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Message-ID: <20240620210401.22053-6-ansuelsmth@gmail.com>
Date: Thu, 20 Jun 2024 23:03:21 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Pavel Machek <pavel@....cz>,
Lee Jones <lee@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Jacek Anaszewski <jacek.anaszewski@...il.com>,
linux-leds@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Christian Marangi <ansuelsmth@...il.com>
Subject: [PATCH v7 05/20] leds: leds-lp55xx: Generalize load_engine function
LED driver based on lp55xx have all a very similar implementation for
load_engine function. Move the function to lp55xx-common and rework the
define to be more dynamic instead of having to declare a temp array for
them.
Engine mask are the same for every LED based on lp55xx.
Suggested-by: Lee Jones <lee@...nel.org>
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
drivers/leds/leds-lp5521.c | 26 +++---------------------
drivers/leds/leds-lp5523.c | 26 +++---------------------
drivers/leds/leds-lp5562.c | 24 ++--------------------
drivers/leds/leds-lp55xx-common.c | 33 ++++++++++++++++++++++++++++++-
drivers/leds/leds-lp55xx-common.h | 1 +
drivers/leds/leds-lp8501.c | 17 ++--------------
6 files changed, 43 insertions(+), 84 deletions(-)
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 5015f385cc17..08db470fff6c 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -115,26 +115,6 @@ static void lp5521_set_led_current(struct lp55xx_led *led, u8 led_current)
led_current);
}
-static void lp5521_load_engine(struct lp55xx_chip *chip)
-{
- enum lp55xx_engine_index idx = chip->engine_idx;
- static const u8 mask[] = {
- [LP55XX_ENGINE_1] = LP5521_MODE_R_M,
- [LP55XX_ENGINE_2] = LP5521_MODE_G_M,
- [LP55XX_ENGINE_3] = LP5521_MODE_B_M,
- };
-
- static const u8 val[] = {
- [LP55XX_ENGINE_1] = LP5521_LOAD_R,
- [LP55XX_ENGINE_2] = LP5521_LOAD_G,
- [LP55XX_ENGINE_3] = LP5521_LOAD_B,
- };
-
- lp55xx_update_bits(chip, LP5521_REG_OP_MODE, mask[idx], val[idx]);
-
- lp5521_wait_opmode_done();
-}
-
static void lp5521_stop_engine(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
@@ -264,7 +244,7 @@ static void lp5521_firmware_loaded(struct lp55xx_chip *chip)
* 2) write firmware data into program memory
*/
- lp5521_load_engine(chip);
+ lp55xx_load_engine(chip);
lp5521_update_program_memory(chip, fw->data, fw->size);
}
@@ -415,7 +395,7 @@ static ssize_t store_engine_mode(struct device *dev,
engine->mode = LP55XX_ENGINE_RUN;
} else if (!strncmp(buf, "load", 4)) {
lp5521_stop_engine(chip);
- lp5521_load_engine(chip);
+ lp55xx_load_engine(chip);
engine->mode = LP55XX_ENGINE_LOAD;
} else if (!strncmp(buf, "disabled", 8)) {
lp5521_stop_engine(chip);
@@ -441,7 +421,7 @@ static ssize_t store_engine_load(struct device *dev,
mutex_lock(&chip->lock);
chip->engine_idx = nr;
- lp5521_load_engine(chip);
+ lp55xx_load_engine(chip);
ret = lp5521_update_program_memory(chip, buf, len);
mutex_unlock(&chip->lock);
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index bd0209e2ee42..086b4d8975a4 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -159,26 +159,6 @@ static int lp5523_post_init_device(struct lp55xx_chip *chip)
return lp5523_init_program_engine(chip);
}
-static void lp5523_load_engine(struct lp55xx_chip *chip)
-{
- enum lp55xx_engine_index idx = chip->engine_idx;
