--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, Linaro Limited
+ *
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/backlight.h>
+#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_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct truly_nt35521 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct regulator_bulk_data supplies[2];
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *blen_gpio;
+ bool prepared;
+ bool enabled;
+};
+
+static inline
+struct truly_nt35521 *to_truly_nt35521(struct drm_panel *panel)
+{
+ return container_of(panel, struct truly_nt35521, panel);
+}
+
+#define dsi_generic_write_seq(dsi, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+static void truly_nt35521_reset(struct truly_nt35521 *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(150);
+}
+
+static int truly_nt35521_on(struct truly_nt35521 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00);
+ dsi_generic_write_seq(dsi, 0xff, 0xaa, 0x55, 0xa5, 0x80);
+ dsi_generic_write_seq(dsi, 0x6f, 0x11, 0x00);
+ dsi_generic_write_seq(dsi, 0xf7, 0x20, 0x00);
+ dsi_generic_write_seq(dsi, 0x6f, 0x01);
+ dsi_generic_write_seq(dsi, 0xb1, 0x21);
+ dsi_generic_write_seq(dsi, 0xbd, 0x01, 0xa0, 0x10, 0x08, 0x01);
+ dsi_generic_write_seq(dsi, 0xb8, 0x01, 0x02, 0x0c, 0x02);
+ dsi_generic_write_seq(dsi, 0xbb, 0x11, 0x11);
+ dsi_generic_write_seq(dsi, 0xbc, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xb6, 0x02);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x01);
+ dsi_generic_write_seq(dsi, 0xb0, 0x09, 0x09);
+ dsi_generic_write_seq(dsi, 0xb1, 0x09, 0x09);
+ dsi_generic_write_seq(dsi, 0xbc, 0x8c, 0x00);
+ dsi_generic_write_seq(dsi, 0xbd, 0x8c, 0x00);
+ dsi_generic_write_seq(dsi, 0xca, 0x00);
+ dsi_generic_write_seq(dsi, 0xc0, 0x04);
+ dsi_generic_write_seq(dsi, 0xbe, 0xb5);
+ dsi_generic_write_seq(dsi, 0xb3, 0x35, 0x35);
+ dsi_generic_write_seq(dsi, 0xb4, 0x25, 0x25);
+ dsi_generic_write_seq(dsi, 0xb9, 0x43, 0x43);
+ dsi_generic_write_seq(dsi, 0xba, 0x24, 0x24);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x02);
+ dsi_generic_write_seq(dsi, 0xee, 0x03);
+ dsi_generic_write_seq(dsi, 0xb0,
+ 0x00, 0xb2, 0x00, 0xb3, 0x00, 0xb6, 0x00, 0xc3,
+ 0x00, 0xce, 0x00, 0xe1, 0x00, 0xf3, 0x01, 0x11);
+ dsi_generic_write_seq(dsi, 0xb1,
+ 0x01, 0x2e, 0x01, 0x5c, 0x01, 0x82, 0x01, 0xc3,
+ 0x01, 0xfe, 0x02, 0x00, 0x02, 0x37, 0x02, 0x77);
+ dsi_generic_write_seq(dsi, 0xb2,
+ 0x02, 0xa1, 0x02, 0xd7, 0x02, 0xfe, 0x03, 0x2c,
+ 0x03, 0x4b, 0x03, 0x63, 0x03, 0x8f, 0x03, 0x90);
+ dsi_generic_write_seq(dsi, 0xb3, 0x03, 0x96, 0x03, 0x98);
+ dsi_generic_write_seq(dsi, 0xb4,
+ 0x00, 0x81, 0x00, 0x8b, 0x00, 0x9c, 0x00, 0xa9,
+ 0x00, 0xb5, 0x00, 0xcb, 0x00, 0xdf, 0x01, 0x02);
+ dsi_generic_write_seq(dsi, 0xb5,
+ 0x01, 0x1f, 0x01, 0x51, 0x01, 0x7a, 0x01, 0xbf,
+ 0x01, 0xfa, 0x01, 0xfc, 0x02, 0x34, 0x02, 0x76);
+ dsi_generic_write_seq(dsi, 0xb6,
+ 0x02, 0x9f, 0x02, 0xd7, 0x02, 0xfc, 0x03, 0x2c,
+ 0x03, 0x4a, 0x03, 0x63, 0x03, 0x8f, 0x03, 0xa2);
+ dsi_generic_write_seq(dsi, 0xb7, 0x03, 0xb8, 0x03, 0xba);
+ dsi_generic_write_seq(dsi, 0xb8,
+ 0x00, 0x01, 0x00, 0x02, 0x00, 0x0e, 0x00, 0x2a,
+ 0x00, 0x41, 0x00, 0x67, 0x00, 0x87, 0x00, 0xb9);
+ dsi_generic_write_seq(dsi, 0xb9,
+ 0x00, 0xe2, 0x01, 0x22, 0x01, 0x54, 0x01, 0xa3,
+ 0x01, 0xe6, 0x01, 0xe7, 0x02, 0x24, 0x02, 0x67);
+ dsi_generic_write_seq(dsi, 0xba,
+ 0x02, 0x93, 0x02, 0xcd, 0x02, 0xf6, 0x03, 0x31,
+ 0x03, 0x6c, 0x03, 0xe9, 0x03, 0xef, 0x03, 0xf4);
+ dsi_generic_write_seq(dsi, 0xbb, 0x03, 0xf6, 0x03, 0xf7);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x03);
+ dsi_generic_write_seq(dsi, 0xb0, 0x22, 0x00);
+ dsi_generic_write_seq(dsi, 0xb1, 0x22, 0x00);
