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drm/ssd130x: Add support for the SSD132x OLED controller family

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The Solomon SSD132x controllers (such as the SSD1322, SSD1325 and SSD1327)
are used by 16 grayscale dot matrix OLED panels, extend the driver to also
support this chip family.

Instead adding an indirection level to allow the same modesetting pipeline
to be used by both controller families, add another pipeline for SSD132x.

This leads to some code duplication but it makes the driver easier to read
and reason about. Once other controller families are added (e.g: SSD133x),
some common code can be factored out in driver helpers to be shared by the
different families. But that can be done later once these patterns emerge.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231014071520.1342189-5-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas
2023-10-14 09:15:06 +02:00
parent 9081d21a5a
commit fdd591e00a
5 changed files with 449 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/solomon/Kconfig
View File

@ -1,31 +1,31 @@
config DRM_SSD130X
tristate "DRM support for Solomon SSD130x OLED displays"
tristate "DRM support for Solomon SSD13xx OLED displays"
depends on DRM && MMU
select BACKLIGHT_CLASS_DEVICE
select DRM_GEM_SHMEM_HELPER
select DRM_KMS_HELPER
help
DRM driver for the SSD130x Solomon and SINO WEALTH SH110x OLED
DRM driver for the SSD13xx Solomon and SINO WEALTH SH110x OLED
controllers. This is only for the core driver, a driver for the
appropriate bus transport in your chip also must be selected.
If M is selected the module will be called ssd130x.
config DRM_SSD130X_I2C
tristate "DRM support for Solomon SSD130x OLED displays (I2C bus)"
tristate "DRM support for Solomon SSD13xx OLED displays (I2C bus)"
depends on DRM_SSD130X && I2C
select REGMAP_I2C
help
Say Y here if the SSD130x or SH110x OLED display is connected via
Say Y here if the SSD13xx or SH110x OLED display is connected via
I2C bus.
If M is selected the module will be called ssd130x-i2c.
config DRM_SSD130X_SPI
tristate "DRM support for Solomon SSD130X OLED displays (SPI bus)"
tristate "DRM support for Solomon SSD13xx OLED displays (SPI bus)"
depends on DRM_SSD130X && SPI
select REGMAP
help
Say Y here if the SSD130x OLED display is connected via SPI bus.
Say Y here if the SSD13xx OLED display is connected via SPI bus.
If M is selected the module will be called ssd130x-spi.

17
drivers/gpu/drm/solomon/ssd130x-i2c.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* DRM driver for Solomon SSD130x OLED displays (I2C bus)
* DRM driver for Solomon SSD13xx OLED displays (I2C bus)
*
* Copyright 2022 Red Hat Inc.
* Author: Javier Martinez Canillas <javierm@redhat.com>
@ -14,7 +14,7 @@
#include "ssd130x.h"
#define DRIVER_NAME "ssd130x-i2c"
#define DRIVER_DESC "DRM driver for Solomon SSD130x OLED displays (I2C)"
#define DRIVER_DESC "DRM driver for Solomon SSD13xx OLED displays (I2C)"
static const struct regmap_config ssd130x_i2c_regmap_config = {
.reg_bits = 8,
@ -92,6 +92,19 @@ static const struct of_device_id ssd130x_of_match[] = {
.compatible = "solomon,ssd1309fb-i2c",
.data = &ssd130x_variants[SSD1309_ID],
},
/* ssd132x family */
{
.compatible = "solomon,ssd1322",
.data = &ssd130x_variants[SSD1322_ID],
},
{
.compatible = "solomon,ssd1325",
.data = &ssd130x_variants[SSD1325_ID],
},
{
.compatible = "solomon,ssd1327",
.data = &ssd130x_variants[SSD1327_ID],
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ssd130x_of_match);

21
drivers/gpu/drm/solomon/ssd130x-spi.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* DRM driver for Solomon SSD130X OLED displays (SPI bus)
* DRM driver for Solomon SSD13xx OLED displays (SPI bus)
*
* Copyright 2022 Red Hat Inc.
