Add panel driver for it.
Signed-off-by: Jerry Han <hanxu5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
MAINTAINERS | 6 +
drivers/gpu/drm/panel/Kconfig | 11 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-boe-himax8279d.c | 593 +++++++++++++++++++
4 files changed, 611 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-boe-himax8279d.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 28f4a20940cb..7c6ac18b922e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5110,6 +5110,12 @@ S: Maintained
F: drivers/gpu/drm/tiny/ili9225.c
F: Documentation/devicetree/bindings/display/ilitek,ili9225.txt
+DRM DRIVER FOR BOE HIMAX8279D PANELS
+M: Jerry Han <hanxu5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
+S: Maintained
+F: drivers/gpu/drm/panel/panel-boe-himax8279d.c
+F: Documentation/devicetree/bindings/display/panel/boe,himax8279d.txt
+
DRM DRIVER FOR HX8357D PANELS
M: Eric Anholt <eric@xxxxxxxxxx>
T: git git://anongit.freedesktop.org/drm/drm-misc
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index f152bc4eeb53..cfd8c886fff7 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -339,6 +339,17 @@ config DRM_PANEL_TPO_TD043MTEA1
Say Y here if you want to enable support for TPO TD043MTEA1 800x480
4.3" panel (found on the OMAP3 Pandora board).
+config DRM_PANEL_BOE_HIMAX8279D
+ tristate "Boe Himax8279d panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y here if you want to enable support for Same type
+ TFT-LCD modules. The panel has a 1200x1920 resolution and uses
+ 24 bit RGB per pixel. It provides a MIPI DSI interface to
+ the host and has a built-in LED backlight.
+
config DRM_PANEL_TPO_TPG110
tristate "TPO TPG 800x400 panel"
depends on OF && SPI && GPIOLIB
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index b6cd39fe0f20..a771c92f880a 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -36,5 +36,6 @@ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
+obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
new file mode 100644
index 000000000000..2788bdda69ec
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
@@ -0,0 +1,593 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019, Huaqin Electronics Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/backlight.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+#include <linux/err.h>
+
+struct dsi_cmd_desc {
+ char wait;
+ char cmd;
+ char len;
+ char *payload;
+};
+
+struct dsi_panel_cmds {
+ char *buf;
+ int blen;
+ struct dsi_cmd_desc *cmds;
+ int cmd_cnt;
+};
+
+struct panel_info {
+ struct drm_panel base;
+ struct mipi_dsi_device *link;
+
+ struct backlight_device *backlight;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *pp33000_gpio;
+ struct gpio_desc *pp18000_gpio;
+
+ u32 rst_seq[10];
+ u32 rst_seq_len;
+
+ struct dsi_panel_cmds *on_cmds;
+ struct dsi_panel_cmds *off_cmds;
+ struct drm_display_mode *panel_display_mode;
+
+ unsigned int panel_width_mm;
+ unsigned int panel_height_mm;
+ unsigned int per_color_channel;
+
+ bool prepared;
+ bool enabled;
+};
+
+static int dsi_parse_reset_seq(struct device_node *np, u32 rst_seq[10],
+ u32 *rst_len, const char *name)
+{
+ int num = 0, i;
+ int rc;
+ struct property *data;
+ u32 tmp[10];
+ *rst_len = 0;
+ data = of_find_property(np, name, &num);
+
+ num /= sizeof(u32);
+ if (!data || !num || num > 10 || num % 2) {
+ pr_err("%s:%d, error reading %s, length found = %d\n",
+ __func__, __LINE__, name, num);
+ return -EINVAL;
+ }
+
+ rc = of_property_read_u32_array(np, name, tmp, num);
+ if (rc) {
+ pr_err("%s:%d, error reading %s, rc = %d\n",
+ __func__, __LINE__, name, rc);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < num; ++i) {
+ rst_seq[i] = tmp[i];
+ *rst_len = num;
+ }
+ return 0;
+}
+
+ssize_t mipi_dsi_dcs_write_delay(struct mipi_dsi_device *dsi, u8 cmd,
+ const void *data, size_t len, size_t time)
+{
+ ssize_t ret;
+
+ if (len == 0)
+ ret = mipi_dsi_dcs_write(dsi, cmd, NULL, 0);
