diff options
Diffstat (limited to 'drivers/gpu/drm/solomon')
| -rw-r--r-- | drivers/gpu/drm/solomon/Kconfig | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/solomon/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x-i2c.c | 60 | ||||
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x-spi.c | 178 | ||||
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x.c | 154 | ||||
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x.h | 18 |
6 files changed, 366 insertions, 65 deletions
diff --git a/drivers/gpu/drm/solomon/Kconfig b/drivers/gpu/drm/solomon/Kconfig index 5861c3ab7c45..e170716d976b 100644 --- a/drivers/gpu/drm/solomon/Kconfig +++ b/drivers/gpu/drm/solomon/Kconfig @@ -1,13 +1,13 @@ config DRM_SSD130X tristate "DRM support for Solomon SSD130x OLED displays" - depends on DRM + depends on DRM && MMU select BACKLIGHT_CLASS_DEVICE select DRM_GEM_SHMEM_HELPER select DRM_KMS_HELPER help - DRM driver for the SSD1305, SSD1306, SSD1307 and SSD1309 Solomon - OLED controllers. This is only for the core driver, a driver for - the appropriate bus transport in your chip also must be selected. + DRM driver for the SSD130x 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. @@ -16,6 +16,16 @@ config DRM_SSD130X_I2C depends on DRM_SSD130X && I2C select REGMAP_I2C help - Say Y here if the SSD130x OLED display is connected via I2C bus. + Say Y here if the SSD130x 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)" + depends on DRM_SSD130X && SPI + select REGMAP + help + Say Y here if the SSD130x OLED display is connected via SPI bus. + + If M is selected the module will be called ssd130x-spi. diff --git a/drivers/gpu/drm/solomon/Makefile b/drivers/gpu/drm/solomon/Makefile index 4bfc5acb0447..b5fc792257d7 100644 --- a/drivers/gpu/drm/solomon/Makefile +++ b/drivers/gpu/drm/solomon/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_DRM_SSD130X) += ssd130x.o obj-$(CONFIG_DRM_SSD130X_I2C) += ssd130x-i2c.o +obj-$(CONFIG_DRM_SSD130X_SPI) += ssd130x-spi.o diff --git a/drivers/gpu/drm/solomon/ssd130x-i2c.c b/drivers/gpu/drm/solomon/ssd130x-i2c.c index 3126aeda4ced..1e0fcec7be47 100644 --- a/drivers/gpu/drm/solomon/ssd130x-i2c.c +++ b/drivers/gpu/drm/solomon/ssd130x-i2c.c @@ -43,7 +43,9 @@ static int ssd130x_i2c_remove(struct i2c_client *client) { struct ssd130x_device *ssd130x = i2c_get_clientdata(client); - return ssd130x_remove(ssd130x); + ssd130x_remove(ssd130x); + + return 0; } static void ssd130x_i2c_shutdown(struct i2c_client *client) @@ -53,48 +55,43 @@ static void ssd130x_i2c_shutdown(struct i2c_client *client) ssd130x_shutdown(ssd130x); } -static struct ssd130x_deviceinfo ssd130x_ssd1305_deviceinfo = { - .default_vcomh = 0x34, - .default_dclk_div = 1, - .default_dclk_frq = 7, -}; - -static struct ssd130x_deviceinfo ssd130x_ssd1306_deviceinfo = { - .default_vcomh = 0x20, - .default_dclk_div = 1, - .default_dclk_frq = 8, - .need_chargepump = 1, -}; - -static struct ssd130x_deviceinfo ssd130x_ssd1307_deviceinfo = { - .default_vcomh = 0x20, - .default_dclk_div = 2, - .default_dclk_frq = 12, - .need_pwm = 1, -}; - -static struct ssd130x_deviceinfo ssd130x_ssd1309_deviceinfo = { - .default_vcomh = 0x34, - .default_dclk_div = 1, - .default_dclk_frq = 10, -}; - static const struct of_device_id