+ dsi_generic_write_seq(dsi, 0xb2, 0x05, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xb3, 0x05, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xb4, 0x05, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xb5, 0x05, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xba, 0x53, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xbb, 0x53, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xbc, 0x53, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xbd, 0x53, 0x00, 0x60, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xc0, 0x00, 0x34, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xc1, 0x00, 0x00, 0x34, 0x00);
+ dsi_generic_write_seq(dsi, 0xc2, 0x00, 0x00, 0x34, 0x00);
+ dsi_generic_write_seq(dsi, 0xc3, 0x00, 0x00, 0x34, 0x00);
+ dsi_generic_write_seq(dsi, 0xc4, 0x60);
+ dsi_generic_write_seq(dsi, 0xc5, 0xc0);
+ dsi_generic_write_seq(dsi, 0xc6, 0x00);
+ dsi_generic_write_seq(dsi, 0xc7, 0x00);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x05);
+ dsi_generic_write_seq(dsi, 0xb0, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb1, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb2, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb3, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb4, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb5, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb6, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb7, 0x17, 0x06);
+ dsi_generic_write_seq(dsi, 0xb8, 0x00);
+ dsi_generic_write_seq(dsi, 0xb9, 0x00, 0x03);
+ dsi_generic_write_seq(dsi, 0xba, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xbb, 0x02, 0x03);
+ dsi_generic_write_seq(dsi, 0xbc, 0x02, 0x03);
+ dsi_generic_write_seq(dsi, 0xbd, 0x03, 0x03, 0x00, 0x03, 0x03);
+ dsi_generic_write_seq(dsi, 0xc0, 0x0b);
+ dsi_generic_write_seq(dsi, 0xc1, 0x09);
+ dsi_generic_write_seq(dsi, 0xc2, 0xa6);
+ dsi_generic_write_seq(dsi, 0xc3, 0x05);
+ dsi_generic_write_seq(dsi, 0xc4, 0x00);
+ dsi_generic_write_seq(dsi, 0xc5, 0x02);
+ dsi_generic_write_seq(dsi, 0xc6, 0x22);
+ dsi_generic_write_seq(dsi, 0xc7, 0x03);
+ dsi_generic_write_seq(dsi, 0xc8, 0x07, 0x20);
+ dsi_generic_write_seq(dsi, 0xc9, 0x03, 0x20);
+ dsi_generic_write_seq(dsi, 0xca, 0x01, 0x60);
+ dsi_generic_write_seq(dsi, 0xcb, 0x01, 0x60);
+ dsi_generic_write_seq(dsi, 0xcc, 0x00, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xcd, 0x00, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xce, 0x00, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xcf, 0x00, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xd1, 0x00, 0x05, 0x01, 0x07, 0x10);
+ dsi_generic_write_seq(dsi, 0xd2, 0x10, 0x05, 0x05, 0x03, 0x10);
+ dsi_generic_write_seq(dsi, 0xd3, 0x20, 0x00, 0x43, 0x07, 0x10);
+ dsi_generic_write_seq(dsi, 0xd4, 0x30, 0x00, 0x43, 0x07, 0x10);
+ dsi_generic_write_seq(dsi, 0xd0,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xd5,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xd6,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xd7,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xe5, 0x06);
+ dsi_generic_write_seq(dsi, 0xe6, 0x06);
+ dsi_generic_write_seq(dsi, 0xe7, 0x00);
+ dsi_generic_write_seq(dsi, 0xe8, 0x06);
+ dsi_generic_write_seq(dsi, 0xe9, 0x06);
+ dsi_generic_write_seq(dsi, 0xea, 0x06);
+ dsi_generic_write_seq(dsi, 0xeb, 0x00);
+ dsi_generic_write_seq(dsi, 0xec, 0x00);
+ dsi_generic_write_seq(dsi, 0xed, 0x30);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x06);
+ dsi_generic_write_seq(dsi, 0xb0, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xb1, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xb2, 0x2d, 0x2e);
+ dsi_generic_write_seq(dsi, 0xb3, 0x31, 0x34);
+ dsi_generic_write_seq(dsi, 0xb4, 0x29, 0x2a);
+ dsi_generic_write_seq(dsi, 0xb5, 0x12, 0x10);
+ dsi_generic_write_seq(dsi, 0xb6, 0x18, 0x16);
