[PATCH V3 5/7] backlight: qcom-wled: Add support for WLED4 peripheral
From: Kiran Gunda
Date: Tue Jun 19 2018 - 07:16:26 EST
WLED4 peripheral is present on some PMICs like pmi8998 and
pm660l. It has a different register map and configurations
are also different. Add support for it.
Signed-off-by: Kiran Gunda <kgunda@xxxxxxxxxxxxxx>
---
drivers/video/backlight/qcom-wled.c | 635 ++++++++++++++++++++++++++++--------
1 file changed, 503 insertions(+), 132 deletions(-)
diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c
index 812f3cb..0bc7fcd 100644
--- a/drivers/video/backlight/qcom-wled.c
+++ b/drivers/video/backlight/qcom-wled.c
@@ -15,59 +15,112 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
+#include <linux/of_address.h>
#include <linux/regmap.h>
/* From DT binding */
+#define WLED_MAX_STRINGS 4
+
#define WLED_DEFAULT_BRIGHTNESS 2048
#define WLED3_SINK_REG_BRIGHT_MAX 0xFFF
-#define WLED3_CTRL_REG_VAL_BASE 0x40
/* WLED3 control registers */
#define WLED3_CTRL_REG_MOD_EN 0x46
-#define WLED3_CTRL_REG_MOD_EN_BIT BIT(7)
#define WLED3_CTRL_REG_MOD_EN_MASK BIT(7)
#define WLED3_CTRL_REG_FREQ 0x4c
-#define WLED3_CTRL_REG_FREQ_MASK 0x0f
+#define WLED3_CTRL_REG_FREQ_MASK GENMASK(3, 0)
#define WLED3_CTRL_REG_OVP 0x4d
-#define WLED3_CTRL_REG_OVP_MASK 0x03
+#define WLED3_CTRL_REG_OVP_MASK GENMASK(1, 0)
#define WLED3_CTRL_REG_ILIMIT 0x4e
-#define WLED3_CTRL_REG_ILIMIT_MASK 0x07
+#define WLED3_CTRL_REG_ILIMIT_MASK GENMASK(2, 0)
/* WLED3 sink registers */
#define WLED3_SINK_REG_SYNC 0x47
-#define WLED3_SINK_REG_SYNC_MASK 0x07
+#define WLED3_SINK_REG_SYNC_MASK GENMASK(2, 0)
+#define WLED4_SINK_REG_SYNC_MASK GENMASK(3, 0)
#define WLED3_SINK_REG_SYNC_LED1 BIT(0)
#define WLED3_SINK_REG_SYNC_LED2 BIT(1)
#define WLED3_SINK_REG_SYNC_LED3 BIT(2)
+#define WLED4_SINK_REG_SYNC_LED4 BIT(3)
#define WLED3_SINK_REG_SYNC_ALL 0x07
+#define WLED4_SINK_REG_SYNC_ALL 0x0f
#define WLED3_SINK_REG_SYNC_CLEAR 0x00
#define WLED3_SINK_REG_CURR_SINK 0x4f
-#define WLED3_SINK_REG_CURR_SINK_MASK 0xe0
-#define WLED3_SINK_REG_CURR_SINK_SHFT 0x05
+#define WLED3_SINK_REG_CURR_SINK_MASK GENMASK(7, 5)
+#define WLED3_SINK_REG_CURR_SINK_SHFT 5
/* WLED3 per-'string' registers below */
-#define WLED3_SINK_REG_STR_OFFSET 0x10
+#define WLED3_SINK_REG_BRIGHT(n) (0x40 + n)
-#define WLED3_SINK_REG_STR_MOD_EN_BASE 0x60
+#define WLED3_SINK_REG_STR_MOD_EN(n) (0x60 + (n * 0x10))
#define WLED3_SINK_REG_STR_MOD_MASK BIT(7)
-#define WLED3_SINK_REG_STR_MOD_EN BIT(7)
-#define WLED3_SINK_REG_STR_FULL_SCALE_CURR 0x62
-#define WLED3_SINK_REG_STR_FULL_SCALE_CURR_MASK 0x1f
+#define WLED3_SINK_REG_STR_FULL_SCALE_CURR(n) (0x62 + (n * 0x10))
+#define WLED3_SINK_REG_STR_FULL_SCALE_CURR_MASK GENMASK(4, 0)
-#define WLED3_SINK_REG_STR_MOD_SRC_BASE 0x63
