diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c new file mode 100644 index 0000000000..8670386498 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c @@ -0,0 +1,367 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Xinpeng xpp055c272 5.5" MIPI-DSI panel driver + * Copyright (C) 2019 Theobroma Systems Design und Consulting GmbH + * + * based on + * + * Rockteck jh057n00900 5.5" MIPI-DSI panel driver + * Copyright (C) Purism SPC 2019 + */ + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +#include <video/display_timing.h> +#include <video/mipi_display.h> + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/media-bus-format.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +/* Manufacturer specific Commands send via DSI */ +#define XPP055C272_CMD_ALL_PIXEL_OFF 0x22 +#define XPP055C272_CMD_ALL_PIXEL_ON 0x23 +#define XPP055C272_CMD_SETDISP 0xb2 +#define XPP055C272_CMD_SETRGBIF 0xb3 +#define XPP055C272_CMD_SETCYC 0xb4 +#define XPP055C272_CMD_SETBGP 0xb5 +#define XPP055C272_CMD_SETVCOM 0xb6 +#define XPP055C272_CMD_SETOTP 0xb7 +#define XPP055C272_CMD_SETPOWER_EXT 0xb8 +#define XPP055C272_CMD_SETEXTC 0xb9 +#define XPP055C272_CMD_SETMIPI 0xbA +#define XPP055C272_CMD_SETVDC 0xbc +#define XPP055C272_CMD_SETPCR 0xbf +#define XPP055C272_CMD_SETSCR 0xc0 +#define XPP055C272_CMD_SETPOWER 0xc1 +#define XPP055C272_CMD_SETECO 0xc6 +#define XPP055C272_CMD_SETPANEL 0xcc +#define XPP055C272_CMD_SETGAMMA 0xe0 +#define XPP055C272_CMD_SETEQ 0xe3 +#define XPP055C272_CMD_SETGIP1 0xe9 +#define XPP055C272_CMD_SETGIP2 0xea + +struct xpp055c272 { + struct device *dev; + struct drm_panel panel; + struct gpio_desc *reset_gpio; + struct regulator *vci; + struct regulator *iovcc; + bool prepared; +}; + +static inline struct xpp055c272 *panel_to_xpp055c272(struct drm_panel *panel) +{ + return container_of(panel, struct xpp055c272, panel); +} + +static int xpp055c272_init_sequence(struct xpp055c272 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct device *dev = ctx->dev; + + /* + * Init sequence was supplied by the panel vendor without much + * documentation. + */ + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETEXTC, 0xf1, 0x12, 0x83); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETMIPI, + 0x33, 0x81, 0x05, 0xf9, 0x0e, 0x0e, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25, + 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4f, 0x01, + 0x00, 0x00, 0x37); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETPOWER_EXT, 0x25); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETPCR, 0x02, 0x11, 0x00); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETRGBIF, + 0x0c, 0x10, 0x0a, 0x50, 0x03, 0xff, 0x00, 0x00, + 0x00, 0x00); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETSCR, + 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70, + 0x00); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETVDC, 0x46); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETPANEL, 0x0b); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETCYC, 0x80); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETDISP, 0xc8, 0x12, 0x30); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETEQ, + 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETPOWER, + 0x53, 0x00, 0x1e, 0x1e, 0x77, 0xe1, 0xcc, 0xdd, + 0x67, 0x77, 0x33, 0x33); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETECO, 0x00, 0x00, 0xff, + 0xff, 0x01, 0xff); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETBGP, 0x09, 0x09); + msleep(20); + + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETVCOM, 0x87, 0x95); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETGIP1, + 0xc2, 0x10, 0x05, 0x05, 0x10, 0x05, 0xa0, 0x12, + 0x31, 0x23, 0x3f, 0x81, 0x0a, 0xa0, 0x37, 0x18, + 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x80, + 0x01, 0x00, 0x00, 0x00, 0x48, 0xf8, 0x86, 0x42, + 0x08, 0x88, 0x88, 0x80, 0x88, 0x88, 0x88, 0x58, + 0xf8, 0x87, 0x53, 0x18, 0x88, 0x88, 0x81, 0x88, + 0x88, 0x88, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETGIP2, + 0x00, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x1f, 0x88, 0x81, 0x35, + 0x78, 0x88, 0x88, 0x85, 0x88, 0x88, 0x88, 0x0f, + 0x88, 0x80, 0x24, 0x68, 0x88, 0x88, 0x84, 0x88, + 0x88, 0x88, 0x23, 0x10, 0x00, 0x00, 0x1c, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x05, + 0xa0, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq(dsi, XPP055C272_CMD_SETGAMMA, + 0x00, 0x06, 0x08, 0x2a, 0x31, 0x3f, 0x38, 0x36, + 0x07, 0x0c, 0x0d, 0x11, 0x13, 0x12, 0x13, 0x11, + 0x18, 0x00, 0x06, 0x08, 0x2a, 0x31, 0x3f, 0x38, + 0x36, 0x07, 0x0c, 0x0d, 0x11, 0x13, 0x12, 0x13, + 0x11, 0x18); + + msleep(60); + + dev_dbg(dev, "Panel init sequence done\n"); + return 0; +} + +static int