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authorWon Hyoung Lee <whlee@sta.samsung.com>2011-08-10 14:59:07 -0700
committerMike Lockwood <lockwood@android.com>2011-08-27 10:10:36 -0400
commitd305f272fa73563b27c39c8860117444b641729b (patch)
treed5a9e24573cdc850f9952aafbc65c09486b2aa38 /liblight
parente7f9424edbfd1bc12facc33dc516dacf8a892f88 (diff)
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LED: Add LED HAL to light module
adding LED HAL for an30259a device The device file is /dev/an30259a_leds. Change-Id: I071d081cde05f2b8626992f3831f55be09fddce5 Signed-off-by: Won Hyoung Lee <whlee@sta.samsung.com> Signed-off-by: Mike Lockwood <lockwood@android.com>
Diffstat (limited to 'liblight')
-rw-r--r--[-rwxr-xr-x]liblight/lights.c150
1 files changed, 147 insertions, 3 deletions
diff --git a/liblight/lights.c b/liblight/lights.c
index ac6eafc..74f0db4 100755..100644
--- a/liblight/lights.c
+++ b/liblight/lights.c
@@ -24,11 +24,68 @@
#include <sys/ioctl.h>
#include <sys/types.h>
#include <hardware/lights.h>
+#include <linux/leds-an30259a.h>
static pthread_once_t g_init = PTHREAD_ONCE_INIT;
static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
char const *const LCD_FILE = "/sys/class/backlight/s6e8aa0/brightness";
+char const *const LED_FILE = "/dev/an30259a_leds";
+
+static __u8 old_imax = 1;
+
+/* configurations for pulse modes of NOTIFICATIONS and ATTENTION */
+/* TODO: Once google fixes values, these values should be modified. */
+struct an30259a_pulse_config_t {
+ __u8 imax;
+};
+struct an30259a_pulse_config_t an30259a_pulse_config[2] = {
+ { /* notifications */
+ .imax = 1,
+ },
+ { /* attention */
+ .imax = 1,
+ },
+};
+
+/* configurations for slope mode of NOTIFICATION and ATTENTION */
+/* TODO: Once google fixes values, these values should be modified. */
+struct an30259a_slope_config_t {
+ __u8 imax;
+ struct an30259a_pr_control led;
+};
+
+struct an30259a_slope_config_t an30259a_slope_config[2] = {
+ { /* notifications */
+ .imax = 1,
+ .led = {
+ .state = LED_LIGHT_SLOPE,
+ .start_delay = 1000,
+ .time_slope_up_1 = 1000,
+ .time_slope_up_2 = 1000,
+ .time_slope_down_1 = 1000,
+ .time_slope_down_2 = 1000,
+ .mid_brightness = 127,
+ },
+ },
+ { /* attention */
+ .imax = 1,
+ .led = {
+ .state = LED_LIGHT_SLOPE,
+ .start_delay = 2000,
+ .time_slope_up_1 = 2000,
+ .time_slope_up_2 = 2000,
+ .time_slope_down_1 = 2000,
+ .time_slope_down_2 = 2000,
+ .mid_brightness = 127,
+ },
+ },
+};
+
+void init_g_lock(void)
+{
+ pthread_mutex_init(&g_lock, NULL);
+}
static int write_int(char const *path, int value)
{
@@ -85,20 +142,107 @@ static int close_lights(struct light_device_t *dev)
return 0;
}
+/* LEDs */
+static int write_leds(struct an30259a_pr_control *led, __u8 imax)
+{
+ int err = 0;
+ int fd;
+
+LOGD("write_leds %d\n", imax);
+ pthread_mutex_lock(&g_lock);
+
+ fd = open(LED_FILE, O_RDWR);
+ if (fd >= 0) {
+ if (imax != old_imax) {
+ err = ioctl(fd, AN30259A_PR_SET_IMAX, &imax);
+ if (err >= 0)
+ old_imax = imax;
+ else
+ LOGE("failed to set imax");
+ }
+
+ if (err >= 0) {
+ err = ioctl(fd, AN30259A_PR_SET_LED, led);
+ if (err < 0)
+ LOGE("failed to set leds!");
+ }
+
+ close(fd);
+ } else {
+ LOGE("failed to open %s!", LED_FILE);
+ err = -errno;
+ }
+
+ pthread_mutex_unlock(&g_lock);
+
+ return err;
+}
+
+static int set_light_leds(struct light_state_t const *state, int type)
+{
+ struct an30259a_pr_control led;
+ __u8 imax;
+
+ memset(&led, 0, sizeof(led));
+
+ switch (state->flashMode) {
+ case LIGHT_FLASH_NONE:
+LOGD("set_light_leds LIGHT_FLASH_NONE\n");
+ led.state = LED_LIGHT_OFF;
+ imax = old_imax;
+ break;
+ case LIGHT_FLASH_TIMED:
+LOGD("set_light_leds LIGHT_FLASH_TIMED\n");
+ led.state = LED_LIGHT_PULSE;
+ led.color = state->color & 0x00ffffff;
+ led.time_on = state->flashOnMS;
+ led.time_off = state->flashOffMS;
+ imax = an30259a_pulse_config[type].imax;
+ break;
+ case LIGHT_FLASH_HARDWARE:
+LOGD("set_light_leds LIGHT_FLASH_HARDWARE\n");
+ led = an30259a_slope_config[type].led;
+ led.color = state->color & 0x00ffffff;
+ led.time_on = state->flashOnMS;
+ led.time_off = state->flashOffMS;
+ imax = an30259a_slope_config[type].imax;
+ break;
+ default:
+LOGD("set_light_leds EINVAL\n");
+ return -EINVAL;
+ }
+
+ return write_leds(&led, imax);
+}
+
+static int set_light_leds_notifications(struct light_device_t *dev,
+ struct light_state_t const *state)
+{
+ return set_light_leds(state, 0);
+}
+
+static int set_light_leds_attention(struct light_device_t *dev,
+ struct light_state_t const *state)
+{
+ return set_light_leds(state, 1);
+}
+
static int open_lights(const struct hw_module_t *module, char const *name,
struct hw_device_t **device)
{
int (*set_light)(struct light_device_t *dev,
struct light_state_t const *state);
- LOGV("open_lights: open with %s", name);
-
if (0 == strcmp(LIGHT_ID_BACKLIGHT, name))
set_light = set_light_backlight;
+ else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
+ set_light = set_light_leds_notifications;
+ else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
+ set_light = set_light_leds_attention;
else
return -EINVAL;
- pthread_mutex_init(&g_lock, NULL);
+ pthread_once(&g_init, init_g_lock);
struct light_device_t *dev = malloc(sizeof(struct light_device_t));
memset(dev, 0, sizeof(*dev));