-#define WLED3_SINK_REG_STR_MOD_SRC_MASK 0x01
+#define WLED3_SINK_REG_STR_MOD_SRC(n) (0x63 + (n * 0x10))
+#define WLED3_SINK_REG_STR_MOD_SRC_MASK BIT(0)
#define WLED3_SINK_REG_STR_MOD_SRC_INT 0x00
#define WLED3_SINK_REG_STR_MOD_SRC_EXT 0x01
-#define WLED3_SINK_REG_STR_CABC_BASE 0x66
+#define WLED3_SINK_REG_STR_CABC(n) (0x66 + (n * 0x10))
#define WLED3_SINK_REG_STR_CABC_MASK BIT(7)
-#define WLED3_SINK_REG_STR_CABC_EN BIT(7)
+
+/* WLED4 sink registers */
+#define WLED4_SINK_REG_CURR_SINK 0x46
+#define WLED4_SINK_REG_CURR_SINK_MASK GENMASK(7, 4)
+#define WLED4_SINK_REG_CURR_SINK_SHFT 4
+
+/* WLED4 per-'string' registers below */
+#define WLED4_SINK_REG_STR_MOD_EN(n) (0x50 + (n * 0x10))
+#define WLED4_SINK_REG_STR_MOD_MASK BIT(7)
+
+#define WLED4_SINK_REG_STR_FULL_SCALE_CURR(n) (0x52 + (n * 0x10))
+#define WLED4_SINK_REG_STR_FULL_SCALE_CURR_MASK GENMASK(3, 0)
+
+#define WLED4_SINK_REG_STR_MOD_SRC(n) (0x53 + (n * 0x10))
+#define WLED4_SINK_REG_STR_MOD_SRC_MASK BIT(0)
+#define WLED4_SINK_REG_STR_MOD_SRC_INT 0x00
+#define WLED4_SINK_REG_STR_MOD_SRC_EXT 0x01
+
+#define WLED4_SINK_REG_STR_CABC(n) (0x56 + (n * 0x10))
+#define WLED4_SINK_REG_STR_CABC_MASK BIT(7)
+
+#define WLED4_SINK_REG_BRIGHT(n) (0x57 + (n * 0x10))
+
+enum wled_version {
+ WLED_PM8941 = 3,
+ WLED_PMI8998,
+ WLED_PM660L,
+};
+
+static const int version_table[] = {
+ [0] = WLED_PM8941,
+ [1] = WLED_PMI8998,
+ [2] = WLED_PM660L,
+};
+
+struct wled_var_cfg {
+ const u32 *values;
+ u32 (*fn)(u32);
+ int size;
+};
+
+struct wled_u32_opts {
+ const char *name;
+ u32 *val_ptr;
+ const struct wled_var_cfg *cfg;
+};
+
+struct wled_bool_opts {
+ const char *name;
+ bool *val_ptr;
+};
struct wled_config {
u32 boost_i_limit;
@@ -75,132 +128,224 @@ struct wled_config {
u32 switch_freq;
u32 num_strings;
u32 string_i_limit;
+ u32 enabled_strings[WLED_MAX_STRINGS];
bool cs_out_en;
bool ext_gen;
- bool cabc_en;
+ bool cabc;
};
struct wled {
const char *name;
+ struct device *dev;
struct regmap *regmap;
- u16 addr;
+ u16 ctrl_addr;
+ u16 sink_addr;
+ u32 brightness;
+ u32 max_brightness;
+ const int *version;
struct wled_config cfg;
+ int (*wled_set_brightness)(struct wled *wled, u16 brightness);
+ int (*wled_sync_toggle)(struct wled *wled);
};
-static int wled_update_status(struct backlight_device *bl)
+static int wled3_set_brightness(struct wled *wled, u16 brightness)
{
- struct wled *wled = bl_get_data(bl);
- u16 val = bl->props.brightness;
- u8 ctrl = 0;
- int rc;
- int i;
+ int rc, i;
+ u8 v[2];
- if (bl->props.power != FB_BLANK_UNBLANK ||
- bl->props.fb_blank != FB_BLANK_UNBLANK ||
- bl->props.state & BL_CORE_FBBLANK)
- val = 0;
+ v[0] = brightness & 0xff;
+ v[1] = (brightness >> 8) & 0xf;
- if (val != 0)