+ else
+ ret = mipi_dsi_dcs_write(dsi, cmd, data, len);
+
+ msleep(time);
+
+ return ret;
+}
+
+static int write_cmds(struct mipi_dsi_device *dsi_device,
+ struct dsi_panel_cmds *init_cmds)
+{
+ struct dsi_cmd_desc *one_cmd = init_cmds->cmds;
+ int i = 0;
+ int ret;
+
+ for (i = 0; i < init_cmds->cmd_cnt; i++) {
+ if (one_cmd == NULL)
+ return -EINVAL;
+
+ ret = mipi_dsi_dcs_write_delay(dsi_device,
+ one_cmd->cmd, one_cmd->payload,
+ one_cmd->len, one_cmd->wait);
+ one_cmd++;
+ }
+
+ return ret;
+}
+
+static int parse_dcs_cmds(struct device_node *np,
+ struct dsi_panel_cmds *pcmds, char *cmd_key)
+{
+ const char *data;
+ int blen = 0, len, cnt = 0;
+ char *buf, *bp;
+ struct dsi_cmd_desc *temp_cmd;
+
+ data = of_get_property(np, cmd_key, &blen);
+ if (!data) {
+ pr_err("%s: failed, key=%s\n", __func__, cmd_key);
+ return -ENOMEM;
+ }
+
+ buf = kzalloc(sizeof(char) * blen, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ memcpy(buf, data, blen);
+
+ /* scan dcs commands */
+ bp = buf;
+ len = blen;
+
+ /* get how much cmd cnt */
+ while (len > 0) {
+ cnt++;
+ len = len - *(bp);
+ bp = bp + *(bp);
+ }
+
+ pcmds->cmd_cnt = cnt;
+
+ pcmds->cmds = kcalloc(cnt, sizeof(struct dsi_cmd_desc), GFP_KERNEL);
+ if (!pcmds->cmds)
+ return -ENOMEM;
+ temp_cmd = pcmds->cmds;
+
+ bp = buf;
+ len = blen;
+
+ while (cnt != 0) {
+ temp_cmd->wait = *(bp+1);
+ temp_cmd->cmd = *(bp+2);
+ temp_cmd->len = *(bp) - 3;
+ temp_cmd->payload = bp + 3;
+
+ cnt--;
+ temp_cmd++;
+ bp = bp + *(bp);
+ }
+
+ pcmds->buf = buf;
+ pcmds->blen = blen;
+
+ return 0;
+}
+
+static int panel_parse_dt(struct panel_info *pinfo)
+{
+ struct device_node *panels_node;
+ struct device_node *parameter_node;
+ static const char *lcd_name;
+ static const char *panel_parameter;
+ struct drm_display_mode *display_mode;
+ struct mipi_dsi_device *dsi_device = pinfo->link;
+ int ret = 0;
+ u32 tmp;
+
+ panels_node = of_find_node_by_name(NULL, "panels");
+ if (!panels_node) {
+ pr_err("Get panels node Fail!\n");
+ return -EINVAL;
+ }
+
+ panel_parameter = of_get_property(panels_node, "panel-parameter", NULL);
+ if (!panel_parameter) {
+ pr_err("Get panel parameter Fail!\n");
+ return -EINVAL;
+ }
+
+ parameter_node = of_find_node_by_name(panels_node, panel_parameter);
+ if (!parameter_node)
+ return -ENODEV;
+
+ /* get lcd name */
+ lcd_name = of_get_property(parameter_node, "dsi-panel-name", NULL);
+ if (!lcd_name) {
+ pr_err("Get lcd_name Fail!\n");
+ return -EINVAL;
+ }
+ pr_info("%s: Lcd Name = %s\n", __func__, lcd_name);
+
+ /* get lcd init code */
+ pinfo->on_cmds = kzalloc(sizeof(struct dsi_panel_cmds), GFP_KERNEL);
+ if (!(pinfo->on_cmds))
+ return -ENOMEM;
+
+ ret = parse_dcs_cmds(parameter_node, pinfo->on_cmds, "dsi-on-command");
+ if (ret < 0) {
+ pr_err("Get Dsi on command Fail\n");
+ return -EINVAL;
+ }
+
+ /* get lcd off code */
+ pinfo->off_cmds = kzalloc(sizeof(struct dsi_panel_cmds), GFP_KERNEL);
+ if (!(pinfo->off_cmds))
+ return -ENOMEM;
+
+ ret = parse_dcs_cmds(parameter_node, pinfo->off_cmds,
+ "dsi-off-command");
+ if (ret < 0) {
+ pr_err("Get Dsi off command Fail\n");
+ return -EINVAL;
+ }
+
+ /* get Porch */
+ display_mode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
+ if (!display_mode)
+ return -ENOMEM;
+ pinfo->panel_display_mode = display_mode;
+
+ ret = of_property_read_u32(parameter_node, "dsi-pixel-clk", &tmp);
+ display_mode->clock = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node,
+ "dsi-panel-hzorizontal", &tmp);
+ display_mode->hdisplay = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node, "dsi-h-front-porch", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->hsync_start = display_mode->hdisplay + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-h-back-porch", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->hsync_end = display_mode->hsync_start + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-h-pulse-width", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->htotal = display_mode->hsync_end + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-panel-vertical", &tmp);