* Authors: Javier Martinez Canillas <javierm@redhat.com>
@ -11,7 +11,7 @@
#include "ssd130x.h"
#define DRIVER_NAME "ssd130x-spi"
#define DRIVER_DESC "DRM driver for Solomon SSD130X OLED displays (SPI)"
#define DRIVER_DESC "DRM driver for Solomon SSD13xx OLED displays (SPI)"
struct ssd130x_spi_transport {
struct spi_device *spi;
@ -129,6 +129,19 @@ static const struct of_device_id ssd130x_of_match[] = {
.compatible = "solomon,ssd1309",
.data = &ssd130x_variants[SSD1309_ID],
},
/* ssd132x family */
{
.compatible = "solomon,ssd1322",
.data = &ssd130x_variants[SSD1322_ID],
},
{
.compatible = "solomon,ssd1325",
.data = &ssd130x_variants[SSD1325_ID],
},
{
.compatible = "solomon,ssd1327",
.data = &ssd130x_variants[SSD1327_ID],
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ssd130x_of_match);
@ -149,6 +162,10 @@ static const struct spi_device_id ssd130x_spi_table[] = {
{ "ssd1306", SSD1306_ID },
{ "ssd1307", SSD1307_ID },
{ "ssd1309", SSD1309_ID },
/* ssd132x family */
{ "ssd1322", SSD1322_ID },
{ "ssd1325", SSD1325_ID },
{ "ssd1327", SSD1327_ID },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(spi, ssd130x_spi_table);

403
drivers/gpu/drm/solomon/ssd130x.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* DRM driver for Solomon SSD130x OLED displays
* DRM driver for Solomon SSD13xx OLED displays
*
* Copyright 2022 Red Hat Inc.
* Author: Javier Martinez Canillas <javierm@redhat.com>
@ -37,13 +37,15 @@
#include "ssd130x.h"
#define DRIVER_NAME "ssd130x"
#define DRIVER_DESC "DRM driver for Solomon SSD130x OLED displays"
#define DRIVER_DESC "DRM driver for Solomon SSD13xx OLED displays"
#define DRIVER_DATE "20220131"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
#define SSD130X_PAGE_HEIGHT 8
#define SSD132X_SEGMENT_WIDTH 2
/* ssd13xx commands */
#define SSD13XX_CONTRAST 0x81
#define SSD13XX_SET_SEG_REMAP 0xa0
@ -99,6 +101,24 @@
#define SSD130X_SET_AREA_COLOR_MODE_ENABLE 0x1e
#define SSD130X_SET_AREA_COLOR_MODE_LOW_POWER 0x05
/* ssd132x commands */
#define SSD132X_SET_COL_RANGE 0x15
#define SSD132X_SET_DEACTIVATE_SCROLL 0x2e
#define SSD132X_SET_ROW_RANGE 0x75
#define SSD132X_SET_DISPLAY_START 0xa1
#define SSD132X_SET_DISPLAY_OFFSET 0xa2
#define SSD132X_SET_DISPLAY_NORMAL 0xa4
#define SSD132X_SET_FUNCTION_SELECT_A 0xab
#define SSD132X_SET_PHASE_LENGTH 0xb1
#define SSD132X_SET_CLOCK_FREQ 0xb3
#define SSD132X_SET_GPIO 0xb5
#define SSD132X_SET_PRECHARGE_PERIOD 0xb6
#define SSD132X_SET_GRAY_SCALE_TABLE 0xb8
#define SSD132X_SELECT_DEFAULT_TABLE 0xb9
#define SSD132X_SET_PRECHARGE_VOLTAGE 0xbc
#define SSD130X_SET_VCOMH_VOLTAGE 0xbe
#define SSD132X_SET_FUNCTION_SELECT_B 0xd5
#define MAX_CONTRAST 255
const struct ssd130x_deviceinfo ssd130x_variants[] = {
@ -144,6 +164,22 @@ const struct ssd130x_deviceinfo ssd130x_variants[] = {
.default_width = 128,
.default_height = 64,
.family_id = SSD130X_FAMILY,
},
/* ssd132x family */
[SSD1322_ID] = {
.default_width = 480,
.default_height = 128,
.family_id = SSD132X_FAMILY,
},
[SSD1325_ID] = {
.default_width = 128,
.default_height = 80,
.family_id = SSD132X_FAMILY,
},
[SSD1327_ID] = {
.default_width = 128,
.default_height = 128,
.family_id = SSD132X_FAMILY,
}
};
EXPORT_SYMBOL_NS_GPL(ssd130x_variants, DRM_SSD130X);
