnode(dev), "fsl,interface-pix-fmt", 0, &fmt); + if (!ret) { + if (!strcmp(fmt, "rgb565")) + bus_format = MEDIA_BUS_FMT_RGB565_1X16; + else if (!strcmp(fmt, "rgb666")) + bus_format = MEDIA_BUS_FMT_RGB666_1X18; + else if (!strcmp(fmt, "rgb888")) + bus_format = MEDIA_BUS_FMT_RGB888_1X24; + + } + + switch (bus_format) { + case MEDIA_BUS_FMT_RGB565_1X16: + priv->format = RGB565_TO_RGB565; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + priv->format = RGB888_TO_RGB666; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + priv->format = RGB888_TO_RGB888; + break; + default: + dev_dbg(dev, "invalid bus format 0x%x\n", bus_format); + return -EINVAL; + } + + + return 0; +} + +static int imx93_pdf_remove(struct udevice *dev) +{ + struct imx93_pdf_priv *priv = dev_get_priv(dev); + + if (priv->panel) + device_remove(priv->panel, DM_REMOVE_NORMAL); + + return 0; +} + +static int imx93_pdf_set_backlight(struct udevice *dev, int percent) +{ + struct imx93_pdf_priv *priv = dev_get_priv(dev); + int ret; + + ret = panel_enable_backlight(priv->panel); + if (ret) { + dev_err(dev, "panel %s enable backlight error %d\n", priv->panel->name, ret); + return ret; + } + + return 0; +} + +struct video_bridge_ops imx93_pdf_ops = { + .attach = imx93_pdf_attach, + .check_timing = imx93_pdf_check_timing, + .set_backlight = imx93_pdf_set_backlight, +}; + +static const struct udevice_id imx93_pdf_ids[] = { + { .compatible = "fsl,imx93-parallel-display-format" }, + { } +}; + +U_BOOT_DRIVER(imx93_pdf_driver) = { + .name = "imx93_pdf_driver", + .id = UCLASS_VIDEO_BRIDGE, + .of_match = imx93_pdf_ids, + .bind = dm_scan_fdt_dev, + .remove = imx93_pdf_remove, + .probe = imx93_pdf_probe, + .ops = &imx93_pdf_ops, + .priv_auto = sizeof(struct imx93_pdf_priv), +}; |