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drm/tinydrm: Drop using tinydrm_device

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Use devm_drm_dev_init() and drop using tinydrm_device.

v2: devm_drm_dev_register() was dropped so add driver release callbacks.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-6-noralf@tronnes.org
This commit is contained in:
Noralf Trønnes 2019-02-25 15:42:30 +01:00
parent ec33f1d690
commit 3eba392281
8 changed files with 294 additions and 104 deletions
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40
drivers/gpu/drm/tinydrm/hx8357d.c
View file

@ -18,6 +18,7 @@
#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>
@ -189,6 +190,7 @@ 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",
@ -213,15 +215,25 @@ 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 = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
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");
@ -238,14 +250,31 @@ static int hx8357d_probe(struct spi_device *spi)
if (ret)
return ret;
ret = mipi_dbi_init(&spi->dev, mipi, &hx8357d_pipe_funcs,
&hx8357d_driver, &yx350hv15_mode, rotation);
ret = mipi_dbi_init(mipi, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_mode_config_reset(drm);
return devm_tinydrm_register(&mipi->tinydrm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 32);
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)
@ -260,6 +289,7 @@ static struct spi_driver hx8357d_spi_driver = {
},
.id_table = hx8357d_id,
.probe = hx8357d_probe,
.remove = hx8357d_remove,
.shutdown = hx8357d_shutdown,
};
module_spi_driver(hx8357d_spi_driver);

40
drivers/gpu/drm/tinydrm/ili9225.c
View file

@ -24,6 +24,7 @@
#include <drm/drm_damage_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
@ -339,6 +340,7 @@ static struct drm_driver ili9225_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_ATOMIC,
.fops = &ili9225_fops,
.release = mipi_dbi_release,
DRM_GEM_CMA_VMAP_DRIVER_OPS,
.name = "ili9225",
.desc = "Ilitek ILI9225",
@ -362,15 +364,25 @@ MODULE_DEVICE_TABLE(spi, ili9225_id);
static int ili9225_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct drm_device *drm;
struct mipi_dbi *mipi;
struct gpio_desc *rs;
u32 rotation = 0;
int ret;
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &ili9225_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
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");
@ -392,14 +404,31 @@ static int ili9225_probe(struct spi_device *spi)
/* override the command function set in mipi_dbi_spi_init() */
mipi->command = ili9225_dbi_command;
ret = mipi_dbi_init(&spi->dev, mipi, &ili9225_pipe_funcs,
&ili9225_driver, &ili9225_mode, rotation);
ret = mipi_dbi_init(mipi, &ili9225_pipe_funcs, &ili9225_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_mode_config_reset(drm);
return devm_tinydrm_register(&mipi->tinydrm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 32);
return 0;
}
static int ili9225_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 ili9225_shutdown(struct spi_device *spi)
@ -415,6 +444,7 @@ static struct spi_driver ili9225_spi_driver = {
},
.id_table = ili9225_id,
.probe = ili9225_probe,
.remove = ili9225_remove,
.shutdown = ili9225_shutdown,
};
module_spi_driver(ili9225_spi_driver);

40
drivers/gpu/drm/tinydrm/ili9341.c
View file

@ -17,6 +17,7 @@
#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>
@ -145,6 +146,7 @@ DEFINE_DRM_GEM_CMA_FOPS(ili9341_fops);
static struct drm_driver ili9341_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
.fops = &ili9341_fops,
.release = mipi_dbi_release,
DRM_GEM_CMA_VMAP_DRIVER_OPS,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "ili9341",
@ -169,15 +171,25 @@ MODULE_DEVICE_TABLE(spi, ili9341_id);
static int ili9341_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 = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &ili9341_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(mipi->reset)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
@ -200,14 +212,31 @@ static int ili9341_probe(struct spi_device *spi)
if (ret)
return ret;
ret = mipi_dbi_init(&spi->dev, mipi, &ili9341_pipe_funcs,
&ili9341_driver, &yx240qv29_mode, rotation);
ret = mipi_dbi_init(mipi, &ili9341_pipe_funcs, &yx240qv29_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_mode_config_reset(drm);
return devm_tinydrm_register(&mipi->tinydrm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 32);
return 0;
}
static int ili9341_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 ili9341_shutdown(struct spi_device *spi)
@ -222,6 +251,7 @@ static struct spi_driver ili9341_spi_driver = {
},
.id_table = ili9341_id,
.probe = ili9341_probe,
.remove = ili9341_remove,
.shutdown = ili9341_shutdown,
};
module_spi_driver(ili9341_spi_driver);

40
drivers/gpu/drm/tinydrm/mi0283qt.c
View file

@ -19,6 +19,7 @@
#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>
@ -154,6 +155,7 @@ static struct drm_driver mi0283qt_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_ATOMIC,
.fops = &mi0283qt_fops,
.release = mipi_dbi_release,
DRM_GEM_CMA_VMAP_DRIVER_OPS,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "mi0283qt",
@ -178,15 +180,25 @@ MODULE_DEVICE_TABLE(spi, mi0283qt_id);
static int mi0283qt_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 = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &mi0283qt_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(mipi->reset)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
@ -213,14 +225,31 @@ static int mi0283qt_probe(struct spi_device *spi)
if (ret)
return ret;
ret = mipi_dbi_init(&spi->dev, mipi, &mi0283qt_pipe_funcs,
&mi0283qt_driver, &mi0283qt_mode, rotation);
ret = mipi_dbi_init(mipi, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_mode_config_reset(drm);
return devm_tinydrm_register(&mipi->tinydrm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 32);
return 0;
}
static int mi0283qt_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 mi0283qt_shutdown(struct spi_device *spi)
@ -253,6 +282,7 @@ static struct spi_driver mi0283qt_spi_driver = {
},
.id_table = mi0283qt_id,
.probe = mi0283qt_probe,
.remove = mi0283qt_remove,
.shutdown = mi0283qt_shutdown,
};
module_spi_driver(mi0283qt_spi_driver);

67
drivers/gpu/drm/tinydrm/mipi-dbi.c
View file

@ -316,7 +316,7 @@ EXPORT_SYMBOL(mipi_dbi_enable_flush);
static void mipi_dbi_blank(struct mipi_dbi *mipi)
{
struct drm_device *drm = mipi->tinydrm.drm;
struct drm_device *drm = &mipi->drm;
u16 height = drm->mode_config.min_height;
u16 width = drm->mode_config.min_width;
size_t len = width * height * 2;
@ -357,6 +357,12 @@ void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe)
}
EXPORT_SYMBOL(mipi_dbi_pipe_disable);
static const struct drm_mode_config_funcs mipi_dbi_mode_config_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static const uint32_t mipi_dbi_formats[] = {
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
@ -364,31 +370,27 @@ static const uint32_t mipi_dbi_formats[] = {
/**
* mipi_dbi_init - MIPI DBI initialization
* @dev: Parent device
* @mipi: &mipi_dbi structure to initialize
* @pipe_funcs: Display pipe functions
* @driver: DRM driver
* @funcs: Display pipe functions
* @mode: Display mode
* @rotation: Initial rotation in degrees Counter Clock Wise
*
* This function initializes a &mipi_dbi structure and it's underlying
* @tinydrm_device. It also sets up the display pipeline.
* This function sets up a &drm_simple_display_pipe with a &drm_connector that
* has one fixed &drm_display_mode which is rotated according to @rotation.
* This mode is used to set the mode config min/max width/height properties.
* Additionally &mipi_dbi.tx_buf is allocated.
*
* Supported formats: Native RGB565 and emulated XRGB8888.
*
* Objects created by this function will be automatically freed on driver
* detach (devres).
*
* Returns:
* Zero on success, negative error code on failure.
*/
int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *pipe_funcs,
struct drm_driver *driver,
int mipi_dbi_init(struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *funcs,
const struct drm_display_mode *mode, unsigned int rotation)
{
size_t bufsize = mode->vdisplay * mode->hdisplay * sizeof(u16);
struct tinydrm_device *tdev = &mipi->tinydrm;
struct drm_device *drm = &mipi->drm;
int ret;
if (!mipi->command)
@ -396,16 +398,12 @@ int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
mutex_init(&mipi->cmdlock);
mipi->tx_buf = devm_kmalloc(dev, bufsize, GFP_KERNEL);
mipi->tx_buf = devm_kmalloc(drm->dev, bufsize, GFP_KERNEL);
if (!mipi->tx_buf)
return -ENOMEM;
ret = devm_tinydrm_init(dev, tdev, driver);
if (ret)
return ret;
/* TODO: Maybe add DRM_MODE_CONNECTOR_SPI */
ret = tinydrm_display_pipe_init(tdev->drm, &tdev->pipe, pipe_funcs,
ret = tinydrm_display_pipe_init(drm, &mipi->pipe, funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
mipi_dbi_formats,
ARRAY_SIZE(mipi_dbi_formats), mode,
@ -413,20 +411,39 @@ int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
if (ret)
return ret;
drm_plane_enable_fb_damage_clips(&tdev->pipe.plane);
drm_plane_enable_fb_damage_clips(&mipi->pipe.plane);
tdev->drm->mode_config.preferred_depth = 16;
drm->mode_config.funcs = &mipi_dbi_mode_config_funcs;
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);
drm->mode_config.preferred_depth, rotation);
return 0;
}
EXPORT_SYMBOL(mipi_dbi_init);
/**
* mipi_dbi_release - DRM driver release helper
* @drm: DRM device
*
* This function finalizes and frees &mipi_dbi.
*
* Drivers can use this as their &drm_driver->release callback.
*/
void mipi_dbi_release(struct drm_device *drm)
{
struct mipi_dbi *dbi = drm_to_mipi_dbi(drm);
DRM_DEBUG_DRIVER("\n");
drm_mode_config_cleanup(drm);
drm_dev_fini(drm);
kfree(dbi);
}
EXPORT_SYMBOL(mipi_dbi_release);
/**
* mipi_dbi_hw_reset - Hardware reset of controller
* @mipi: MIPI DBI structure
@ -479,7 +496,7 @@ EXPORT_SYMBOL(mipi_dbi_display_is_on);
static int mipi_dbi_poweron_reset_conditional(struct mipi_dbi *mipi, bool cond)
{
struct device *dev = mipi->tinydrm.drm->dev;
struct device *dev = mipi->drm.dev;
int ret;
if (mipi->regulator) {

105
drivers/gpu/drm/tinydrm/st7586.c
View file

@ -21,6 +21,7 @@
#include <drm/drm_damage_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_rect.h>
@ -262,46 +263,6 @@ static const u32 st7586_formats[] = {
DRM_FORMAT_XRGB8888,
};
static int st7586_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 + 2) / 3 * mode->hdisplay;
struct tinydrm_device *tdev = &mipi->tinydrm;
int ret;
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, driver);
if (ret)
return ret;
ret = tinydrm_display_pipe_init(tdev->drm, &tdev->pipe, pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
st7586_formats,
ARRAY_SIZE(st7586_formats),
mode, rotation);
if (ret)
return ret;
drm_plane_enable_fb_damage_clips(&tdev->pipe.plane);
tdev->drm->mode_config.preferred_depth = 32;
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 st7586_pipe_funcs = {
.enable = st7586_pipe_enable,
.disable = st7586_pipe_disable,
@ -309,6 +270,12 @@ static const struct drm_simple_display_pipe_funcs st7586_pipe_funcs = {
.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
};
static const struct drm_mode_config_funcs st7586_mode_config_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static const struct drm_display_mode st7586_mode = {
DRM_SIMPLE_MODE(178, 128, 37, 27),
};
@ -319,6 +286,7 @@ static struct drm_driver st7586_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_ATOMIC,
.fops = &st7586_fops,
.release = mipi_dbi_release,
DRM_GEM_CMA_VMAP_DRIVER_OPS,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "st7586",
@ -343,15 +311,35 @@ MODULE_DEVICE_TABLE(spi, st7586_id);
static int st7586_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct drm_device *drm;
struct mipi_dbi *mipi;
struct gpio_desc *a0;
u32 rotation = 0;
size_t bufsize;
int ret;
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &st7586_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
drm->mode_config.preferred_depth = 32;
drm->mode_config.funcs = &st7586_mode_config_funcs;
mutex_init(&mipi->cmdlock);
bufsize = (st7586_mode.vdisplay + 2) / 3 * st7586_mode.hdisplay;
mipi->tx_buf = devm_kmalloc(dev, bufsize, GFP_KERNEL);
if (!mipi->tx_buf)
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");
@ -365,6 +353,7 @@ static int st7586_probe(struct spi_device *spi)
}
device_property_read_u32(dev, "rotation", &rotation);
mipi->rotation = rotation;
ret = mipi_dbi_spi_init(spi, mipi, a0);
if (ret)
@ -382,14 +371,39 @@ static int st7586_probe(struct spi_device *spi)
*/
mipi->swap_bytes = true;
ret = st7586_init(&spi->dev, mipi, &st7586_pipe_funcs, &st7586_driver,
&st7586_mode, rotation);
ret = tinydrm_display_pipe_init(drm, &mipi->pipe, &st7586_pipe_funcs,
DRM_MODE_CONNECTOR_VIRTUAL,
st7586_formats, ARRAY_SIZE(st7586_formats),
&st7586_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_plane_enable_fb_damage_clips(&mipi->pipe.plane);
return devm_tinydrm_register(&mipi->tinydrm);
drm_mode_config_reset(drm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n",
drm->mode_config.preferred_depth, rotation);
drm_fbdev_generic_setup(drm, 32);
return 0;
}
static int st7586_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 st7586_shutdown(struct spi_device *spi)
@ -405,6 +419,7 @@ static struct spi_driver st7586_spi_driver = {
},
.id_table = st7586_id,
.probe = st7586_probe,
.remove = st7586_remove,
.shutdown = st7586_shutdown,
};
module_spi_driver(st7586_spi_driver);

