drm: panel: Add LG sw43408 panel driver
LG SW43408 is 1080x2160@60Hz, 4-lane MIPI-DSI panel, used in some Google Pixel-3 phones. Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> [vinod: Add DSC support] Signed-off-by: Vinod Koul <vkoul@kernel.org> [caleb: cleanup and support turning off the panel] Signed-off-by: Caleb Connolly <caleb@connolly.tech> [DB: partially rewrote the driver and fixed DSC programming] Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240408-lg-sw43408-panel-v5-4-4e092da22991@linaro.org
This commit is contained in:
Sumit Semwal
Dmitry Baryshkov
parent
b724455e89
commit
069a6c0e94
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@ -6764,6 +6764,14 @@ S: Maintained
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F: Documentation/devicetree/bindings/display/panel/jadard,jd9365da-h3.yaml
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F: drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
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DRM DRIVER FOR LG SW43408 PANELS
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M: Sumit Semwal <sumit.semwal@linaro.org>
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M: Caleb Connolly <caleb.connolly@linaro.org>
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S: Maintained
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T: git git://anongit.freedesktop.org/drm/drm-misc
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F: Documentation/devicetree/bindings/display/panel/lg,sw43408.yaml
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F: drivers/gpu/drm/panel/panel-lg-sw43408.c
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DRM DRIVER FOR LOGICVC DISPLAY CONTROLLER
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M: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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S: Supported
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@ -335,6 +335,17 @@ config DRM_PANEL_LG_LG4573
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Say Y here if you want to enable support for LG4573 RGB panel.
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To compile this driver as a module, choose M here.
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config DRM_PANEL_LG_SW43408
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tristate "LG SW43408 panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y here if you want to enable support for LG sw43408 panel.
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The panel has a 1080x2160@60Hz resolution and uses 24 bit RGB per
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pixel. It provides a MIPI DSI interface to the host and has a
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built-in LED backlight.
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config DRM_PANEL_MAGNACHIP_D53E6EA8966
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tristate "Magnachip D53E6EA8966 DSI panel"
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depends on OF && SPI
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@ -34,6 +34,7 @@ obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o
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obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o
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obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
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obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
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obj-$(CONFIG_DRM_PANEL_LG_SW43408) += panel-lg-sw43408.o
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obj-$(CONFIG_DRM_PANEL_MAGNACHIP_D53E6EA8966) += panel-magnachip-d53e6ea8966.o
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obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
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obj-$(CONFIG_DRM_PANEL_NEWVISION_NV3051D) += panel-newvision-nv3051d.o
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@ -0,0 +1,320 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019-2024 Linaro Ltd
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* Author: Sumit Semwal <sumit.semwal@linaro.org>
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* Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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*/
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/display/drm_dsc.h>
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#include <drm/display/drm_dsc_helper.h>
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#define NUM_SUPPLIES 2
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struct sw43408_panel {
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struct drm_panel base;
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struct mipi_dsi_device *link;
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struct regulator_bulk_data supplies[NUM_SUPPLIES];
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struct gpio_desc *reset_gpio;
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struct drm_dsc_config dsc;
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};
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static inline struct sw43408_panel *to_panel_info(struct drm_panel *panel)
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{
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return container_of(panel, struct sw43408_panel, base);
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}
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static int sw43408_unprepare(struct drm_panel *panel)
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{
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struct sw43408_panel *ctx = to_panel_info(panel);
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int ret;
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ret = mipi_dsi_dcs_set_display_off(ctx->link);
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if (ret < 0)
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dev_err(panel->dev, "set_display_off cmd failed ret = %d\n", ret);
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ret = mipi_dsi_dcs_enter_sleep_mode(ctx->link);
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if (ret < 0)
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dev_err(panel->dev, "enter_sleep cmd failed ret = %d\n", ret);
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msleep(100);
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gpiod_set_value(ctx->reset_gpio, 1);
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return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
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}
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static int sw43408_program(struct drm_panel *panel)
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{
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struct sw43408_panel *ctx = to_panel_info(panel);
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struct drm_dsc_picture_parameter_set pps;
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mipi_dsi_dcs_write_seq(ctx->link, MIPI_DCS_SET_GAMMA_CURVE, 0x02);
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mipi_dsi_dcs_set_tear_on(ctx->link, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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mipi_dsi_dcs_write_seq(ctx->link, 0x53, 0x0c, 0x30);
