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leds: qpnp-flash: Implement the flash_prepare API

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Add the flash_prepare API to the leds-qpnp-flash driver to
maintain consistent usage of the API by the camera flash driver
across targets.

CRs-Fixed: 1043718
Change-Id: I21cc4b4556b2a4a1a918bfeb1d55ae164d4b5568
Signed-off-by: Devesh Jhunjhunwala <deveshj@codeaurora.org>
This commit is contained in:
Devesh Jhunjhunwala 2016-07-26 16:39:50 -07:00
parent dc12c73b37
commit a0a1d3cd64
1 changed files with 43 additions and 1 deletions
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44
drivers/leds/leds-qpnp-flash.c
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@ -26,11 +26,12 @@
#include <linux/regulator/consumer.h>
#include <linux/workqueue.h>
#include <linux/power_supply.h>
#include <linux/leds-qpnp-flash.h>
#include <linux/qpnp/qpnp-adc.h>
#include <linux/qpnp/qpnp-revid.h>
#include "leds.h"
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include "leds.h"
#define FLASH_LED_PERIPHERAL_SUBTYPE(base) (base + 0x05)
#define FLASH_SAFETY_TIMER(base) (base + 0x40)
@ -1154,6 +1155,47 @@ error_regulator_enable:
return rc;
}
int qpnp_flash_led_prepare(struct led_trigger *trig, int options)
{
struct led_classdev *led_cdev = trigger_to_lcdev(trig);
struct flash_node_data *flash_node;
struct qpnp_flash_led *led;
int rc, val = 0;
if (!led_cdev) {
pr_err("Invalid led_trigger provided\n");
return -EINVAL;
}
flash_node = container_of(led_cdev, struct flash_node_data, cdev);
led = dev_get_drvdata(&flash_node->pdev->dev);
if (!(options & (ENABLE_REGULATOR | QUERY_MAX_CURRENT))) {
dev_err(&led->pdev->dev, "Invalid options %d\n", options);
return -EINVAL;
}
if (options & ENABLE_REGULATOR) {
rc = flash_regulator_enable(led, flash_node, true);
if (rc < 0) {
dev_err(&led->pdev->dev,
"enable regulator failed, rc=%d\n", rc);
return rc;
}
}
if (options & QUERY_MAX_CURRENT) {
val = qpnp_flash_led_get_max_avail_current(flash_node, led);
if (val < 0) {
dev_err(&led->pdev->dev,
"query max current failed, rc=%d\n", val);
return val;
}
}
return val;
}
static void qpnp_flash_led_work(struct work_struct *work)
{
struct flash_node_data *flash_node = container_of(work,