40
drivers/gpu/drm/tinydrm/st7735r.c
View file

@ -16,6 +16,7 @@
#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/tinydrm/mipi-dbi.h>
@ -120,6 +121,7 @@ static struct drm_driver st7735r_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_ATOMIC,
.fops = &st7735r_fops,
.release = mipi_dbi_release,
DRM_GEM_CMA_VMAP_DRIVER_OPS,
.debugfs_init = mipi_dbi_debugfs_init,
.name = "st7735r",
@ -144,15 +146,25 @@ MODULE_DEVICE_TABLE(spi, st7735r_id);
static int st7735r_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 = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
mipi = kzalloc(sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
drm = &mipi->drm;
ret = devm_drm_dev_init(dev, drm, &st7735r_driver);
if (ret) {
kfree(mipi);
return ret;
}
drm_mode_config_init(drm);
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");
@ -178,14 +190,31 @@ static int st7735r_probe(struct spi_device *spi)
/* Cannot read from Adafruit 1.8" display via SPI */
mipi->read_commands = NULL;
ret = mipi_dbi_init(&spi->dev, mipi, &jd_t18003_t01_pipe_funcs,
&st7735r_driver, &jd_t18003_t01_mode, rotation);
ret = mipi_dbi_init(mipi, &jd_t18003_t01_pipe_funcs, &jd_t18003_t01_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi->tinydrm.drm);
drm_mode_config_reset(drm);
return devm_tinydrm_register(&mipi->tinydrm);
ret = drm_dev_register(drm, 0);
if (ret)
return ret;
spi_set_drvdata(spi, drm);
drm_fbdev_generic_setup(drm, 32);
return 0;
}
static int st7735r_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 st7735r_shutdown(struct spi_device *spi)
@ -201,6 +230,7 @@ static struct spi_driver st7735r_spi_driver = {
},
.id_table = st7735r_id,
.probe = st7735r_probe,
.remove = st7735r_remove,
.shutdown = st7735r_shutdown,
};
module_spi_driver(st7735r_spi_driver);

26
include/drm/tinydrm/mipi-dbi.h
View file

@ -12,7 +12,9 @@
#ifndef __LINUX_MIPI_DBI_H
#define __LINUX_MIPI_DBI_H
#include <drm/tinydrm/tinydrm.h>
#include <linux/mutex.h>
#include <drm/drm_device.h>
#include <drm/drm_simple_kms_helper.h>
struct drm_rect;
struct spi_device;
@ -21,7 +23,6 @@ struct regulator;
/**
* struct mipi_dbi - MIPI DBI controller
* @tinydrm: tinydrm base
* @spi: SPI device
* @enabled: Pipeline is enabled
* @cmdlock: Command lock
@ -39,7 +40,16 @@ struct regulator;
* @regulator: power regulator (optional)
*/
struct mipi_dbi {
struct tinydrm_device tinydrm;
/**
* @drm: DRM device
*/
struct drm_device drm;
/**
* @pipe: Display pipe structure
*/
struct drm_simple_display_pipe pipe;
struct spi_device *spi;
bool enabled;
struct mutex cmdlock;
@ -58,17 +68,15 @@ struct mipi_dbi {
static inline struct mipi_dbi *drm_to_mipi_dbi(struct drm_device *drm)
{
struct tinydrm_device *tdev = drm->dev_private;
return container_of(tdev, struct mipi_dbi, tinydrm);
return container_of(drm, struct mipi_dbi, drm);
}
int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *mipi,
struct gpio_desc *dc);
int mipi_dbi_init(struct device *dev, struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *pipe_funcs,
struct drm_driver *driver,
int mipi_dbi_init(struct mipi_dbi *mipi,
const struct drm_simple_display_pipe_funcs *funcs,
const struct drm_display_mode *mode, unsigned int rotation);
void mipi_dbi_release(struct drm_device *drm);
void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state);
void mipi_dbi_enable_flush(struct mipi_dbi *mipi,