Hi Harigovindan
On Wed, Apr 29, 2020 at 11:15:14AM +0530, Harigovindan P wrote:
> Add support for Visionox panel driver.
>
> Signed-off-by: Harigovindan P <harigovi at codeaurora.org>
> Reviewed-by: Matthias Kaehlcke <mka at chromium.org>
Thanks for your persistence on this.
Patch applied.
I fixed a few lingering --strict releated checkpatch warnings
when I applied.
Sam
> ---
>
> Changes in v2:
> - Dropping redundant space in Kconfig(Sam Ravnborg).
> - Changing structure for include files(Sam Ravnborg).
> - Removing backlight related code and functions(Sam Ravnborg).
> - Removing repeated printing of error message(Sam Ravnborg).
> - Adding drm_connector as an argument for get_modes function.
> Changes in v3:
> - Adding arguments for drm_panel_init to support against mainline.
> Changes in v4:
> - Removing error messages from regulator_set_load.
> - Removing dev struct entry.
> - Removing checks.
> - Dropping empty comment lines.
> Changes in v5:
> - Removing unused struct member variables.
> - Removing blank lines.
> - Fixed indentation.
> - Invoking dsi_detach and panel_remove while early exiting from probe.
> Changes in v6:
> - Changed "35597" to "rm69299" for power_on function.
> - Removing rm69299_config since it supports single type of panel for now.
> - Fixed alignment.
> - Using goto statements when regulator_set_load fails.
> Changes in v7:
> - Added new goto statement when regulator_set_load fails.
> Changes in v8,v9,v10:
> - Had changes in first patch, did not make any change in panel driver.
> Changes in v11:
> - Fixing checkpatch script errors.
> - Updated assignment of panel.dev property in probe.
>
> drivers/gpu/drm/panel/Kconfig | 8 +
> drivers/gpu/drm/panel/Makefile | 1 +
> .../gpu/drm/panel/panel-visionox-rm69299.c | 304 ++++++++++++++++++
> 3 files changed, 313 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-visionox-rm69299.c
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index d56258b9fcaf..4b6131f5893d 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -444,6 +444,14 @@ config DRM_PANEL_TRULY_NT35597_WQXGA
> Say Y here if you want to enable support for Truly NT35597 WQXGA Dual DSI
> Video Mode panel
>
> +config DRM_PANEL_VISIONOX_RM69299
> + tristate "Visionox RM69299"
> + depends on OF
> + depends on DRM_MIPI_DSI
> + help
> + Say Y here if you want to enable support for Visionox
> + RM69299 DSI Video Mode panel.
> +
> config DRM_PANEL_XINPENG_XPP055C272
> tristate "Xinpeng XPP055C272 panel driver"
> depends on OF
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 2335a1e32ae0..8eac3e6fa82c 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -47,4 +47,5 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
> obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
> obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
> obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
> +obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
> obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
> diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
> new file mode 100644
> index 000000000000..3ef4cc80044a
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
> @@ -0,0 +1,304 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019, The Linux Foundation. All rights reserved.