ssd130x_of_match[] = { { + .compatible = "sinowealth,sh1106", + .data = &ssd130x_variants[SH1106_ID], + }, + { + .compatible = "solomon,ssd1305", + .data = &ssd130x_variants[SSD1305_ID], + }, + { + .compatible = "solomon,ssd1306", + .data = &ssd130x_variants[SSD1306_ID], + }, + { + .compatible = "solomon,ssd1307", + .data = &ssd130x_variants[SSD1307_ID], + }, + { + .compatible = "solomon,ssd1309", + .data = &ssd130x_variants[SSD1309_ID], + }, + /* Deprecated but kept for backward compatibility */ + { .compatible = "solomon,ssd1305fb-i2c", - .data = &ssd130x_ssd1305_deviceinfo, + .data = &ssd130x_variants[SSD1305_ID], }, { .compatible = "solomon,ssd1306fb-i2c", - .data = &ssd130x_ssd1306_deviceinfo, + .data = &ssd130x_variants[SSD1306_ID], }, { .compatible = "solomon,ssd1307fb-i2c", - .data = &ssd130x_ssd1307_deviceinfo, + .data = &ssd130x_variants[SSD1307_ID], }, { .compatible = "solomon,ssd1309fb-i2c", - .data = &ssd130x_ssd1309_deviceinfo, + .data = &ssd130x_variants[SSD1309_ID], }, { /* sentinel */ } }; @@ -114,3 +111,4 @@ module_i2c_driver(ssd130x_i2c_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(DRM_SSD130X); diff --git a/drivers/gpu/drm/solomon/ssd130x-spi.c b/drivers/gpu/drm/solomon/ssd130x-spi.c new file mode 100644 index 000000000000..43722adab1f8 --- /dev/null +++ b/drivers/gpu/drm/solomon/ssd130x-spi.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * DRM driver for Solomon SSD130X OLED displays (SPI bus) + * + * Copyright 2022 Red Hat Inc. + * Authors: Javier Martinez Canillas <javierm@redhat.com> + */ +#include <linux/spi/spi.h> +#include <linux/module.h> + +#include "ssd130x.h" + +#define DRIVER_NAME "ssd130x-spi" +#define DRIVER_DESC "DRM driver for Solomon SSD130X OLED displays (SPI)" + +struct ssd130x_spi_transport { + struct spi_device *spi; + struct gpio_desc *dc; +}; + +static const struct regmap_config ssd130x_spi_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +/* + * The regmap bus .write handler, it is just a wrapper around spi_write() + * but toggling the Data/Command control pin (D/C#). Since for 4-wire SPI + * a D/C# pin is used, in contrast with I2C where a control byte is sent, + * prior to every data byte, that contains a bit with the D/C# value. + * + * These control bytes are considered registers by the ssd130x core driver + * and can be used by the ssd130x SPI driver to determine if the data sent + * is for a command register or for the Graphic Display Data RAM (GDDRAM). + */ +static int ssd130x_spi_write(void *context, const void *data, size_t count) +{ + struct ssd130x_spi_transport *t = context; + struct spi_device *spi = t->spi; + const u8 *reg = data; + + if (*reg == SSD130X_COMMAND) + gpiod_set_value_cansleep(t->dc, 0); + + if (*reg == SSD130X_DATA) + gpiod_set_value_cansleep(t->dc, 1); + + /* Remove control byte since is not used in a 4-wire SPI interface */ + return spi_write(spi, reg + 1, count - 1); +} + +/* The ssd130x driver does not read registers but regmap expects a .read */ +static int ssd130x_spi_read(void *context, const void *reg, size_t reg_size, + void *val, size_t val_size) +{ + return -EOPNOTSUPP; +} + +/* + * A custom bus is needed due the special write that toggles a D/C# pin, + * another option could be to just have