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Message-ID: <20231012065822.1007930-4-javierm@redhat.com>
Date: Thu, 12 Oct 2023 08:58:12 +0200
From: Javier Martinez Canillas <javierm@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Thomas Zimmermann <tzimmermann@...e.de>,
Conor Dooley <conor@...nel.org>,
Peter Robinson <pbrobinson@...il.com>,
Rob Herring <robh@...nel.org>,
Maxime Ripard <mripard@...nel.org>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Javier Martinez Canillas <javierm@...hat.com>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
dri-devel@...ts.freedesktop.org
Subject: [PATCH v2 3/6] 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@...hat.com>
---
(no changes since v1)
drivers/gpu/drm/solomon/ssd130x-spi.c | 4 +--
drivers/gpu/drm/solomon/ssd130x.c | 47 +++++++++++++++------------
drivers/gpu/drm/solomon/ssd130x.h | 4 +--
3 files changed, 30 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/solomon/ssd130x-spi.c b/drivers/gpu/drm/solomon/ssd130x-spi.c
index 257819bccbc8..89989da705d7 100644
--- a/drivers/gpu/drm/solomon/ssd130x-spi.c
+++ b/drivers/gpu/drm/solomon/ssd130x-spi.c
@@ -34,10 +34,10 @@ static int ssd130x_spi_write(void *context, const void *data, size_t count)
struct spi_device *spi = t->spi;
const u8 *reg = data;
- if (*reg == SSD130X_COMMAND)
+ if (*reg == SSD13XX_COMMAND)
gpiod_set_value_cansleep(t->dc, 0);
- if (*reg == SSD130X_DATA)
+ if (*reg == SSD13XX_DATA)
gpiod_set_value_cansleep(t->dc, 1);
/* Remove control byte since is not used in a 4-wire SPI interface */
diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
index 08885c33e1a6..4bdc06d6aed4 100644
--- a/drivers/gpu/drm/solomon/ssd130x.c
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -44,18 +44,24 @@
#define SSD130X_PAGE_HEIGHT 8
+/* ssd13xx commands */
+#define SSD13XX_CONTRAST 0x81
+#define SSD13XX_SET_SEG_REMAP 0xa0
+#define SSD13XX_SET_MULTIPLEX_RATIO 0xa8
+#define SSD13XX_DISPLAY_OFF 0xae
+#define SSD13XX_DISPLAY_ON 0xaf
+
+#define SSD13XX_SET_SEG_REMAP_MASK GENMASK(0, 0)
+#define SSD13XX_SET_SEG_REMAP_SET(val) FIELD_PREP(SSD13XX_SET_SEG_REMAP_MASK, (val))
+
+/* ssd130x commands */
#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_SET_SEG_REMAP 0xa0
-#define SSD130X_DISPLAY_OFF 0xae
-#define SSD130X_SET_MULTIPLEX_RATIO 0xa8
-#define SSD130X_DISPLAY_ON 0xaf
#define SSD130X_START_PAGE_ADDRESS 0xb0
#define SSD130X_SET_COM_SCAN_DIR 0xc0
#define SSD130X_SET_DISPLAY_OFFSET 0xd3
@@ -65,13 +71,12 @@
#define SSD130X_SET_COM_PINS_CONFIG 0xda
#define SSD130X_SET_VCOMH 0xdb
+/* ssd130x commands accessors */
#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)
@@ -177,20 +182,20 @@ static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm)
}
/*
- * Helper to write data (SSD130X_DATA) to the device.
+ * Helper to write data (SSD13XX_DATA) to the device.
*/
static int ssd130x_write_data(struct ssd130x_device *ssd130x, u8 *values, int count)
{
- return regmap_bulk_write(ssd130x->regmap, SSD130X_DATA, values, count);
+ return regmap_bulk_write(ssd130x->regmap, SSD13XX_DATA, values, count);
}
/*
- * Helper to write command (SSD130X_COMMAND). The fist variadic argument
+ * Helper to write command (SSD13XX_COMMAND). The fist variadic argument
* is the command to write and the following are the command options.
*
- * Note that the ssd130x protocol requires each command and option to be
- * written as a SSD130X_COMMAND device register value. That is why a call
- * to regmap_write(..., SSD130X_COMMAND, ...) is done for each argument.
+ * Note that the ssd13xx protocol requires each command and option to be
+ * written as a SSD13XX_COMMAND device register value. That is why a call
+ * to regmap_write(..., SSD13XX_COMMAND, ...) is done for each argument.
*/
static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count,
/* u8 cmd, u8 option, ... */...)
@@ -203,7 +208,7 @@ static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count,
do {
value = va_arg(ap, int);
- ret = regmap_write(ssd130x->regmap, SSD130X_COMMAND, value);
+ ret = regmap_write(ssd130x->regmap, SSD13XX_COMMAND, value);
if (ret)
goto out_end;
} while (--count);
@@ -347,13 +352,13 @@ static int ssd130x_init(struct ssd130x_device *ssd130x)
int ret;
/* Set initial contrast */
- ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_CONTRAST, ssd130x->contrast);
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_CONTRAST, ssd130x->contrast);
if (ret < 0)
return ret;
/* Set segment re-map */
- seg_remap = (SSD130X_SET_SEG_REMAP |
- SSD130X_SET_SEG_REMAP_SET(ssd130x->seg_remap));
+ seg_remap = (SSD13XX_SET_SEG_REMAP |
+ SSD13XX_SET_SEG_REMAP_SET(ssd130x->seg_remap));
ret = ssd130x_write_cmd(ssd130x, 1, seg_remap);
if (ret < 0)
return ret;
@@ -366,7 +371,7 @@ static int ssd130x_init(struct ssd130x_device *ssd130x)
return ret;
/* Set multiplex ratio value */
- ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
+ ret = ssd130x_write_cmd(ssd130x, 2, SSD13XX_SET_MULTIPLEX_RATIO, ssd130x->height - 1);
if (ret < 0)
return ret;
@@ -951,7 +956,7 @@ static void ssd130x_encoder_atomic_enable(struct drm_encoder *encoder,
if (ret)
goto power_off;
- ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_ON);
+ ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_ON);
backlight_enable(ssd130x->bl_dev);
@@ -970,7 +975,7 @@ static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder,
backlight_disable(ssd130x->bl_dev);
- ssd130x_write_cmd(ssd130x, 1, SSD130X_DISPLAY_OFF);
+ ssd130x_write_cmd(ssd130x, 1, SSD13XX_DISPLAY_OFF);
ssd130x_power_off(ssd130x);
}
@@ -1046,7 +1051,7 @@ static int ssd130x_update_bl(struct backlight_device *bdev)
ssd130x->contrast = brightness;
- ret = ssd130x_write_cmd(ssd130x, 1, SSD130X_CONTRAST);
+ ret = ssd130x_write_cmd(ssd130x, 1, SSD13XX_CONTRAST);
if (ret < 0)
return ret;
diff --git a/drivers/gpu/drm/solomon/ssd130x.h b/drivers/gpu/drm/solomon/ssd130x.h
index 5af251676587..b508ab98be2f 100644
--- a/drivers/gpu/drm/solomon/ssd130x.h
+++ b/drivers/gpu/drm/solomon/ssd130x.h
@@ -22,8 +22,8 @@
#include <linux/regmap.h>
#include <linux/iosys-map.h>
-#define SSD130X_DATA 0x40
-#define SSD130X_COMMAND 0x80
+#define SSD13XX_DATA 0x40
+#define SSD13XX_COMMAND 0x80
enum ssd130x_variants {
/* ssd130x family */
--
2.41.0
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