xpp055c272_unprepare(struct drm_panel *panel) +{ + struct xpp055c272 *ctx = panel_to_xpp055c272(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (!ctx->prepared) + return 0; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + dev_err(ctx->dev, "failed to set display off: %d\n", ret); + + mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) { + dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret); + return ret; + } + + regulator_disable(ctx->iovcc); + regulator_disable(ctx->vci); + + ctx->prepared = false; + + return 0; +} + +static int xpp055c272_prepare(struct drm_panel *panel) +{ + struct xpp055c272 *ctx = panel_to_xpp055c272(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (ctx->prepared) + return 0; + + dev_dbg(ctx->dev, "Resetting the panel\n"); + ret = regulator_enable(ctx->vci); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret); + return ret; + } + ret = regulator_enable(ctx->iovcc); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret); + goto disable_vci; + } + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + /* T6: 10us */ + usleep_range(10, 20); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + + /* T8: 20ms */ + msleep(20); + + ret = xpp055c272_init_sequence(ctx); + if (ret < 0) { + dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret); + goto disable_iovcc; + } + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret); + goto disable_iovcc; + } + + /* T9: 120ms */ + msleep(120); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(ctx->dev, "Failed to set display on: %d\n", ret); + goto disable_iovcc; + } + + msleep(50); + + ctx->prepared = true; + + return 0; + +disable_iovcc: + regulator_disable(ctx->iovcc); +disable_vci: + regulator_disable(ctx->vci); + return ret; +} + +static const struct drm_display_mode default_mode = { + .hdisplay = 720, + .hsync_start = 720 + 40, + .hsync_end = 720 + 40 + 10, + .htotal = 720 + 40 + 10 + 40, + .vdisplay = 1280, + .vsync_start = 1280 + 22, + .vsync_end = 1280 + 22 + 4, + .vtotal = 1280 + 22 + 4 + 11, + .clock = 64000, + .width_mm = 68, + .height_mm = 121, +}; + +static int xpp055c272_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct xpp055c272 *ctx = panel_to_xpp055c272(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &default_mode); + if (!mode) { + dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + drm_mode_vrefresh(&default_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 xpp055c272_funcs = { + .unprepare = xpp055c272_unprepare, + .prepare = xpp055c272_prepare, + .get_modes = xpp055c272_get_modes, +}; + +static int xpp055c272_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct xpp055c272 *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), + "cannot get reset gpio\n"); + + ctx->vci = devm_regulator_get(dev, "vci"); + if (IS_ERR(ctx->vci)) + return dev_err_probe(dev, PTR_ERR(ctx->vci), + "Failed to request vci regulator\n"); + + ctx->iovcc = devm_regulator_get(dev, "iovcc"); + if (IS_ERR(ctx->iovcc)) + return dev_err_probe(dev, PTR_ERR(ctx->iovcc), + "Failed to request iovcc regulator\n"); + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET; + + drm_panel_init(&ctx->panel, &dsi->dev, &xpp055c272_funcs, + DRM_MODE_CONNECTOR_DSI); + + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return ret; + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "mipi_dsi_attach failed: %d\n", ret); + drm_panel_remove(&ctx->panel); + return ret; + } + + return 0; +} + +static void xpp055c272_shutdown(struct mipi_dsi_device *dsi) +{ + struct xpp055c272 *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = drm_panel_unprepare(&ctx->panel); + if (ret < 0) + dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret); + + ret = drm_panel_disable(&ctx->panel); + if (ret < 0) + dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret); +} + +static void xpp055c272_remove(struct mipi_dsi_device *dsi) +{ + struct xpp055c272 *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + xpp055c272_shutdown(dsi); + + 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); +} + +static const struct of_device_id xpp055c272_of_match[] = { + { .compatible = "xinpeng,xpp055c272" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, xpp055c272_of_match); + +static struct mipi_dsi_driver xpp055c272_driver = { + .driver = { + .name = "panel-xinpeng-xpp055c272", + .of_match_table = xpp055c272_of_match, + }, + .probe = xpp055c272_probe, + .remove = xpp055c272_remove, + .shutdown = xpp055c272_shutdown, +}; +module_mipi_dsi_driver(xpp055c272_driver); + +MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>"); +MODULE_DESCRIPTION("DRM driver for Xinpeng xpp055c272 MIPI DSI panel"); +MODULE_LICENSE("GPL v2"); |