#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+/* Maximum value possible for VSEL */
+#define WM8350_DCDC_MAX_VSEL 0x66
+
/* Microamps */
static const int isink_cur[] = {
4,
return -EINVAL;
}
+static int wm8350_isink_enable_time(struct regulator_dev *rdev)
+{
+ struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
+ int isink = rdev_get_id(rdev);
+ int reg;
+
+ switch (isink) {
+ case WM8350_ISINK_A:
+ reg = wm8350_reg_read(wm8350, WM8350_CSA_FLASH_CONTROL);
+ break;
+ case WM8350_ISINK_B:
+ reg = wm8350_reg_read(wm8350, WM8350_CSB_FLASH_CONTROL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (reg & WM8350_CS1_FLASH_MODE) {
+ switch (reg & WM8350_CS1_ON_RAMP_MASK) {
+ case 0:
+ return 0;
+ case 1:
+ return 1950;
+ case 2:
+ return 3910;
+ case 3:
+ return 7800;
+ }
+ } else {
+ switch (reg & WM8350_CS1_ON_RAMP_MASK) {
+ case 0:
+ return 0;
+ case 1:
+ return 250000;
+ case 2:
+ return 500000;
+ case 3:
+ return 1000000;
+ }
+ }
+
+ return -EINVAL;
+}
+
+
int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode,
u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp,
u16 drive)
return wm8350_dcdc_val_to_mvolts(val) * 1000;
}
+static int wm8350_dcdc_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > WM8350_DCDC_MAX_VSEL)
+ return -EINVAL;
+ return wm8350_dcdc_val_to_mvolts(selector) * 1000;
+}
+
static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV)
{
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
return wm8350_ldo_val_to_mvolts(val) * 1000;
}
+static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > WM8350_LDO1_VSEL_MASK)
+ return -EINVAL;
+ return wm8350_ldo_val_to_mvolts(selector) * 1000;
+}
+
int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start,
u16 stop, u16 fault)
{
int dcdc = rdev_get_id(rdev);
u16 mask, sleep, active, force;
int mode = REGULATOR_MODE_NORMAL;
+ int reg;
- if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
- return -EINVAL;
-
- if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
+ switch (dcdc) {
+ case WM8350_DCDC_1:
+ reg = WM8350_DCDC1_FORCE_PWM;
+ break;
+ case WM8350_DCDC_3:
+ reg = WM8350_DCDC3_FORCE_PWM;
+ break;
+ case WM8350_DCDC_4:
+ reg = WM8350_DCDC4_FORCE_PWM;
+ break;
+ case WM8350_DCDC_6:
+ reg = WM8350_DCDC6_FORCE_PWM;
+ break;
+ default:
return -EINVAL;
+ }
mask = 1 << (dcdc - WM8350_DCDC_1);
active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask;
+ force = wm8350_reg_read(wm8350, reg) & WM8350_DCDC1_FORCE_PWM_ENA;
sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask;
- force = wm8350_reg_read(wm8350, WM8350_DCDC1_FORCE_PWM)
- & WM8350_DCDC1_FORCE_PWM_ENA;
+
dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x",
mask, active, sleep, force);
static struct regulator_ops wm8350_dcdc_ops = {
.set_voltage = wm8350_dcdc_set_voltage,
.get_voltage = wm8350_dcdc_get_voltage,
+ .list_voltage = wm8350_dcdc_list_voltage,
.enable = wm8350_dcdc_enable,
.disable = wm8350_dcdc_disable,
.get_mode = wm8350_dcdc_get_mode,
static struct regulator_ops wm8350_ldo_ops = {
.set_voltage = wm8350_ldo_set_voltage,
.get_voltage = wm8350_ldo_get_voltage,
+ .list_voltage = wm8350_ldo_list_voltage,
.enable = wm8350_ldo_enable,
.disable = wm8350_ldo_disable,
.is_enabled = wm8350_ldo_is_enabled,
.enable = wm8350_isink_enable,
.disable = wm8350_isink_disable,
.is_enabled = wm8350_isink_is_enabled,
+ .enable_time = wm8350_isink_enable_time,
};
static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC1,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC3,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC4,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_dcdc_ops,
.irq = WM8350_IRQ_UV_DC6,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO1,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO1_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO2,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO2_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO3,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO3_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
.ops = &wm8350_ldo_ops,
.irq = WM8350_IRQ_UV_LDO4,
.type = REGULATOR_VOLTAGE,
+ .n_voltages = WM8350_LDO4_VSEL_MASK + 1,
.owner = THIS_MODULE,
},
{
},
};
-static void pmic_uv_handler(struct wm8350 *wm8350, int irq, void *data)
+static irqreturn_t pmic_uv_handler(int irq, void *data)
{
struct regulator_dev *rdev = (struct regulator_dev *)data;
+ struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
+ mutex_lock(&rdev->mutex);
if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
regulator_notifier_call_chain(rdev,
