| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Eric Anholt | 956 | 99.79% | 1 | 50.00% |
| Noralf Trönnes | 2 | 0.21% | 1 | 50.00% |
| Total | 958 | 2 |
// 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_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 tinydrm_device *tdev = pipe_to_tinydrm(pipe); struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); u8 addr_mode; int ret; DRM_DEBUG_KMS("\n"); ret = mipi_dbi_poweron_conditional_reset(mipi); if (ret < 0) return; 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); } static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = { .enable = yx240qv29_enable, .disable = mipi_dbi_pipe_disable, .update = tinydrm_display_pipe_update, .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, }; static const struct drm_display_mode yx350hv15_mode = { TINYDRM_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, 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 mipi_dbi *mipi; struct gpio_desc *dc; u32 rotation = 0; int ret; mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL); if (!mipi) return -ENOMEM; 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(&spi->dev, mipi, &hx8357d_pipe_funcs, &hx8357d_driver, &yx350hv15_mode, rotation); if (ret) return ret; spi_set_drvdata(spi, mipi); return devm_tinydrm_register(&mipi->tinydrm); } static void hx8357d_shutdown(struct spi_device *spi) { struct mipi_dbi *mipi = spi_get_drvdata(spi); tinydrm_shutdown(&mipi->tinydrm); } static struct spi_driver hx8357d_spi_driver = { .driver = { .name = "hx8357d", .of_match_table = hx8357d_of_match, }, .id_table = hx8357d_id, .probe = hx8357d_probe, .shutdown = hx8357d_shutdown, }; module_spi_driver(hx8357d_spi_driver); MODULE_DESCRIPTION("HX8357D DRM driver"); MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); MODULE_LICENSE("GPL");
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