- static const u8 mask[] = {
- [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M,
- [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M,
- [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M,
- };
-
- static const u8 val[] = {
- [LP55XX_ENGINE_1] = LP5523_LOAD_ENG1,
- [LP55XX_ENGINE_2] = LP5523_LOAD_ENG2,
- [LP55XX_ENGINE_3] = LP5523_LOAD_ENG3,
- };
-
- lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], val[idx]);
-
- lp5523_wait_opmode_done();
-}
-
static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
@@ -188,7 +168,7 @@ static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip)
[LP55XX_ENGINE_3] = LP5523_PAGE_ENG3,
};
- lp5523_load_engine(chip);
+ lp55xx_load_engine(chip);
lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, page_sel[idx]);
}
@@ -425,7 +405,7 @@ static ssize_t store_engine_mode(struct device *dev,
engine->mode = LP55XX_ENGINE_RUN;
} else if (!strncmp(buf, "load", 4)) {
lp5523_stop_engine(chip);
- lp5523_load_engine(chip);
+ lp55xx_load_engine(chip);
engine->mode = LP55XX_ENGINE_LOAD;
} else if (!strncmp(buf, "disabled", 8)) {
lp5523_stop_engine(chip);
@@ -502,7 +482,7 @@ static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr)
[LP55XX_ENGINE_3] = LP5523_PAGE_MUX3,
};
- lp5523_load_engine(chip);
+ lp55xx_load_engine(chip);
ret = lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, mux_page[nr]);
if (ret)
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 65a6a05c3848..5e26a52f534f 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -124,26 +124,6 @@ static void lp5562_set_led_current(struct lp55xx_led *led, u8 led_current)
lp55xx_write(led->chip, addr[led->chan_nr], led_current);
}
-static void lp5562_load_engine(struct lp55xx_chip *chip)
-{
- enum lp55xx_engine_index idx = chip->engine_idx;
- static const u8 mask[] = {
- [LP55XX_ENGINE_1] = LP5562_MODE_ENG1_M,
- [LP55XX_ENGINE_2] = LP5562_MODE_ENG2_M,
- [LP55XX_ENGINE_3] = LP5562_MODE_ENG3_M,
- };
-
- static const u8 val[] = {
- [LP55XX_ENGINE_1] = LP5562_LOAD_ENG1,
- [LP55XX_ENGINE_2] = LP5562_LOAD_ENG2,
- [LP55XX_ENGINE_3] = LP5562_LOAD_ENG3,
- };
-
- lp55xx_update_bits(chip, LP5562_REG_OP_MODE, mask[idx], val[idx]);
-
- lp5562_wait_opmode_done();
-}
-
static void lp5562_run_engine(struct lp55xx_chip *chip, bool start)
{
int ret;
@@ -270,7 +250,7 @@ static void lp5562_firmware_loaded(struct lp55xx_chip *chip)
* 2) write firmware data into program memory
*/
- lp5562_load_engine(chip);
+ lp55xx_load_engine(chip);
lp5562_update_firmware(chip, fw->data, fw->size);
}
@@ -371,7 +351,7 @@ static int lp5562_run_predef_led_pattern(struct lp55xx_chip *chip, int mode)
/* Load engines */
for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) {
chip->engine_idx = i;
- lp5562_load_engine(chip);
+ lp55xx_load_engine(chip);
}
/* Clear program registers */
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 2949ea56a170..3461158ad372 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -9,6 +9,7 @@
* Derived from leds-lp5521.c, leds-lp5523.c
*/
+#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/firmware.h>
@@ -26,8 +27,24 @@
/* OP MODE require at least 153 us to clear regs */
#define LP55XX_CMD_SLEEP 200
-/* Program Commands */
+/*
+ * Program Memory Operations
+ * Same Mask for each engine for both mode and exec