+ display_mode->vdisplay = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node, "dsi-v-front-porch", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->vsync_start = display_mode->vdisplay + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-v-back-porch", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->vsync_end = display_mode->vsync_start + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-v-pulse-width", &tmp);
+ tmp = (!ret ? tmp : 0);
+ display_mode->vtotal = display_mode->vsync_end + tmp;
+
+ ret = of_property_read_u32(parameter_node, "dsi-panel-refresh", &tmp);
+ display_mode->vrefresh = (!ret ? tmp : 0);
+
+ /* get lans */
+ ret = of_property_read_u32(parameter_node, "dsi-panel-lanes", &tmp);
+ dsi_device->lanes = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node, "dsi-panel-format", &tmp);
+ dsi_device->format = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node,
+ "dsi-panel-mode-flags", &tmp);
+ dsi_device->mode_flags = (!ret ? tmp : 0);
+
+ /* get WxH */
+ ret = of_property_read_u32(parameter_node, "dsi-panel-width-mm", &tmp);
+ pinfo->panel_width_mm = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node, "dsi-panel-height-mm", &tmp);
+ pinfo->panel_height_mm = (!ret ? tmp : 0);
+
+ ret = of_property_read_u32(parameter_node, "per-color-channel", &tmp);
+ pinfo->per_color_channel = (!ret ? tmp : 0);
+
+ /* reset time */
+ ret = dsi_parse_reset_seq(parameter_node, pinfo->rst_seq,
+ &(pinfo->rst_seq_len), "dsi-reset-sequence");
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static inline struct panel_info *to_panel_info(struct drm_panel *panel)
+{
+ return container_of(panel, struct panel_info, base);
+}
+
+static int panel_disable(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+
+ if (!pinfo->enabled)
+ return 0;
+
+ backlight_disable(pinfo->backlight);
+
+ pinfo->enabled = false;
+
+ return 0;
+}
+
+static int panel_unprepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int err;
+
+ if (!pinfo->prepared)
+ return 0;
+
+ err = write_cmds(pinfo->link, pinfo->off_cmds);
+ if (err < 0) {
+ dev_err(panel->dev,
+ "failed to send DCS Off Code: %d\n", err);
+ return err;
+ }
+
+ usleep_range(1000, 1000);
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 0);
+ gpiod_set_value_cansleep(pinfo->pp33000_gpio, 0);
+ gpiod_set_value_cansleep(pinfo->pp18000_gpio, 0);
+
+ pinfo->prepared = false;
+
+ return 0;
+}
+
+static int panel_prepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int err, i;
+
+ if (pinfo->prepared)
+ return 0;
+
+ gpiod_set_value_cansleep(pinfo->pp18000_gpio, 1);
+ gpiod_set_value_cansleep(pinfo->pp33000_gpio, 1);
+
+ /* reset sequence */
+ for (i = 0; i < pinfo->rst_seq_len; ++i) {
+ gpiod_set_value_cansleep(pinfo->reset_gpio, pinfo->rst_seq[i]);
+ if (pinfo->rst_seq[++i])
+ usleep_range(pinfo->rst_seq[i] * 1000,
+ pinfo->rst_seq[i] * 1000);
+ }
+
+ /* send init code */
+ err = write_cmds(pinfo->link, pinfo->on_cmds);
+ if (err < 0) {
+ dev_err(panel->dev,
+ "failed to send DCS Init Code: %d\n", err);
+ goto poweroff;
+ }
+
+ pinfo->prepared = true;
+
+ return 0;
+
+poweroff:
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 0);
+ gpiod_set_value_cansleep(pinfo->pp33000_gpio, 0);
+ gpiod_set_value_cansleep(pinfo->pp18000_gpio, 0);
+ return err;
+}
+
+static int panel_enable(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int ret;
+
+ if (pinfo->enabled)
+ return 0;
+
+ ret = backlight_enable(pinfo->backlight);
+ if (ret) {
+ DRM_DEV_ERROR(panel->drm->dev,
+ "Failed to enable backlight %d\n", ret);
+ return ret;
+ }
+
+ pinfo->enabled = true;
+
+ return 0;
+}
+
+static int panel_get_modes(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ struct drm_display_mode *mode;
