Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 2 | /* |
| 3 | * DRM driver for Multi-Inno MI0283QT panels |
| 4 | * |
| 5 | * Copyright 2016 Noralf Trønnes |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 6 | */ |
| 7 | |
Meghana Madhyastha | d1a2e70 | 2018-01-24 16:36:09 +0000 | [diff] [blame] | 8 | #include <linux/backlight.h> |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 9 | #include <linux/delay.h> |
| 10 | #include <linux/gpio/consumer.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/property.h> |
| 13 | #include <linux/regulator/consumer.h> |
| 14 | #include <linux/spi/spi.h> |
Noralf Trønnes | 2a67899 | 2018-01-10 19:59:34 +0100 | [diff] [blame] | 15 | |
Noralf Trønnes | d0a5163 | 2019-02-10 14:10:33 +0100 | [diff] [blame] | 16 | #include <drm/drm_atomic_helper.h> |
Sam Ravnborg | 84056e9 | 2019-01-08 20:29:38 +0100 | [diff] [blame] | 17 | #include <drm/drm_drv.h> |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 18 | #include <drm/drm_fb_helper.h> |
Noralf Trønnes | 3db8d37 | 2018-11-10 15:56:47 +0100 | [diff] [blame] | 19 | #include <drm/drm_gem_cma_helper.h> |
Daniel Vetter | ccc3b2b | 2018-04-05 17:44:42 +0200 | [diff] [blame] | 20 | #include <drm/drm_gem_framebuffer_helper.h> |
Noralf Trønnes | 3db8d37 | 2018-11-10 15:56:47 +0100 | [diff] [blame] | 21 | #include <drm/drm_modeset_helper.h> |
Noralf Trønnes | 2a67899 | 2018-01-10 19:59:34 +0100 | [diff] [blame] | 22 | #include <drm/tinydrm/mipi-dbi.h> |
| 23 | #include <drm/tinydrm/tinydrm-helpers.h> |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 24 | #include <video/mipi_display.h> |
| 25 | |
Noralf Trønnes | 24e05e7a | 2018-01-10 19:59:35 +0100 | [diff] [blame] | 26 | #define ILI9341_FRMCTR1 0xb1 |
| 27 | #define ILI9341_DISCTRL 0xb6 |
| 28 | #define ILI9341_ETMOD 0xb7 |
| 29 | |
| 30 | #define ILI9341_PWCTRL1 0xc0 |
| 31 | #define ILI9341_PWCTRL2 0xc1 |
| 32 | #define ILI9341_VMCTRL1 0xc5 |
| 33 | #define ILI9341_VMCTRL2 0xc7 |
| 34 | #define ILI9341_PWCTRLA 0xcb |
| 35 | #define ILI9341_PWCTRLB 0xcf |
| 36 | |
| 37 | #define ILI9341_PGAMCTRL 0xe0 |
| 38 | #define ILI9341_NGAMCTRL 0xe1 |
| 39 | #define ILI9341_DTCTRLA 0xe8 |
| 40 | #define ILI9341_DTCTRLB 0xea |
| 41 | #define ILI9341_PWRSEQ 0xed |
| 42 | |
| 43 | #define ILI9341_EN3GAM 0xf2 |
| 44 | #define ILI9341_PUMPCTRL 0xf7 |
| 45 | |
| 46 | #define ILI9341_MADCTL_BGR BIT(3) |
| 47 | #define ILI9341_MADCTL_MV BIT(5) |
| 48 | #define ILI9341_MADCTL_MX BIT(6) |
| 49 | #define ILI9341_MADCTL_MY BIT(7) |
| 50 | |
Noralf Trønnes | f730ece | 2018-01-10 19:59:38 +0100 | [diff] [blame] | 51 | static void mi0283qt_enable(struct drm_simple_display_pipe *pipe, |
Ville Syrjälä | 0c9c7fd | 2018-03-22 22:27:37 +0200 | [diff] [blame] | 52 | struct drm_crtc_state *crtc_state, |
| 53 | struct drm_plane_state *plane_state) |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 54 | { |
Noralf Trønnes | 4f83479 | 2019-02-10 14:10:34 +0100 | [diff] [blame] | 55 | struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 56 | u8 addr_mode; |
Noralf Trønnes | 9d5645a | 2019-02-25 15:42:32 +0100 | [diff] [blame] | 57 | int ret, idx; |
| 58 | |
| 59 | if (!drm_dev_enter(pipe->crtc.dev, &idx)) |
| 60 | return; |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 61 | |
| 62 | DRM_DEBUG_KMS("\n"); |
| 63 | |
Noralf Trønnes | 070ab12 | 2018-01-10 19:59:37 +0100 | [diff] [blame] | 64 | ret = mipi_dbi_poweron_conditional_reset(mipi); |
| 65 | if (ret < 0) |
Noralf Trønnes | 9d5645a | 2019-02-25 15:42:32 +0100 | [diff] [blame] | 66 | goto out_exit; |