REGULATOR_EVENT_REGULATION_OUT,
regulator_notifier_call_chain(rdev,
REGULATOR_EVENT_UNDER_VOLTAGE,
wm8350);
+ mutex_unlock(&rdev->mutex);
+
+ return IRQ_HANDLED;
}
static int wm8350_regulator_probe(struct platform_device *pdev)
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",
/* register regulator IRQ */
ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq,
- pmic_uv_handler, rdev);
+ pmic_uv_handler, 0, "UV", rdev);
if (ret < 0) {
regulator_unregister(rdev);
dev_err(&pdev->dev, "failed to register regulator %s IRQ\n",
return ret;
}
- wm8350_unmask_irq(wm8350, wm8350_reg[pdev->id].irq);
-
return 0;
}
struct regulator_dev *rdev = platform_get_drvdata(pdev);
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
- wm8350_mask_irq(wm8350, wm8350_reg[pdev->id].irq);
- wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq);
+ wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev);
regulator_unregister(rdev);
{
struct platform_device *pdev;
int ret;
+ if (reg < 0 || reg >= NUM_WM8350_REGULATORS)
+ return -EINVAL;
if (wm8350->pmic.pdev[reg])
return -EBUSY;
+ if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 &&
+ reg > wm8350->pmic.max_dcdc)
+ return -ENODEV;
+ if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B &&
+ reg > wm8350->pmic.max_isink)
+ return -ENODEV;
+
pdev = platform_device_alloc("wm8350-regulator", reg);
if (!pdev)
return -ENOMEM;
}
EXPORT_SYMBOL_GPL(wm8350_register_regulator);
+/**
+ * wm8350_register_led - Register a WM8350 LED output
+ *
+ * @param wm8350 The WM8350 device to configure.
+ * @param lednum LED device index to create.
+ * @param dcdc The DCDC to use for the LED.
+ * @param isink The ISINK to use for the LED.
+ * @param pdata Configuration for the LED.
+ *
+ * The WM8350 supports the use of an ISINK together with a DCDC to
+ * provide a power-efficient LED driver. This function registers the
+ * regulators and instantiates the platform device for a LED. The
+ * operating modes for the LED regulators must be configured using
+ * wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and
+ * wm8350_dcdc_set_slot() prior to calling this function.
+ */
+int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
+ struct wm8350_led_platform_data *pdata)
+{
+ struct wm8350_led *led;
+ struct platform_device *pdev;
+ int ret;
+
+ if (lednum >= ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) {
+ dev_err(wm8350->dev, "Invalid LED index %d\n", lednum);
+ return -ENODEV;
+ }
+
+ led = &wm8350->pmic.led[lednum];
+
+ if (led->pdev) {
+ dev_err(wm8350->dev, "LED %d already allocated\n", lednum);
+ return -EINVAL;
+ }
+
+ pdev = platform_device_alloc("wm8350-led", lednum);
+ if (pdev == NULL) {
+ dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum);
+ return -ENOMEM;
+ }
+
+ led->isink_consumer.dev = &pdev->dev;
+ led->isink_consumer.supply = "led_isink";
+ led->isink_init.num_consumer_supplies = 1;
+ led->isink_init.consumer_supplies = &led->isink_consumer;
+ led->isink_init.constraints.min_uA = 0;
+ led->isink_init.constraints.max_uA = pdata->max_uA;
+ led->isink_init.constraints.valid_ops_mask
+ = REGULATOR_CHANGE_CURRENT | REGULATOR_CHANGE_STATUS;
+ led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
+ ret = wm8350_register_regulator(wm8350, isink, &led->isink_init);
+ if (ret != 0) {
+ platform_device_put(pdev);
+ return ret;
+ }
+
+ led->dcdc_consumer.dev = &pdev->dev;
+ led->dcdc_consumer.supply = "led_vcc";
+ led->dcdc_init.num_consumer_supplies = 1;
+ led->dcdc_init.consumer_supplies = &led->dcdc_consumer;
+ led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
+ led->dcdc_init.constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS;
+ ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init);
+ if (ret != 0) {
+ platform_device_put(pdev);
+ return ret;
+ }
+
+ switch (isink) {
+ case WM8350_ISINK_A:
+ wm8350->pmic.isink_A_dcdc = dcdc;
+ break;
+ case WM8350_ISINK_B:
+ wm8350->pmic.isink_B_dcdc = dcdc;
+ break;
+ }
+
+ pdev->dev.platform_data = pdata;
+ pdev->dev.parent = wm8350->dev;
+ ret = platform_device_add(pdev);
+ if (ret != 0) {
+ dev_err(wm8350->dev, "Failed to register LED %d: %d\n",
+ lednum, ret);
+ platform_device_put(pdev);
+ return ret;
+ }
+
+ led->pdev = pdev;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wm8350_register_led);
+
static struct platform_driver wm8350_regulator_driver = {
.probe = wm8350_regulator_probe,
.remove = wm8350_regulator_remove,
MODULE_AUTHOR("Liam Girdwood");
MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm8350-regulator");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff