Message ID | 1511122328-31133-1-git-send-email-david@lechnology.com |
---|---|
Headers | show |
Series | DRM driver for ILI9225 display panels | expand |
Den 19.11.2017 21.12, skrev David Lechner: > This exports the mipi_dbi_buf_copy() and mipi_dbi_spi_cmd_max_speed() > functions so that they can be shared with other drivers. > > Signed-off-by: David Lechner <david@lechnology.com> > --- Reviewed-by: Noralf Trønnes <noralf@tronnes.org> > v2 changes: > * new patch in v2 > > drivers/gpu/drm/tinydrm/mipi-dbi.c | 24 ++++++++++++++++++++---- > include/drm/tinydrm/mipi-dbi.h | 4 +++- > 2 files changed, 23 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c > index 347f9b2..aa6b6ce 100644 > --- a/drivers/gpu/drm/tinydrm/mipi-dbi.c > +++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c > @@ -154,8 +154,18 @@ int mipi_dbi_command_buf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len) > } > EXPORT_SYMBOL(mipi_dbi_command_buf); > > -static int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, > - struct drm_clip_rect *clip, bool swap) > +/** > + * mipi_dbi_buf_copy - Copy a framebuffer, transforming it if necessary > + * @dst: The destination buffer > + * @fb: The source framebuffer > + * @clip: Clipping rectangle of the area to be copied > + * @swap: When true, swap MSB/LSB of 16-bit values > + * > + * Returns: > + * Zero on success, negative error code on failure. > + */ > +int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, > + struct drm_clip_rect *clip, bool swap) > { > struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); > struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; > @@ -192,6 +202,7 @@ static int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, > DMA_FROM_DEVICE); > return ret; > } > +EXPORT_SYMBOL(mipi_dbi_buf_copy); > > static int mipi_dbi_fb_dirty(struct drm_framebuffer *fb, > struct drm_file *file_priv, > @@ -444,18 +455,23 @@ EXPORT_SYMBOL(mipi_dbi_display_is_on); > > #if IS_ENABLED(CONFIG_SPI) > > -/* > +/** > + * mipi_dbi_spi_cmd_max_speed - get the maximum SPI bus speed > + * @spi: SPI device > + * @len: The transfer buffer length. > + * > * Many controllers have a max speed of 10MHz, but can be pushed way beyond > * that. Increase reliability by running pixel data at max speed and the rest > * at 10MHz, preventing transfer glitches from messing up the init settings. > */ > -static u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len) > +u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len) > { > if (len > 64) > return 0; /* use default */ > > return min_t(u32, 10000000, spi->max_speed_hz); > } > +EXPORT_SYMBOL(mipi_dbi_spi_cmd_max_speed); > > /* > * MIPI DBI Type C Option 1 > diff --git a/include/drm/tinydrm/mipi-dbi.h b/include/drm/tinydrm/mipi-dbi.h > index 83346dd..5d0e82b 100644 > --- a/include/drm/tinydrm/mipi-dbi.h > +++ b/include/drm/tinydrm/mipi-dbi.h > @@ -72,10 +72,12 @@ void mipi_dbi_pipe_enable(struct drm_simple_display_pipe *pipe, > void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe); > void mipi_dbi_hw_reset(struct mipi_dbi *mipi); > bool mipi_dbi_display_is_on(struct mipi_dbi *mipi); > +u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len); > > int mipi_dbi_command_read(struct mipi_dbi *mipi, u8 cmd, u8 *val); > int mipi_dbi_command_buf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len); > - > +int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, > + struct drm_clip_rect *clip, bool swap); > /** > * mipi_dbi_command - MIPI DCS command with optional parameter(s) > * @mipi: MIPI structure -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Den 19.11.2017 21.12, skrev David Lechner: > This adds a new driver for display panels based on the Ilitek ILI9225 > controller. > > This was developed for a no-name panel with a red PCB that is commonly > marketed for Arduino. See <https://github.com/Nkawu/TFT_22_ILI9225>. > > Signed-off-by: David Lechner <david@lechnology.com> > --- Reviewed-by: Noralf Trønnes <noralf@tronnes.org> > v2 changes: > * use exported mipi_dbi_* functions from patch 3/4 > * new ili9225_command function > > MAINTAINERS | 6 + > drivers/gpu/drm/tinydrm/Kconfig | 10 + > drivers/gpu/drm/tinydrm/Makefile | 1 + > drivers/gpu/drm/tinydrm/ili9225.c | 468 ++++++++++++++++++++++++++++++++++++++ > 4 files changed, 485 insertions(+) > create mode 100644 drivers/gpu/drm/tinydrm/ili9225.