Noralf Trønnes | 070ab12 | 2018-01-10 19:59:37 +0100 | [diff] [blame] | 67 | if (ret == 1) |
Noralf Trønnes | f730ece | 2018-01-10 19:59:38 +0100 | [diff] [blame] | 68 | goto out_enable; |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 69 | |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 70 | mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF); |
| 71 | |
| 72 | mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30); |
| 73 | mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81); |
| 74 | mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79); |
| 75 | mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02); |
| 76 | mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20); |
| 77 | mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00); |
| 78 | |
| 79 | /* Power Control */ |
| 80 | mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x26); |
| 81 | mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x11); |
| 82 | /* VCOM */ |
| 83 | mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x35, 0x3e); |
| 84 | mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0xbe); |
| 85 | |
| 86 | /* Memory Access Control */ |
Noralf Trønnes | 24e05e7a | 2018-01-10 19:59:35 +0100 | [diff] [blame] | 87 | mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 88 | |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 89 | /* Frame Rate */ |
| 90 | mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b); |
| 91 | |
| 92 | /* Gamma */ |
| 93 | mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x08); |
| 94 | mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01); |
| 95 | mipi_dbi_command(mipi, ILI9341_PGAMCTRL, |
| 96 | 0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87, |
| 97 | 0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00); |
| 98 | mipi_dbi_command(mipi, ILI9341_NGAMCTRL, |
| 99 | 0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78, |
| 100 | 0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f); |
| 101 | |
| 102 | /* DDRAM */ |
| 103 | mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07); |
| 104 | |
| 105 | /* Display */ |
| 106 | mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00); |
| 107 | mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); |
| 108 | msleep(100); |
| 109 | |
| 110 | mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); |
| 111 | msleep(100); |
| 112 | |
Noralf Trønnes | f730ece | 2018-01-10 19:59:38 +0100 | [diff] [blame] | 113 | out_enable: |
Tom Callaway | 9f99963 | 2018-04-23 12:16:39 -0400 | [diff] [blame] | 114 | /* The PiTFT (ili9340) has a hardware reset circuit that |
| 115 | * resets only on power-on and not on each reboot through |
| 116 | * a gpio like the rpi-display does. |
| 117 | * As a result, we need to always apply the rotation value |
| 118 | * regardless of the display "on/off" state. |
| 119 | */ |
| 120 | switch (mipi->rotation) { |
| 121 | default: |
| 122 | addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY | |
| 123 | ILI9341_MADCTL_MX; |
| 124 | break; |
| 125 | case 90: |
| 126 | addr_mode = ILI9341_MADCTL_MY; |
| 127 | break; |
| 128 | case 180: |
| 129 | addr_mode = ILI9341_MADCTL_MV; |
| 130 | break; |
| 131 | case 270: |
| 132 | addr_mode = ILI9341_MADCTL_MX; |
| 133 | break; |
| 134 | } |
| 135 | addr_mode |= ILI9341_MADCTL_BGR; |
| 136 | mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); |
Ville Syrjälä | e85d300 | 2018-03-23 17:35:09 +0200 | [diff] [blame] | 137 | mipi_dbi_enable_flush(mipi, crtc_state, plane_state); |
