Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/panel: Add driver for BOE RM692E5 AMOLED panel
Add support for the 2700x1224 AMOLED BOE panel bundled with a RM692E5
driver IC, as found on the Fairphone 5 smartphone.
Co-developed-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230927-topic-fp5_disp-v2-2-7b5e1d1662a6@linaro.org
authored by
Konrad Dybcio
and committed by
Neil Armstrong
988d0ff2
d1fd19e6
+433
+9
drivers/gpu/drm/panel/Kconfig
+9
drivers/gpu/drm/panel/Kconfig
···
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Say Y here if you want to enable support for Raydium RM68200
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720x1280 DSI video mode panel.
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518
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+
config DRM_PANEL_RAYDIUM_RM692E5
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tristate "Raydium RM692E5-based DSI 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 Raydium RM692E5-based
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+
display panels, such as the one found in the Fairphone 5 smartphone.
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+
519
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config DRM_PANEL_RONBO_RB070D30
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tristate "Ronbo Electronics RB070D30 panel"
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530
depends on OF
+1
drivers/gpu/drm/panel/Makefile
+1
drivers/gpu/drm/panel/Makefile
···
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obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
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+
obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o
52
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obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
+423
drivers/gpu/drm/panel/panel-raydium-rm692e5.c
+423
drivers/gpu/drm/panel/panel-raydium-rm692e5.c
···
1
+
// SPDX-License-Identifier: GPL-2.0-only
2
+
/*
3
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
4
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* Copyright (c) 2023 Linaro Limited
5
+
*/
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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>
12
+
#include <linux/regulator/consumer.h>
13
+
14
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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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+
#include <drm/drm_mipi_dsi.h>
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+
#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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+
20
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struct rm692e5_panel {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct drm_dsc_config dsc;
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struct regulator_bulk_data supplies[3];
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struct gpio_desc *reset_gpio;
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bool prepared;
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};
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+
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static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct rm692e5_panel, panel);
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}
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+
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static void rm692e5_reset(struct rm692e5_panel *ctx)
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+
{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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}
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+
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static int rm692e5_on(struct rm692e5_panel *ctx)
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+
{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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+
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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+
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mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41);
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+
mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00);
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+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16);
55
+
mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87);
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+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71);
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+
mipi_dsi_generic_write_seq(dsi, 0x82, 0x01);
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+
mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00);
59
+
mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c);
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+
mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64);
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+
mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c);
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mipi_dsi_generic_write_seq(dsi, 0xca, 0x80);
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+
mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02);
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+
mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02);
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+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
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+
mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
67
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
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+
mipi_dsi_generic_write_seq(dsi, 0x00, 0xff);
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+
mipi_dsi_generic_write_seq(dsi, 0x01, 0xff);
70
+
mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf);
71
+
mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc);
72
+
mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9);
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+
mipi_dsi_generic_write_seq(dsi, 0x05, 0x99);
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+
mipi_dsi_generic_write_seq(dsi, 0x06, 0x02);
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+
mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a);
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+
mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0);
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+
mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c);
78
+
mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb);
79
+
mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8);
80
+
mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32);
81
+
mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07);
82
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
83
+
mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0);
84
+
mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff);
85
+
mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff);
86
+
mipi_dsi_generic_write_seq(dsi, 0x10, 0x33);
87
+
mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f);
88
+
mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e);