+
+ if (!pinfo->panel_display_mode) {
+ pr_err("Get panel_display_mode fail!\n");
+ return -1;
+ }
+
+ mode = drm_mode_duplicate(panel->drm, pinfo->panel_display_mode);
+ if (!mode) {
+ pr_err("failed to add mode\n");
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ drm_mode_probed_add(panel->connector, mode);
+
+ panel->connector->display_info.width_mm = pinfo->panel_width_mm;
+ panel->connector->display_info.height_mm = pinfo->panel_height_mm;
+ panel->connector->display_info.bpc = pinfo->per_color_channel;
+
+ return 1;
+}
+
+static const struct drm_panel_funcs panel_funcs = {
+ .disable = panel_disable,
+ .unprepare = panel_unprepare,
+ .prepare = panel_prepare,
+ .enable = panel_enable,
+ .get_modes = panel_get_modes,
+};
+
+static const struct of_device_id panel_of_match[] = {
+ { .compatible = "boe,himax8279d", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, panel_of_match);
+
+static int panel_add(struct panel_info *pinfo)
+{
+ struct device *dev = &pinfo->link->dev;
+ struct device_node *np;
+ int err;
+
+ pinfo->pp33000_gpio = devm_gpiod_get_optional(dev,
+ "pp33000",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(pinfo->pp33000_gpio)) {
+ err = PTR_ERR(pinfo->pp33000_gpio);
+ dev_err(dev, "failed to get pp33000 gpio: %d\n", err);
+ pinfo->pp33000_gpio = NULL;
+ }
+
+ pinfo->pp18000_gpio = devm_gpiod_get_optional(dev,
+ "pp18000",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(pinfo->pp18000_gpio)) {
+ err = PTR_ERR(pinfo->pp18000_gpio);
+ dev_err(dev, "failed to get pp18000 gpio: %d\n", err);
+ pinfo->pp18000_gpio = NULL;
+ }
+
+ pinfo->reset_gpio = devm_gpiod_get_optional(dev, "enable",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(pinfo->reset_gpio)) {
+ err = PTR_ERR(pinfo->reset_gpio);
+ dev_err(dev, "failed to get enable gpio: %d\n", err);
+ pinfo->reset_gpio = NULL;
+ }
+
+ np = of_parse_phandle(dev->of_node, "backlight", 0);
+ if (np) {
+ pinfo->backlight = of_find_backlight_by_node(np);
+ of_node_put(np);
+
+ if (!pinfo->backlight)
+ return -EPROBE_DEFER;
+ }
+
+ drm_panel_init(&pinfo->base);
+ pinfo->base.funcs = &panel_funcs;
+ pinfo->base.dev = &pinfo->link->dev;
+
+ err = drm_panel_add(&pinfo->base);
+ if (err < 0)
+ goto put_backlight;
+
+ return 0;
+
+put_backlight:
+ put_device(&pinfo->backlight->dev);
+
+ return err;
+}
+
+static void panel_del(struct panel_info *pinfo)
+{
+ if (pinfo->base.dev)
+ drm_panel_remove(&pinfo->base);
+
+ put_device(&pinfo->backlight->dev);
+}
+
+static int panel_probe(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo;
+ int err;
+
+ pinfo = devm_kzalloc(&dsi->dev, sizeof(*pinfo), GFP_KERNEL);
+ if (!pinfo)
+ return -ENOMEM;
+
+ pinfo->link = dsi;
+ panel_parse_dt(pinfo);
+ mipi_dsi_set_drvdata(dsi, pinfo);
+
+ err = panel_add(pinfo);
+ if (err < 0)
+ return err;
+
+ return mipi_dsi_attach(dsi);
+}
+
+static int panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
+ int err;
+
+ err = panel_unprepare(&pinfo->base);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
+ err);
+
+ err = panel_disable(&pinfo->base);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
+
+ err = mipi_dsi_detach(dsi);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
+ err);
+
+ drm_panel_detach(&pinfo->base);
+ panel_del(pinfo);
+
+ return 0;
+}
+
+static void panel_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
+
+ panel_unprepare(&pinfo->base);
+ panel_disable(&pinfo->base);
+}
+
+static struct mipi_dsi_driver panel_driver = {
+ .driver = {
+ .name = "panel-innolux-ota7290b",
+ .of_match_table = panel_of_match,
+ },
+ .probe = panel_probe,
+ .remove = panel_remove,
+ .shutdown = panel_shutdown,
+};
+module_mipi_dsi_driver(panel_driver);
+
+MODULE_AUTHOR("Jerry Han <hanxu5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Boe Himax8279d driver");
+MODULE_LICENSE("GPL v2");
--
2.17.1
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