+ dsi_generic_write_seq(dsi, 0xb7, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xb8, 0x08, 0x31);
+ dsi_generic_write_seq(dsi, 0xb9, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xba, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xbb, 0x31, 0x08);
+ dsi_generic_write_seq(dsi, 0xbc, 0x03, 0x01);
+ dsi_generic_write_seq(dsi, 0xbd, 0x17, 0x19);
+ dsi_generic_write_seq(dsi, 0xbe, 0x11, 0x13);
+ dsi_generic_write_seq(dsi, 0xbf, 0x2a, 0x29);
+ dsi_generic_write_seq(dsi, 0xc0, 0x34, 0x31);
+ dsi_generic_write_seq(dsi, 0xc1, 0x2e, 0x2d);
+ dsi_generic_write_seq(dsi, 0xc2, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xc3, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xc4, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xc5, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xc6, 0x2e, 0x2d);
+ dsi_generic_write_seq(dsi, 0xc7, 0x31, 0x34);
+ dsi_generic_write_seq(dsi, 0xc8, 0x29, 0x2a);
+ dsi_generic_write_seq(dsi, 0xc9, 0x17, 0x19);
+ dsi_generic_write_seq(dsi, 0xca, 0x11, 0x13);
+ dsi_generic_write_seq(dsi, 0xcb, 0x03, 0x01);
+ dsi_generic_write_seq(dsi, 0xcc, 0x08, 0x31);
+ dsi_generic_write_seq(dsi, 0xcd, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xce, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xcf, 0x31, 0x08);
+ dsi_generic_write_seq(dsi, 0xd0, 0x00, 0x02);
+ dsi_generic_write_seq(dsi, 0xd1, 0x12, 0x10);
+ dsi_generic_write_seq(dsi, 0xd2, 0x18, 0x16);
+ dsi_generic_write_seq(dsi, 0xd3, 0x2a, 0x29);
+ dsi_generic_write_seq(dsi, 0xd4, 0x34, 0x31);
+ dsi_generic_write_seq(dsi, 0xd5, 0x2d, 0x2e);
+ dsi_generic_write_seq(dsi, 0xd6, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xd7, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xe5, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xe6, 0x31, 0x31);
+ dsi_generic_write_seq(dsi, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xd9, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xe7, 0x00);
+ dsi_generic_write_seq(dsi, 0x6f, 0x02);
+ dsi_generic_write_seq(dsi, 0xf7, 0x47);
+ dsi_generic_write_seq(dsi, 0x6f, 0x0a);
+ dsi_generic_write_seq(dsi, 0xf7, 0x02);
+ dsi_generic_write_seq(dsi, 0x6f, 0x17);
+ dsi_generic_write_seq(dsi, 0xf4, 0x60);
+ dsi_generic_write_seq(dsi, 0x6f, 0x01);
+ dsi_generic_write_seq(dsi, 0xf9, 0x46);
+ dsi_generic_write_seq(dsi, 0x6f, 0x11);
+ dsi_generic_write_seq(dsi, 0xf3, 0x01);
+ dsi_generic_write_seq(dsi, 0x35, 0x00);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00);
+ dsi_generic_write_seq(dsi, 0xd9, 0x02, 0x03, 0x00);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00);
+ dsi_generic_write_seq(dsi, 0xb1, 0x6c, 0x21);
+ dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x00, 0x00);
+ dsi_generic_write_seq(dsi, 0x35, 0x00);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+ usleep_range(1000, 2000);
+
+ dsi_generic_write_seq(dsi, 0x53, 0x24);
+
+ return 0;
+}
+
+static int truly_nt35521_off(struct truly_nt35521 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display off: %d\n", ret);
+ return ret;
+ }
+ msleep(50);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(150);
+
+ return 0;
+}
+
+static int truly_nt35521_prepare(struct drm_panel *panel)
+{
+ struct truly_nt35521 *ctx = to_truly_nt35521(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ truly_nt35521_reset(ctx);
+
+ ret = truly_nt35521_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ return ret;
+ }
+
+ ctx->prepared = true;
+ return 0;
+}
+
+static int truly_nt35521_unprepare(struct drm_panel *panel)
+{
+ struct truly_nt35521 *ctx = to_truly_nt35521(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = truly_nt35521_off(ctx);
+ if (ret < 0)
+ dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+
