diff options
Diffstat (limited to 'drivers/video/simple_panel.c')
| -rw-r--r-- | drivers/video/simple_panel.c | 102 |
1 files changed, 76 insertions, 26 deletions
diff --git a/drivers/video/simple_panel.c b/drivers/video/simple_panel.c index efb122b534a..76a30427a59 100644 --- a/drivers/video/simple_panel.c +++ b/drivers/video/simple_panel.c @@ -7,31 +7,22 @@ #include <common.h> #include <backlight.h> #include <dm.h> +#include <edid.h> +#include <i2c.h> #include <log.h> #include <mipi_dsi.h> #include <panel.h> #include <asm/gpio.h> #include <power/regulator.h> +#define EDID_I2C_ADDR 0x50 + struct simple_panel_priv { struct udevice *reg; struct udevice *backlight; struct gpio_desc enable; }; -/* List of supported DSI panels */ -enum { - PANEL_NON_DSI, - PANASONIC_VVX10F004B00, -}; - -static const struct mipi_dsi_panel_plat panasonic_vvx10f004b00 = { - .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | - MIPI_DSI_CLOCK_NON_CONTINUOUS, - .format = MIPI_DSI_FMT_RGB888, - .lanes = 4, -}; - static int simple_panel_enable_backlight(struct udevice *dev) { struct simple_panel_priv *priv = dev_get_priv(dev); @@ -62,13 +53,71 @@ static int simple_panel_set_backlight(struct udevice *dev, int percent) return 0; } +#if CONFIG_IS_ENABLED(I2C_EDID) && CONFIG_IS_ENABLED(DM_I2C) +static int simple_panel_get_edid_timing(struct udevice *dev, + struct display_timing *timings) +{ + struct udevice *panel_ddc, *panel_edid; + struct display_timing edid_timing; + u8 edid_buf[EDID_SIZE] = { 0 }; + int ret, bpc; + /* Check for DDC i2c if no timings are provided */ + ret = uclass_get_device_by_phandle(UCLASS_I2C, dev, + "ddc-i2c-bus", + &panel_ddc); + if (ret) { + log_debug("%s: cannot get DDC i2c bus: error %d\n", + __func__, ret); + return ret; + } + + ret = dm_i2c_probe(panel_ddc, EDID_I2C_ADDR, 0, &panel_edid); + if (ret) { + log_debug("%s: cannot probe EDID: error %d\n", + __func__, ret); + return ret; + } + + ret = dm_i2c_read(panel_edid, 0, edid_buf, sizeof(edid_buf)); + if (ret) { + log_debug("%s: cannot dump EDID buffer: error %d\n", + __func__, ret); + return ret; + } + + ret = edid_get_timing(edid_buf, sizeof(edid_buf), + &edid_timing, &bpc); + if (ret) { + log_debug("%s: cannot decode EDID info: error %d\n", + __func__, ret); + return ret; + } + + memcpy(timings, &edid_timing, sizeof(*timings)); + + return 0; +} +#else +static int simple_panel_get_edid_timing(struct udevice *dev, + struct display_timing *timings) +{ + return -ENOTSUPP; +} +#endif + static int simple_panel_get_display_timing(struct udevice *dev, struct display_timing *timings) { const void *blob = gd->fdt_blob; + int ret; + + /* Check for timing subnode if panel node first */ + ret = fdtdec_decode_display_timing(blob, dev_of_offset(dev), + 0, timings); + if (!ret) + return ret; - return fdtdec_decode_display_timing(blob, dev_of_offset(dev), - 0, timings); + return simple_panel_get_edid_timing(dev, timings); } static int simple_panel_of_to_plat(struct udevice *dev) @@ -111,7 +160,8 @@ static int simple_panel_probe(struct udevice *dev) { struct simple_panel_priv *priv = dev_get_priv(dev); struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); - const u32 dsi_data = dev_get_driver_data(dev); + struct mipi_dsi_panel_plat *dsi_data = + (struct mipi_dsi_panel_plat *)dev_get_driver_data(dev); int ret; ret = regulator_set_enable_if_allowed(priv->reg, true); @@ -121,15 +171,8 @@ static int simple_panel_probe(struct udevice *dev) return ret; } - switch (dsi_data) { - case PANASONIC_VVX10F004B00: - memcpy(plat, &panasonic_vvx10f004b00, - sizeof(panasonic_vvx10f004b00)); - break; - case PANEL_NON_DSI: - default: - break; - } + if (dsi_data) + memcpy(plat, dsi_data, sizeof(struct mipi_dsi_panel_plat)); return 0; } @@ -140,6 +183,13 @@ static const struct panel_ops simple_panel_ops = { .get_display_timing = simple_panel_get_display_timing, }; +static const struct mipi_dsi_panel_plat panasonic_vvx10f004b00 = { + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_CLOCK_NON_CONTINUOUS, + .format = MIPI_DSI_FMT_RGB888, + .lanes = 4, +}; + static const struct udevice_id simple_panel_ids[] = { { .compatible = "simple-panel" }, { .compatible = "auo,b133xtn01" }, @@ -150,7 +200,7 @@ static const struct udevice_id simple_panel_ids[] = { { .compatible = "sharp,lq123p1jx31" }, { .compatible = "boe,nv101wxmn51" }, { .compatible = "panasonic,vvx10f004b00", - .data = PANASONIC_VVX10F004B00 }, + .data = (ulong)&panasonic_vvx10f004b00 }, { } }; |