diff options
Diffstat (limited to 'drivers/gpu/drm/tinydrm/hx8357d.c')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/hx8357d.c | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c deleted file mode 100644 index 5773d0fb6ca1..000000000000 --- a/drivers/gpu/drm/tinydrm/hx8357d.c +++ /dev/null @@ -1,304 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * DRM driver for the HX8357D LCD controller - * - * Copyright 2018 Broadcom - * Copyright 2018 David Lechner <david@lechnology.com> - * Copyright 2016 Noralf Trønnes - * Copyright (C) 2015 Adafruit Industries - * Copyright (C) 2013 Christian Vogelgsang - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_modeset_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> -#include <video/mipi_display.h> - -#define HX8357D_SETOSC 0xb0 -#define HX8357D_SETPOWER 0xb1 -#define HX8357D_SETRGB 0xb3 -#define HX8357D_SETCYC 0xb3 -#define HX8357D_SETCOM 0xb6 -#define HX8357D_SETEXTC 0xb9 -#define HX8357D_SETSTBA 0xc0 -#define HX8357D_SETPANEL 0xcc -#define HX8357D_SETGAMMA 0xe0 - -#define HX8357D_MADCTL_MY 0x80 -#define HX8357D_MADCTL_MX 0x40 -#define HX8357D_MADCTL_MV 0x20 -#define HX8357D_MADCTL_ML 0x10 -#define HX8357D_MADCTL_RGB 0x00 -#define HX8357D_MADCTL_BGR 0x08 -#define HX8357D_MADCTL_MH 0x04 - -static void yx240qv29_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - u8 addr_mode; - int ret, idx; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_conditional_reset(mipi); - if (ret < 0) - goto out_exit; - if (ret == 1) - goto out_enable; - - /* setextc */ - mipi_dbi_command(mipi, HX8357D_SETEXTC, 0xFF, 0x83, 0x57); - msleep(150); - - /* setRGB which also enables SDO */ - mipi_dbi_command(mipi, HX8357D_SETRGB, 0x00, 0x00, 0x06, 0x06); - - /* -1.52V */ - mipi_dbi_command(mipi, HX8357D_SETCOM, 0x25); - - /* Normal mode 70Hz, Idle mode 55 Hz */ - mipi_dbi_command(mipi, HX8357D_SETOSC, 0x68); - - /* Set Panel - BGR, Gate direction swapped */ - mipi_dbi_command(mipi, HX8357D_SETPANEL, 0x05); - - mipi_dbi_command(mipi, HX8357D_SETPOWER, - 0x00, /* Not deep standby */ - 0x15, /* BT */ - 0x1C, /* VSPR */ - 0x1C, /* VSNR */ - 0x83, /* AP */ - 0xAA); /* FS */ - - mipi_dbi_command(mipi, HX8357D_SETSTBA, - 0x50, /* OPON normal */ - 0x50, /* OPON idle */ - 0x01, /* STBA */ - 0x3C, /* STBA */ - 0x1E, /* STBA */ - 0x08); /* GEN */ - - mipi_dbi_command(mipi, HX8357D_SETCYC, - 0x02, /* NW 0x02 */ - 0x40, /* RTN */ - 0x00, /* DIV */ - 0x2A, /* DUM */ - 0x2A, /* DUM */ - 0x0D, /* GDON */ - 0x78); /* GDOFF */ - - mipi_dbi_command(mipi, HX8357D_SETGAMMA, - 0x02, - 0x0A, - 0x11, - 0x1d, - 0x23, - 0x35, - 0x41, - 0x4b, - 0x4b, - 0x42, - 0x3A, - 0x27, - 0x1B, - 0x08, - 0x09, - 0x03, - 0x02, - 0x0A, - 0x11, - 0x1d, - 0x23, - 0x35, - 0x41, - 0x4b, - 0x4b, - 0x42, - 0x3A, - 0x27, - 0x1B, - 0x08, - 0x09, - 0x03, - 0x00, - 0x01); - - /* 16 bit */ - mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, - MIPI_DCS_PIXEL_FMT_16BIT); - - /* TE off */ - mipi_dbi_command(mipi, MIPI_DCS_SET_TEAR_ON, 0x00); - - /* tear line */ - mipi_dbi_command(mipi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x02); - - /* Exit Sleep */ - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(150); - - /* display on */ - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); - usleep_range(5000, 7000); - -out_enable: - switch (mipi->rotation) { - default: - addr_mode = HX8357D_MADCTL_MX | HX8357D_MADCTL_MY; - break; - case 90: - addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MY; - break; - case 180: - addr_mode = 0; - break; - case 270: - addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MX; - break; - } - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = { - .enable = yx240qv29_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode yx350hv15_mode = { - DRM_SIMPLE_MODE(320, 480, 60, 75), -}; - -DEFINE_DRM_GEM_CMA_FOPS(hx8357d_fops); - -static struct drm_driver hx8357d_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC, - .fops = &hx8357d_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "hx8357d", - .desc = "HX8357D", - .date = "20181023", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id hx8357d_of_match[] = { - { .compatible = "adafruit,yx350hv15" }, - { } -}; -MODULE_DEVICE_TABLE(of, hx8357d_of_match); - -static const struct spi_device_id hx8357d_id[] = { - { "yx350hv15", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, hx8357d_id); - -static int hx8357d_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &hx8357d_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); - return PTR_ERR(dc); - } - - mipi->backlight = devm_of_find_backlight(dev); - if (IS_ERR(mipi->backlight)) - return PTR_ERR(mipi->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, dc); - if (ret) - return ret; - - ret = mipi_dbi_init(mipi, &hx8357d_pipe_funcs, &yx350hv15_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_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int hx8357d_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void hx8357d_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver hx8357d_spi_driver = { - .driver = { - .name = "hx8357d", - .of_match_table = hx8357d_of_match, - }, - .id_table = hx8357d_id, - .probe = hx8357d_probe, - .remove = hx8357d_remove, - .shutdown = hx8357d_shutdown, -}; -module_spi_driver(hx8357d_spi_driver); - -MODULE_DESCRIPTION("HX8357D DRM driver"); -MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); -MODULE_LICENSE("GPL"); |