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mipi_dsi_dcs_write_seq(ctx->link, 0x55, 0x00, 0x70, 0xdf, 0x00, 0x70, 0xdf);
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mipi_dsi_dcs_write_seq(ctx->link, 0xf7, 0x01, 0x49, 0x0c);
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mipi_dsi_dcs_exit_sleep_mode(ctx->link);
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msleep(135);
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/* COMPRESSION_MODE moved after setting the PPS */
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mipi_dsi_dcs_write_seq(ctx->link, 0xb0, 0xac);
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mipi_dsi_dcs_write_seq(ctx->link, 0xe5,
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0x00, 0x3a, 0x00, 0x3a, 0x00, 0x0e, 0x10);
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mipi_dsi_dcs_write_seq(ctx->link, 0xb5,
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0x75, 0x60, 0x2d, 0x5d, 0x80, 0x00, 0x0a, 0x0b,
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0x00, 0x05, 0x0b, 0x00, 0x80, 0x0d, 0x0e, 0x40,
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0x00, 0x0c, 0x00, 0x16, 0x00, 0xb8, 0x00, 0x80,
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0x0d, 0x0e, 0x40, 0x00, 0x0c, 0x00, 0x16, 0x00,
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0xb8, 0x00, 0x81, 0x00, 0x03, 0x03, 0x03, 0x01,
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0x01);
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msleep(85);
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mipi_dsi_dcs_write_seq(ctx->link, 0xcd,
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0x00, 0x00, 0x00, 0x19, 0x19, 0x19, 0x19, 0x19,
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0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19,
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0x16, 0x16);
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mipi_dsi_dcs_write_seq(ctx->link, 0xcb, 0x80, 0x5c, 0x07, 0x03, 0x28);
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mipi_dsi_dcs_write_seq(ctx->link, 0xc0, 0x02, 0x02, 0x0f);
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mipi_dsi_dcs_write_seq(ctx->link, 0x55, 0x04, 0x61, 0xdb, 0x04, 0x70, 0xdb);
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mipi_dsi_dcs_write_seq(ctx->link, 0xb0, 0xca);
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mipi_dsi_dcs_set_display_on(ctx->link);
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msleep(50);
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ctx->link->mode_flags &= ~MIPI_DSI_MODE_LPM;
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drm_dsc_pps_payload_pack(&pps, ctx->link->dsc);
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mipi_dsi_picture_parameter_set(ctx->link, &pps);
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ctx->link->mode_flags |= MIPI_DSI_MODE_LPM;
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/*
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* This panel uses PPS selectors with offset:
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* PPS 1 if pps_identifier is 0
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* PPS 2 if pps_identifier is 1
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*/
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mipi_dsi_compression_mode_ext(ctx->link, true,
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MIPI_DSI_COMPRESSION_DSC, 1);
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return 0;
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}
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static int sw43408_prepare(struct drm_panel *panel)
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{
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struct sw43408_panel *ctx = to_panel_info(panel);
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int ret;
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ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
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if (ret < 0)
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return ret;
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usleep_range(5000, 6000);
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gpiod_set_value(ctx->reset_gpio, 0);
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usleep_range(9000, 10000);
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gpiod_set_value(ctx->reset_gpio, 1);
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usleep_range(1000, 2000);
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gpiod_set_value(ctx->reset_gpio, 0);
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usleep_range(9000, 10000);
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ret = sw43408_program(panel);
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if (ret)
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goto poweroff;
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return 0;
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poweroff:
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gpiod_set_value(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
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return ret;
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}
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static const struct drm_display_mode sw43408_mode = {
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.clock = (1080 + 20 + 32 + 20) * (2160 + 20 + 4 + 20) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 20,
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.hsync_end = 1080 + 20 + 32,
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.htotal = 1080 + 20 + 32 + 20,
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.vdisplay = 2160,
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.vsync_start = 2160 + 20,
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.vsync_end = 2160 + 20 + 4,
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.vtotal = 2160 + 20 + 4 + 20,
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.width_mm = 62,
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.height_mm = 124,
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.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
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};
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static int sw43408_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector, &sw43408_mode);
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}
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static int sw43408_backlight_update_status(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = backlight_get_brightness(bl);
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return mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
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}
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const struct backlight_ops sw43408_backlight_ops = {
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.update_status = sw43408_backlight_update_status,
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};
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static int sw43408_backlight_init(struct sw43408_panel *ctx)
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{