a .reg_write() callback but that + * will prevent to do data writes in bulk. + * + * Once the regmap API is extended to support defining a bulk write handler + * in the struct regmap_config, this can be simplified and the bus dropped. + */ +static struct regmap_bus regmap_ssd130x_spi_bus = { + .write = ssd130x_spi_write, + .read = ssd130x_spi_read, +}; + +static int ssd130x_spi_probe(struct spi_device *spi) +{ + struct ssd130x_spi_transport *t; + struct ssd130x_device *ssd130x; + struct regmap *regmap; + struct gpio_desc *dc; + struct device *dev = &spi->dev; + + dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW); + if (IS_ERR(dc)) + return dev_err_probe(dev, PTR_ERR(dc), + "Failed to get dc gpio\n"); + + t = devm_kzalloc(dev, sizeof(*t), GFP_KERNEL); + if (!t) + return dev_err_probe(dev, -ENOMEM, + "Failed to allocate SPI transport data\n"); + + t->spi = spi; + t->dc = dc; + + regmap = devm_regmap_init(dev, ®map_ssd130x_spi_bus, t, + &ssd130x_spi_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + ssd130x = ssd130x_probe(dev, regmap); + if (IS_ERR(ssd130x)) + return PTR_ERR(ssd130x); + + spi_set_drvdata(spi, ssd130x); + + return 0; +} + +static void ssd130x_spi_remove(struct spi_device *spi) +{ + struct ssd130x_device *ssd130x = spi_get_drvdata(spi); + + ssd130x_remove(ssd130x); +} + +static void ssd130x_spi_shutdown(struct spi_device *spi) +{ + struct ssd130x_device *ssd130x = spi_get_drvdata(spi); + + ssd130x_shutdown(ssd130x); +} + +static const struct of_device_id ssd130x_of_match[] = { + { + .compatible = "sinowealth,sh1106", + .data = &ssd130x_variants[SH1106_ID], + }, + { + .compatible = "solomon,ssd1305", + .data = &ssd130x_variants[SSD1305_ID], + }, + { + .compatible = "solomon,ssd1306", + .data = &ssd130x_variants[SSD1306_ID], + }, + { + .compatible = "solomon,ssd1307", + .data = &ssd130x_variants[SSD1307_ID], + }, + { + .compatible = "solomon,ssd1309", + .data = &ssd130x_variants[SSD1309_ID], + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ssd130x_of_match); + +/* + * The SPI core always reports a MODALIAS uevent of the form "spi:<dev>", even + * if the device was registered via OF. This means that the module will not be + * auto loaded, unless it contains an alias that matches the MODALIAS reported. + * + * To workaround this issue, add a SPI device ID table. Even when this should + * not be needed for this driver to match the registered SPI devices. + */ +static const struct spi_device_id ssd130x_spi_table[] = { + { "sh1106", SH1106_ID }, + { "ssd1305", SSD1305_ID }, + { "ssd1306", SSD1306_ID }, + { "ssd1307", SSD1307_ID }, + { "ssd1309", SSD1309_ID }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(spi, ssd130x_spi_table); + +static struct spi_driver ssd130x_spi_driver = { + .driver = { + .name = DRIVER_NAME, + .of_match_table = ssd130x_of_match, + }, + .probe = ssd130x_spi_probe, + .remove = ssd130x_spi_remove, + .shutdown = ssd130x_spi_shutdown, +}; +module_spi_driver(ssd130x_spi_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(DRM_SSD130X); diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c index ce4dc20412e0..08394444dd6e 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -39,16 +39,15 @@ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0 -#define SSD130X_DATA 0x40 -#define SSD130X_COMMAND 0x80 - +#define SSD130X_PAGE_COL_START_LOW 0x00 +#define SSD130X_PAGE_COL_START_HIGH 0x10 #define SSD130X_SET_ADDRESS_MODE 0x20 #define SSD130X_SET_COL_RANGE 0x21 #define SSD130X_SET_PAGE_RANGE 0x22 #define SSD130X_CONTRAST 0x81 #define SSD130X_SET_LOOKUP_TABLE 0x91 #define SSD130X_CHARGE_PUMP 0x8d -#define SSD130X_SEG_REMAP_ON 0xa1 +#define SSD130X_SET_SEG_REMAP 0xa0 #define SSD130X_DISPLAY_OFF 0xae #define SSD130X_SET_MULTIPLEX_RATIO 0xa8 #define SSD130X_DISPLAY_ON 0xaf @@ -61,7 +60,14 @@ #define SSD130X_SET_COM_PINS_CONFIG 0xda #define SSD130X_SET_VCOMH 0xdb -#define SSD130X_SET_COM_SCAN_DIR_MASK GENMASK(3, 2) +#define SSD130X_PAGE_COL_START_MASK GENMASK(3, 0) +#define SSD130X_PAGE_COL_START_HIGH_SET(val) FIELD_PREP(SSD130X_PAGE_COL_START_MASK, (val) >> 4) +#define SSD130X_PAGE_COL_START_LOW_SET(val) FIELD_PREP(SSD130X_PAGE_COL_START_MASK, (val)) +#define SSD130X_START_PAGE_ADDRESS_MASK GENMASK(2, 0) +#define SSD130X_START_PAGE_ADDRESS_SET(val) FIELD_PREP(SSD130X_START_PAGE_ADDRESS_MASK, (val)) +#define SSD130X_SET_SEG_REMAP_MASK GENMASK(0, 0) +#define SSD130X_SET_SEG_REMAP_SET(val) FIELD_PREP(SSD130X_SET_SEG_REMAP_MASK, (val)) +#define SSD130X_SET_COM_SCAN_DIR_MASK GENMASK(3, 3) #define SSD130X_SET_COM_SCAN_DIR_SET(val) FIELD_PREP(SSD130X_SET_COM_SCAN_DIR_MASK, (val)) #define SSD130X_SET_CLOCK_DIV_MASK GENMASK(3, 0) #define SSD130X_SET_CLOCK_DIV_SET(val) FIELD_PREP(SSD130X_SET_CLOCK_DIV_MASK, (val)) @@ -85,6 +91,38 @@ #define MAX_CONTRAST 255 +const struct ssd130x_deviceinfo ssd130x_variants[] = { + [SH1106_ID] = { + .default_vcomh = 0x40, + .default_dclk_div = 1, + .default_dclk_frq = 5, + .page_mode_only = 1, + }, + [SSD1305_ID] = { + .default_vcomh = 0x34, + .default_dclk_div = 1, + .default_dclk_frq = 7, + }, + [SSD1306_ID] = { + .default_vcomh = 0x20, + .default_dclk_div = 1, + .default_dclk_frq = 8, + .need_chargepump = 1, + }, + [SSD1307_ID] = { + .default_vcomh = 0x20, + .default_dclk_div = 2, + .default_dclk_frq = 12, + .need_pwm = 1, + }, + [SSD1309_ID] = { + .default_vcomh = 0x34, + .default_dclk_div = 1, + .default_dclk_frq = 10, + } +}; +EXPORT_SYMBOL_NS_GPL(ssd130x_variants, DRM_SSD130X); + static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm) { return container_of(drm, struct ssd130x_device, drm); @@ -128,6 +166,7 @@ out_end: return ret; } +/* Set address range for horizontal/vertical addressing modes */ static int ssd130x_set_col_range(struct ssd130x_device *ssd130x, u8 col_start, u8 cols) { @@ -164,6 +203,26 @@ static int ssd130x_set_page_range(struct ssd130x_device *ssd130x, return 0; } +/* Set page and column start address for page addressing mode */ +static int ssd130x_set_page_pos(struct ssd130x_device *ssd130x, + u8 page_start, u8 col_start) +{ + int ret; + u32 page, col_low, col_high; + + page = SSD130X_START_PAGE_ADDRESS | + SSD130X_START_PAGE_ADDRESS_SET(page_start); + col_low = SSD130X_PAGE_COL_START_LOW | + SSD130X_PAGE_COL_START_LOW_SET(col_start); + col_high = SSD130X_PAGE_COL_START_HIGH | + SSD130X_PAGE_COL_START_HIGH_SET(col_start); + ret = ssd130x_write_cmd(ssd130x, 3, page, col_low, col_high); + if (ret < 0) + return ret; + + return 0; +} + static int ssd130x_pwm_enable(struct ssd130x_device *ssd130x) { struct device *dev = ssd130x->dev; @@ -235,7 +294,7 @@ static void ssd130x_power_off(struct ssd130x_device *ssd130x) static int ssd130x_init(struct ssd130x_device *ssd130x) { - u32 precharge, dclk, com_invdir, compins, chargepump; + u32 precharge, dclk, com_invdir, compins, chargepump, seg_remap; int ret; /* Set initial contrast */ @@ -244,11 +303,11 @@ static int ssd130x_init(struct ssd130x_device *ssd130x) return ret; /* Set segment re-map */ - if (ssd130x->seg_remap) { - ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_SEG_REMAP_ON); - if (ret < 0) - return ret; - } + seg_remap = (SSD130X_SET_SEG_REMAP | + SSD130X_SET_SEG_REMAP_SET(ssd130x->seg_remap)); + ret = ssd130x_write_cmd(ssd130x, 1, seg_remap); + if (ret < 0) + return ret; /* Set COM direction */ com_invdir = (SSD130X_SET_COM_SCAN_DIR | @@ -340,6 +399,11 @@ static int ssd130x_init(struct ssd130x_device *ssd130x) } } + /* Switch to page addressing mode */ + if (ssd130x->page_address_mode) + return ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_ADDRESS_MODE, + SSD130X_SET_ADDRESS_MODE_PAGE); + /* Switch to horizontal addressing mode */ return ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_ADDRESS_MODE, SSD130X_SET_ADDRESS_MODE_HORIZONTAL); @@ -353,11 +417,14 @@ static int ssd130x_update_rect(struct ssd130x_device *ssd130x, u8 *buf, unsigned int width = drm_rect_width(rect); unsigned int height = drm_rect_height(rect); unsigned int line_length = DIV_ROUND_UP(width, 8); - unsigned int pages = DIV_ROUND_UP(y % 8 + height, 8); + unsigned int pages = DIV_ROUND_UP(height, 8); + struct drm_device *drm = &ssd130x->drm; u32 array_idx = 0; int ret, i, j, k; u8 *data_array = NULL; + drm_WARN_ONCE(drm, y % 8 != 0, "y must be aligned to screen page\n"); + data_array = kcalloc(width, pages, GFP_KERNEL); if (!data_array) return -ENOMEM; @@ -391,21 +458,24 @@ static int ssd130x_update_rect(struct ssd130x_device *ssd130x, u8 *buf, * (5) A4 B4 C4 D4 E4 F4 G4 H4 */ - ret = ssd130x_set_col_range(ssd130x, ssd130x->col_offset + x, width); - if (ret < 0) - goto out_free; + if (!ssd130x->page_address_mode) { + /* Set address range for horizontal addressing mode */ + ret = ssd130x_set_col_range(ssd130x, ssd130x->col_offset + x, width); + if (ret < 0) + goto out_free; - ret = ssd130x_set_page_range(ssd130x, ssd130x->page_offset + y / 8, pages); - if (ret < 0) - goto out_free; + ret = ssd130x_set_page_range(ssd130x, ssd130x->page_offset + y / 8, pages); + if (ret < 0) + goto out_free; + } - for (i = y / 8; i < y / 8 + pages; i++) { + for (i = 0; i < pages; i++) { int m = 8; /* Last page may be partial */ - if (8 * (i + 1) > ssd130x->height) + if (8 * (y / 8 + i + 1) > ssd130x->height) m = ssd130x->height % 8; - for (j = x; j < x + width; j++) { + for (j = 0; j < width; j++) { u8 data = 0; for (k = 0; k < m; k++) { @@ -416,9 +486,29 @@ static int ssd130x_update_rect(struct ssd130x_device *ssd130x, u8 *buf, } data_array[array_idx++] = data; } + + /* + * In page addressing mode, the start address needs to be reset, + * and each page then needs to be written out separately. + */ + if (ssd130x->page_address_mode) { + ret = ssd130x_set_page_pos(ssd130x, + ssd130x->page_offset + i, + ssd130x->col_offset + x); + if (ret < 0) + goto out_free; + + ret = ssd130x_write_data(ssd130x, data_array, width); + if (ret < 0) + goto out_free; + + array_idx = 0; + } } - ret = ssd130x_write_data(ssd130x, data_array, width * pages); + /* Write out update in one go if we aren't using page addressing mode */ + if (!ssd130x->page_address_mode) + ret = ssd130x_write_data(ssd130x, data_array, width * pages); out_free: kfree(data_array); @@ -435,7 +525,8 @@ static void ssd130x_clear_screen(struct ssd130x_device *ssd130x) .y2 = ssd130x->height, }; - buf = kcalloc(ssd130x->width, ssd130x->height, GFP_KERNEL); + buf = kcalloc(DIV_ROUND_UP(ssd130x->width, 8), ssd130x->height, + GFP_KERNEL); if (!buf) return; @@ -449,14 +540,20 @@ static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb, const struct iosys_m { struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev); void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */ + unsigned int dst_pitch; int ret = 0; u8 *buf = NULL; - buf = kcalloc(fb->width, fb->height, GFP_KERNEL); + /* Align y to display page boundaries */ + rect->y1 = round_down(rect->y1, 8); + rect->y2 = min_t(unsigned int, round_up(rect->y2, 8), ssd130x->height); + + dst_pitch = DIV_ROUND_UP(drm_rect_width(rect), 8); + buf = kcalloc(dst_pitch, drm_rect_height(rect), GFP_KERNEL); if (!buf) return -ENOMEM; - drm_fb_xrgb8888_to_mono_reversed(buf, 0, vmap, fb, rect); + drm_fb_xrgb8888_to_mono(buf, dst_pitch, vmap, fb, rect); ssd130x_update_rect(ssd130x, buf, rect); @@ -794,6 +891,9 @@ struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap) ssd130x->regmap = regmap; ssd130x->device_info = device_get_match_data(dev); + if (ssd130x->device_info->page_mode_only) + ssd130x->page_address_mode = 1; + ssd130x_parse_properties(ssd130x); ret = ssd130x_get_resources(ssd130x); @@ -824,11 +924,9 @@ struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap) } EXPORT_SYMBOL_GPL(ssd130x_probe); -int ssd130x_remove(struct ssd130x_device *ssd130x) +void ssd130x_remove(struct ssd130x_device *ssd130x) { drm_dev_unplug(&ssd130x->drm); - - return 0; } EXPORT_SYMBOL_GPL(ssd130x_remove); diff --git a/drivers/gpu/drm/solomon/ssd130x.h b/drivers/gpu/drm/solomon/ssd130x.h index cd21cdccb566..4c4a84e962e7 100644 --- a/drivers/gpu/drm/solomon/ssd130x.h +++ b/drivers/gpu/drm/solomon/ssd130x.h @@ -18,12 +18,25 @@ #include <linux/regmap.h> +#define SSD130X_DATA 0x40 +#define SSD130X_COMMAND 0x80 + +enum ssd130x_variants { + SH1106_ID, + SSD1305_ID, + SSD1306_ID, + SSD1307_ID, + SSD1309_ID, + NR_SSD130X_VARIANTS +}; + struct ssd130x_deviceinfo { u32 default_vcomh; u32 default_dclk_div; u32 default_dclk_frq; int need_pwm; int need_chargepump; + bool page_mode_only; }; struct ssd130x_device { @@ -38,6 +51,7 @@ struct ssd130x_device { const struct ssd130x_deviceinfo *device_info; + unsigned page_address_mode : 1; unsigned area_color_enable : 1; unsigned com_invdir : 1; unsigned com_lrremap : 1; @@ -69,8 +83,10 @@ struct ssd130x_device { u8 page_end; }; +extern const struct ssd130x_deviceinfo ssd130x_variants[]; + struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap); -int ssd130x_remove(struct ssd130x_device *ssd130x); +void ssd130x_remove(struct ssd130x_device *ssd130x); void ssd130x_shutdown(struct ssd130x_device *ssd130x); #endif /* __SSD1307X_H__ */ |