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backlight: qcom-spmi-wled: Add support for PM7325B WLED

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Add new compatible string for PM7325B WLED. Add support to read
battery resistance, current and OCV from battery charger driver
through glink based interface.

While at it update the compatible strings in alphabetical order.

Change-Id: I421c4225862c4f72f00dff14214b1b613c93fa42
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
This commit is contained in:
Jishnu Prakash 2020-12-24 10:27:33 +05:30 committed by Kavya Nunna
parent baff6834a6
commit 0fa6ca2867
1 changed files with 66 additions and 22 deletions
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88
drivers/video/backlight/qcom-spmi-wled.c
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@ -19,6 +19,8 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/power_supply.h>
#include <linux/soc/qcom/battery_charger.h>
#include <linux/regmap.h>
#include <linux/spinlock.h>
#include <linux/leds-qpnp-flash.h>
@ -183,6 +185,7 @@ enum wled_version {
WLED_PMI8998 = 4,
WLED_PM660L,
WLED_PM8150L,
WLED_PM7325B,
};
enum wled_flash_mode {
@ -195,6 +198,7 @@ static const int version_table[] = {
[0] = WLED_PMI8998,
[1] = WLED_PM660L,
[2] = WLED_PM8150L,
[3] = WLED_PM7325B,
};
struct wled_config {
@ -221,6 +225,7 @@ struct wled {
struct platform_device *pdev;
struct regmap *regmap;
struct iio_channel **iio_channels;
struct power_supply *batt_psy;
struct mutex lock;
struct wled_config cfg;
ktime_t last_sc_event_time;
@ -242,6 +247,7 @@ struct wled {
bool auto_calib_done;
bool force_mod_disable;
bool cabc_disabled;
bool use_psy;
int (*cabc_config)(struct wled *wled, bool enable);
struct led_classdev flash_cdev;
@ -300,7 +306,7 @@ static inline bool is_wled4(struct wled *wled)
static inline bool is_wled5(struct wled *wled)
{
if (*wled->version == WLED_PM8150L)
if (*wled->version == WLED_PM8150L || *wled->version == WLED_PM7325B)
return true;
return false;
@ -315,7 +321,7 @@ static int wled_module_enable(struct wled *wled, int val)
return 0;
/* Force HFRC off */
if (*wled->version == WLED_PM8150L) {
if (is_wled5(wled)) {
reg = val ? 0 : 3;
rc = regmap_write(wled->regmap, wled->ctrl_addr +
WLED5_CTRL_PBUS_WRITE_SYNC_CTL, reg);
@ -330,7 +336,7 @@ static int wled_module_enable(struct wled *wled, int val)
return rc;
/* Force HFRC off */
if (*wled->version == WLED_PM8150L && val) {
if (is_wled5(wled) && val) {
rc = regmap_write(wled->regmap, wled->sink_addr +
WLED5_SINK_FLASH_SHDN_CLR_REG, 0);
if (rc < 0)
@ -1562,6 +1568,7 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev,
struct wled *wled;
int rc, ocv_mv, r_bat_mohms, i_bat_ma, i_sink_ma = 0, max_fsc_ma;
int64_t p_out_string, p_out, p_in, v_safe_mv, i_flash_ma, v_ph_mv;
union power_supply_propval prop = {};
if (!strcmp(led_cdev->name, "wled_switch"))
wled = container_of(led_cdev, struct wled, switch_cdev);
@ -1577,26 +1584,59 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev,
return 0;
}
rc = wled_iio_get_prop(wled, OCV, &ocv_mv);
if (rc < 0) {
pr_err("Error in getting OCV rc=%d\n", rc);
return rc;
}
ocv_mv /= 1000;
if (wled->use_psy) {
if (!wled->batt_psy)
wled->batt_psy = power_supply_get_by_name("battery");
rc = wled_iio_get_prop(wled, IBAT, &i_bat_ma);
if (rc < 0) {
pr_err("Error in getting I_BAT rc=%d\n", rc);
return rc;
}
i_bat_ma /= 1000;
if (!wled->batt_psy) {
pr_err_ratelimited("Failed to get battery power supply\n");
return -ENODEV;
}
rc = wled_iio_get_prop(wled, RBATT, &r_bat_mohms);
if (rc < 0) {
pr_err("Error in getting R_BAT rc=%d\n", rc);
return rc;
rc = power_supply_get_property(wled->batt_psy, POWER_SUPPLY_PROP_VOLTAGE_OCV,
&prop);
if (rc < 0) {
pr_err("Failed to get battery OCV, rc=%d\n", rc);
return rc;
}
ocv_mv = prop.intval/1000;
rc = power_supply_get_property(wled->batt_psy, POWER_SUPPLY_PROP_CURRENT_NOW,
&prop);
if (rc < 0) {
pr_err("Failed to get battery current, rc=%d\n", rc);
return rc;
}
i_bat_ma = -prop.intval/1000;
rc = qti_battery_charger_get_prop("battery", BATTERY_RESISTANCE, &r_bat_mohms);
if (rc < 0) {
pr_err("Failed to get battery resistance, rc=%d\n", rc);
return rc;
}
r_bat_mohms /= 1000;
} else {
rc = wled_iio_get_prop(wled, OCV, &ocv_mv);
if (rc < 0) {
pr_err("Error in getting OCV rc=%d\n", rc);
return rc;
}
ocv_mv /= 1000;
rc = wled_iio_get_prop(wled, IBAT, &i_bat_ma);
if (rc < 0) {
pr_err("Error in getting I_BAT rc=%d\n", rc);
return rc;
}
i_bat_ma /= 1000;
rc = wled_iio_get_prop(wled, RBATT, &r_bat_mohms);
if (rc < 0) {
pr_err("Error in getting R_BAT rc=%d\n", rc);
return rc;
}
r_bat_mohms /= 1000;
}
r_bat_mohms /= 1000;
pr_debug("ocv: %d i_bat: %d r_bat: %d\n", ocv_mv, i_bat_ma,
r_bat_mohms);
@ -2341,6 +2381,9 @@ static int wled_probe(struct platform_device *pdev)
return -ENODEV;
}
if (*wled->version == WLED_PM7325B)
wled->use_psy = true;
rc = wled_configure(wled, &pdev->dev);
if (rc < 0) {
dev_err(&pdev->dev, "wled configure failed rc:%d\n", rc);
@ -2410,10 +2453,11 @@ static int wled_probe(struct platform_device *pdev)
}
static const struct of_device_id wled_match_table[] = {
{ .compatible = "qcom,pmi8998-spmi-wled", .data = &version_table[0] },
{ .compatible = "qcom,pm8150l-spmi-wled", .data = &version_table[2] },
{ .compatible = "qcom,pm6150l-spmi-wled", .data = &version_table[2] },
{ .compatible = "qcom,pm660l-spmi-wled", .data = &version_table[1] },
{ .compatible = "qcom,pm7325b-spmi-wled", .data = &version_table[3] },
{ .compatible = "qcom,pm8150l-spmi-wled", .data = &version_table[2] },
{ .compatible = "qcom,pmi8998-spmi-wled", .data = &version_table[0] },
{ },
};