| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Maxime Ripard | 2593 | 66.54% | 1 | 2.94% |
| Sebastian Reichel | 525 | 13.47% | 10 | 29.41% |
| Miquel Raynal | 415 | 10.65% | 4 | 11.76% |
| Michael Riesch | 307 | 7.88% | 3 | 8.82% |
| Sam Ravnborg | 18 | 0.46% | 4 | 11.76% |
| Laurent Pinchart | 11 | 0.28% | 3 | 8.82% |
| Gerald Loacker | 8 | 0.21% | 3 | 8.82% |
| Chen Ni | 8 | 0.21% | 1 | 2.94% |
| Ville Syrjälä | 3 | 0.08% | 1 | 2.94% |
| Eric Anholt | 3 | 0.08% | 1 | 2.94% |
| Thierry Reding | 3 | 0.08% | 1 | 2.94% |
| Thomas Gleixner | 2 | 0.05% | 1 | 2.94% |
| Uwe Kleine-König | 1 | 0.03% | 1 | 2.94% |
| Total | 3897 | 34 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2017 Free Electrons */ #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <video/mipi_display.h> #include <linux/media-bus-format.h> #include <drm/drm_device.h> #include <drm/drm_modes.h> #include <drm/drm_panel.h> #define ST7789V_RAMCTRL_CMD 0xb0 #define ST7789V_RAMCTRL_RM_RGB BIT(4) #define ST7789V_RAMCTRL_DM_RGB BIT(0) #define ST7789V_RAMCTRL_MAGIC (3 << 6) #define ST7789V_RAMCTRL_EPF(n) (((n) & 3) << 4) #define ST7789V_RGBCTRL_CMD 0xb1 #define ST7789V_RGBCTRL_WO BIT(7) #define ST7789V_RGBCTRL_RCM(n) (((n) & 3) << 5) #define ST7789V_RGBCTRL_VSYNC_HIGH BIT(3) #define ST7789V_RGBCTRL_HSYNC_HIGH BIT(2) #define ST7789V_RGBCTRL_PCLK_FALLING BIT(1) #define ST7789V_RGBCTRL_DE_LOW BIT(0) #define ST7789V_RGBCTRL_VBP(n) ((n) & 0x7f) #define ST7789V_RGBCTRL_HBP(n) ((n) & 0x1f) #define ST7789V_PORCTRL_CMD 0xb2 #define ST7789V_PORCTRL_IDLE_BP(n) (((n) & 0xf) << 4) #define ST7789V_PORCTRL_IDLE_FP(n) ((n) & 0xf) #define ST7789V_PORCTRL_PARTIAL_BP(n) (((n) & 0xf) << 4) #define ST7789V_PORCTRL_PARTIAL_FP(n) ((n) & 0xf) #define ST7789V_GCTRL_CMD 0xb7 #define ST7789V_GCTRL_VGHS(n) (((n) & 7) << 4) #define ST7789V_GCTRL_VGLS(n) ((n) & 7) #define ST7789V_VCOMS_CMD 0xbb #define ST7789V_LCMCTRL_CMD 0xc0 #define ST7789V_LCMCTRL_XBGR BIT(5) #define ST7789V_LCMCTRL_XMX BIT(3) #define ST7789V_LCMCTRL_XMH BIT(2) #define ST7789V_VDVVRHEN_CMD 0xc2 #define ST7789V_VDVVRHEN_CMDEN BIT(0) #define ST7789V_VRHS_CMD 0xc3 #define ST7789V_VDVS_CMD 0xc4 #define ST7789V_FRCTRL2_CMD 0xc6 #define ST7789V_PWCTRL1_CMD 0xd0 #define ST7789V_PWCTRL1_MAGIC 0xa4 #define ST7789V_PWCTRL1_AVDD(n) (((n) & 3) << 6) #define ST7789V_PWCTRL1_AVCL(n) (((n) & 3) << 4) #define ST7789V_PWCTRL1_VDS(n) ((n) & 3) #define ST7789V_PVGAMCTRL_CMD 0xe0 #define ST7789V_PVGAMCTRL_JP0(n) (((n) & 3) << 4) #define ST7789V_PVGAMCTRL_JP1(n) (((n) & 3) << 4) #define ST7789V_PVGAMCTRL_VP0(n) ((n) & 0xf) #define ST7789V_PVGAMCTRL_VP1(n) ((n) & 0x3f) #define ST7789V_PVGAMCTRL_VP2(n) ((n) & 0x3f) #define ST7789V_PVGAMCTRL_VP4(n) ((n) & 0x1f) #define ST7789V_PVGAMCTRL_VP6(n) ((n) & 0x1f) #define ST7789V_PVGAMCTRL_VP13(n) ((n) & 0xf) #define ST7789V_PVGAMCTRL_VP20(n) ((n) & 0x7f) #define ST7789V_PVGAMCTRL_VP27(n) ((n) & 7) #define ST7789V_PVGAMCTRL_VP36(n) (((n) & 7) << 4) #define ST7789V_PVGAMCTRL_VP43(n) ((n) & 0x7f) #define ST7789V_PVGAMCTRL_VP50(n) ((n) & 0xf) #define ST7789V_PVGAMCTRL_VP57(n) ((n) & 0x1f) #define ST7789V_PVGAMCTRL_VP59(n) ((n) & 0x1f) #define ST7789V_PVGAMCTRL_VP61(n) ((n) & 0x3f) #define ST7789V_PVGAMCTRL_VP62(n) ((n) & 0x3f) #define ST7789V_PVGAMCTRL_VP63(n) (((n) & 0xf) << 4) #define ST7789V_NVGAMCTRL_CMD 0xe1 #define ST7789V_NVGAMCTRL_JN0(n) (((n) & 3) << 4) #define ST7789V_NVGAMCTRL_JN1(n) (((n) & 3) << 4) #define ST7789V_NVGAMCTRL_VN0(n) ((n) & 0xf) #define ST7789V_NVGAMCTRL_VN1(n) ((n) & 0x3f) #define ST7789V_NVGAMCTRL_VN2(n) ((n) & 0x3f) #define ST7789V_NVGAMCTRL_VN4(n) ((n) & 0x1f) #define ST7789V_NVGAMCTRL_VN6(n) ((n) & 0x1f) #define ST7789V_NVGAMCTRL_VN13(n) ((n) & 0xf) #define ST7789V_NVGAMCTRL_VN20(n) ((n) & 0x7f) #define ST7789V_NVGAMCTRL_VN27(n) ((n) & 7) #define ST7789V_NVGAMCTRL_VN36(n) (((n) & 7) << 4) #define ST7789V_NVGAMCTRL_VN43(n) ((n) & 0x7f) #define ST7789V_NVGAMCTRL_VN50(n) ((n) & 0xf) #define ST7789V_NVGAMCTRL_VN57(n) ((n) & 