diff options
Diffstat (limited to 'drivers/gpu/drm/tiny/st7735r.c')
| -rw-r--r-- | drivers/gpu/drm/tiny/st7735r.c | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/drivers/gpu/drm/tiny/st7735r.c b/drivers/gpu/drm/tiny/st7735r.c deleted file mode 100644 index 1d60f6e5b3bc..000000000000 --- a/drivers/gpu/drm/tiny/st7735r.c +++ /dev/null @@ -1,277 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * DRM driver for display panels connected to a Sitronix ST7715R or ST7735R - * display controller in SPI mode. - * - * Copyright 2017 David Lechner <david@lechnology.com> - * Copyright (C) 2019 Glider bvba - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> -#include <video/mipi_display.h> - -#include <drm/clients/drm_client_setup.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fbdev_dma.h> -#include <drm/drm_gem_atomic_helper.h> -#include <drm/drm_gem_dma_helper.h> -#include <drm/drm_managed.h> -#include <drm/drm_mipi_dbi.h> - -#define ST7735R_FRMCTR1 0xb1 -#define ST7735R_FRMCTR2 0xb2 -#define ST7735R_FRMCTR3 0xb3 -#define ST7735R_INVCTR 0xb4 -#define ST7735R_PWCTR1 0xc0 -#define ST7735R_PWCTR2 0xc1 -#define ST7735R_PWCTR3 0xc2 -#define ST7735R_PWCTR4 0xc3 -#define ST7735R_PWCTR5 0xc4 -#define ST7735R_VMCTR1 0xc5 -#define ST7735R_GAMCTRP1 0xe0 -#define ST7735R_GAMCTRN1 0xe1 - -#define ST7735R_MY BIT(7) -#define ST7735R_MX BIT(6) -#define ST7735R_MV BIT(5) -#define ST7735R_RGB BIT(3) - -struct st7735r_cfg { - const struct drm_display_mode mode; - unsigned int left_offset; - unsigned int top_offset; - unsigned int write_only:1; - unsigned int rgb:1; /* RGB (vs. BGR) */ -}; - -struct st7735r_priv { - struct mipi_dbi_dev dbidev; /* Must be first for .release() */ - const struct st7735r_cfg *cfg; -}; - -static void st7735r_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev); - struct st7735r_priv *priv = container_of(dbidev, struct st7735r_priv, - dbidev); - struct mipi_dbi *dbi = &dbidev->dbi; - int ret, idx; - u8 addr_mode; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_reset(dbidev); - if (ret) - goto out_exit; - - msleep(150); - - mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(500); - - mipi_dbi_command(dbi, ST7735R_FRMCTR1, 0x01, 0x2c, 0x2d); - mipi_dbi_command(dbi, ST7735R_FRMCTR2, 0x01, 0x2c, 0x2d); - mipi_dbi_command(dbi, ST7735R_FRMCTR3, 0x01, 0x2c, 0x2d, 0x01, 0x2c, - 0x2d); - mipi_dbi_command(dbi, ST7735R_INVCTR, 0x07); - mipi_dbi_command(dbi, ST7735R_PWCTR1, 0xa2, 0x02, 0x84); - mipi_dbi_command(dbi, ST7735R_PWCTR2, 0xc5); - mipi_dbi_command(dbi, ST7735R_PWCTR3, 0x0a, 0x00); - mipi_dbi_command(dbi, ST7735R_PWCTR4, 0x8a, 0x2a); - mipi_dbi_command(dbi, ST7735R_PWCTR5, 0x8a, 0xee); - mipi_dbi_command(dbi, ST7735R_VMCTR1, 0x0e); - mipi_dbi_command(dbi, MIPI_DCS_EXIT_INVERT_MODE); - switch (dbidev->rotation) { - default: - addr_mode = ST7735R_MX | ST7735R_MY; - break; - case 90: - addr_mode = ST7735R_MX | ST7735R_MV; - break; - case 180: - addr_mode = 0; - break; - case 270: - addr_mode = ST7735R_MY | ST7735R_MV; - break; - } - - if (priv->cfg->rgb) - addr_mode |= ST7735R_RGB; - - mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, - MIPI_DCS_PIXEL_FMT_16BIT); - mipi_dbi_command(dbi, ST7735R_GAMCTRP1, 0x02, 0x1c, 0x07, 0x12, 0x37, - 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2b, 0x39, 0x00, 0x01, - 0x03, 0x10); - mipi_dbi_command(dbi, ST7735R_GAMCTRN1, 0x03, 0x1d, 0x07, 0x06, 0x2e, - 0x2c, 0x29, 0x2d, 