/*
* Handle commands from user-space
*/
static int wm8350_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
struct wm8350_rtc *wm_rtc = to_wm8350_rtc_device(dev);
struct wm8350 *wm8350 = to_wm8350_from_rtc(wm_rtc);
switch (cmd) {
case RTC_AIE_OFF: /* alarm off */
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_ALM);
wm_rtc->alarm_enabled = 0;
break;
case RTC_AIE_ON: /* alarm on */
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_ALM);
wm_rtc->alarm_enabled = 1;
break;
case RTC_UIE_OFF: /* update off */
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
wm_rtc->update_enabled = 0;
break;
case RTC_UIE_ON: /* update on */
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_SEC);
wm_rtc->update_enabled = 1;
break;
case RTC_PIE_ON:
if (!wm_rtc->pie_enabled) {
enable_irq(wm_rtc->per_irq);
wm_rtc->pie_enabled = 1;
}
break;
case RTC_PIE_OFF:
if (wm_rtc->pie_enabled) {
disable_irq(wm_rtc->per_irq);
wm_rtc->pie_enabled = 0;
}
break;
case RTC_IRQP_READ: /* read periodic alarm frequency */
return wm_rtc->pie_freq;
case RTC_IRQP_SET: /* set periodic alarm frequency */
return wm8350_rtc_set_pie(wm_rtc, arg);
default:
return -ENOIOCTLCMD;
}
return 0;
}
static void headphone_detect_handler(struct work_struct *work)
{
struct imx_3stack_priv *priv = &machine_priv;
struct platform_device *pdev = priv->pdev;
struct wm8350 *wm8350 = priv->wm8350;
sysfs_notify(&pdev->dev.kobj, NULL, "headphone");
wm8350_unmask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
}
static int wm8350_regulator_probe(struct platform_device *pdev)
{
struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
struct regulator_dev *rdev;
int ret;
u16 val;
if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B)
return -ENODEV;
/* do any regulatior specific init */
switch (pdev->id) {
case WM8350_DCDC_1:
val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
break;
case WM8350_DCDC_3:
val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
break;
case WM8350_DCDC_4:
val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
break;
case WM8350_DCDC_6:
val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
break;
}
/* register regulator */
rdev = regulator_register(&wm8350_reg[pdev->id], &pdev->dev,
pdev->dev.platform_data,
dev_get_drvdata(&pdev->dev));
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s\n",
wm8350_reg[pdev->id].name);
return PTR_ERR(rdev);
}
/* register regulator IRQ */
ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq,
pmic_uv_handler, rdev);
if (ret < 0) {
regulator_unregister(rdev);
dev_err(&pdev->dev, "failed to register regulator %s IRQ\n",
wm8350_reg[pdev->id].name);
return ret;
}
wm8350_unmask_irq(wm8350, wm8350_reg[pdev->id].irq);
return 0;
}
static int config_gpios(struct wm8350 *wm8350)
{
/* power on */
wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_ON);
/* Sw3 --> PWR_OFF_GPIO3 */
/* lg - TODO: GPIO1_0 to be pulled down */
wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_ON);
/* MR or MEMRST ????? */
wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
/* Hibernate -- GPIO 7 */
wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
/* SDOUT */
wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
/* GPIO switch SW2 */
wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN, WM8350_GPIO7_GPIO_IN,
WM8350_GPIO_ACTIVE_HIGH, WM8350_GPIO_PULL_DOWN,
WM8350_GPIO_INVERT_OFF, WM8350_GPIO_DEBOUNCE_ON);
wm8350_register_irq(wm8350, WM8350_IRQ_GPIO(7),
imx37_3stack_switch_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_GPIO(7));
/* PWR_FAIL */
wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
/* BATT Fault */
wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
return 0;
}
static int __devinit imx_3stack_wm8350_probe(struct platform_device *pdev)
{
struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
struct imx_3stack_priv *priv = &machine_priv;
struct wm8350 *wm8350 = plat->priv;
struct snd_soc_dai *wm8350_cpu_dai;
int ret = 0;
u16 reg;
priv->pdev = pdev;
priv->wm8350 = wm8350;
gpio_activate_audio_ports();
imx_3stack_init_dam(plat->src_port, plat->ext_port);
if (plat->src_port == 2)
wm8350_cpu_dai = imx_ssi_dai[2];
else
wm8350_cpu_dai = imx_ssi_dai[0];
imx_3stack_dai.cpu_dai = wm8350_cpu_dai;
ret = driver_create_file(pdev->dev.driver, &driver_attr_headphone);
if (ret < 0) {
pr_err("%s:failed to create driver_attr_headphone\n", __func__);
return ret;
}
/* enable slow clock gen for jack detect */
reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_4);
wm8350_reg_write(wm8350, WM8350_POWER_MGMT_4, reg | WM8350_TOCLK_ENA);
/* enable jack detect */
reg = wm8350_reg_read(wm8350, WM8350_JACK_DETECT);
wm8350_reg_write(wm8350, WM8350_JACK_DETECT, reg | WM8350_JDR_ENA);
wm8350_register_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R,
imx_3stack_jack_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
wm8350_jack_func = 1;
wm8350_spk_func = 1;
return 0;
}
static int wm8350_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct wm8350 *wm8350 = dev_get_drvdata(dev);
/* Suppress duplicate changes since genirq nests enable and
* disable calls. */
if (enabled == wm8350->rtc.update_enabled)
return 0;
if (enabled)
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_SEC);
else
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
wm8350->rtc.update_enabled = enabled;
return 0;
}
/**
* wm8350_hp_jack_detect - Enable headphone jack detection.
*
* @codec: WM8350 codec
* @which: left or right jack detect signal
* @jack: jack to report detection events on
* @report: value to report
*
* Enables the headphone jack detection of the WM8350.
*/
int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
struct snd_soc_jack *jack, int report)
{
struct wm8350_data *priv = codec->private_data;
struct wm8350 *wm8350 = codec->control_data;
int irq;
int ena;
switch (which) {
case WM8350_JDL:
priv->hpl.jack = jack;
priv->hpl.report = report;
irq = WM8350_IRQ_CODEC_JCK_DET_L;
ena = WM8350_JDL_ENA;
break;
case WM8350_JDR:
priv->hpr.jack = jack;
priv->hpr.report = report;
irq = WM8350_IRQ_CODEC_JCK_DET_R;
ena = WM8350_JDR_ENA;
break;
default:
return -EINVAL;
}
wm8350_set_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
wm8350_set_bits(wm8350, WM8350_JACK_DETECT, ena);
/* Sync status */
wm8350_hp_jack_handler(wm8350, irq, priv);
wm8350_unmask_irq(wm8350, irq);
return 0;
}
/*
* Handle commands from user-space
*/
static int wm8350_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
struct wm8350 *wm8350 = dev_get_drvdata(dev);
switch (cmd) {
case RTC_AIE_OFF:
return wm8350_rtc_stop_alarm(wm8350);
case RTC_AIE_ON:
return wm8350_rtc_start_alarm(wm8350);
case RTC_UIE_OFF:
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
break;
case RTC_UIE_ON:
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_SEC);
break;
default:
return -ENOIOCTLCMD;
}
return 0;
}
//static int wm8350_init(struct wm8350 *wm8350)
int wm8350_dev_init(struct wm8350 *wm8350)
{
int i, ret;
u16 data;
#if 0
/* dont assert RTS when hibernating */
wm8350_set_bits(wm8350, WM8350_SYSTEM_HIBERNATE, WM8350_RST_HIB_MODE);
#endif
wm8350_reg_unlock(wm8350);
wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1, WM8350_IRQ_POL);
wm8350_reg_lock(wm8350);
s3c2410_gpio_pullup(S3C2410_GPF1, 0);
s3c2410_gpio_cfgpin(S3C2410_GPF1, S3C2410_GPF1_EINT1);
// set_irq_type(IRQ_EINT1, IRQT_BOTHEDGE);
s3c2410_gpio_pullup(S3C2410_GPF2, 0);
s3c2410_gpio_cfgpin(S3C2410_GPF2, S3C2410_GPF2_EINT2);
/* Shutdown threshold value 3.1v off , 3.2v on */
wm8350_reg_unlock(wm8350);
data = wm8350_reg_read(wm8350, WM8350_POWER_CHECK_COMPARATOR)
& ~(WM8350_PCCMP_OFF_THR_MASK | WM8350_PCCMP_ON_THR_MASK);
wm8350_reg_write(wm8350, WM8350_POWER_CHECK_COMPARATOR, data | 0x23);
wm8350_reg_lock(wm8350);
data = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_2);
wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_2, data | WM8350_AUXADC_CAL);
config_s3c_wm8350_gpio(wm8350);
#if 0
/* Sw1 --> PWR_ON */
wm8350_register_irq(wm8350, WM8350_IRQ_WKUP_ONKEY,
imx32ads_switch_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_WKUP_ONKEY);
#endif
#ifndef CONFIG_MACH_CANOPUS
for (i = 0; i < ARRAY_SIZE(wm8350_regulator_devices); i++) {
platform_set_drvdata(&wm8350_regulator_devices[i], wm8350);
ret = platform_device_register(&wm8350_regulator_devices[i]);
if (ret < 0)
goto unwind;
}
#else // CONFIG_MACH_CANOPUS
struct regulator_init_data *reg_data = NULL;
for (i = 0; i < ARRAY_SIZE(wm8350_regulator_devices); i++) {
if (wm8350_regulator_devices[i].id == WM8350_DCDC_4) {
// for LCD
if (q_hw_ver(7800_ES2)
|| q_hw_ver(7800_TP)
|| q_hw_ver(7800_MP)) {
reg_data = (struct regulator_init_data *)wm8350_regulator_devices[i].dev.platform_data;
reg_data->constraints.min_uV = 3400000;
reg_data->constraints.max_uV = 3400000;
reg_data->constraints.state_mem.uV = 3400000;
}
} else if (wm8350_regulator_devices[i].id == WM8350_LDO_3) {
// for PMIC LDO
if (q_hw_ver(SWP2000)
|| q_hw_ver(7800_MP2)
|| q_hw_ver(KTQOOK_TP2)
|| q_hw_ver(KTQOOK_MP)
|| q_hw_ver(SKATM)) {
reg_data = (struct regulator_init_data *)wm8350_regulator_devices[i].dev.platform_data;
reg_data->constraints.min_uV = 1200000;
reg_data->constraints.max_uV = 1200000;
reg_data->num_consumer_supplies = ARRAY_SIZE(ldo4_consumers);
reg_data->consumer_supplies = ldo4_consumers;
}
} else if (wm8350_regulator_devices[i].id == WM8350_LDO_4) {
// for PMIC LDO
if (q_hw_ver(SWP2000)
|| q_hw_ver(7800_MP2)
|| q_hw_ver(KTQOOK_TP2)
|| q_hw_ver(KTQOOK_MP)
|| q_hw_ver(SKATM)) {
reg_data = (struct regulator_init_data *)wm8350_regulator_devices[i].dev.platform_data;
reg_data->constraints.min_uV = 3300000;
reg_data->constraints.max_uV = 3300000;
reg_data->num_consumer_supplies = ARRAY_SIZE(ldo3_consumers);
reg_data->consumer_supplies = ldo3_consumers;
}
}
platform_set_drvdata(&wm8350_regulator_devices[i], wm8350);
ret = platform_device_register(&wm8350_regulator_devices[i]);
if (ret < 0)
goto unwind;
}
#endif // CONFIG_MACH_CANOPUS
/* now register other clients */
return s3c_wm8350_device_register(wm8350);
unwind:
for (i--; i >= 0; i--)
platform_device_unregister(&wm8350_regulator_devices[i]);
return ret;
}
static void wm8350_init_charger(struct wm8350 *wm8350)
{
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_TO,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_TO);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_END,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_END);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_START,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_START);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1);
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85);
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_USB_FB,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_USB_FB);
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_WALL_FB,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_WALL_FB);
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_BAT_FB,
wm8350_charger_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_BAT_FB);
}
int wm8350_init(struct wm8350 *wm8350)
{
int ret = 0;
/* register regulator and set constraints */
wm8350_device_register_pmic(wm8350);
set_regulator_constraints(wm8350);
#ifdef NOT_PORTED_TO_IMX37
wm8350_device_register_rtc(wm8350);
wm8350_device_register_wdg(wm8350);
wm8350_device_register_power(wm8350);
#endif
mxc_init_wm8350();
/*Note: Needs to be moved into a regulator function. */
/* Configuring -- GPIO 7 pin */
if (wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_OUT, 0,
WM8350_GPIO_ACTIVE_LOW, WM8350_GPIO_PULL_NONE,
WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF) == 0)
wm8350_gpio_set_status(wm8350, 7, 1);
else
printk(KERN_ERR "Error in setting Wolfson GPIO pin 7 \n");
/* enable gpio4:USB_VBUS_EN */
ret =
wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
if (ret)
printk(KERN_ERR "Error in setting USB VBUS enable pin\n");
/*PMIC RDY*/
if (wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT, WM8350_GPIO9_GPIO_OUT,
WM8350_GPIO_ACTIVE_LOW, WM8350_GPIO_PULL_NONE,
WM8350_GPIO_INVERT_OFF, WM8350_GPIO_DEBOUNCE_OFF) == 0)
wm8350_gpio_set_status(wm8350, 9, 1);
else
printk(KERN_ERR "Error in setting Wolfson GPIO pin 9 \n");
/* register sound */
printk("Registering imx37_snd_device");
imx_snd_device = platform_device_alloc("wm8350-imx-3stack-audio", -1);
if (!imx_snd_device) {
ret = -ENOMEM;
goto err;
}
imx_snd_device->dev.platform_data = &imx_3stack_audio_platform_data;
platform_set_drvdata(imx_snd_device, &wm8350->audio);
ret = platform_device_add(imx_snd_device);
if (ret)
goto snd_err;
/* set up PMIC IRQ (active high) to i.MX32ADS */
printk("Registering PMIC INT");
INIT_WORK(&wm8350->work, wm8350_irq_work);
wm8350_reg_unlock(wm8350);
wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1, WM8350_IRQ_POL);
wm8350_reg_lock(wm8350);
set_irq_type(MXC_PMIC_INT_LINE, IRQT_RISING);
ret = request_irq(MXC_PMIC_INT_LINE, wm8350_irq_handler,
IRQF_DISABLED, "wm8350-pmic", wm8350);
if (ret != 0) {
printk(KERN_ERR "wm8350: cant request irq %d\n",
MXC_PMIC_INT_LINE);
goto err;
}
wm8350->nirq = MXC_PMIC_INT_LINE;
set_irq_wake(MXC_PMIC_INT_LINE, 1);
#ifdef NOT_PORTED_TO_IMX37
printk("Configuring WM8350 GPIOS");
config_gpios(wm8350);
config_hibernate(wm8350);
#endif
/* Sw1 --> PWR_ON */
printk("Registering and unmasking the WM8350 wakeup key\n");
wm8350_register_irq(wm8350, WM8350_IRQ_WKUP_ONKEY,
imx37_3stack_switch_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_WKUP_ONKEY);
/* unmask all & clear sticky */
printk("Unmasking WM8350 local interrupts\n");
wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0x3ffe);
schedule_work(&wm8350->work);
#if BATTERY
/* not much use without a battery atm */
wm8350_init_battery(wm8350);
#endif
printk("Exiting normally from wm8350_init()");
return ret;
snd_err:
platform_device_put(imx_snd_device);
err:
printk("wm8350_init() FAILED");
kfree(wm8350->reg_cache);
return ret;
}
static int wm8350_rtc_probe(struct platform_device *pdev)
{
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
struct wm8350_rtc *wm_rtc = &wm8350->rtc;
int ret = 0;
u16 timectl, power5;
timectl = wm8350_reg_read(wm8350, WM8350_RTC_TIME_CONTROL);
if (timectl & WM8350_RTC_BCD) {
dev_err(&pdev->dev, "RTC BCD mode not supported\n");
return -EINVAL;
}
if (timectl & WM8350_RTC_12HR) {
dev_err(&pdev->dev, "RTC 12 hour mode not supported\n");
return -EINVAL;
}
/* enable the RTC if it's not already enabled */
power5 = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5);
if (!(power5 & WM8350_RTC_TICK_ENA)) {
dev_info(wm8350->dev, "Starting RTC\n");
wm8350_reg_unlock(wm8350);
ret = wm8350_set_bits(wm8350, WM8350_POWER_MGMT_5,
WM8350_RTC_TICK_ENA);
if (ret < 0) {
dev_err(&pdev->dev, "failed to enable RTC: %d\n", ret);
return ret;
}
wm8350_reg_lock(wm8350);
}
if (timectl & WM8350_RTC_STS) {
int retries;
ret = wm8350_clear_bits(wm8350, WM8350_RTC_TIME_CONTROL,
WM8350_RTC_SET);
if (ret < 0) {
dev_err(&pdev->dev, "failed to start: %d\n", ret);
return ret;
}
retries = WM8350_SET_TIME_RETRIES;
do {
timectl = wm8350_reg_read(wm8350,
WM8350_RTC_TIME_CONTROL);
} while (timectl & WM8350_RTC_STS && retries--);
if (retries == 0) {
dev_err(&pdev->dev, "failed to start: timeout\n");
return -ENODEV;
}
}
device_init_wakeup(&pdev->dev, 1);
wm_rtc->rtc = rtc_device_register("wm8350", &pdev->dev,
&wm8350_rtc_ops, THIS_MODULE);
if (IS_ERR(wm_rtc->rtc)) {
ret = PTR_ERR(wm_rtc->rtc);
dev_err(&pdev->dev, "failed to register RTC: %d\n", ret);
return ret;
}
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_PER);
wm8350_register_irq(wm8350, WM8350_IRQ_RTC_SEC,
wm8350_rtc_update_handler, NULL);
wm8350_register_irq(wm8350, WM8350_IRQ_RTC_ALM,
wm8350_rtc_alarm_handler, NULL);
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_ALM);
return 0;
}