0x1f) #define ST7789V_NVGAMCTRL_VN59(n) ((n) & 0x1f) #define ST7789V_NVGAMCTRL_VN61(n) ((n) & 0x3f) #define ST7789V_NVGAMCTRL_VN62(n) ((n) & 0x3f) #define ST7789V_NVGAMCTRL_VN63(n) (((n) & 0xf) << 4) #define ST7789V_TEST(val, func) \ do { \ if ((val = (func))) \ return val; \ } while (0) #define ST7789V_IDS { 0x85, 0x85, 0x52 } #define ST7789V_IDS_SIZE 3 struct st7789_panel_info { const struct drm_display_mode *mode; u32 bus_format; u32 bus_flags; bool invert_mode; bool partial_mode; u16 partial_start; u16 partial_end; }; struct st7789v { struct drm_panel panel; const struct st7789_panel_info *info; struct spi_device *spi; struct gpio_desc *reset; struct regulator *power; enum drm_panel_orientation orientation; }; enum st7789v_prefix { ST7789V_COMMAND = 0, ST7789V_DATA = 1, }; static inline struct st7789v *panel_to_st7789v(struct drm_panel *panel) { return container_of(panel, struct st7789v, panel); } static int st7789v_spi_write(struct st7789v *ctx, enum st7789v_prefix prefix, u8 data) { struct spi_transfer xfer = { }; u16 txbuf = ((prefix & 1) << 8) | data; xfer.tx_buf = &txbuf; xfer.len = sizeof(txbuf); return spi_sync_transfer(ctx->spi, &xfer, 1); } static int st7789v_write_command(struct st7789v *ctx, u8 cmd) { return st7789v_spi_write(ctx, ST7789V_COMMAND, cmd); } static int st7789v_write_data(struct st7789v *ctx, u8 cmd) { return st7789v_spi_write(ctx, ST7789V_DATA, cmd); } static int st7789v_read_data(struct st7789v *ctx, u8 cmd, u8 *buf, unsigned int len) { struct spi_transfer xfer[2] = { }; struct spi_message msg; u16 txbuf = ((ST7789V_COMMAND & 1) << 8) | cmd; u16 rxbuf[4] = {}; u8 bit9 = 0; int ret, i; switch (len) { case 1: case 3: case 4: break; default: return -EOPNOTSUPP; } spi_message_init(&msg); xfer[0].tx_buf = &txbuf; xfer[0].len = sizeof(txbuf); spi_message_add_tail(&xfer[0], &msg); xfer[1].rx_buf = rxbuf; xfer[1].len = len * 2; spi_message_add_tail(&xfer[1], &msg); ret = spi_sync(ctx->spi, &msg); if (ret) return ret; for (i = 0; i < len; i++) { buf[i] = rxbuf[i] >> i | (bit9 << (9 - i)); if (i) bit9 = rxbuf[i] & GENMASK(i - 1, 0); } return 0; } static int st7789v_check_id(struct drm_panel *panel) { const u8 st7789v_ids[ST7789V_IDS_SIZE] = ST7789V_IDS; struct st7789v *ctx = panel_to_st7789v(panel); bool invalid_ids = false; int ret, i; u8 ids[3]; if (ctx->spi->mode & SPI_NO_RX) return 0; ret = st7789v_read_data(ctx, MIPI_DCS_GET_DISPLAY_ID, ids, ST7789V_IDS_SIZE); if (ret) return ret; for (i = 0; i < ST7789V_IDS_SIZE; i++) { if (ids[i] != st7789v_ids[i]) { invalid_ids = true; break; } } if (invalid_ids) return -EIO; return 0; } static const struct drm_display_mode default_mode = { .clock = 7000, .hdisplay = 240, .hsync_start = 240 + 38, .hsync_end = 240 + 38 + 10, .htotal = 240 + 38 + 10 + 10, .vdisplay = 320, .vsync_start = 320 + 8, .vsync_end = 320 + 8 + 4, .vtotal = 320 + 8 + 4 + 4, .width_mm = 61, .height_mm = 103, .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, }; static const struct drm_display_mode t28cp45tn89_mode = { .clock = 6008, .hdisplay = 240, .hsync_start = 240 + 38, .hsync_end = 240 + 38 + 10, .htotal = 240 + 38 + 10 + 10, .vdisplay = 320, .vsync_start = 320 + 8, .vsync_end = 320 + 8 + 4, .vtotal = 320 + 8 + 4 + 4, .width_mm = 43, .height_mm = 57, .flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC, }; static const struct drm_display_mode et028013dma_mode = { .clock = 3000, .hdisplay = 240, .hsync_start = 240 + 38, .hsync_end = 240 + 38 + 10, .htotal = 240 + 38 + 10 + 10, .vdisplay = 320, .vsync_start = 320 + 8, .vsync_end = 320 + 8 + 4, .vtotal = 320 + 8 + 4 + 4, .width_mm = 43, .height_mm = 58, .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, }; static const struct drm_display_mode jt240mhqs_hwt_ek_e3_mode = { .clock = 6000, .hdisplay = 240, .hsync_start = 240 + 38, .hsync_end = 240 + 38 + 10, .htotal = 240 + 38 + 10 + 10, .vdisplay = 280, .vsync_start = 280 + 48, .vsync_end = 280 + 48 + 4, .vtotal = 280 + 48 + 4 + 4, .width_mm = 37, .height_mm = 43, .