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index 0d77f22..72404f3 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -4372,6 +4372,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc > S: Maintained > F: drivers/gpu/drm/tve200/ > > +DRM DRIVER FOR ILITEK ILI9225 PANELS > +M: David Lechner <david@lechnology.com> > +S: Maintained > +F: drivers/gpu/drm/tinydrm/ili9225.c > +F: Documentation/devicetree/bindings/display/ili9225.txt > + > DRM DRIVER FOR INTEL I810 VIDEO CARDS > S: Orphan / Obsolete > F: drivers/gpu/drm/i810/ > diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig > index 2e790e7..90c5bd5 100644 > --- a/drivers/gpu/drm/tinydrm/Kconfig > +++ b/drivers/gpu/drm/tinydrm/Kconfig > @@ -12,6 +12,16 @@ menuconfig DRM_TINYDRM > config TINYDRM_MIPI_DBI > tristate > > +config TINYDRM_ILI9225 > + tristate "DRM support for ILI9225 display panels" > + depends on DRM_TINYDRM && SPI > + select TINYDRM_MIPI_DBI > + help > + DRM driver for the following Ilitek ILI9225 panels: > + * No-name 2.2" color screen module > + > + If M is selected the module will be called ili9225. > + > config TINYDRM_MI0283QT > tristate "DRM support for MI0283QT" > depends on DRM_TINYDRM && SPI > diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile > index 0c184bd..8aeee53 100644 > --- a/drivers/gpu/drm/tinydrm/Makefile > +++ b/drivers/gpu/drm/tinydrm/Makefile > @@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_TINYDRM) += core/ > obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o > > # Displays > +obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o > obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o > obj-$(CONFIG_TINYDRM_REPAPER) += repaper.o > obj-$(CONFIG_TINYDRM_ST7586) += st7586.o > diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c > new file mode 100644 > index 0000000..3b766a2 > --- /dev/null > +++ b/drivers/gpu/drm/tinydrm/ili9225.c > @@ -0,0 +1,468 @@ > +/* > + * 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_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; > + > + mutex_lock(&tdev->dirty_lock); > + > + if (!mipi->enabled) > + goto out_unlock; > + > + /* fbdev can flush even when we're not interested */ > + if (tdev->pipe.plane.fb != fb) > + goto out_unlock; > + > + 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) > + goto out_unlock; > + } 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); > + > +out_unlock: > + mutex_unlock(&tdev->dirty_lock); > + > + if (ret) > + dev_err_once(fb->dev->dev, "Failed to update display %d\n", > + ret); > + > + return ret; > +} > + > +static const struct drm_framebuffer_funcs ili9225_fb_funcs = { > + .destroy = drm_gem_fb_destroy, > + .create_handle = drm_gem_fb_create_handle, > + .dirty = ili9225_fb_dirty, > +}; > + > +static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe, > + struct drm_crtc_state *crtc_state) > +{ > + struct tinydrm_device *tdev = pipe_to_tinydrm(pipe); > + struct mipi_dbi *mipi = mipi_dbi_from_tinydrm(tdev); > + struct drm_framebuffer *fb = pipe->plane.fb; > + 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->enabled = true; > + > + if (fb) > + fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0); > +} > + > +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; > + > + 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 = tinydrm_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, > + TINYDRM_GEM_DRIVER_OPS, > + .lastclose = tinydrm_lastclose, > + .name = "ili9225", > + .desc = "Ilitek ILI9225", > + .date = "20171106", > + .major = 1, > + .minor = 0, > +}; > + > +static const struct of_device_id ili9225_of_match[] = { > + { .compatible = "ilitek,ili9225-2.2in-176x220" }, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, ili9225_of_match); > + > +static const struct spi_device_id ili9225_id[] = { > + { "ili9225-2.2in-176x220", 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"); -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Den 19.11.2017 21.12, skrev David Lechner: > This is a new driver for ILI9225 based display panels. Thanks, applied to drm-misc. Noralf. > v2 changes: > * New patch for ilitek vendor prefix. > * Use "ilitek" instead of "generic" in dt-bindings > * New patch to export 2 mipi_dbi_* functions > * Clean up ILI9225 driver based on feedback > > David Lechner (4): > dt-bindings: Add vendor prefix for ilitek > dt-bindings: Add binding for Ilitek ILI9225 display panels > drm/tinydrm: export mipi_dbi_buf_copy and mipi_dbi_spi_cmd_max_speed > drm/tinydrm: add driver for ILI9225 panels > > .../devicetree/bindings/display/ilitek,ili9225.txt | 25 ++ > .../devicetree/bindings/vendor-prefixes.txt | 1 + > MAINTAINERS | 6 + > drivers/gpu/drm/tinydrm/Kconfig | 10 + > drivers/gpu/drm/tinydrm/Makefile | 1 + > drivers/gpu/drm/tinydrm/ili9225.c | 468 +++++++++++++++++++++ > drivers/gpu/drm/tinydrm/mipi-dbi.c | 24 +- > include/drm/tinydrm/mipi-dbi.h | 4 +- > 8 files changed, 534 insertions(+), 5 deletions(-) > create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9225.txt > create mode 100644 drivers/gpu/drm/tinydrm/ili9225.c > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html