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <video/mipi_display.h>
> +
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_modes.h>
> +#include <drm/drm_panel.h>
> +#include <drm/drm_print.h>
> +
> +struct visionox_rm69299 {
> + struct drm_panel panel;
> + struct regulator_bulk_data supplies[2];
> + struct gpio_desc *reset_gpio;
> + struct mipi_dsi_device *dsi;
> + bool prepared;
> + bool enabled;
> +};
> +
> +static inline struct visionox_rm69299 *panel_to_ctx(struct drm_panel *panel)
> +{
> + return container_of(panel, struct visionox_rm69299, panel);
> +}
> +
> +static int visionox_rm69299_power_on(struct visionox_rm69299 *ctx)
> +{
> + int ret;
> +
> + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> + if (ret < 0)
> + return ret;
> +
> + /*
> + * Reset sequence of visionox panel requires the panel to be
> + * out of reset for 10ms, followed by being held in reset
> + * for 10ms and then out again
> + */
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(10000, 20000);
> + gpiod_set_value(ctx->reset_gpio, 0);
> + usleep_range(10000, 20000);
> + gpiod_set_value(ctx->reset_gpio, 1);
> + usleep_range(10000, 20000);
> +
> + return 0;
> +}
> +
> +static int visionox_rm69299_power_off(struct visionox_rm69299 *ctx)
> +{
> + gpiod_set_value(ctx->reset_gpio, 0);
> +
> + return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +}
> +
> +static int visionox_rm69299_unprepare(struct drm_panel *panel)
> +{
> + struct visionox_rm69299 *ctx = panel_to_ctx(panel);
> + int ret;
> +
> + ctx->dsi->mode_flags = 0;
> +
> + ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_OFF, NULL, 0);
> + if (ret < 0)
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "set_display_off cmd failed ret = %d\n", ret);
> +
> + /* 120ms delay required here as per DCS spec */
> + msleep(120);
> +
> + ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_ENTER_SLEEP_MODE, NULL, 0);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "enter_sleep cmd failed ret = %d\n", ret);
> + }
> +
> + ret = visionox_rm69299_power_off(ctx);
> +
> + ctx->prepared = false;
> + return ret;
> +}
> +
> +static int visionox_rm69299_prepare(struct drm_panel *panel)
> +{
> + struct visionox_rm69299 *ctx = panel_to_ctx(panel);
> + int ret;
> +
> + if (ctx->prepared)
> + return 0;
> +
> + ret = visionox_rm69299_power_on(ctx);
> + if (ret < 0)
> + return ret;
> +
> + ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
> +
> + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0xfe, 0x00 }, 2);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "cmd set tx 0 failed, ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0xc2, 0x08 }, 2);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "cmd set tx 1 failed, ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0x35, 0x00 }, 2);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "cmd set tx 2 failed, ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]){ 0x51, 0xff }, 2);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "cmd set tx 3 failed, ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_EXIT_SLEEP_MODE, NULL, 0);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "exit_sleep_mode cmd failed ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + /* Per DSI spec wait 120ms after sending exit sleep DCS command */
> + msleep(120);
> +
> + ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_ON, NULL, 0);
> + if (ret < 0) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "set_display_on cmd failed ret = %d\n", ret);
> + goto power_off;
> + }
> +
> + /* Per DSI spec wait 120ms after sending set_display_on DCS command */
> + msleep(120);
> +
> + ctx->prepared = true;
> +
> + return 0;
> +
> +power_off:
> + return ret;
> +}
> +
> +static const struct drm_display_mode visionox_rm69299_1080x2248_60hz = {
> + .name = "1080x2248",
> + .clock = 158695,