- ctrl = WLED3_CTRL_REG_MOD_EN_BIT;
+ for (i = 0; i < wled->cfg.num_strings; ++i) {
+ rc = regmap_bulk_write(wled->regmap, wled->ctrl_addr +
+ WLED3_SINK_REG_BRIGHT(i), v, 2);
+ if (rc < 0)
+ return rc;
+ }
- rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_CTRL_REG_MOD_EN,
- WLED3_CTRL_REG_MOD_EN_MASK, ctrl);
- if (rc)
- return rc;
+ return 0;
+}
- for (i = 0; i < wled->cfg.num_strings; ++i) {
- u8 v[2] = { val & 0xff, (val >> 8) & 0xf };
+static int wled4_set_brightness(struct wled *wled, u16 brightness)
+{
+ int rc, i;
+ u16 low_limit = wled->max_brightness * 4 / 1000;
+ u8 v[2];
- rc = regmap_bulk_write(wled->regmap,
- wled->addr + WLED3_CTRL_REG_VAL_BASE + 2 * i,
- v, 2);
- if (rc)
+ /* WLED4's lower limit of operation is 0.4% */
+ if (brightness > 0 && brightness < low_limit)
+ brightness = low_limit;
+
+ v[0] = brightness & 0xff;
+ v[1] = (brightness >> 8) & 0xf;
+
+ for (i = 0; i < wled->cfg.num_strings; ++i) {
+ rc = regmap_bulk_write(wled->regmap, wled->sink_addr +
+ WLED4_SINK_REG_BRIGHT(i), v, 2);
+ if (rc < 0)
return rc;
}
+ return 0;
+}
+
+static int wled_module_enable(struct wled *wled, int val)
+{
+ int rc;
+
+ rc = regmap_update_bits(wled->regmap, wled->ctrl_addr +
+ WLED3_CTRL_REG_MOD_EN,
+ WLED3_CTRL_REG_MOD_EN_MASK,
+ WLED3_CTRL_REG_MOD_EN_MASK);
+ return rc;
+}
+
+static int wled3_sync_toggle(struct wled *wled)
+{
+ int rc;
+
rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_SINK_REG_SYNC,
- WLED3_SINK_REG_SYNC_MASK, WLED3_SINK_REG_SYNC_ALL);
- if (rc)
+ wled->ctrl_addr + WLED3_SINK_REG_SYNC,
+ WLED3_SINK_REG_SYNC_MASK,
+ WLED3_SINK_REG_SYNC_MASK);
+ if (rc < 0)
return rc;
rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_SINK_REG_SYNC,
- WLED3_SINK_REG_SYNC_MASK, WLED3_SINK_REG_SYNC_CLEAR);
+ wled->ctrl_addr + WLED3_SINK_REG_SYNC,
+ WLED3_SINK_REG_SYNC_MASK,
+ WLED3_SINK_REG_SYNC_CLEAR);
+
return rc;
}
-static int wled_setup(struct wled *wled)
+static int wled4_sync_toggle(struct wled *wled)
{
int rc;
- int i;
rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_CTRL_REG_OVP,
- WLED3_CTRL_REG_OVP_MASK, wled->cfg.ovp);
- if (rc)
+ wled->sink_addr + WLED3_SINK_REG_SYNC,
+ WLED4_SINK_REG_SYNC_MASK,
+ WLED4_SINK_REG_SYNC_MASK);
+ if (rc < 0)
return rc;
rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_CTRL_REG_ILIMIT,
- WLED3_CTRL_REG_ILIMIT_MASK, wled->cfg.boost_i_limit);
+ wled->sink_addr + WLED3_SINK_REG_SYNC,
+ WLED4_SINK_REG_SYNC_MASK,
+ WLED3_SINK_REG_SYNC_CLEAR);
+
+ return rc;
+}
+
+static int wled_update_status(struct backlight_device *bl)
+{
+ struct wled *wled = bl_get_data(bl);
+ u16 brightness = bl->props.brightness;
+ int rc = 0;
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & BL_CORE_FBBLANK)
+ brightness = 0;
+
+ if (brightness) {