0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00, - 0x02, 0x10); - mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON); - - msleep(100); - - mipi_dbi_command(dbi, MIPI_DCS_ENTER_NORMAL_MODE); - - msleep(20); - - mipi_dbi_enable_flush(dbidev, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs st7735r_pipe_funcs = { - DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS(st7735r_pipe_enable), -}; - -static const struct st7735r_cfg jd_t18003_t01_cfg = { - .mode = { DRM_SIMPLE_MODE(128, 160, 28, 35) }, - /* Cannot read from Adafruit 1.8" display via SPI */ - .write_only = true, -}; - -static const struct st7735r_cfg rh128128t_cfg = { - .mode = { DRM_SIMPLE_MODE(128, 128, 25, 26) }, - .left_offset = 2, - .top_offset = 3, - .rgb = true, -}; - -DEFINE_DRM_GEM_DMA_FOPS(st7735r_fops); - -static const struct drm_driver st7735r_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, - .fops = &st7735r_fops, - DRM_GEM_DMA_DRIVER_OPS_VMAP, - DRM_FBDEV_DMA_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "st7735r", - .desc = "Sitronix ST7735R", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id st7735r_of_match[] = { - { .compatible = "jianda,jd-t18003-t01", .data = &jd_t18003_t01_cfg }, - { .compatible = "okaya,rh128128t", .data = &rh128128t_cfg }, - { }, -}; -MODULE_DEVICE_TABLE(of, st7735r_of_match); - -static const struct spi_device_id st7735r_id[] = { - { "jd-t18003-t01", (uintptr_t)&jd_t18003_t01_cfg }, - { "rh128128t", (uintptr_t)&rh128128t_cfg }, - { }, -}; -MODULE_DEVICE_TABLE(spi, st7735r_id); - -static int st7735r_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - const struct st7735r_cfg *cfg; - struct mipi_dbi_dev *dbidev; - struct st7735r_priv *priv; - struct drm_device *drm; - struct mipi_dbi *dbi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - cfg = device_get_match_data(&spi->dev); - if (!cfg) - cfg = (void *)spi_get_device_id(spi)->driver_data; - - priv = devm_drm_dev_alloc(dev, &st7735r_driver, - struct st7735r_priv, dbidev.drm); - if (IS_ERR(priv)) - return PTR_ERR(priv); - - dbidev = &priv->dbidev; - priv->cfg = cfg; - - dbi = &dbidev->dbi; - drm = &dbidev->drm; - - dbi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(dbi->reset)) - return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n"); - - dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) - return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n"); - - dbidev->backlight = devm_of_find_backlight(dev); - if (IS_ERR(dbidev->backlight)) - return PTR_ERR(dbidev->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, dbi, dc); - if (ret) - return ret; - - if (cfg->write_only) - dbi->read_commands = NULL; - - dbidev->left_offset = cfg->left_offset; - dbidev->top_offset = cfg->top_offset; - - ret = mipi_dbi_dev_init(dbidev, &st7735r_pipe_funcs, &cfg->mode, - rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_client_setup(drm, NULL); - - return 0; -} - -static void st7735r_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); -} - -static void st7735r_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver st7735r_spi_driver = { - .driver = { - .name = "st7735r", - .of_match_table = st7735r_of_match, - }, - .id_table = st7735r_id, - .probe = st7735r_probe, - .remove = st7735r_remove, - .shutdown = st7735r_shutdown, -}; -module_spi_driver(st7735r_spi_driver); - -MODULE_DESCRIPTION("Sitronix ST7735R DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); |