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, }; static const struct st7789_panel_info default_panel = { .mode = &default_mode, .invert_mode = true, .bus_format = MEDIA_BUS_FMT_RGB666_1X18, .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE, }; static const struct st7789_panel_info t28cp45tn89_panel = { .mode = &t28cp45tn89_mode, .invert_mode = false, .bus_format = MEDIA_BUS_FMT_RGB565_1X16, .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE, }; static const struct st7789_panel_info et028013dma_panel = { .mode = &et028013dma_mode, .invert_mode = true, .bus_format = MEDIA_BUS_FMT_RGB666_1X18, .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE, }; static const struct st7789_panel_info jt240mhqs_hwt_ek_e3_panel = { .mode = &jt240mhqs_hwt_ek_e3_mode, .invert_mode = true, .bus_format = MEDIA_BUS_FMT_RGB666_1X18, .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE, .partial_mode = true, .partial_start = 38, .partial_end = 318, }; static int st7789v_get_modes(struct drm_panel *panel, struct drm_connector *connector) { struct st7789v *ctx = panel_to_st7789v(panel); struct drm_display_mode *mode; mode = drm_mode_duplicate(connector->dev, ctx->info->mode); if (!mode) { dev_err(panel->dev, "failed to add mode %ux%u@%u\n", ctx->info->mode->hdisplay, ctx->info->mode->vdisplay, drm_mode_vrefresh(ctx->info->mode)); return -ENOMEM; } drm_mode_set_name(mode); mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); connector->display_info.bpc = 6; connector->display_info.width_mm = ctx->info->mode->width_mm; connector->display_info.height_mm = ctx->info->mode->height_mm; connector->display_info.bus_flags = ctx->info->bus_flags; drm_display_info_set_bus_formats(&connector->display_info, &ctx->info->bus_format, 1); /* * TODO: Remove once all drm drivers call * drm_connector_set_orientation_from_panel() */ drm_connector_set_panel_orientation(connector, ctx->orientation); return 1; } static enum drm_panel_orientation st7789v_get_orientation(struct drm_panel *p) { struct st7789v *ctx = panel_to_st7789v(p); return ctx->orientation; } static int st7789v_prepare(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); u8 mode, pixel_fmt, polarity; int ret; if (!ctx->info->partial_mode) mode = ST7789V_RGBCTRL_WO; else mode = 0; switch (ctx->info->bus_format) { case MEDIA_BUS_FMT_RGB666_1X18: pixel_fmt = MIPI_DCS_PIXEL_FMT_18BIT; break; case MEDIA_BUS_FMT_RGB565_1X16: pixel_fmt = MIPI_DCS_PIXEL_FMT_16BIT; break; default: dev_err(panel->dev, "unsupported bus format: %d\n", ctx->info->bus_format); return -EINVAL; } pixel_fmt = (pixel_fmt << 4) | pixel_fmt; polarity = 0; if (ctx->info->mode->flags & DRM_MODE_FLAG_PVSYNC) polarity |= ST7789V_RGBCTRL_VSYNC_HIGH; if (ctx->info->mode->flags & DRM_MODE_FLAG_PHSYNC) polarity |= ST7789V_RGBCTRL_HSYNC_HIGH; if (ctx->info->bus_flags & DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE) polarity |= ST7789V_RGBCTRL_PCLK_FALLING; if (ctx->info->bus_flags & DRM_BUS_FLAG_DE_LOW) polarity |= ST7789V_RGBCTRL_DE_LOW; ret = regulator_enable(ctx->power); if (ret) return ret; gpiod_set_value(ctx->reset, 1); msleep(30); gpiod_set_value(ctx->reset, 0); msleep(120); /* * Avoid failing if the IDs are invalid in case the Rx bus width * description is missing. */ ret = st7789v_check_id(panel); if (ret) dev_warn(panel->dev, "Unrecognized panel IDs"); ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_EXIT_SLEEP_MODE)); /* We need to wait 120ms after a sleep out command */ msleep(120); ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_ADDRESS_MODE)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0)); ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_PIXEL_FORMAT)); ST7789V_TEST(ret, st7789v_write_data(ctx, pixel_fmt)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PORCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0xc)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0xc)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PORCTRL_IDLE_BP(3) | ST7789V_PORCTRL_IDLE_FP(3))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PORCTRL_PARTIAL_BP(3) | ST7789V_PORCTRL_PARTIAL_FP(3))); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_GCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_GCTRL_VGLS(5) | ST7789V_GCTRL_VGHS(3))); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VCOMS_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0x2b)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_LCMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_LCMCTRL_XMH | ST7789V_LCMCTRL_XMX | ST7789V_LCMCTRL_XBGR)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VDVVRHEN_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_VDVVRHEN_CMDEN)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VRHS_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0xf)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_VDVS_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0x20)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_FRCTRL2_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0xf)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PWCTRL1_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PWCTRL1_MAGIC)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PWCTRL1_AVDD(2) | ST7789V_PWCTRL1_AVCL(2) | ST7789V_PWCTRL1_VDS(1))); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PVGAMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP63(0xd))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP1(0xca))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP2(0xe))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP4(8))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP6(9))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP13(7))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP20(0x2d))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP27(0xb) | ST7789V_PVGAMCTRL_VP36(3))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP43(0x3d))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_JP1(3) | ST7789V_PVGAMCTRL_VP50(4))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP57(0xa))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP59(0xa))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP61(0x1b))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_PVGAMCTRL_VP62(0x28))); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_NVGAMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN63(0xd))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN1(0xca))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN2(0xf))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN4(8))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN6(8))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN13(7))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN20(0x2e))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN27(0xc) | ST7789V_NVGAMCTRL_VN36(5))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN43(0x40))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_JN1(3) | ST7789V_NVGAMCTRL_VN50(4))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN57(9))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN59(0xb))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN61(0x1b))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_NVGAMCTRL_VN62(0x28))); if (ctx->info->invert_mode) { ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_ENTER_INVERT_MODE)); } else { ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_EXIT_INVERT_MODE)); } if (ctx->info->partial_mode) { u8 area_data[4] = { (ctx->info->partial_start >> 8) & 0xff, (ctx->info->partial_start >> 0) & 0xff, ((ctx->info->partial_end - 1) >> 8) & 0xff, ((ctx->info->partial_end - 1) >> 0) & 0xff, }; /* Caution: if userspace ever pushes a mode different from the * expected one (i.e., the one advertised by get_modes), we'll * add margins. */ ST7789V_TEST(ret, st7789v_write_command( ctx, MIPI_DCS_ENTER_PARTIAL_MODE)); ST7789V_TEST(ret, st7789v_write_command( ctx, MIPI_DCS_SET_PAGE_ADDRESS)); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); ST7789V_TEST(ret, st7789v_write_command( ctx, MIPI_DCS_SET_PARTIAL_ROWS)); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); } ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RAMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_DM_RGB | ST7789V_RAMCTRL_RM_RGB)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_EPF(3) | ST7789V_RAMCTRL_MAGIC)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RGBCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, mode | ST7789V_RGBCTRL_RCM(2) | polarity)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_VBP(8))); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_HBP(20))); return 0; } static int st7789v_enable(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); return st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_ON); } static int st7789v_disable(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); int ret; ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_DISPLAY_OFF)); return 0; } static int st7789v_unprepare(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); int ret; ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_ENTER_SLEEP_MODE)); regulator_disable(ctx->power); return 0; } static const struct drm_panel_funcs st7789v_drm_funcs = { .disable = st7789v_disable, .enable = st7789v_enable, .get_modes = st7789v_get_modes, .get_orientation = st7789v_get_orientation, .prepare = st7789v_prepare, .unprepare = st7789v_unprepare, }; static int st7789v_probe(struct spi_device *spi) { struct device *dev = &spi->dev; struct st7789v *ctx; int ret; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; spi_set_drvdata(spi, ctx); ctx->spi = spi; spi->bits_per_word = 9; ret = spi_setup(spi); if (ret < 0) return dev_err_probe(&spi->dev, ret, "Failed to setup spi\n"); ctx->info = device_get_match_data(&spi->dev); drm_panel_init(&ctx->panel, dev, &st7789v_drm_funcs, DRM_MODE_CONNECTOR_DPI); ctx->power = devm_regulator_get(dev, "power"); ret = PTR_ERR_OR_ZERO(ctx->power); if (ret) return dev_err_probe(dev, ret, "Failed to get regulator\n"); ctx->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); ret = PTR_ERR_OR_ZERO(ctx->reset); if (ret) return dev_err_probe(dev, ret, "Failed to get reset line\n"); ret = drm_panel_of_backlight(&ctx->panel); if (ret) return dev_err_probe(dev, ret, "Failed to get backlight\n"); ret = of_drm_get_panel_orientation(spi->dev.of_node, &ctx->orientation); if (ret) return dev_err_probe(&spi->dev, ret, "Failed to get orientation\n"); drm_panel_add(&ctx->panel); return 0; } static void st7789v_remove(struct spi_device *spi) { struct st7789v *ctx = spi_get_drvdata(spi); drm_panel_remove(&ctx->panel); } static const struct spi_device_id st7789v_spi_id[] = { { "st7789v", (unsigned long) &default_panel }, { "t28cp45tn89-v17", (unsigned long) &t28cp45tn89_panel }, { "et028013dma", (unsigned long) &et028013dma_panel }, { "jt240mhqs-hwt-ek-e3", (unsigned long) &jt240mhqs_hwt_ek_e3_panel }, { } }; MODULE_DEVICE_TABLE(spi, st7789v_spi_id); static const struct of_device_id st7789v_of_match[] = { { .compatible = "sitronix,st7789v", .data = &default_panel }, { .compatible = "inanbo,t28cp45tn89-v17", .data = &t28cp45tn89_panel }, { .compatible = "edt,et028013dma", .data = &et028013dma_panel }, { .compatible = "jasonic,jt240mhqs-hwt-ek-e3", .data = &jt240mhqs_hwt_ek_e3_panel }, { } }; MODULE_DEVICE_TABLE(of, st7789v_of_match); static struct spi_driver st7789v_driver = { .probe = st7789v_probe, .remove = st7789v_remove, .id_table = st7789v_spi_id, .driver = { .name = "st7789v", .of_match_table = st7789v_of_match, }, }; module_spi_driver(st7789v_driver); MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>"); MODULE_DESCRIPTION("Sitronix st7789v LCD Driver"); MODULE_LICENSE("GPL v2");
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