diff options
Diffstat (limited to 'drivers/gpu/drm/tiny/ili9486.c')
| -rw-r--r-- | drivers/gpu/drm/tiny/ili9486.c | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/drivers/gpu/drm/tiny/ili9486.c b/drivers/gpu/drm/tiny/ili9486.c index 75aa1476c66c..1e411a0f4567 100644 --- a/drivers/gpu/drm/tiny/ili9486.c +++ b/drivers/gpu/drm/tiny/ili9486.c @@ -14,14 +14,16 @@ #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_fb_helper.h> +#include <drm/drm_fbdev_dma.h> #include <drm/drm_gem_atomic_helper.h> -#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_gem_dma_helper.h> #include <drm/drm_managed.h> #include <drm/drm_mipi_dbi.h> #include <drm/drm_modeset_helper.h> +#include <drm/drm_print.h> #define ILI9486_ITFCTR1 0xb0 #define ILI9486_PWCTRL1 0xc2 @@ -43,6 +45,7 @@ static int waveshare_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, size_t num) { struct spi_device *spi = mipi->spi; + unsigned int bpw = 8; void *data = par; u32 speed_hz; int i, ret; @@ -56,13 +59,13 @@ static int waveshare_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, * The displays are Raspberry Pi HATs and connected to the 8-bit only * SPI controller, so 16-bit command and parameters need byte swapping * before being transferred as 8-bit on the big endian SPI bus. - * Pixel data bytes have already been swapped before this function is - * called. */ buf[0] = cpu_to_be16(*cmd); + spi_bus_lock(spi->controller); gpiod_set_value_cansleep(mipi->dc, 0); speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 2); ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, buf, 2); + spi_bus_unlock(spi->controller); if (ret || !num) goto free; @@ -71,12 +74,20 @@ static int waveshare_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, for (i = 0; i < num; i++) buf[i] = cpu_to_be16(par[i]); num *= 2; - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num); data = buf; } + /* + * Check whether pixel data bytes needs to be swapped or not + */ + if (*cmd == MIPI_DCS_WRITE_MEMORY_START && !mipi->swap_bytes) + bpw = 16; + + spi_bus_lock(spi->controller); gpiod_set_value_cansleep(mipi->dc, 1); - ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, data, num); + speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num); + ret = mipi_dbi_spi_transfer(spi, speed_hz, bpw, data, num); + spi_bus_unlock(spi->controller); free: kfree(buf); @@ -150,26 +161,23 @@ static void waveshare_enable(struct drm_simple_display_pipe *pipe, } static const struct drm_simple_display_pipe_funcs waveshare_pipe_funcs = { - .enable = waveshare_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_simple_display_pipe_prepare_fb, + DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS(waveshare_enable), }; static const struct drm_display_mode waveshare_mode = { DRM_SIMPLE_MODE(480, 320, 73, 49), }; -DEFINE_DRM_GEM_CMA_FOPS(ili9486_fops); +DEFINE_DRM_GEM_DMA_FOPS(ili9486_fops); static const struct drm_driver ili9486_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, .fops = &ili9486_fops, - DRM_GEM_CMA_DRIVER_OPS_VMAP, + DRM_GEM_DMA_DRIVER_OPS_VMAP, + DRM_FBDEV_DMA_DRIVER_OPS, .debugfs_init = mipi_dbi_debugfs_init, .name = "ili9486", .desc = "Ilitek ILI9486", - .date = "20200118", .major = 1, .minor = 0, }; @@ -183,6 +191,8 @@ MODULE_DEVICE_TABLE(of, ili9486_of_match); static const struct spi_device_id ili9486_id[] = { { "ili9486", 0 }, + { "rpi-lcd-35", 0 }, + { "piscreen", 0 }, { } }; MODULE_DEVICE_TABLE(spi, ili9486_id); @@ -239,19 +249,17 @@ static int ili9486_probe(struct spi_device *spi) spi_set_drvdata(spi, drm); - drm_fbdev_generic_setup(drm, 0); + drm_client_setup(drm, NULL); return 0; } -static int ili9486_remove(struct spi_device *spi) +static void ili9486_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 ili9486_shutdown(struct spi_device *spi) |