+ rc = wled->wled_set_brightness(wled, brightness);
+ if (rc < 0) {
+ dev_err(wled->dev, "wled failed to set brightness rc:%d\n",
+ rc);
+ return rc;
+ }
+
+ rc = wled->wled_sync_toggle(wled);
+ if (rc < 0) {
+ dev_err(wled->dev, "wled sync failed rc:%d\n", rc);
+ return rc;
+ }
+ }
+
+ if (!!brightness != !!wled->brightness) {
+ rc = wled_module_enable(wled, !!brightness);
+ if (rc < 0) {
+ dev_err(wled->dev, "wled enable failed rc:%d\n", rc);
+ return rc;
+ }
+ }
+
+ wled->brightness = brightness;
+
+ return rc;
+}
+
+static int wled3_setup(struct wled *wled)
+{
+ u16 addr;
+ u8 sink_en = 0;
+ int rc, i, j;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_CTRL_REG_OVP,
+ WLED3_CTRL_REG_OVP_MASK, wled->cfg.ovp);
if (rc)
return rc;
rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_CTRL_REG_FREQ,
- WLED3_CTRL_REG_FREQ_MASK, wled->cfg.switch_freq);
+ wled->ctrl_addr + WLED3_CTRL_REG_ILIMIT,
+ WLED3_CTRL_REG_ILIMIT_MASK,
+ wled->cfg.boost_i_limit);
if (rc)
return rc;
- if (wled->cfg.cs_out_en) {
- u8 all = (BIT(wled->cfg.num_strings) - 1)
- << WLED3_SINK_REG_CURR_SINK_SHFT;
-
- rc = regmap_update_bits(wled->regmap,
- wled->addr + WLED3_SINK_REG_CURR_SINK,
- WLED3_SINK_REG_CURR_SINK_MASK, all);
- if (rc)
- return rc;
- }
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_CTRL_REG_FREQ,
+ WLED3_CTRL_REG_FREQ_MASK,
+ wled->cfg.switch_freq);
+ if (rc)
+ return rc;
for (i = 0; i < wled->cfg.num_strings; ++i) {
- u16 addr = wled->addr + WLED3_SINK_REG_STR_OFFSET * i;
-
- rc = regmap_update_bits(wled->regmap,
- addr + WLED3_SINK_REG_STR_MOD_EN_BASE,
- WLED3_SINK_REG_STR_MOD_MASK,
- WLED3_SINK_REG_STR_MOD_EN);
+ j = wled->cfg.enabled_strings[i];
+ addr = wled->ctrl_addr + WLED3_SINK_REG_STR_MOD_EN(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED3_SINK_REG_STR_MOD_MASK,
+ WLED3_SINK_REG_STR_MOD_MASK);
if (rc)
return rc;
if (wled->cfg.ext_gen) {
- rc = regmap_update_bits(wled->regmap,
- addr + WLED3_SINK_REG_STR_MOD_SRC_BASE,
- WLED3_SINK_REG_STR_MOD_SRC_MASK,
- WLED3_SINK_REG_STR_MOD_SRC_EXT);
+ addr = wled->ctrl_addr + WLED3_SINK_REG_STR_MOD_SRC(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED3_SINK_REG_STR_MOD_SRC_MASK,
+ WLED3_SINK_REG_STR_MOD_SRC_EXT);
if (rc)
return rc;
}
- rc = regmap_update_bits(wled->regmap,
- addr + WLED3_SINK_REG_STR_FULL_SCALE_CURR,
- WLED3_SINK_REG_STR_FULL_SCALE_CURR_MASK,
- wled->cfg.string_i_limit);
+ addr = wled->ctrl_addr + WLED3_SINK_REG_STR_FULL_SCALE_CURR(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED3_SINK_REG_STR_FULL_SCALE_CURR_MASK,
+ wled->cfg.string_i_limit);
if (rc)
return rc;
- rc = regmap_update_bits(wled->regmap,
- addr + WLED3_SINK_REG_STR_CABC_BASE,
- WLED3_SINK_REG_STR_CABC_MASK,
- wled->cfg.cabc_en ?
