Add a DRM panel driver for the Tianma TL121BVMS07-00 12.1" MIPI-DSI TFT LCD panel. The panel requires multiple power supplies (AVDD, AVEE, 1.8V logic), an enable GPIO, and a backlight device. The panel is based on the Ilitek IL79900A controller.
Signed-off-by: Langyan Ye <[email protected]> --- .../drm/panel/panel-tianma-tl121bvms07-00.c | 419 ++++++++++++++++++ 1 file changed, 419 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-tianma-tl121bvms07-00.c diff --git a/drivers/gpu/drm/panel/panel-tianma-tl121bvms07-00.c b/drivers/gpu/drm/panel/panel-tianma-tl121bvms07-00.c new file mode 100644 index 000000000000..5facffeda864 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-tianma-tl121bvms07-00.c @@ -0,0 +1,419 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * DRM panel driver for Tianma TL121BVMS07-00 12.1" MIPI-DSI TFT LCD panel + * + * Based on drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c + */ + + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/drm_connector.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +struct tm_panel; + +struct panel_desc { + const struct drm_display_mode *modes; + unsigned int bpc; + + /** + * @width_mm: width of the panel's active display area + * @height_mm: height of the panel's active display area + */ + struct { + unsigned int width_mm; + unsigned int height_mm; + } size; + + unsigned long mode_flags; + enum mipi_dsi_pixel_format format; + int (*init)(struct tm_panel *tm); + unsigned int lanes; + bool discharge_on_disable; + bool lp11_before_reset; +}; + +struct tm_panel { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + const struct panel_desc *desc; + + enum drm_panel_orientation orientation; + struct regulator *pp1800; + struct regulator *avee; + struct regulator *avdd; + struct gpio_desc *enable_gpio; + + bool prepared; +}; + +static int tm_tl121bvms07_00_init(struct tm_panel *tm) +{ + struct mipi_dsi_multi_context ctx = { .dsi = tm->dsi }; + struct mipi_dsi_device *dsi = ctx.dsi; + + mipi_dsi_dcs_write_seq_multi(&ctx, 0xff, 0x5a, 0xa5, 0x06); + mipi_dsi_dcs_write_seq_multi(&ctx, 0x3e, 0x62); + + + mipi_dsi_generic_write_seq(dsi, 0xff, 0x5a, 0xa5, 0x02); + mipi_dsi_dcs_write_seq_multi(&ctx, 0x1b, 0x20); + mipi_dsi_dcs_write_seq_multi(&ctx, 0x5d, 0x00); + mipi_dsi_dcs_write_seq_multi(&ctx, 0x5e, 0x40); + + mipi_dsi_dcs_write_seq_multi(&ctx, 0xff, 0x5a, 0xa5, 0x07); + mipi_dsi_dcs_write_seq_multi(&ctx, 0X29, 0x00); + + mipi_dsi_generic_write_seq(dsi, 0xff, 0x5a, 0xa5, 0x00); + + mipi_dsi_dcs_write_seq_multi(&ctx, 0X11); + + if (ctx.accum_err) + return ctx.accum_err; + + msleep(120); + + mipi_dsi_dcs_write_seq_multi(&ctx, 0X29); + + if (ctx.accum_err) + return ctx.accum_err; + + msleep(80); + + return 0; +}; + +static inline struct tm_panel *to_tm_panel(struct drm_panel *panel) +{ + return container_of(panel, struct tm_panel, base); +} + +static int tm_panel_enter_sleep_mode(struct tm_panel *tm) +{ + struct mipi_dsi_device *dsi = tm->dsi; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + return ret; + + return 0; +} + +static int tm_panel_disable(struct drm_panel *panel) +{ + struct tm_panel *tm = to_tm_panel(panel); + int ret; + + ret = tm_panel_enter_sleep_mode(tm); + if (ret < 0) { + dev_err(panel->dev, "failed to set panel off: %d\n", ret); + return