static int __devinit qpnp_flash_init(struct qpnp_led_data *led)
{
int rc;
rc = qpnp_led_masked_write(led,
FLASH_LED_STROBE_CTRL(led->base),
FLASH_STROBE_MASK, FLASH_DISABLE_ALL);
if (rc) {
dev_err(&led->spmi_dev->dev,
"LED %d flash write failed(%d)\n", led->id, rc);
return rc;
}
rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base),
FLASH_INIT_MASK, FLASH_ENABLE_MODULE);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Enable reg write failed(%d)\n", rc);
return rc;
}
/* Set flash safety timer */
rc = qpnp_led_masked_write(led, FLASH_SAFETY_TIMER(led->base),
FLASH_SAFETY_TIMER_MASK, led->flash_cfg->duration);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Safety timer reg write failed(%d)\n", rc);
return rc;
}
/* Set max current */
rc = qpnp_led_masked_write(led, FLASH_MAX_CURR(led->base),
FLASH_CURRENT_MASK, FLASH_MAX_LEVEL);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Max current reg write failed(%d)\n", rc);
return rc;
}
/* Set clamp current */
rc = qpnp_led_masked_write(led, FLASH_CLAMP_CURR(led->base),
FLASH_CURRENT_MASK, led->flash_cfg->clamp_curr);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Clamp current reg write failed(%d)\n", rc);
return rc;
}
/* Set timer control - safety or watchdog */
if (led->flash_cfg->safety_timer)
rc = qpnp_led_masked_write(led, FLASH_LED_TMR_CTRL(led->base),
FLASH_TMR_MASK, FLASH_TMR_SAFETY);
else
rc = qpnp_led_masked_write(led, FLASH_LED_TMR_CTRL(led->base),
FLASH_TMR_MASK, FLASH_TMR_WATCHDOG);
if (rc) {
dev_err(&led->spmi_dev->dev,
"LED timer ctrl reg write failed(%d)\n", rc);
return rc;
}
/* Set headroom */
rc = qpnp_led_masked_write(led, FLASH_HEADROOM(led->base),
FLASH_HEADROOM_MASK, led->flash_cfg->headroom);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Headroom reg write failed(%d)\n", rc);
return rc;
}
/* Set mask enable */
rc = qpnp_led_masked_write(led, FLASH_MASK_ENABLE(led->base),
FLASH_MASK_REG_MASK, FLASH_MASK_1);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Mask enable reg write failed(%d)\n", rc);
return rc;
}
/* Set startup delay */
rc = qpnp_led_masked_write(led, FLASH_STARTUP_DELAY(led->base),
FLASH_STARTUP_DLY_MASK, led->flash_cfg->startup_dly);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Startup delay reg write failed(%d)\n", rc);
return rc;
}
rc = qpnp_led_masked_write(led, FLASH_VREG_OK_FORCE(led->base),
FLASH_VREG_MASK, FLASH_HW_VREG_OK);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Vreg OK reg write failed(%d)\n", rc);
return rc;
}
/* Set led current and enable module */
rc = qpnp_led_masked_write(led, led->flash_cfg->current_addr,
FLASH_CURRENT_MASK, led->flash_cfg->current_prgm);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Current reg write failed(%d)\n", rc);
return rc;
}
rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base),
FLASH_ENABLE_MODULE_MASK, FLASH_ENABLE_MODULE);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Enable reg write failed(%d)\n", rc);
return rc;
}
/* dump flash registers */
qpnp_dump_regs(led, flash_debug_regs, ARRAY_SIZE(flash_debug_regs));
return 0;
}
static void qpnp_flash_led_work(struct work_struct *work)
{
struct flash_node_data *flash_node = container_of(work,
struct flash_node_data, work);
struct qpnp_flash_led *led =
dev_get_drvdata(&flash_node->spmi_dev->dev);
int rc, brightness = flash_node->cdev.brightness;
int max_curr_avail_ma;
u8 val;
mutex_lock(&led->flash_led_lock);
if (!brightness)
goto turn_off;
if (brightness < FLASH_LED_MIN_CURRENT_MA)
brightness = FLASH_LED_MIN_CURRENT_MA;
flash_node->prgm_current = brightness;
if (flash_node->boost_regulator && !flash_node->flash_on) {
if (regulator_count_voltages(flash_node->boost_regulator) > 0) {
rc = regulator_set_voltage(flash_node->boost_regulator,
flash_node->boost_voltage_max,
flash_node->boost_voltage_max);
if (rc) {
dev_err(&led->spmi_dev->dev,
"boost regulator set voltage failed\n");
mutex_unlock(&led->flash_led_lock);
return;
}
}
rc = regulator_enable(flash_node->boost_regulator);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Boost regulator enablement failed\n");
goto error_regulator_enable;
}
}
if (flash_node->type == TORCH) {
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_LED_UNLOCK_SECURE(led->base),
FLASH_SECURE_MASK, FLASH_UNLOCK_SECURE);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Secure reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_TORCH(led->base),
FLASH_TORCH_MASK, FLASH_LED_TORCH_ENABLE);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Torch reg write failed\n");
goto exit_flash_led_work;
}
val = (u8)(flash_node->prgm_current * FLASH_TORCH_MAX_LEVEL
/ flash_node->max_current);
rc = qpnp_led_masked_write(led->spmi_dev,
flash_node->current_addr,
FLASH_CURRENT_MASK, val);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Current reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_MAX_CURRENT(led->base),
FLASH_CURRENT_MASK, FLASH_TORCH_MAX_LEVEL);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Max current reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_MODULE_ENABLE_CTRL(led->base),
FLASH_MODULE_ENABLE | flash_node->enable,
FLASH_MODULE_ENABLE | flash_node->enable);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Module enable reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_LED_STROBE_CTRL(led->base),
flash_node->trigger,
flash_node->trigger);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Strobe ctrl reg write failed\n");
goto exit_flash_led_work;
}
} else if (flash_node->type == FLASH) {
if (led->pdata->power_detect_en) {
max_curr_avail_ma =
qpnp_flash_led_get_max_avail_current
(flash_node, led);
if (max_curr_avail_ma < 0) {
dev_err(&led->spmi_dev->dev,
"Failed to get Max available curr\n");
goto exit_flash_led_work;
} else {
if (max_curr_avail_ma <
flash_node->prgm_current) {
dev_err(&led->spmi_dev->dev,
"battery only supports %d mA.\n",
max_curr_avail_ma);
flash_node->prgm_current =
(u16) max_curr_avail_ma;
}
}
}
val = (u8)((flash_node->duration - FLASH_DURATION_DIVIDER)
/ FLASH_DURATION_DIVIDER);
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_SAFETY_TIMER(led->base),
FLASH_SAFETY_TIMER_MASK, val);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Safety timer reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_MAX_CURRENT(led->base),
FLASH_CURRENT_MASK, FLASH_MAX_LEVEL);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Max current reg write failed\n");
goto exit_flash_led_work;
}
val = (u8)(flash_node->prgm_current * FLASH_MAX_LEVEL
/ flash_node->max_current);
rc = qpnp_led_masked_write(led->spmi_dev,
flash_node->current_addr,
FLASH_CURRENT_MASK, val);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Current reg write failed\n");
goto exit_flash_led_work;
}
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_MODULE_ENABLE_CTRL(led->base),
FLASH_MODULE_ENABLE |
flash_node->enable,
FLASH_MODULE_ENABLE |
flash_node->enable);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Module enable reg write failed\n");
goto exit_flash_led_work;
}
usleep(FLASH_RAMP_UP_DELAY_US);
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_LED_STROBE_CTRL(led->base),
flash_node->trigger,
flash_node->trigger);
if (rc) {
dev_err(&led->spmi_dev->dev,
"Strobe reg write failed\n");
goto exit_flash_led_work;
}
}
flash_node->flash_on = true;
mutex_unlock(&led->flash_led_lock);
return;
turn_off:
rc = qpnp_led_masked_write(led->spmi_dev,
FLASH_LED_STROBE_CTRL(led->base),
flash_node->trigger, FLASH_LED_DISABLE);
if (rc) {
dev_err(&led->spmi_dev->dev, "Strobe disable failed\n");
goto exit_flash_led_work;
}
usleep(FLASH_RAMP_DN_DELAY_US);
rc = qpnp_flash_led_module_disable(led, flash_node);
if (rc) {
dev_err(&led->spmi_dev->dev, "Module disable failed\n");
goto exit_flash_led_work;
}
exit_flash_led_work:
if (flash_node->boost_regulator && flash_node->flash_on) {
regulator_disable(flash_node->boost_regulator);
error_regulator_enable:
if (regulator_count_voltages(flash_node->boost_regulator) > 0)
regulator_set_voltage(flash_node->boost_regulator,
0, flash_node->boost_voltage_max);
}
flash_node->flash_on = false;
mutex_unlock(&led->flash_led_lock);
return;
}