- WLED3_SINK_REG_STR_CABC_EN : 0);
+ addr = wled->ctrl_addr + WLED3_SINK_REG_STR_CABC(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED3_SINK_REG_STR_CABC_MASK,
+ wled->cfg.cabc ?
+ WLED3_SINK_REG_STR_CABC_MASK : 0);
if (rc)
return rc;
+
+ sink_en |= BIT(j + WLED3_SINK_REG_CURR_SINK_SHFT);
}
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_SINK_REG_CURR_SINK,
+ WLED3_SINK_REG_CURR_SINK_MASK, sink_en);
+ if (rc)
+ return rc;
+
return 0;
}
@@ -208,17 +353,125 @@ static int wled_setup(struct wled *wled)
.boost_i_limit = 3,
.string_i_limit = 20,
.ovp = 2,
+ .num_strings = 3,
.switch_freq = 5,
- .num_strings = 0,
.cs_out_en = false,
.ext_gen = false,
- .cabc_en = false,
+ .cabc = false,
};
-struct wled_var_cfg {
- const u32 *values;
- u32 (*fn)(u32);
- int size;
+static int wled4_setup(struct wled *wled)
+{
+ int rc, temp, i, j;
+ u16 addr;
+ u8 sink_en = 0;
+ u32 sink_cfg = 0;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_CTRL_REG_OVP,
+ WLED3_CTRL_REG_OVP_MASK, wled->cfg.ovp);
+ if (rc < 0)
+ return rc;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_CTRL_REG_ILIMIT,
+ WLED3_CTRL_REG_ILIMIT_MASK,
+ wled->cfg.boost_i_limit);
+ if (rc < 0)
+ return rc;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->ctrl_addr + WLED3_CTRL_REG_FREQ,
+ WLED3_CTRL_REG_FREQ_MASK,
+ wled->cfg.switch_freq);
+ if (rc < 0)
+ return rc;
+
+ rc = regmap_read(wled->regmap, wled->sink_addr +
+ WLED4_SINK_REG_CURR_SINK, &sink_cfg);
+ if (rc < 0)
+ return rc;
+
+ for (i = 0; i < wled->cfg.num_strings; i++) {
+ j = wled->cfg.enabled_strings[i];
+ temp = j + WLED4_SINK_REG_CURR_SINK_SHFT;
+ sink_en |= 1 << temp;
+ }
+
+ if (sink_cfg == sink_en)
+ return 0;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->sink_addr + WLED4_SINK_REG_CURR_SINK,
+ WLED4_SINK_REG_CURR_SINK_MASK, 0);
+ if (rc < 0)
+ return rc;
+
+ rc = regmap_update_bits(wled->regmap, wled->ctrl_addr +
+ WLED3_CTRL_REG_MOD_EN,
+ WLED3_CTRL_REG_MOD_EN_MASK, 0);
+ if (rc < 0)
+ return rc;
+
+ /* Per sink/string configuration */
+ for (i = 0; i < wled->cfg.num_strings; i++) {
+ j = wled->cfg.enabled_strings[i];
+
+ addr = wled->sink_addr +
+ WLED4_SINK_REG_STR_MOD_EN(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED4_SINK_REG_STR_MOD_MASK,
+ WLED4_SINK_REG_STR_MOD_MASK);
+ if (rc < 0)
+ return rc;
+
+ addr = wled->sink_addr +
+ WLED4_SINK_REG_STR_FULL_SCALE_CURR(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED4_SINK_REG_STR_FULL_SCALE_CURR_MASK,
+ wled->cfg.string_i_limit);
+ if (rc < 0)
+ return rc;
+
+ addr = wled->sink_addr +
+ WLED4_SINK_REG_STR_CABC(j);
+ rc = regmap_update_bits(wled->regmap, addr,
+ WLED4_SINK_REG_STR_CABC_MASK,
+ wled->cfg.cabc ?
