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1// SPDX-License-Identifier: GPL-2.0+2 3#include <linux/backlight.h>4#include <linux/delay.h>5#include <linux/gpio/consumer.h>6#include <linux/module.h>7#include <linux/property.h>8#include <linux/spi/spi.h>9 10#include <drm/drm_atomic_helper.h>11#include <drm/drm_drv.h>12#include <drm/drm_fbdev_dma.h>13#include <drm/drm_gem_atomic_helper.h>14#include <drm/drm_gem_dma_helper.h>15#include <drm/drm_mipi_dbi.h>16#include <drm/drm_modeset_helper.h>17 18#include <video/mipi_display.h>19 20#define ILI9163_FRMCTR1 0xb121 22#define ILI9163_PWCTRL1 0xc023#define ILI9163_PWCTRL2 0xc124#define ILI9163_VMCTRL1 0xc525#define ILI9163_VMCTRL2 0xc726#define ILI9163_PWCTRLA 0xcb27#define ILI9163_PWCTRLB 0xcf28 29#define ILI9163_EN3GAM 0xf230 31#define ILI9163_MADCTL_BGR BIT(3)32#define ILI9163_MADCTL_MV BIT(5)33#define ILI9163_MADCTL_MX BIT(6)34#define ILI9163_MADCTL_MY BIT(7)35 36static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,37 struct drm_crtc_state *crtc_state,38 struct drm_plane_state *plane_state)39{40 struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);41 struct mipi_dbi *dbi = &dbidev->dbi;42 u8 addr_mode;43 int ret, idx;44 45 if (!drm_dev_enter(pipe->crtc.dev, &idx))46 return;47 48 DRM_DEBUG_KMS("\n");49 50 ret = mipi_dbi_poweron_conditional_reset(dbidev);51 if (ret < 0)52 goto out_exit;53 if (ret == 1)54 goto out_enable;55 56 /* Gamma */57 mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x04);58 mipi_dbi_command(dbi, ILI9163_EN3GAM, 0x00);59 60 /* Frame Rate */61 mipi_dbi_command(dbi, ILI9163_FRMCTR1, 0x0a, 0x14);62 63 /* Power Control */64 mipi_dbi_command(dbi, ILI9163_PWCTRL1, 0x0a, 0x00);65 mipi_dbi_command(dbi, ILI9163_PWCTRL2, 0x02);66 67 /* VCOM */68 mipi_dbi_command(dbi, ILI9163_VMCTRL1, 0x2f, 0x3e);69 mipi_dbi_command(dbi, ILI9163_VMCTRL2, 0x40);70 71 /* Memory Access Control */72 mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);73 74 mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);75 msleep(100);76 77 mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);78 msleep(100);79 80out_enable:81 switch (dbidev->rotation) {82 default:83 addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MY;84 break;85 case 90:86 addr_mode = ILI9163_MADCTL_MX | ILI9163_MADCTL_MV;87 break;88 case 180:89 addr_mode = 0;90 break;91 case 270:92 addr_mode = ILI9163_MADCTL_MY | ILI9163_MADCTL_MV;93 break;94 }95 addr_mode |= ILI9163_MADCTL_BGR;96 mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);97 mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);98out_exit:99 drm_dev_exit(idx);100}101 102static const struct drm_simple_display_pipe_funcs ili9163_pipe_funcs = {103 DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS(yx240qv29_enable),104};105 106static const struct drm_display_mode yx240qv29_mode = {107 DRM_SIMPLE_MODE(128, 160, 28, 35),108};109 110DEFINE_DRM_GEM_DMA_FOPS(ili9163_fops);111 112static struct drm_driver ili9163_driver = {113 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,114 .fops = &ili9163_fops,115 DRM_GEM_DMA_DRIVER_OPS_VMAP,116 .debugfs_init = mipi_dbi_debugfs_init,117 .name = "ili9163",118 .desc = "Ilitek ILI9163",119 .date = "20210208",120 .major = 1,121 .minor = 0,122};123 124static const struct of_device_id ili9163_of_match[] = {125 { .compatible = "newhaven,1.8-128160EF" },126 { }127};128MODULE_DEVICE_TABLE(of, ili9163_of_match);129 130static const struct spi_device_id ili9163_id[] = {131 { "nhd-1.8-128160EF", 0 },132 { }133};134MODULE_DEVICE_TABLE(spi, ili9163_id);135 136static int ili9163_probe(struct spi_device *spi)137{138 struct device *dev = &spi->dev;139 struct mipi_dbi_dev *dbidev;140 struct drm_device *drm;141 struct mipi_dbi *dbi;142 struct gpio_desc *dc;143 u32 rotation = 0;144 int ret;145 146 dbidev = devm_drm_dev_alloc(dev, &ili9163_driver,147 struct mipi_dbi_dev, drm);148 if (IS_ERR(dbidev))149 return PTR_ERR(dbidev);150 151 dbi = &dbidev->dbi;152 drm = &dbidev->drm;153 154 spi_set_drvdata(spi, drm);155 156 dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);157 if (IS_ERR(dbi->reset)) {158 DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");159 return PTR_ERR(dbi->reset);160 }161 162 dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);163 if (IS_ERR(dc)) {164 DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");165 return PTR_ERR(dc);166 }167 168 dbidev->backlight = devm_of_find_backlight(dev);169 if (IS_ERR(dbidev->backlight))170 return PTR_ERR(dbidev->backlight);171 172 device_property_read_u32(dev, "rotation", &rotation);173 174 ret = mipi_dbi_spi_init(spi, dbi, dc);175 if (ret)176 return ret;177 178 ret = mipi_dbi_dev_init(dbidev, &ili9163_pipe_funcs, &yx240qv29_mode, rotation);179 if (ret)180 return ret;181 182 drm_mode_config_reset(drm);183 184 ret = drm_dev_register(drm, 0);185 if (ret)186 return ret;187 188 drm_fbdev_dma_setup(drm, 0);189 190 return 0;191}192 193static void ili9163_remove(struct spi_device *spi)194{195 struct drm_device *drm = spi_get_drvdata(spi);196 197 drm_dev_unplug(drm);198 drm_atomic_helper_shutdown(drm);199}200 201static void ili9163_shutdown(struct spi_device *spi)202{203 drm_atomic_helper_shutdown(spi_get_drvdata(spi));204}205 206static struct spi_driver ili9163_spi_driver = {207 .driver = {208 .name = "ili9163",209 .of_match_table = ili9163_of_match,210 },211 .id_table = ili9163_id,212 .probe = ili9163_probe,213 .remove = ili9163_remove,214 .shutdown = ili9163_shutdown,215};216module_spi_driver(ili9163_spi_driver);217 218MODULE_DESCRIPTION("Ilitek ILI9163 DRM driver");219MODULE_AUTHOR("Daniel Mack <daniel@zonque.org>");220MODULE_LICENSE("GPL");221