+ ctx->prepared = false;
+ return 0;
+}
+
+static int truly_nt35521_enable(struct drm_panel *panel)
+{
+ struct truly_nt35521 *ctx = to_truly_nt35521(panel);
+
+ if (ctx->enabled)
+ return 0;
+
+ gpiod_set_value_cansleep(ctx->blen_gpio, 1);
+
+ ctx->enabled = true;
+ return 0;
+}
+
+static int truly_nt35521_disable(struct drm_panel *panel)
+{
+ struct truly_nt35521 *ctx = to_truly_nt35521(panel);
+
+ if (!ctx->enabled)
+ return 0;
+
+ gpiod_set_value_cansleep(ctx->blen_gpio, 0);
+
+ ctx->enabled = false;
+ return 0;
+}
+
+static const struct drm_display_mode truly_nt35521_mode = {
+ .clock = (720 + 232 + 20 + 112) * (1280 + 18 + 1 + 18) * 60 / 1000,
+ .hdisplay = 720,
+ .hsync_start = 720 + 232,
+ .hsync_end = 720 + 232 + 20,
+ .htotal = 720 + 232 + 20 + 112,
+ .vdisplay = 1280,
+ .vsync_start = 1280 + 18,
+ .vsync_end = 1280 + 18 + 1,
+ .vtotal = 1280 + 18 + 1 + 18,
+ .width_mm = 65,
+ .height_mm = 116,
+};
+
+static int truly_nt35521_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &truly_nt35521_mode);
+ if (!mode)
+ return -ENOMEM;
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs truly_nt35521_panel_funcs = {
+ .prepare = truly_nt35521_prepare,
+ .unprepare = truly_nt35521_unprepare,
+ .enable = truly_nt35521_enable,
+ .disable = truly_nt35521_disable,
+ .get_modes = truly_nt35521_get_modes,
+};
+
+static int truly_nt35521_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = backlight_get_brightness(bl);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int truly_nt35521_bl_get_brightness(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness;
+ int ret;
+
+ ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+ if (ret < 0)
+ return ret;
+
+ return brightness & 0xff;
+}
+
+static const struct backlight_ops truly_nt35521_bl_ops = {
+ .update_status = truly_nt35521_bl_update_status,
+ .get_brightness = truly_nt35521_bl_get_brightness,
+};
+
+static struct backlight_device *
+truly_nt35521_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 255,
+ .max_brightness = 255,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &truly_nt35521_bl_ops, &props);
+}
+
+static int truly_nt35521_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct truly_nt35521 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "positive5";
+ ctx->supplies[1].supply = "negative5";
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to get regulators: %d\n", ret);
+ return ret;
+ }
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->blen_gpio = devm_gpiod_get(dev, "backlight", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->blen_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->blen_gpio),
+ "Failed to get backlight-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ drm_panel_init(&ctx->panel, dev, &truly_nt35521_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->panel.backlight = truly_nt35521_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int truly_nt35521_remove(struct mipi_dsi_device *dsi)
+{
+ struct truly_nt35521 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&ctx->panel);
+
+ return 0;
+}
+
+static const struct of_device_id truly_nt35521_of_match[] = {
+ { .compatible = "sony,tulip-truly-nt35521" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, truly_nt35521_of_match);
+
+static struct mipi_dsi_driver truly_nt35521_driver = {
+ .probe = truly_nt35521_probe,
+ .remove = truly_nt35521_remove,
+ .driver = {
+ .name = "panel-truly-nt35521",
+ .of_match_table = truly_nt35521_of_match,
+ },
+};
+module_mipi_dsi_driver(truly_nt35521_driver);
+
+MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
+MODULE_DESCRIPTION("DRM driver for Sony Tulip Truly NT35521 panel");
+MODULE_LICENSE("GPL v2");
projects / linux-block.git / commitdiff