+ WLED4_SINK_REG_STR_CABC_MASK : 0);
+ if (rc < 0)
+ return rc;
+ }
+
+ rc = regmap_update_bits(wled->regmap, wled->ctrl_addr +
+ WLED3_CTRL_REG_MOD_EN,
+ WLED3_CTRL_REG_MOD_EN_MASK,
+ WLED3_CTRL_REG_MOD_EN_MASK);
+ if (rc < 0)
+ return rc;
+
+ rc = regmap_update_bits(wled->regmap,
+ wled->sink_addr + WLED4_SINK_REG_CURR_SINK,
+ WLED4_SINK_REG_CURR_SINK_MASK, sink_en);
+ if (rc < 0)
+ return rc;
+
+ rc = wled->wled_sync_toggle(wled);
+ if (rc < 0) {
+ dev_err(wled->dev, "Failed to toggle sync reg rc:%d\n", rc);
+ return rc;
+ }
+
+ return 0;
+}
+
+static const struct wled_config wled4_config_defaults = {
+ .boost_i_limit = 4,
+ .string_i_limit = 10,
+ .ovp = 1,
+ .num_strings = 4,
+ .switch_freq = 11,
+ .cabc = false,
};
static const u32 wled3_boost_i_limit_values[] = {
@@ -230,6 +483,15 @@ struct wled_var_cfg {
.size = ARRAY_SIZE(wled3_boost_i_limit_values),
};
+static const u32 wled4_boost_i_limit_values[] = {
+ 105, 280, 450, 620, 970, 1150, 1300, 1500,
+};
+
+static const struct wled_var_cfg wled4_boost_i_limit_cfg = {
+ .values = wled4_boost_i_limit_values,
+ .size = ARRAY_SIZE(wled4_boost_i_limit_values),
+};
+
static const u32 wled3_ovp_values[] = {
35, 32, 29, 27,
};
@@ -239,6 +501,15 @@ struct wled_var_cfg {
.size = ARRAY_SIZE(wled3_ovp_values),
};
+static const u32 wled4_ovp_values[] = {
+ 31100, 29600, 19600, 18100,
+};
+
+static const struct wled_var_cfg wled4_ovp_cfg = {
+ .values = wled4_ovp_values,
+ .size = ARRAY_SIZE(wled4_ovp_values),
+};
+
static u32 wled3_num_strings_values_fn(u32 idx)
{
return idx + 1;
@@ -249,6 +520,11 @@ static u32 wled3_num_strings_values_fn(u32 idx)
.size = 3,
};
+static const struct wled_var_cfg wled4_num_strings_cfg = {
+ .fn = wled3_num_strings_values_fn,
+ .size = 4,
+};
+
static u32 wled3_switch_freq_values_fn(u32 idx)
{
return 19200 / (2 * (1 + idx));
@@ -263,7 +539,25 @@ static u32 wled3_switch_freq_values_fn(u32 idx)
.size = 26,
};
-static u32 wled3_values(const struct wled_var_cfg *cfg, u32 idx)
+static const u32 wled4_string_i_limit_values[] = {
+ 0, 2500, 5000, 7500, 10000, 12500, 15000, 17500, 20000,
+ 22500, 25000, 27500, 30000,
+};
+
+static const struct wled_var_cfg wled4_string_i_limit_cfg = {
+ .values = wled4_string_i_limit_values,
+ .size = ARRAY_SIZE(wled4_string_i_limit_values),
+};
+
+static const struct wled_var_cfg wled3_string_cfg = {
+ .size = 8,
+};
+
+static const struct wled_var_cfg wled4_string_cfg = {
+ .size = 16,
+};
+
+static u32 wled_values(const struct wled_var_cfg *cfg, u32 idx)
{
if (idx >= cfg->size)
return UINT_MAX;
@@ -274,68 +568,113 @@ static u32 wled3_values(const struct wled_var_cfg *cfg, u32 idx)
return idx;
}
-static int wled_configure(struct wled *wled, struct device *dev)
+static int wled_configure(struct wled *wled)