@ -463,6 +499,96 @@ static int ssd130x_init(struct ssd130x_device *ssd130x)
SSD130X_SET_ADDRESS_MODE_HORIZONTAL);
}
static int ssd132x_init(struct ssd130x_device *ssd130x)
{
int ret;
/* Set initial contrast */
ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_CONTRAST, 0x80);
if (ret < 0)
return ret;
/* Set column start and end */
ret = ssd130x_write_cmd(ssd130x, 3, SSD132X_SET_COL_RANGE, 0x00,
ssd130x->width / SSD132X_SEGMENT_WIDTH - 1);
if (ret < 0)
return ret;
/* Set row start and end */
ret = ssd130x_write_cmd(ssd130x, 3, SSD132X_SET_ROW_RANGE, 0x00, ssd130x->height - 1);
if (ret < 0)
return ret;
/*
* Horizontal Address Increment
* Re-map for Column Address, Nibble and COM
* COM Split Odd Even
*/
ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_SEG_REMAP, 0x53);
if (ret < 0)
return ret;
/* Set display start and offset */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_DISPLAY_START, 0x00);
if (ret < 0)
return ret;
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_DISPLAY_OFFSET, 0x00);
if (ret < 0)
return ret;
/* Set display mode normal */
ret = ssd130x_write_cmd(ssd130x, 1, SSD132X_SET_DISPLAY_NORMAL);
if (ret < 0)
return ret;
/* Set multiplex ratio value */
ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
if (ret < 0)
return ret;
/* Set phase length */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PHASE_LENGTH, 0x55);
if (ret < 0)
return ret;
/* Select default linear gray scale table */
ret = ssd130x_write_cmd(ssd130x, 1, SSD132X_SELECT_DEFAULT_TABLE);
if (ret < 0)
return ret;
/* Set clock frequency */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_CLOCK_FREQ, 0x01);
if (ret < 0)
return ret;
/* Enable internal VDD regulator */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_FUNCTION_SELECT_A, 0x1);
if (ret < 0)
return ret;
/* Set pre-charge period */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PRECHARGE_PERIOD, 0x01);
if (ret < 0)
return ret;
/* Set pre-charge voltage */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_PRECHARGE_VOLTAGE, 0x08);
if (ret < 0)
return ret;
/* Set VCOMH voltage */
ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_VCOMH_VOLTAGE, 0x07);
if (ret < 0)
return ret;
/* Enable second pre-charge and internal VSL */
ret = ssd130x_write_cmd(ssd130x, 2, SSD132X_SET_FUNCTION_SELECT_B, 0x62);
if (ret < 0)
return ret;
return 0;
}
static int ssd130x_update_rect(struct ssd130x_device *ssd130x,
struct drm_rect *rect, u8 *buf,
u8 *data_array)
@ -569,6 +695,64 @@ static int ssd130x_update_rect(struct ssd130x_device *ssd130x,
return ret;
}
static int ssd132x_update_rect(struct ssd130x_device *ssd130x,
struct drm_rect *rect, u8 *buf,
u8 *data_array)
{
unsigned int x = rect->x1;
unsigned int y = rect->y1;
unsigned int segment_width = SSD132X_SEGMENT_WIDTH;
unsigned int width = drm_rect_width(rect);
unsigned int height = drm_rect_height(rect);
unsigned int columns = DIV_ROUND_UP(width, segment_width);
unsigned int rows = height;
struct drm_device *drm = &ssd130x->drm;
u32 array_idx = 0;
unsigned int i, j;
int ret;
drm_WARN_ONCE(drm, x % segment_width != 0, "x must be aligned to screen segment\n");
/*
* The screen is divided in Segment and Common outputs, where
* COM0 to COM[N - 1] are the rows and SEG0 to SEG[M - 1] are
* the columns.