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struct device *dev = &ctx->link->dev;
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const struct backlight_properties props = {
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.type = BACKLIGHT_PLATFORM,
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.brightness = 255,
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.max_brightness = 255,
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};
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ctx->base.backlight = devm_backlight_device_register(dev, dev_name(dev), dev,
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ctx->link,
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&sw43408_backlight_ops,
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&props);
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if (IS_ERR(ctx->base.backlight))
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return dev_err_probe(dev, PTR_ERR(ctx->base.backlight),
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"Failed to create backlight\n");
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return 0;
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}
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static const struct drm_panel_funcs sw43408_funcs = {
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.unprepare = sw43408_unprepare,
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.prepare = sw43408_prepare,
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.get_modes = sw43408_get_modes,
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};
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static const struct of_device_id sw43408_of_match[] = {
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{ .compatible = "lg,sw43408", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, sw43408_of_match);
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static int sw43408_add(struct sw43408_panel *ctx)
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{
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struct device *dev = &ctx->link->dev;
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int ret;
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ctx->supplies[0].supply = "vddi"; /* 1.88 V */
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ctx->supplies[0].init_load_uA = 62000;
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ctx->supplies[1].supply = "vpnl"; /* 3.0 V */
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ctx->supplies[1].init_load_uA = 857000;
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ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
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ctx->supplies);
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if (ret < 0)
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return ret;
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio)) {
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ret = PTR_ERR(ctx->reset_gpio);
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return dev_err_probe(dev, ret, "cannot get reset gpio\n");
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}
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ret = sw43408_backlight_init(ctx);
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if (ret < 0)
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return ret;
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ctx->base.prepare_prev_first = true;
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drm_panel_init(&ctx->base, dev, &sw43408_funcs, DRM_MODE_CONNECTOR_DSI);
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drm_panel_add(&ctx->base);
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return ret;
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}
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static int sw43408_probe(struct mipi_dsi_device *dsi)
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{
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struct sw43408_panel *ctx;
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int ret;
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ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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dsi->mode_flags = MIPI_DSI_MODE_LPM;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->lanes = 4;
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ctx->link = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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ret = sw43408_add(ctx);
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if (ret < 0)
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return ret;
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/* The panel works only in the DSC mode. Set DSC params. */
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ctx->dsc.dsc_version_major = 0x1;
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ctx->dsc.dsc_version_minor = 0x1;
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/* slice_count * slice_width == width */
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ctx->dsc.slice_height = 16;
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ctx->dsc.slice_width = 540;
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ctx->dsc.slice_count = 2;
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ctx->dsc.bits_per_component = 8;
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ctx->dsc.bits_per_pixel = 8 << 4;
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ctx->dsc.block_pred_enable = true;
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dsi->dsc = &ctx->dsc;
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return mipi_dsi_attach(dsi);
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}
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static void sw43408_remove(struct mipi_dsi_device *dsi)
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{
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struct sw43408_panel *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = sw43408_unprepare(&ctx->base);
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if (ret < 0)
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dev_err(&dsi->dev, "failed to unprepare panel: %d\n", ret);
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->base);
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}
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static struct mipi_dsi_driver sw43408_driver = {
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.driver = {
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.name = "panel-lg-sw43408",
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.of_match_table = sw43408_of_match,
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},
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.probe = sw43408_probe,
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.remove = sw43408_remove,
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};
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module_mipi_dsi_driver(sw43408_driver);
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MODULE_AUTHOR("Sumit Semwal <sumit.semwal@linaro.org>");
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MODULE_DESCRIPTION("LG SW436408 MIPI-DSI LED panel");
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MODULE_LICENSE("GPL");
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