{
struct wled_config *cfg = &wled->cfg;
- u32 val;
- int rc;
- u32 c;
- int i;
- int j;
-
- const struct {
- const char *name;
- u32 *val_ptr;
- const struct wled_var_cfg *cfg;
- } u32_opts[] = {
+ struct device *dev = wled->dev;
+ const __be32 *prop_addr;
+ u32 size, val, c, string_len;
+ int rc, i, j;
+
+ const struct wled_u32_opts *u32_opts = NULL;
+ const struct wled_u32_opts wled3_opts[] = {
{
- "qcom,current-boost-limit",
- &cfg->boost_i_limit,
+ .name = "qcom,current-boost-limit",
+ .val_ptr = &cfg->boost_i_limit,
.cfg = &wled3_boost_i_limit_cfg,
},
{
- "qcom,current-limit",
- &cfg->string_i_limit,
+ .name = "qcom,current-limit",
+ .val_ptr = &cfg->string_i_limit,
.cfg = &wled3_string_i_limit_cfg,
},
{
- "qcom,ovp",
- &cfg->ovp,
+ .name = "qcom,ovp",
+ .val_ptr = &cfg->ovp,
.cfg = &wled3_ovp_cfg,
},
{
- "qcom,switching-freq",
- &cfg->switch_freq,
+ .name = "qcom,switching-freq",
+ .val_ptr = &cfg->switch_freq,
.cfg = &wled3_switch_freq_cfg,
},
{
- "qcom,num-strings",
- &cfg->num_strings,
+ .name = "qcom,num-strings",
+ .val_ptr = &cfg->num_strings,
.cfg = &wled3_num_strings_cfg,
},
};
- const struct {
- const char *name;
- bool *val_ptr;
- } bool_opts[] = {
+
+ const struct wled_u32_opts wled4_opts[] = {
+ {
+ .name = "qcom,current-boost-limit",
+ .val_ptr = &cfg->boost_i_limit,
+ .cfg = &wled4_boost_i_limit_cfg,
+ },
+ {
+ .name = "qcom,current-limit-microamp",
+ .val_ptr = &cfg->string_i_limit,
+ .cfg = &wled4_string_i_limit_cfg,
+ },
+ {
+ .name = "qcom,ovp-millivolt",
+ .val_ptr = &cfg->ovp,
+ .cfg = &wled4_ovp_cfg,
+ },
+ {
+ .name = "qcom,switching-freq",
+ .val_ptr = &cfg->switch_freq,
+ .cfg = &wled3_switch_freq_cfg,
+ },
+ {
+ .name = "qcom,num-strings",
+ .val_ptr = &cfg->num_strings,
+ .cfg = &wled4_num_strings_cfg,
+ },
+ };
+
+ const struct wled_bool_opts bool_opts[] = {
{ "qcom,cs-out", &cfg->cs_out_en, },
{ "qcom,ext-gen", &cfg->ext_gen, },
- { "qcom,cabc", &cfg->cabc_en, },
+ { "qcom,cabc", &cfg->cabc, },
};
- rc = of_property_read_u32(dev->of_node, "reg", &val);
- if (rc || val > 0xffff) {
- dev_err(dev, "invalid IO resources\n");
- return rc ? rc : -EINVAL;
+ prop_addr = of_get_address(dev->of_node, 0, NULL, NULL);
+ if (!prop_addr) {
+ dev_err(wled->dev, "invalid IO resources\n");
+ return -EINVAL;
+ }
+ wled->ctrl_addr = be32_to_cpu(*prop_addr);
+
+ if (*wled->version != WLED_PM8941) {
+ prop_addr = of_get_address(dev->of_node, 1, NULL, NULL);
+ if (!prop_addr) {
+ dev_err(wled->dev, "invalid IO resources\n");
+ return -EINVAL;
+ }
+ wled->sink_addr = be32_to_cpu(*prop_addr);
}
- wled->addr = val;
rc = of_property_read_string(dev->of_node, "label", &wled->name);
if (rc)
wled->name = dev->of_node->name;
- *cfg = wled3_config_defaults;
- for (i = 0; i < ARRAY_SIZE(u32_opts); ++i) {