*
* Each Segment has a 4-bit pixel and each Common output has a
* row of pixels. When using the (default) horizontal address
* increment mode, each byte of data sent to the controller has
* two Segments (e.g: SEG0 and SEG1) that are stored in the lower
* and higher nibbles of a single byte representing one column.
* That is, the first byte are SEG0 (D0[3:0]) and SEG1 (D0[7:4]),
* the second byte are SEG2 (D1[3:0]) and SEG3 (D1[7:4]) and so on.
*/
/* Set column start and end */
ret = ssd130x_write_cmd(ssd130x, 3, SSD132X_SET_COL_RANGE, x / segment_width, columns - 1);
if (ret < 0)
return ret;
/* Set row start and end */
ret = ssd130x_write_cmd(ssd130x, 3, SSD132X_SET_ROW_RANGE, y, rows - 1);
if (ret < 0)
return ret;
for (i = 0; i < height; i++) {
/* Process pair of pixels and combine them into a single byte */
for (j = 0; j < width; j += segment_width) {
u8 n1 = buf[i * width + j];
u8 n2 = buf[i * width + j + 1];
data_array[array_idx++] = (n2 << 4) | n1;
}
}
/* Write out update in one go since horizontal addressing mode is used */
ret = ssd130x_write_data(ssd130x, data_array, columns * rows);
return ret;
}
static void ssd130x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array)
{
unsigned int pages = DIV_ROUND_UP(ssd130x->height, SSD130X_PAGE_HEIGHT);
@ -610,6 +794,17 @@ static void ssd130x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array)
}
}
static void ssd132x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array)
{
unsigned int columns = DIV_ROUND_UP(ssd130x->height, SSD132X_SEGMENT_WIDTH);
unsigned int height = ssd130x->height;
memset(data_array, 0, columns * height);
/* Write out update in one go since horizontal addressing mode is used */
ssd130x_write_data(ssd130x, data_array, columns * height);
}
static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb,
const struct iosys_map *vmap,
struct drm_rect *rect,
@ -640,6 +835,35 @@ static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb,
return ret;
}
static int ssd132x_fb_blit_rect(struct drm_framebuffer *fb,
const struct iosys_map *vmap,
struct drm_rect *rect, u8 *buf,
u8 *data_array)
{
struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev);
unsigned int dst_pitch = drm_rect_width(rect);
struct iosys_map dst;
int ret = 0;
/* Align x to display segment boundaries */
rect->x1 = round_down(rect->x1, SSD132X_SEGMENT_WIDTH);
rect->x2 = min_t(unsigned int, round_up(rect->x2, SSD132X_SEGMENT_WIDTH),
ssd130x->width);
ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE);
if (ret)
return ret;
iosys_map_set_vaddr(&dst, buf);
drm_fb_xrgb8888_to_gray8(&dst, &dst_pitch, vmap, fb, rect);
drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
ssd132x_update_rect(ssd130x, rect, buf, data_array);
return ret;
}
static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
@ -678,6 +902,44 @@ static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane,
return 0;
}
static int ssd132x_primary_plane_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_device *drm = plane->dev;
struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
struct ssd130x_plane_state *ssd130x_state = to_ssd130x_plane_state(plane_state);
struct drm_crtc *crtc = plane_state->crtc;
struct drm_crtc_state *crtc_state;
const struct drm_format_info *fi;
unsigned int pitch;
int ret;
if (crtc)
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
ret = drm_atomic_helper_check_plane_state(plane_state, crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
false, false);
if (ret)
return ret;
else if (!plane_state->visible)
return 0;
fi = drm_format_info(DRM_FORMAT_R8);
if (!fi)
return -EINVAL;
pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width);
ssd130x_state->buffer = kcalloc(pitch, ssd130x->height, GFP_KERNEL);
if (!ssd130x_state->buffer)
return -ENOMEM;
return 0;
}
static void ssd130x_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
@ -712,6 +974,40 @@ static void ssd130x_primary_plane_atomic_update(struct drm_plane *plane,
drm_dev_exit(idx);
}
static void ssd132x_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc);
struct ssd130x_crtc_state *ssd130x_crtc_state = to_ssd130x_crtc_state(crtc_state);
struct ssd130x_plane_state *ssd130x_plane_state = to_ssd130x_plane_state(plane_state);
struct drm_framebuffer *fb = plane_state->fb;
struct drm_atomic_helper_damage_iter iter;
struct drm_device *drm = plane->dev;
struct drm_rect dst_clip;
struct drm_rect damage;
int idx;
if (!drm_dev_enter(drm, &idx))
return;
drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
drm_atomic_for_each_plane_damage(&iter, &damage) {
dst_clip = plane_state->dst;
if (!drm_rect_intersect(&dst_clip, &damage))
continue;
ssd132x_fb_blit_rect(fb, &shadow_plane_state->data[0], &dst_clip,
ssd130x_plane_state->buffer,
ssd130x_crtc_state->data_array);
}
drm_dev_exit(idx);
}
static void ssd130x_primary_plane_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
@ -736,6 +1032,30 @@ static void ssd130x_primary_plane_atomic_disable(struct drm_plane *plane,
drm_dev_exit(idx);
}
static void ssd132x_primary_plane_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_device *drm = plane->dev;
struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
struct drm_crtc_state *crtc_state;
struct ssd130x_crtc_state *ssd130x_crtc_state;
int idx;
if (!plane_state->crtc)
return;
crtc_state = drm_atomic_get_new_crtc_state(state, plane_state->crtc);
ssd130x_crtc_state = to_ssd130x_crtc_state(crtc_state);
if (!drm_dev_enter(drm, &idx))
return;
ssd132x_clear_screen(ssd130x, ssd130x_crtc_state->data_array);
drm_dev_exit(idx);
}
/* Called during init to allocate the plane's atomic state. */
static void ssd130x_primary_plane_reset(struct drm_plane *plane)
{
@ -786,11 +1106,19 @@ static void ssd130x_primary_plane_destroy_state(struct drm_plane *plane,
kfree(ssd130x_state);
}
static const struct drm_plane_helper_funcs ssd130x_primary_plane_helper_funcs = {
static const struct drm_plane_helper_funcs ssd130x_primary_plane_helper_funcs[] = {
[SSD130X_FAMILY] = {
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
.atomic_check = ssd130x_primary_plane_atomic_check,
.atomic_update = ssd130x_primary_plane_atomic_update,
.atomic_disable = ssd130x_primary_plane_atomic_disable,
},
[SSD132X_FAMILY] = {
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
.atomic_check = ssd132x_primary_plane_atomic_check,
.atomic_update = ssd132x_primary_plane_atomic_update,
.atomic_disable = ssd132x_primary_plane_atomic_disable,
}
};
static const struct drm_plane_funcs ssd130x_primary_plane_funcs = {
@ -839,6 +1167,27 @@ static int ssd130x_crtc_atomic_check(struct drm_crtc *crtc,
return 0;
}
static int ssd132x_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_device *drm = crtc->dev;
struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
struct ssd130x_crtc_state *ssd130x_state = to_ssd130x_crtc_state(crtc_state);
unsigned int columns = DIV_ROUND_UP(ssd130x->width, SSD132X_SEGMENT_WIDTH);
int ret;
ret = drm_crtc_helper_atomic_check(crtc, state);
if (ret)
return ret;
ssd130x_state->data_array = kmalloc(columns * ssd130x->height, GFP_KERNEL);
if (!ssd130x_state->data_array)
return -ENOMEM;
return 0;
}
/* Called during init to allocate the CRTC's atomic state. */
static void ssd130x_crtc_reset(struct drm_crtc *crtc)
{
@ -891,9 +1240,15 @@ static void ssd130x_crtc_destroy_state(struct drm_crtc *crtc,
* the primary plane's atomic_update function. Disabling clears
* the screen in the primary plane's atomic_disable function.
*/
static const struct drm_crtc_helper_funcs ssd130x_crtc_helper_funcs = {
static const struct drm_crtc_helper_funcs ssd130x_crtc_helper_funcs[] = {
[SSD130X_FAMILY] = {
.mode_valid = ssd130x_crtc_mode_valid,
.atomic_check = ssd130x_crtc_atomic_check,
},
[SSD132X_FAMILY] = {
.mode_valid = ssd130x_crtc_mode_valid,
.atomic_check = ssd132x_crtc_atomic_check,
},
};
static const struct drm_crtc_funcs ssd130x_crtc_funcs = {
@ -931,6 +1286,31 @@ power_off:
return;
}
static void ssd132x_encoder_atomic_enable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct drm_device *drm = encoder->dev;
struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
int ret;
ret = ssd130x_power_on(ssd130x);
if (ret)
return;
ret = ssd132x_init(ssd130x);
if (ret)
goto power_off;
ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_ON);
backlight_enable(ssd130x->bl_dev);
return;
power_off:
ssd130x_power_off(ssd130x);
}
static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
@ -944,9 +1324,15 @@ static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder,
ssd130x_power_off(ssd130x);
}
static const struct drm_encoder_helper_funcs ssd130x_encoder_helper_funcs = {
static const struct drm_encoder_helper_funcs ssd130x_encoder_helper_funcs[] = {
[SSD130X_FAMILY] = {
.atomic_enable = ssd130x_encoder_atomic_enable,
.atomic_disable = ssd130x_encoder_atomic_disable,
},
[SSD132X_FAMILY] = {
.atomic_enable = ssd132x_encoder_atomic_enable,
.atomic_disable = ssd130x_encoder_atomic_disable,
}
};
static const struct drm_encoder_funcs ssd130x_encoder_funcs = {
@ -1080,6 +1466,7 @@ static void ssd130x_parse_properties(struct ssd130x_device *ssd130x)
static int ssd130x_init_modeset(struct ssd130x_device *ssd130x)
{
enum ssd130x_family_ids family_id = ssd130x->device_info->family_id;
struct drm_display_mode *mode = &ssd130x->mode;
struct device *dev = ssd130x->dev;
struct drm_device *drm = &ssd130x->drm;
@ -1130,7 +1517,7 @@ static int ssd130x_init_modeset(struct ssd130x_device *ssd130x)
return ret;
}
drm_plane_helper_add(primary_plane, &ssd130x_primary_plane_helper_funcs);
drm_plane_helper_add(primary_plane, &ssd130x_primary_plane_helper_funcs[family_id]);
drm_plane_enable_fb_damage_clips(primary_plane);
@ -1144,7 +1531,7 @@ static int ssd130x_init_modeset(struct ssd130x_device *ssd130x)
return ret;
}
drm_crtc_helper_add(crtc, &ssd130x_crtc_helper_funcs);
drm_crtc_helper_add(crtc, &ssd130x_crtc_helper_funcs[family_id]);
/* Encoder */
@ -1156,7 +1543,7 @@ static int ssd130x_init_modeset(struct ssd130x_device *ssd130x)
return ret;
}
drm_encoder_helper_add(encoder, &ssd130x_encoder_helper_funcs);
drm_encoder_helper_add(encoder, &ssd130x_encoder_helper_funcs[family_id]);
encoder->possible_crtcs = drm_crtc_mask(crtc);

7
drivers/gpu/drm/solomon/ssd130x.h
View File

@ -25,7 +25,8 @@
#define SSD13XX_COMMAND 0x80
enum ssd130x_family_ids {
SSD130X_FAMILY
SSD130X_FAMILY,
SSD132X_FAMILY
};
enum ssd130x_variants {
@ -35,6 +36,10 @@ enum ssd130x_variants {
SSD1306_ID,
SSD1307_ID,
SSD1309_ID,
/* ssd132x family */
SSD1322_ID,
SSD1325_ID,
SSD1327_ID,
NR_SSD130X_VARIANTS
};