+ * ENG1 GENMASK(3, 2)
+ * ENG2 GENMASK(5, 4)
+ * ENG3 GENMASK(7, 6)
+ */
#define LP55xx_MODE_DISABLE_ALL_ENG 0x0
+#define LP55xx_MODE_ENG_MASK GENMASK(1, 0)
+#define LP55xx_MODE_DISABLE_ENG FIELD_PREP_CONST(LP55xx_MODE_ENG_MASK, 0x0)
+#define LP55xx_MODE_LOAD_ENG FIELD_PREP_CONST(LP55xx_MODE_ENG_MASK, 0x1)
+#define LP55xx_MODE_RUN_ENG FIELD_PREP_CONST(LP55xx_MODE_ENG_MASK, 0x2)
+#define LP55xx_MODE_HALT_ENG FIELD_PREP_CONST(LP55xx_MODE_ENG_MASK, 0x3)
+
+#define LP55xx_MODE_ENGn_SHIFT(n, shift) ((shift) + (2 * (3 - (n))))
+#define LP55xx_MODE_ENGn_MASK(n, shift) (LP55xx_MODE_ENG_MASK << LP55xx_MODE_ENGn_SHIFT(n, shift))
+#define LP55xx_MODE_ENGn_GET(n, mode, shift) \
+ (((mode) >> LP55xx_MODE_ENGn_SHIFT(n, shift)) & LP55xx_MODE_ENG_MASK)
/* External clock rate */
#define LP55XX_CLK_32K 32768
@@ -76,6 +93,20 @@ void lp55xx_stop_all_engine(struct lp55xx_chip *chip)
}
EXPORT_SYMBOL_GPL(lp55xx_stop_all_engine);
+void lp55xx_load_engine(struct lp55xx_chip *chip)
+{
+ enum lp55xx_engine_index idx = chip->engine_idx;
+ const struct lp55xx_device_config *cfg = chip->cfg;
+ u8 mask, val;
+
+ mask = LP55xx_MODE_ENGn_MASK(idx, cfg->reg_op_mode.shift);
+ val = LP55xx_MODE_LOAD_ENG << LP55xx_MODE_ENGn_SHIFT(idx, cfg->reg_op_mode.shift);
+
+ lp55xx_update_bits(chip, cfg->reg_op_mode.addr, mask, val);
+ lp55xx_wait_opmode_done(chip);
+}
+EXPORT_SYMBOL_GPL(lp55xx_load_engine);
+
static void lp55xx_reset_device(struct lp55xx_chip *chip)
{
const struct lp55xx_device_config *cfg = chip->cfg;
diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index 26a724acac16..bb146bcecdcf 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -202,6 +202,7 @@ extern bool lp55xx_is_extclk_used(struct lp55xx_chip *chip);
/* common chip functions */
extern void lp55xx_stop_all_engine(struct lp55xx_chip *chip);
+extern void lp55xx_load_engine(struct lp55xx_chip *chip);
/* common probe/remove function */
extern int lp55xx_probe(struct i2c_client *client);
diff --git a/drivers/leds/leds-lp8501.c b/drivers/leds/leds-lp8501.c
index d3c718bb8275..04173d6875af 100644
--- a/drivers/leds/leds-lp8501.c
+++ b/drivers/leds/leds-lp8501.c
@@ -119,17 +119,6 @@ static int lp8501_post_init_device(struct lp55xx_chip *chip)
static void lp8501_load_engine(struct lp55xx_chip *chip)
{
enum lp55xx_engine_index idx = chip->engine_idx;
- static const u8 mask[] = {
- [LP55XX_ENGINE_1] = LP8501_MODE_ENG1_M,
- [LP55XX_ENGINE_2] = LP8501_MODE_ENG2_M,
- [LP55XX_ENGINE_3] = LP8501_MODE_ENG3_M,
- };
-
- static const u8 val[] = {
- [LP55XX_ENGINE_1] = LP8501_LOAD_ENG1,
- [LP55XX_ENGINE_2] = LP8501_LOAD_ENG2,
- [LP55XX_ENGINE_3] = LP8501_LOAD_ENG3,
- };
static const u8 page_sel[] = {
[LP55XX_ENGINE_1] = LP8501_PAGE_ENG1,
@@ -137,9 +126,7 @@ static void lp8501_load_engine(struct lp55xx_chip *chip)
[LP55XX_ENGINE_3] = LP8501_PAGE_ENG3,
};
- lp55xx_update_bits(chip, LP8501_REG_OP_MODE, mask[idx], val[idx]);
-
- lp8501_wait_opmode_done();
+ lp55xx_load_engine(chip);
lp55xx_write(chip, LP8501_REG_PROG_PAGE_SEL, page_sel[idx]);
}
@@ -287,7 +274,7 @@ static struct lp55xx_device_config lp8501_cfg = {
},
.engine_busy = {
.addr = LP8501_REG_STATUS,
- .maks = LP8501_ENGINE_BUSY,
+ .mask = LP8501_ENGINE_BUSY,
},
.reset = {
.addr = LP8501_REG_RESET,
--
2.45.1
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