89
+
mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6);
90
+
mipi_dsi_generic_write_seq(dsi, 0x14, 0x80);
91
+
mipi_dsi_generic_write_seq(dsi, 0x15, 0x02);
92
+
mipi_dsi_generic_write_seq(dsi, 0x16, 0x38);
93
+
mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3);
94
+
mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a);
95
+
mipi_dsi_generic_write_seq(dsi, 0x19, 0xba);
96
+
mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc);
97
+
mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01);
98
+
99
+
ret = mipi_dsi_dcs_nop(dsi);
100
+
if (ret < 0) {
101
+
dev_err(dev, "Failed to nop: %d\n", ret);
102
+
return ret;
103
+
}
104
+
msleep(32);
105
+
106
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
107
+
mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
108
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1);
109
+
mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00);
110
+
mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00);
111
+
mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00);
112
+
mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00);
113
+
mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01);
114
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9);
115
+
mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf);
116
+
mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37);
117
+
mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b);
118
+
mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
119
+
mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01);
120
+
mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08);
121
+
mipi_dsi_generic_write_seq(dsi, 0x35, 0x00);
122
+
mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42);
123
+
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
125
+
if (ret < 0) {
126
+
dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
127
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return ret;
128
+
}
129
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msleep(100);
130
+
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ret = mipi_dsi_dcs_set_display_on(dsi);
132
+
if (ret < 0) {
133
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dev_err(dev, "Failed to set display on: %d\n", ret);
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return ret;
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}
136
+
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return 0;
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+
}
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+
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static int rm692e5_disable(struct drm_panel *panel)
141
+
{
142
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struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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+
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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+
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mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
150
+
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display off: %d\n", ret);
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return ret;
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}
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+
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
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return ret;
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}
162
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msleep(100);
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+
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return 0;
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}
166
+
167
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static int rm692e5_prepare(struct drm_panel *panel)
168
+
{
169
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struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
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struct drm_dsc_picture_parameter_set pps;
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struct device *dev = &ctx->dsi->dev;
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int ret;
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+
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if (ctx->prepared)
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return 0;
176
+
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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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dev_err(dev, "Failed to enable regulators: %d\n", ret);
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return ret;
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}
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rm692e5_reset(ctx);
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+
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ret = rm692e5_on(ctx);
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if (ret < 0) {
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dev_err(dev, "Failed to initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(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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+
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drm_dsc_pps_payload_pack(&pps, &ctx->dsc);
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+
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ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps);
196
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if (ret < 0) {
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dev_err(panel->dev, "failed to transmit PPS: %d\n", ret);
198
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return ret;
199
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}
200
+
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ret = mipi_dsi_compression_mode(ctx->dsi, true);
202
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if (ret < 0) {
203
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dev_err(dev, "failed to enable compression mode: %d\n", ret);
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return ret;
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}
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+
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msleep(28);
208
+
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mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40);
210
+
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/* 0x05 -> 90Hz, 0x00 -> 60Hz */
212
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mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05);
213
+
214
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mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00);
215
+
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ctx->prepared = true;
217
+
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return 0;
219
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}
220
+
221
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static int rm692e5_unprepare(struct drm_panel *panel)
222
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{
223
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struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