ret; + } + + msleep(150); + + return 0; +} + +static int tm_panel_unprepare(struct drm_panel *panel) +{ + struct tm_panel *tm = to_tm_panel(panel); + + if (!tm->prepared) + return 0; + + if (tm->desc->discharge_on_disable) { + regulator_disable(tm->avee); + regulator_disable(tm->avdd); + usleep_range(5000, 7000); + gpiod_set_value(tm->enable_gpio, 0); + usleep_range(5000, 7000); + regulator_disable(tm->pp1800); + } else { + gpiod_set_value(tm->enable_gpio, 0); + usleep_range(1000, 2000); + regulator_disable(tm->avee); + regulator_disable(tm->avdd); + usleep_range(5000, 7000); + regulator_disable(tm->pp1800); + } + + tm->prepared = false; + + return 0; +} + +static int tm_panel_prepare(struct drm_panel *panel) +{ + struct tm_panel *tm = to_tm_panel(panel); + int ret; + + if (tm->prepared) + return 0; + + ret = regulator_enable(tm->pp1800); + if (ret < 0) + return ret; + + usleep_range(6000, 8000); + + ret = regulator_enable(tm->avdd); + if (ret < 0) + goto poweroff1v8; + ret = regulator_enable(tm->avee); + if (ret < 0) + goto poweroffavdd; + + usleep_range(11000, 12000); + + gpiod_set_value(tm->enable_gpio, 1); + + if (tm->desc->lp11_before_reset) { + ret = mipi_dsi_dcs_nop(tm->dsi); + if (ret < 0) { + dev_err(&tm->dsi->dev, "Failed to send NOP: %d\n", ret); + goto poweroff; + } + usleep_range(1000, 2000); + } + gpiod_set_value(tm->enable_gpio, 0); + usleep_range(1000, 2000); + gpiod_set_value(tm->enable_gpio, 1); + usleep_range(20000, 21000); + + ret = tm->desc->init(tm); + if (ret < 0) + goto poweroff; + + tm->prepared = true; + return 0; + +poweroff: + gpiod_set_value(tm->enable_gpio, 0); + regulator_disable(tm->avee); +poweroffavdd: + regulator_disable(tm->avdd); +poweroff1v8: + usleep_range(5000, 7000); + regulator_disable(tm->pp1800); + + return ret; +} + +static int tm_panel_enable(struct drm_panel *panel) +{ + msleep(130); + return 0; +} + +static const struct drm_display_mode tm_tl121bvms07_00_default_mode = { + .clock = 264355, + .hdisplay = 1600, + .hsync_start = 1600 + 20, + .hsync_end = 1600 + 20 + 4, + .htotal = 1600 + 20 + 4 + 20, + .vdisplay = 2560, + .vsync_start = 2560 + 82, + .vsync_end = 2560 + 82 + 2, + .vtotal = 2560 + 82 + 2 + 36, +}; + +static const struct panel_desc tm_tl121bvms07_00_desc = { + .modes = &tm_tl121bvms07_00_default_mode, + .bpc = 8, + .size = { + .width_mm = 163, + .height_mm = 260, + }, + .lanes = 3, + .format = MIPI_DSI_FMT_RGB888, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_LPM, + .init = tm_tl121bvms07_00_init, + .lp11_before_reset = true, +}; + +static int tm_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct tm_panel *tm = to_tm_panel(panel); + const struct drm_display_mode *m = tm->desc->modes; + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, m); + if (!mode) { + dev_err(panel->dev, "failed to add mode %ux%u@%u\n", + m->hdisplay, m->vdisplay, drm_mode_vrefresh(m)); + return -ENOMEM; + } + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + + connector->display_info.width_mm = tm->desc->size.width_mm; + connector->display_info.height_mm = tm->desc->size.height_mm; + connector->display_info.bpc = tm->desc->bpc; + /* + * TODO: Remove once all drm drivers call + * drm_connector_set_orientation_from_panel() + */ + drm_connector_set_panel_orientation(connector, tm->orientation); + + return 1; +} + +static enum drm_panel_orientation tm_panel_get_orientation(struct drm_panel *panel) +{ + struct tm_panel *tm = to_tm_panel(panel); + + return tm->orientation; +} + +static const struct drm_panel_funcs tm_panel_funcs = { + .disable = tm_panel_disable, + .unprepare = tm_panel_unprepare, + .prepare = tm_panel_prepare, + .enable = tm_panel_enable, + .get_modes = tm_panel_get_modes, + .get_orientation = tm_panel_get_orientation, +}; + +static int tm_panel_add(struct tm_panel *tm) +{ + struct device *dev = &tm->dsi->dev; + int err; + + tm->avdd = devm_regulator_get(dev, "avdd"); + if (IS_ERR(tm->avdd)) + return PTR_ERR(tm->avdd); + + tm->avee = devm_regulator_get(dev, "avee"); + if (IS_ERR(tm->avee)) + return PTR_ERR(tm->avee); + + tm->pp1800 = devm_regulator_get(dev, "pp1800"); + if (IS_ERR(tm->pp1800)) + return PTR_ERR(tm->pp1800); + + tm->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(tm->enable_gpio)) { + dev_err(dev, "cannot get reset-gpios %ld\n", + PTR_ERR(tm->enable_gpio)); + return PTR_ERR(tm->enable_gpio); + } + + gpiod_set_value(tm->enable_gpio, 0); + + tm->base.prepare_prev_first = true; + + drm_panel_init(&tm->base, dev, &tm_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + err = of_drm_get_panel_orientation(dev->of_node, &tm->orientation); + if (err < 0) { + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); + return err; + } + + err = drm_panel_of_backlight(&tm->base); + if (err) + return err; + + tm->base.funcs = &tm_panel_funcs; + tm->base.dev = &tm->dsi->dev; + + drm_panel_add(&tm->base); + + return 0; +} + +static int tm_panel_probe(struct mipi_dsi_device *dsi) +{ + struct tm_panel *tm; + int ret; + const struct panel_desc *desc; + + tm = devm_kzalloc(&dsi->dev, sizeof(*tm), GFP_KERNEL); + if (!tm) + return -ENOMEM; + + desc = of_device_get_match_data(&dsi->dev); + dsi->lanes = desc->lanes; + dsi->format = desc->format; + dsi->mode_flags = desc->mode_flags; + tm->desc = desc; + tm->dsi = dsi; + ret = tm_panel_add(tm); + if (ret < 0) + return ret; + + mipi_dsi_set_drvdata(dsi, tm); + + ret = mipi_dsi_attach(dsi); + if (ret) + drm_panel_remove(&tm->base); + return ret; +} + +static void tm_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct tm_panel *tm = mipi_dsi_get_drvdata(dsi); + + drm_panel_disable(&tm->base); + drm_panel_unprepare(&tm->base); +} + +static void tm_panel_remove(struct mipi_dsi_device *dsi) +{ + struct tm_panel *tm = mipi_dsi_get_drvdata(dsi); + int ret; + + tm_panel_shutdown(dsi); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); + + if (tm->base.dev) + drm_panel_remove(&tm->base); +} + +static const struct of_device_id tm_of_match[] = { + { .compatible = "tianma,tl121bvms07-00", + .data = &tm_tl121bvms07_00_desc + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, tm_of_match); + +static struct mipi_dsi_driver tm_panel_driver = { + .driver = { + .name = "panel-tianma-tl121bvms07-00", + .of_match_table = tm_of_match, + }, + .probe = tm_panel_probe, + .remove = tm_panel_remove, + .shutdown = tm_panel_shutdown, +}; +module_mipi_dsi_driver(tm_panel_driver); + +MODULE_AUTHOR("Langyan Ye <[email protected]>"); +MODULE_DESCRIPTION("TM tl121bvms07-00 1600x2560 video mode panel driver"); +MODULE_LICENSE("GPL"); -- 2.34.1