+ if (*wled->version == WLED_PM8941) {
+ u32_opts = wled3_opts;
+ size = ARRAY_SIZE(wled3_opts);
+ *cfg = wled3_config_defaults;
+ wled->wled_set_brightness = wled3_set_brightness;
+ wled->wled_sync_toggle = wled3_sync_toggle;
+ } else if (*wled->version == WLED_PMI8998 ||
+ *wled->version == WLED_PM660L) {
+ u32_opts = wled4_opts;
+ size = ARRAY_SIZE(wled4_opts);
+ *cfg = wled4_config_defaults;
+ wled->wled_set_brightness = wled4_set_brightness;
+ wled->wled_sync_toggle = wled4_sync_toggle;
+ }
+
+ for (i = 0; i < size; ++i) {
rc = of_property_read_u32(dev->of_node, u32_opts[i].name, &val);
if (rc == -EINVAL) {
continue;
@@ -346,12 +685,15 @@ static int wled_configure(struct wled *wled, struct device *dev)
c = UINT_MAX;
for (j = 0; c != val; j++) {
- c = wled3_values(u32_opts[i].cfg, j);
+ c = wled_values(u32_opts[i].cfg, j);
if (c == UINT_MAX) {
dev_err(dev, "invalid value for '%s'\n",
u32_opts[i].name);
return -EINVAL;
}
+
+ if (c == val)
+ break;
}
dev_dbg(dev, "'%s' = %u\n", u32_opts[i].name, c);
@@ -365,6 +707,15 @@ static int wled_configure(struct wled *wled, struct device *dev)
cfg->num_strings = cfg->num_strings + 1;
+ string_len = of_property_count_elems_of_size(dev->of_node,
+ "qcom,enabled-strings",
+ sizeof(u32));
+ if (string_len > 0)
+ rc = of_property_read_u32_array(dev->of_node,
+ "qcom,enabled-strings",
+ wled->cfg.enabled_strings,
+ sizeof(u32));
+
return 0;
}
@@ -392,15 +743,33 @@ static int wled_probe(struct platform_device *pdev)
return -ENOMEM;
wled->regmap = regmap;
+ wled->dev = &pdev->dev;
- rc = wled_configure(wled, &pdev->dev);
- if (rc)
- return rc;
+ wled->version = of_device_get_match_data(&pdev->dev);
+ if (!wled->version) {
+ dev_err(&pdev->dev, "Unknown device version\n");
+ return -ENODEV;
+ }
- rc = wled_setup(wled);
+ rc = wled_configure(wled);
if (rc)
return rc;
+ if (*wled->version == WLED_PM8941) {
+ rc = wled3_setup(wled);
+ if (rc) {
+ dev_err(&pdev->dev, "wled3_setup failed\n");
+ return rc;
+ }
+ } else if (*wled->version == WLED_PMI8998 ||
+ *wled->version == WLED_PM660L) {
+ rc = wled4_setup(wled);
+ if (rc) {
+ dev_err(&pdev->dev, "wled4_setup failed\n");
+ return rc;
+ }
+ }
+
val = WLED_DEFAULT_BRIGHTNESS;
of_property_read_u32(pdev->dev.of_node, "default-brightness", &val);
@@ -415,7 +784,9 @@ static int wled_probe(struct platform_device *pdev)
};
static const struct of_device_id wled_match_table[] = {
- { .compatible = "qcom,pm8941-wled" },
+ { .compatible = "qcom,pm8941-wled", .data = &version_table[0] },
+ { .compatible = "qcom,pmi8998-wled", .data = &version_table[1] },
+ { .compatible = "qcom,pm660l-wled", .data = &version_table[2] },
{}
};
MODULE_DEVICE_TABLE(of, wled_match_table);
--
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