drm/ssd130x: Rename commands that are shared across chip families
There are some commands that are shared between the SSD130x and SSD132x controller families, define these as a common SSD13XX set of commands. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20231014071520.1342189-4-javierm@redhat.com
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@ -34,10 +34,10 @@ static int ssd130x_spi_write(void *context, const void *data, size_t count)
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struct spi_device *spi = t->spi;
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const u8 *reg = data;
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if (*reg == SSD130X_COMMAND)
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if (*reg == SSD13XX_COMMAND)
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gpiod_set_value_cansleep(t->dc, 0);
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if (*reg == SSD130X_DATA)
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if (*reg == SSD13XX_DATA)
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gpiod_set_value_cansleep(t->dc, 1);
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/* Remove control byte since is not used in a 4-wire SPI interface */
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@ -44,18 +44,24 @@
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#define SSD130X_PAGE_HEIGHT 8
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/* ssd13xx commands */
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#define SSD13XX_CONTRAST 0x81
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#define SSD13XX_SET_SEG_REMAP 0xa0
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#define SSD13XX_SET_MULTIPLEX_RATIO 0xa8
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#define SSD13XX_DISPLAY_OFF 0xae
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#define SSD13XX_DISPLAY_ON 0xaf
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#define SSD13XX_SET_SEG_REMAP_MASK GENMASK(0, 0)
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#define SSD13XX_SET_SEG_REMAP_SET(val) FIELD_PREP(SSD13XX_SET_SEG_REMAP_MASK, (val))
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/* ssd130x commands */
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#define SSD130X_PAGE_COL_START_LOW 0x00
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#define SSD130X_PAGE_COL_START_HIGH 0x10
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#define SSD130X_SET_ADDRESS_MODE 0x20
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#define SSD130X_SET_COL_RANGE 0x21
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#define SSD130X_SET_PAGE_RANGE 0x22
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#define SSD130X_CONTRAST 0x81
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#define SSD130X_SET_LOOKUP_TABLE 0x91
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#define SSD130X_CHARGE_PUMP 0x8d
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#define SSD130X_SET_SEG_REMAP 0xa0
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#define SSD130X_DISPLAY_OFF 0xae
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#define SSD130X_SET_MULTIPLEX_RATIO 0xa8
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#define SSD130X_DISPLAY_ON 0xaf
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#define SSD130X_START_PAGE_ADDRESS 0xb0
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#define SSD130X_SET_COM_SCAN_DIR 0xc0
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#define SSD130X_SET_DISPLAY_OFFSET 0xd3
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@ -65,13 +71,12 @@
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#define SSD130X_SET_COM_PINS_CONFIG 0xda
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#define SSD130X_SET_VCOMH 0xdb
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/* ssd130x commands accessors */
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#define SSD130X_PAGE_COL_START_MASK GENMASK(3, 0)
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#define SSD130X_PAGE_COL_START_HIGH_SET(val) FIELD_PREP(SSD130X_PAGE_COL_START_MASK, (val) >> 4)
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#define SSD130X_PAGE_COL_START_LOW_SET(val) FIELD_PREP(SSD130X_PAGE_COL_START_MASK, (val))
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#define SSD130X_START_PAGE_ADDRESS_MASK GENMASK(2, 0)
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#define SSD130X_START_PAGE_ADDRESS_SET(val) FIELD_PREP(SSD130X_START_PAGE_ADDRESS_MASK, (val))
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#define SSD130X_SET_SEG_REMAP_MASK GENMASK(0, 0)
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#define SSD130X_SET_SEG_REMAP_SET(val) FIELD_PREP(SSD130X_SET_SEG_REMAP_MASK, (val))
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#define SSD130X_SET_COM_SCAN_DIR_MASK GENMASK(3, 3)
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#define SSD130X_SET_COM_SCAN_DIR_SET(val) FIELD_PREP(SSD130X_SET_COM_SCAN_DIR_MASK, (val))
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#define SSD130X_SET_CLOCK_DIV_MASK GENMASK(3, 0)
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@ -171,20 +176,20 @@ static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm)
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}
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/*
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* Helper to write data (SSD130X_DATA) to the device.
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* Helper to write data (SSD13XX_DATA) to the device.
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*/
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static int ssd130x_write_data(struct ssd130x_device *ssd130x, u8 *values, int count)
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{
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return regmap_bulk_write(ssd130x->regmap, SSD130X_DATA, values, count);
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return regmap_bulk_write(ssd130x->regmap, SSD13XX_DATA, values, count);
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}
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/*
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* Helper to write command (SSD130X_COMMAND). The fist variadic argument
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* Helper to write command (SSD13XX_COMMAND). The fist variadic argument
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* is the command to write and the following are the command options.
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*
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* Note that the ssd130x protocol requires each command and option to be
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* written as a SSD130X_COMMAND device register value. That is why a call
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* to regmap_write(..., SSD130X_COMMAND, ...) is done for each argument.
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* Note that the ssd13xx protocol requires each command and option to be
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* written as a SSD13XX_COMMAND device register value. That is why a call
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* to regmap_write(..., SSD13XX_COMMAND, ...) is done for each argument.
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*/
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static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count,
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/* u8 cmd, u8 option, ... */...)
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@ -197,7 +202,7 @@ static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count,
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do {
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value = va_arg(ap, int);
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ret = regmap_write(ssd130x->regmap, SSD130X_COMMAND, value);
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ret = regmap_write(ssd130x->regmap, SSD13XX_COMMAND, value);
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if (ret)
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goto out_end;
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} while (--count);
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@ -341,13 +346,13 @@ static int ssd130x_init(struct ssd130x_device *ssd130x)
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int ret;
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/* Set initial contrast */
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ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_CONTRAST, ssd130x->contrast);
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ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_CONTRAST, ssd130x->contrast);
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if (ret < 0)
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return ret;
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/* Set segment re-map */
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seg_remap = (SSD130X_SET_SEG_REMAP |
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SSD130X_SET_SEG_REMAP_SET(ssd130x->seg_remap));
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seg_remap = (SSD13XX_SET_SEG_REMAP |
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SSD13XX_SET_SEG_REMAP_SET(ssd130x->seg_remap));
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ret = ssd130x_write_cmd(ssd130x, 1, seg_remap);
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if (ret < 0)
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return ret;
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@ -360,7 +365,7 @@ static int ssd130x_init(struct ssd130x_device *ssd130x)
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return ret;
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/* Set multiplex ratio value */
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ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
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ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
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if (ret < 0)
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return ret;
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@ -915,7 +920,7 @@ static void ssd130x_encoder_atomic_enable(struct drm_encoder *encoder,
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if (ret)
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goto power_off;
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ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_ON);
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ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_ON);
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backlight_enable(ssd130x->bl_dev);
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@ -934,7 +939,7 @@ static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder,
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backlight_disable(ssd130x->bl_dev);
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ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_OFF);
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ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_OFF);
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ssd130x_power_off(ssd130x);
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}
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@ -1010,7 +1015,7 @@ static int ssd130x_update_bl(struct backlight_device *bdev)
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ssd130x->contrast = brightness;
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ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_CONTRAST);
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ret = ssd130x_write_cmd(ssd130x, 1, SSD13XX_CONTRAST);
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if (ret < 0)
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return ret;
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@ -21,8 +21,8 @@
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#include <linux/regmap.h>
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#define SSD130X_DATA 0x40
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#define SSD130X_COMMAND 0x80
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#define SSD13XX_DATA 0x40
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#define SSD13XX_COMMAND 0x80
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enum ssd130x_family_ids {
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SSD130X_FAMILY
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