Noralf Trønnes | 9d5645a | 2019-02-25 15:42:32 +0100 | [diff] [blame] | 138 | out_exit: |
| 139 | drm_dev_exit(idx); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = { |
Noralf Trønnes | f730ece | 2018-01-10 19:59:38 +0100 | [diff] [blame] | 143 | .enable = mi0283qt_enable, |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 144 | .disable = mipi_dbi_pipe_disable, |
Noralf Trønnes | af74138 | 2019-01-15 05:36:42 +0100 | [diff] [blame] | 145 | .update = mipi_dbi_pipe_update, |
Daniel Vetter | ccc3b2b | 2018-04-05 17:44:42 +0200 | [diff] [blame] | 146 | .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 147 | }; |
| 148 | |
| 149 | static const struct drm_display_mode mi0283qt_mode = { |
Noralf Trønnes | 06db4b8 | 2019-02-10 14:10:31 +0100 | [diff] [blame] | 150 | DRM_SIMPLE_MODE(320, 240, 58, 43), |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 151 | }; |
| 152 | |
Noralf Trønnes | 79b85d2 | 2017-03-26 16:25:29 +0200 | [diff] [blame] | 153 | DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops); |
| 154 | |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 155 | static struct drm_driver mi0283qt_driver = { |
| 156 | .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | |
| 157 | DRIVER_ATOMIC, |
Noralf Trønnes | 79b85d2 | 2017-03-26 16:25:29 +0200 | [diff] [blame] | 158 | .fops = &mi0283qt_fops, |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 159 | .release = mipi_dbi_release, |
Noralf Trønnes | 3db8d37 | 2018-11-10 15:56:47 +0100 | [diff] [blame] | 160 | DRM_GEM_CMA_VMAP_DRIVER_OPS, |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 161 | .debugfs_init = mipi_dbi_debugfs_init, |
| 162 | .name = "mi0283qt", |
| 163 | .desc = "Multi-Inno MI0283QT", |
| 164 | .date = "20160614", |
| 165 | .major = 1, |
| 166 | .minor = 0, |
| 167 | }; |
| 168 | |
| 169 | static const struct of_device_id mi0283qt_of_match[] = { |
| 170 | { .compatible = "multi-inno,mi0283qt" }, |
| 171 | {}, |
| 172 | }; |
| 173 | MODULE_DEVICE_TABLE(of, mi0283qt_of_match); |
| 174 | |
| 175 | static const struct spi_device_id mi0283qt_id[] = { |
| 176 | { "mi0283qt", 0 }, |
| 177 | { }, |
| 178 | }; |
| 179 | MODULE_DEVICE_TABLE(spi, mi0283qt_id); |
| 180 | |
| 181 | static int mi0283qt_probe(struct spi_device *spi) |
| 182 | { |
| 183 | struct device *dev = &spi->dev; |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 184 | struct drm_device *drm; |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 185 | struct mipi_dbi *mipi; |
| 186 | struct gpio_desc *dc; |
| 187 | u32 rotation = 0; |
| 188 | int ret; |
| 189 | |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 190 | mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 191 | if (!mipi) |
| 192 | return -ENOMEM; |
| 193 | |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 194 | drm = &mipi->drm; |
| 195 | ret = devm_drm_dev_init(dev, drm, &mi0283qt_driver); |
| 196 | if (ret) { |
| 197 | kfree(mipi); |
| 198 | return ret; |
| 199 | } |
| 200 | |
| 201 | drm_mode_config_init(drm); |
| 202 | |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 203 | mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); |
| 204 | if (IS_ERR(mipi->reset)) { |
Harsha Sharma | e43e818 | 2017-10-07 03:47:38 +0530 | [diff] [blame] | 205 | DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 206 | return PTR_ERR(mipi->reset); |
| 207 | } |
| 208 | |
| 209 | dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW); |
| 210 | if (IS_ERR(dc)) { |
