diff options
Diffstat (limited to 'drivers/gpu/drm/tinydrm/ili9225.c')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/ili9225.c | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c deleted file mode 100644 index 78f7c2d1b449..000000000000 --- a/drivers/gpu/drm/tinydrm/ili9225.c +++ /dev/null @@ -1,455 +0,0 @@ -/* - * DRM driver for Ilitek ILI9225 panels - * - * Copyright 2017 David Lechner <david@lechnology.com> - * - * Some code copied from mipi-dbi.c - * Copyright 2016 Noralf Trønnes - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#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/drm_fb_cma_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -#define ILI9225_DRIVER_READ_CODE 0x00 -#define ILI9225_DRIVER_OUTPUT_CONTROL 0x01 -#define ILI9225_LCD_AC_DRIVING_CONTROL 0x02 -#define ILI9225_ENTRY_MODE 0x03 -#define ILI9225_DISPLAY_CONTROL_1 0x07 -#define ILI9225_BLANK_PERIOD_CONTROL_1 0x08 -#define ILI9225_FRAME_CYCLE_CONTROL 0x0b -#define ILI9225_INTERFACE_CONTROL 0x0c -#define ILI9225_OSCILLATION_CONTROL 0x0f -#define ILI9225_POWER_CONTROL_1 0x10 -#define ILI9225_POWER_CONTROL_2 0x11 -#define ILI9225_POWER_CONTROL_3 0x12 -#define ILI9225_POWER_CONTROL_4 0x13 -#define ILI9225_POWER_CONTROL_5 0x14 -#define ILI9225_VCI_RECYCLING 0x15 -#define ILI9225_RAM_ADDRESS_SET_1 0x20 -#define ILI9225_RAM_ADDRESS_SET_2 0x21 -#define ILI9225_WRITE_DATA_TO_GRAM 0x22 -#define ILI9225_SOFTWARE_RESET 0x28 -#define ILI9225_GATE_SCAN_CONTROL 0x30 -#define ILI9225_VERTICAL_SCROLL_1 0x31 -#define ILI9225_VERTICAL_SCROLL_2 0x32 -#define ILI9225_VERTICAL_SCROLL_3 0x33 -#define ILI9225_PARTIAL_DRIVING_POS_1 0x34 -#define ILI9225_PARTIAL_DRIVING_POS_2 0x35 -#define ILI9225_HORIZ_WINDOW_ADDR_1 0x36 -#define ILI9225_HORIZ_WINDOW_ADDR_2 0x37 -#define ILI9225_VERT_WINDOW_ADDR_1 0x38 -#define ILI9225_VERT_WINDOW_ADDR_2 0x39 -#define ILI9225_GAMMA_CONTROL_1 0x50 -#define ILI9225_GAMMA_CONTROL_2 0x51 -#define ILI9225_GAMMA_CONTROL_3 0x52 -#define ILI9225_GAMMA_CONTROL_4 0x53 -#define ILI9225_GAMMA_CONTROL_5 0x54 -#define ILI9225_GAMMA_CONTROL_6 0x55 -#define ILI9225_GAMMA_CONTROL_7 0x56 -#define ILI9225_GAMMA_CONTROL_8 0x57 -#define ILI9225_GAMMA_CONTROL_9 0x58 -#define ILI9225_GAMMA_CONTROL_10 0x59 - -static inline int ili9225_command(struct mipi_dbi *mipi, u8 cmd, u16 data) -{ - u8 par[2] = { data >> 8, data & 0xff }; - - return mipi_dbi_command_buf(mipi, cmd, par, 2); -} - -static int ili9225_fb_dirty(struct drm_framebuffer *fb, - struct drm_file *file_priv, unsigned int flags, - unsigned int color, struct drm_clip_rect *clips, - unsigned int num_clips) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct tinydrm_device *tdev = fb->dev->dev_private; - struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); - bool swap = mipi->swap_bytes; - struct drm_clip_rect clip; - u16 x_start, y_start; - u16 x1, x2, y1, y2; - int ret = 0; - bool full; - void *tr; - - if (!mipi->enabled) - return 0; - - full = tinydrm_merge_clips(&clip, clips, num_clips, flags, - fb->width, fb->height); - - DRM_DEBUG("Flushing [FB:%d] x1=%u, x2=%u, y1=%u, y2=%u\n", fb->base.id, - clip.x1, clip.x2, clip.y1, clip.y2); - - if (!mipi->dc || !full || swap || - fb->format->format == DRM_FORMAT_XRGB8888) { - tr = mipi->tx_buf; - ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, &clip, swap); - if (ret) - return ret; - } else { - tr = cma_obj->vaddr; - } - - switch (mipi->rotation) { - default: - x1 = clip.x1; - x2 = clip.x2 - 1; - y1 = clip.y1; - y2 = clip.y2 - 1; - x_start = x1; - y_start = y1; - break; - case 90: - x1 = clip.y1; - x2 = clip.y2 - 1; - y1 = fb->width - clip.x2; - y2 = fb->width - clip.x1 - 1; - x_start = x1; - y_start = y2; - break; - case 180: - x1 = fb->width - clip.x2; - x2 = fb->width - clip.x1 - 1; - y1 = fb->height - clip.y2; - y2 = fb->height - clip.y1 - 1; - x_start = x2; - y_start = y2; - break; - case 270: - x1 = fb->height - clip.y2; - x2 = fb->height - clip.y1 - 1; - y1 = clip.x1; - y2 = clip.x2 - 1; - x_start = x2; - y_start = y1; - break; - } - - ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_1, x2); - ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_2, x1); - ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_1, y2); - ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_2, y1); - - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, x_start); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, y_start); - - ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr, - (clip.x2 - clip.x1) * (clip.y2 - clip.y1) * 2); - - return ret; -} - -static const struct drm_framebuffer_funcs ili9225_fb_funcs = { - .destroy = drm_gem_fb_destroy, - .create_handle = drm_gem_fb_create_handle, - .dirty = tinydrm_fb_dirty, -}; - -static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct tinydrm_device *tdev = pipe_to_tinydrm(pipe); - struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); - struct device *dev = tdev->drm->dev; - int ret; - u8 am_id; - - DRM_DEBUG_KMS("\n"); - - mipi_dbi_hw_reset(mipi); - - /* - * There don't seem to be two example init sequences that match, so - * using the one from the popular Arduino library for this display. - * https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp - */ - - ret = ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0000); - if (ret) { - DRM_DEV_ERROR(dev, "Error sending command %d\n", ret); - return; - } - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x0000); - - msleep(40); - - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0018); - ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x6121); - ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x006f); - ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x495f); - ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0800); - - msleep(10); - - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x103b); - - msleep(50); - - switch (mipi->rotation) { - default: - am_id = 0x30; - break; - case 90: - am_id = 0x18; - break; - case 180: - am_id = 0x00; - break; - case 270: - am_id = 0x28; - break; - } - ili9225_command(mipi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c); - ili9225_command(mipi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100); - ili9225_command(mipi, ILI9225_ENTRY_MODE, 0x1000 | am_id); - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000); - ili9225_command(mipi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808); - ili9225_command(mipi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100); - ili9225_command(mipi, ILI9225_INTERFACE_CONTROL, 0x0000); - ili9225_command(mipi, ILI9225_OSCILLATION_CONTROL, 0x0d01); - ili9225_command(mipi, ILI9225_VCI_RECYCLING, 0x0020); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, 0x0000); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, 0x0000); - - ili9225_command(mipi, ILI9225_GATE_SCAN_CONTROL, 0x0000); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_1, 0x00db); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_2, 0x0000); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_3, 0x0000); - ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db); - ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000); - - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_1, 0x0000); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_2, 0x0808); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_3, 0x080a); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_4, 0x000a); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_5, 0x0a08); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_6, 0x0808); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_7, 0x0000); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_8, 0x0a00); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_9, 0x0710); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_10, 0x0710); - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0012); - - msleep(50); - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x1017); - - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -} - -static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe) -{ - struct tinydrm_device *tdev = pipe_to_tinydrm(pipe); - struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); - - DRM_DEBUG_KMS("\n"); - - if (!mipi->enabled) - return; - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000); - msleep(50); - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0007); - msleep(50); - ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0a02); - - mipi->enabled = false; -} - -static int ili9225_dbi_command(struct mipi_dbi *mipi, u8 cmd, u8 *par, - size_t num) -{ - struct spi_device *spi = mipi->spi; - unsigned int bpw = 8; - u32 speed_hz; - int ret; - - gpiod_set_value_cansleep(mipi->dc, 0); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1); - ret = tinydrm_spi_transfer(spi, speed_hz, NULL, 8, &cmd, 1); - if (ret || !num) - return ret; - - if (cmd == ILI9225_WRITE_DATA_TO_GRAM && !mipi->swap_bytes) - bpw = 16; - - gpiod_set_value_cansleep(mipi->dc, 1); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num); - - return tinydrm_spi_transfer(spi, speed_hz, NULL, bpw, par, num); -} - -static const u32 ili9225_formats[] = { - DRM_FORMAT_RGB565, - DRM_FORMAT_XRGB8888, -}; - -static int ili9225_init(struct device *dev, struct mipi_dbi *mipi, - const struct drm_simple_display_pipe_funcs *pipe_funcs, - struct drm_driver *driver, - const struct drm_display_mode *mode, - unsigned int rotation) -{ - size_t bufsize = mode->vdisplay * mode->hdisplay * sizeof(u16); - struct tinydrm_device *tdev = &mipi->tinydrm; - int ret; - - if (!mipi->command) - return -EINVAL; - - mutex_init(&mipi->cmdlock); - - mipi->tx_buf = devm_kmalloc(dev, bufsize, GFP_KERNEL); - if (!mipi->tx_buf) - return -ENOMEM; - - ret = devm_tinydrm_init(dev, tdev, &ili9225_fb_funcs, driver); - if (ret) - return ret; - - tdev->fb_dirty = ili9225_fb_dirty; - - ret = tinydrm_display_pipe_init(tdev, pipe_funcs, - DRM_MODE_CONNECTOR_VIRTUAL, - ili9225_formats, - ARRAY_SIZE(ili9225_formats), mode, - rotation); - if (ret) - return ret; - - tdev->drm->mode_config.preferred_depth = 16; - mipi->rotation = rotation; - - drm_mode_config_reset(tdev->drm); - - DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n", - tdev->drm->mode_config.preferred_depth, rotation); - - return 0; -} - -static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = { - .enable = ili9225_pipe_enable, - .disable = ili9225_pipe_disable, - .update = tinydrm_display_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode ili9225_mode = { - TINYDRM_MODE(176, 220, 35, 44), -}; - -DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops); - -static struct drm_driver ili9225_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &ili9225_fops, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .name = "ili9225", - .desc = "Ilitek ILI9225", - .date = "20171106", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id ili9225_of_match[] = { - { .compatible = "vot,v220hf01a-t" }, - {}, -}; -MODULE_DEVICE_TABLE(of, ili9225_of_match); - -static const struct spi_device_id ili9225_id[] = { - { "v220hf01a-t", 0 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, ili9225_id); - -static int ili9225_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct mipi_dbi *mipi; - struct gpio_desc *rs; - u32 rotation = 0; - int ret; - - mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW); - if (IS_ERR(rs)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n"); - return PTR_ERR(rs); - } - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, rs); - if (ret) - return ret; - - /* override the command function set in mipi_dbi_spi_init() */ - mipi->command = ili9225_dbi_command; - - ret = ili9225_init(&spi->dev, mipi, &ili9225_pipe_funcs, - &ili9225_driver, &ili9225_mode, rotation); - if (ret) - return ret; - - spi_set_drvdata(spi, mipi); - - return devm_tinydrm_register(&mipi->tinydrm); -} - -static void ili9225_shutdown(struct spi_device *spi) -{ - struct mipi_dbi *mipi = spi_get_drvdata(spi); - - tinydrm_shutdown(&mipi->tinydrm); -} - -static struct spi_driver ili9225_spi_driver = { - .driver = { - .name = "ili9225", - .owner = THIS_MODULE, - .of_match_table = ili9225_of_match, - }, - .id_table = ili9225_id, - .probe = ili9225_probe, - .shutdown = ili9225_shutdown, -}; -module_spi_driver(ili9225_spi_driver); - -MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); |