> + .hdisplay = 1080,
> + .hsync_start = 1080 + 26,
> + .hsync_end = 1080 + 26 + 2,
> + .htotal = 1080 + 26 + 2 + 36,
> + .vdisplay = 2248,
> + .vsync_start = 2248 + 56,
> + .vsync_end = 2248 + 56 + 4,
> + .vtotal = 2248 + 56 + 4 + 4,
> + .vrefresh = 60,
> + .flags = 0,
> +};
> +
> +static int visionox_rm69299_get_modes(struct drm_panel *panel,
> + struct drm_connector *connector)
> +{
> + struct visionox_rm69299 *ctx = panel_to_ctx(panel);
> + struct drm_display_mode *mode;
> +
> + mode = drm_mode_create(connector->dev);
> + if (!mode) {
> + DRM_DEV_ERROR(ctx->panel.dev,
> + "failed to create a new display mode\n");
> + return 0;
> + }
> +
> + connector->display_info.width_mm = 74;
> + connector->display_info.height_mm = 131;
> + drm_mode_copy(mode, &visionox_rm69299_1080x2248_60hz);
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + drm_mode_probed_add(connector, mode);
> +
> + return 1;
> +}
> +
> +static const struct drm_panel_funcs visionox_rm69299_drm_funcs = {
> + .unprepare = visionox_rm69299_unprepare,
> + .prepare = visionox_rm69299_prepare,
> + .get_modes = visionox_rm69299_get_modes,
> +};
> +
> +static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
> +{
> + struct device *dev = &dsi->dev;
> + struct visionox_rm69299 *ctx;
> + int ret;
> +
> + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + mipi_dsi_set_drvdata(dsi, ctx);
> +
> + ctx->panel.dev = dev;
> + ctx->dsi = dsi;
> +
> + ctx->supplies[0].supply = "vdda";
> + ctx->supplies[1].supply = "vdd3p3";
> +
> + ret = devm_regulator_bulk_get(ctx->panel.dev, ARRAY_SIZE(ctx->supplies),
> + ctx->supplies);
> + if (ret < 0)
> + return ret;
> +
> + ctx->reset_gpio = devm_gpiod_get(ctx->panel.dev,
> + "reset", GPIOD_OUT_LOW);
> + if (IS_ERR(ctx->reset_gpio)) {
> + DRM_DEV_ERROR(dev, "cannot get reset gpio %ld\n",
> + PTR_ERR(ctx->reset_gpio));
> + return PTR_ERR(ctx->reset_gpio);
> + }
> +
> + drm_panel_init(&ctx->panel, dev, &visionox_rm69299_drm_funcs,
> + DRM_MODE_CONNECTOR_DSI);
> + ctx->panel.dev = dev;
> + ctx->panel.funcs = &visionox_rm69299_drm_funcs;
> + drm_panel_add(&ctx->panel);
> +
> + dsi->lanes = 4;
> + dsi->format = MIPI_DSI_FMT_RGB888;
> + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM |
> + MIPI_DSI_CLOCK_NON_CONTINUOUS;
> + ret = mipi_dsi_attach(dsi);
> + if (ret < 0) {
> + DRM_DEV_ERROR(dev, "dsi attach failed ret = %d\n", ret);
> + goto err_dsi_attach;
> + }
> +
> + ret = regulator_set_load(ctx->supplies[0].consumer, 32000);
> + if (ret) {
> + DRM_DEV_ERROR(dev,
> + "regulator set load failed for vdda supply ret = %d\n",
> + ret);
> + goto err_set_load;
> + }
> +
> + ret = regulator_set_load(ctx->supplies[1].consumer, 13200);
> + if (ret) {
> + DRM_DEV_ERROR(dev,
> + "regulator set load failed for vdd3p3 supply ret = %d\n",
> + ret);
> + goto err_set_load;
> + }
> +
> + return 0;
> +
> +err_set_load:
> + mipi_dsi_detach(dsi);
> +err_dsi_attach:
> + drm_panel_remove(&ctx->panel);
> + return ret;
> +}
> +
> +static int visionox_rm69299_remove(struct mipi_dsi_device *dsi)
> +{
> + struct visionox_rm69299 *ctx = mipi_dsi_get_drvdata(dsi);
> +
> + mipi_dsi_detach(ctx->dsi);
> + mipi_dsi_device_unregister(ctx->dsi);
> +
> + drm_panel_remove(&ctx->panel);
> + return 0;
> +}
> +
> +static const struct of_device_id visionox_rm69299_of_match[] = {
> + {
> + .compatible = "visionox,rm69299-1080p-display",
> + }
> +};
> +MODULE_DEVICE_TABLE(of, visionox_rm69299_of_match);
> +
> +static struct mipi_dsi_driver visionox_rm69299_driver = {
> + .driver = {
> + .name = "panel-visionox-rm69299",
> + .of_match_table = visionox_rm69299_of_match,
> + },
> + .probe = visionox_rm69299_probe,
> + .remove = visionox_rm69299_remove,
> +};
> +module_mipi_dsi_driver(visionox_rm69299_driver);
> +
> +MODULE_DESCRIPTION("Visionox RM69299 DSI Panel Driver");
> +
> --
> 2.25.1
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