224
+
225
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if (!ctx->prepared)
226
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return 0;
227
+
228
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
229
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regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
230
+
231
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ctx->prepared = false;
232
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return 0;
233
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}
234
+
235
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static const struct drm_display_mode rm692e5_mode = {
236
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.clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000,
237
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.hdisplay = 1224,
238
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.hsync_start = 1224 + 32,
239
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.hsync_end = 1224 + 32 + 8,
240
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.htotal = 1224 + 32 + 8 + 8,
241
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.vdisplay = 2700,
242
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.vsync_start = 2700 + 8,
243
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.vsync_end = 2700 + 8 + 2,
244
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.vtotal = 2700 + 8 + 2 + 8,
245
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.width_mm = 68,
246
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.height_mm = 150,
247
+
};
248
+
249
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static int rm692e5_get_modes(struct drm_panel *panel,
250
+
struct drm_connector *connector)
251
+
{
252
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struct drm_display_mode *mode;
253
+
254
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mode = drm_mode_duplicate(connector->dev, &rm692e5_mode);
255
+
if (!mode)
256
+
return -ENOMEM;
257
+
258
+
drm_mode_set_name(mode);
259
+
260
+
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
261
+
connector->display_info.width_mm = mode->width_mm;
262
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connector->display_info.height_mm = mode->height_mm;
263
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drm_mode_probed_add(connector, mode);
264
+
265
+
return 1;
266
+
}
267
+
268
+
static const struct drm_panel_funcs rm692e5_panel_funcs = {
269
+
.prepare = rm692e5_prepare,
270
+
.unprepare = rm692e5_unprepare,
271
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.disable = rm692e5_disable,
272
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.get_modes = rm692e5_get_modes,
273
+
};
274
+
275
+
static int rm692e5_bl_update_status(struct backlight_device *bl)
276
+
{
277
+
struct mipi_dsi_device *dsi = bl_get_data(bl);
278
+
u16 brightness = backlight_get_brightness(bl);
279
+
int ret;
280
+
281
+
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
282
+
283
+
ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
284
+
if (ret < 0)
285
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return ret;
286
+
287
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
288
+
289
+
return 0;
290
+
}
291
+
292
+
static int rm692e5_bl_get_brightness(struct backlight_device *bl)
293
+
{
294
+
struct mipi_dsi_device *dsi = bl_get_data(bl);
295
+
u16 brightness;
296
+
int ret;
297
+
298
+
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
299
+
300
+
ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);
301
+
if (ret < 0)
302
+
return ret;
303
+
304
+
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
305
+
306
+
return brightness;
307
+
}
308
+
309
+
static const struct backlight_ops rm692e5_bl_ops = {
310
+
.update_status = rm692e5_bl_update_status,
311
+
.get_brightness = rm692e5_bl_get_brightness,
312
+
};
313
+
314
+
static struct backlight_device *
315
+
rm692e5_create_backlight(struct mipi_dsi_device *dsi)
316
+
{
317
+
struct device *dev = &dsi->dev;
318
+
const struct backlight_properties props = {
319
+
.type = BACKLIGHT_RAW,
320
+
.brightness = 4095,
321
+
.max_brightness = 4095,
322
+
};
323
+
324
+
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
325
+
&rm692e5_bl_ops, &props);
326
+
}
327
+
328
+
static int rm692e5_probe(struct mipi_dsi_device *dsi)
329
+
{
330
+
struct device *dev = &dsi->dev;
331
+
struct rm692e5_panel *ctx;
332
+
int ret;
333
+
334
+
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
335
+
if (!ctx)
336
+
return -ENOMEM;
337
+
338
+
ctx->supplies[0].supply = "vddio";
339
+
ctx->supplies[1].supply = "dvdd";
340
+
ctx->supplies[2].supply = "vci";
341
+
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
342
+
ctx->supplies);
343
+
if (ret < 0)
344
+
return dev_err_probe(dev, ret, "Failed to get regulators\n");
345
+
346
+
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
347
+
if (IS_ERR(ctx->reset_gpio))
348
+
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
349
+
"Failed to get reset-gpios\n");
350
+
351
+
ctx->dsi = dsi;
352
+
mipi_dsi_set_drvdata(dsi, ctx);
353
+
354
+
dsi->lanes = 4;
355
+
dsi->format = MIPI_DSI_FMT_RGB888;
356
+
dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET |
357
+
MIPI_DSI_CLOCK_NON_CONTINUOUS;
358
+
359
+
drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs,
360
+
DRM_MODE_CONNECTOR_DSI);
361
+
ctx->panel.prepare_prev_first = true;
362
+
363
+
ctx->panel.backlight = rm692e5_create_backlight(dsi);
364
+
if (IS_ERR(ctx->panel.backlight))
365
+
return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
366
+
"Failed to create backlight\n");
367
+
368
+
drm_panel_add(&ctx->panel);
369
+
370
+
/* This panel only supports DSC; unconditionally enable it */
371
+
dsi->dsc = &ctx->dsc;
372
+
373
+
/* TODO: Pass slice_per_pkt = 2 */
374
+
ctx->dsc.dsc_version_major = 1;
375
+
ctx->dsc.dsc_version_minor = 1;
376
+
ctx->dsc.slice_height = 60;
377
+
ctx->dsc.slice_width = 1224;
378
+
379
+
ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width;
380
+
ctx->dsc.bits_per_component = 8;
381
+
ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */
382
+
ctx->dsc.block_pred_enable = true;
383
+
384
+
ret = mipi_dsi_attach(dsi);
385
+
if (ret < 0) {
386
+
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
387
+
drm_panel_remove(&ctx->panel);
388
+
return ret;
389
+
}
390
+
391
+
return 0;
392
+
}
393
+
394
+
static void rm692e5_remove(struct mipi_dsi_device *dsi)
395
+
{
396
+
struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi);
397
+
int ret;
398
+
399
+
ret = mipi_dsi_detach(dsi);
400
+
if (ret < 0)
401
+
dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
402
+
403
+
drm_panel_remove(&ctx->panel);
404
+
}
405
+
406
+
static const struct of_device_id rm692e5_of_match[] = {
407
+
{ .compatible = "fairphone,fp5-rm692e5-boe" },
408
+
{ }
409
+
};
410
+
MODULE_DEVICE_TABLE(of, rm692e5_of_match);
411
+
412
+
static struct mipi_dsi_driver rm692e5_driver = {
413
+
.probe = rm692e5_probe,
414
+
.remove = rm692e5_remove,
415
+
.driver = {
416
+
.name = "panel-rm692e5-boe-amoled",
417
+
.of_match_table = rm692e5_of_match,
418
+
},
419
+
};
420
+
module_mipi_dsi_driver(rm692e5_driver);
421
+
422
+
MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels");
423
+
MODULE_LICENSE("GPL");