Harsha Sharma | e43e818 | 2017-10-07 03:47:38 +0530 | [diff] [blame] | 211 | DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 212 | return PTR_ERR(dc); |
| 213 | } |
| 214 | |
| 215 | mipi->regulator = devm_regulator_get(dev, "power"); |
| 216 | if (IS_ERR(mipi->regulator)) |
| 217 | return PTR_ERR(mipi->regulator); |
| 218 | |
Meghana Madhyastha | 27f6640 | 2018-01-24 16:37:56 +0000 | [diff] [blame] | 219 | mipi->backlight = devm_of_find_backlight(dev); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 220 | if (IS_ERR(mipi->backlight)) |
| 221 | return PTR_ERR(mipi->backlight); |
| 222 | |
| 223 | device_property_read_u32(dev, "rotation", &rotation); |
| 224 | |
David Lechner | ace9881 | 2017-08-03 17:33:45 -0500 | [diff] [blame] | 225 | ret = mipi_dbi_spi_init(spi, mipi, dc); |
| 226 | if (ret) |
| 227 | return ret; |
| 228 | |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 229 | ret = mipi_dbi_init(mipi, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 230 | if (ret) |
| 231 | return ret; |
| 232 | |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 233 | drm_mode_config_reset(drm); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 234 | |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 235 | ret = drm_dev_register(drm, 0); |
| 236 | if (ret) |
| 237 | return ret; |
| 238 | |
| 239 | spi_set_drvdata(spi, drm); |
| 240 | |
Noralf Trønnes | f47056e | 2019-04-10 14:43:45 +0200 | [diff] [blame] | 241 | drm_fbdev_generic_setup(drm, 0); |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static int mi0283qt_remove(struct spi_device *spi) |
| 247 | { |
| 248 | struct drm_device *drm = spi_get_drvdata(spi); |
| 249 | |
| 250 | drm_dev_unplug(drm); |
| 251 | drm_atomic_helper_shutdown(drm); |
| 252 | |
| 253 | return 0; |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | static void mi0283qt_shutdown(struct spi_device *spi) |
| 257 | { |
Noralf Trønnes | d0a5163 | 2019-02-10 14:10:33 +0100 | [diff] [blame] | 258 | drm_atomic_helper_shutdown(spi_get_drvdata(spi)); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | static int __maybe_unused mi0283qt_pm_suspend(struct device *dev) |
| 262 | { |
Noralf Trønnes | d0a5163 | 2019-02-10 14:10:33 +0100 | [diff] [blame] | 263 | return drm_mode_config_helper_suspend(dev_get_drvdata(dev)); |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | static int __maybe_unused mi0283qt_pm_resume(struct device *dev) |
| 267 | { |
Noralf Trønnes | d0a5163 | 2019-02-10 14:10:33 +0100 | [diff] [blame] | 268 | drm_mode_config_helper_resume(dev_get_drvdata(dev)); |
Noralf Trønnes | 6e8e9a0 | 2017-11-06 20:18:11 +0100 | [diff] [blame] | 269 | |
| 270 | return 0; |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | static const struct dev_pm_ops mi0283qt_pm_ops = { |
| 274 | SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume) |
| 275 | }; |
| 276 | |
| 277 | static struct spi_driver mi0283qt_spi_driver = { |
| 278 | .driver = { |
| 279 | .name = "mi0283qt", |
| 280 | .owner = THIS_MODULE, |
| 281 | .of_match_table = mi0283qt_of_match, |
| 282 | .pm = &mi0283qt_pm_ops, |
| 283 | }, |
| 284 | .id_table = mi0283qt_id, |
| 285 | .probe = mi0283qt_probe, |
Noralf Trønnes | 3eba392 | 2019-02-25 15:42:30 +0100 | [diff] [blame] | 286 | .remove = mi0283qt_remove, |
Noralf Trønnes | 1f47e6c | 2017-01-22 15:23:48 +0100 | [diff] [blame] | 287 | .shutdown = mi0283qt_shutdown, |
| 288 | }; |
| 289 | module_spi_driver(mi0283qt_spi_driver); |
| 290 | |
| 291 | MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver"); |
| 292 | MODULE_AUTHOR("Noralf Trønnes"); |
| 293 | MODULE_LICENSE("GPL"); |