regulator: tps65910: wire up sleep control configuration

This enables configuring the PMIC's sleep mode via device-tree.

A pointer indirection to sleep mode data is removed, as it simplifies
the implementation slightly. In current kernel tree, platform data
structure is not used outside MFD cell drivers.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/mfd/tps65910.txt

@@ -61,6 +61,10 @@ Optional properties:
   There should be 9 entries here, one for each gpio.
 - ti,system-power-controller: Telling whether or not this pmic is controlling
   the system power.
+- ti,sleep-enable: Enable SLEEP state.
+- ti,sleep-keep-therm: Keep thermal monitoring on in sleep state.
+- ti,sleep-keep-ck32k: Keep the 32KHz clock output on in sleep state.
+- ti,sleep-keep-hsclk: Keep high speed internal clock on in sleep state.
 
 Regulator Optional properties:
 - ti,regulator-ext-sleep-control: enable external sleep

drivers/mfd/tps65910.c

@@ -328,11 +328,7 @@ static int tps65910_sleepinit(struct tps65910 *tps65910,
 		goto err_sleep_init;
 	}
 
-	/* Return if there is no sleep keepon data. */
-	if (!pmic_pdata->slp_keepon)
-		return 0;
-
-	if (pmic_pdata->slp_keepon->therm_keepon) {
+	if (pmic_pdata->slp_keepon.therm_keepon) {
 		ret = tps65910_reg_set_bits(tps65910,
 				TPS65910_SLEEP_KEEP_RES_ON,
 				SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
@@ -342,7 +338,7 @@ static int tps65910_sleepinit(struct tps65910 *tps65910,
 		}
 	}
 
-	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
+	if (pmic_pdata->slp_keepon.clkout32k_keepon) {
 		ret = tps65910_reg_set_bits(tps65910,
 				TPS65910_SLEEP_KEEP_RES_ON,
 				SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
@@ -352,7 +348,7 @@ static int tps65910_sleepinit(struct tps65910 *tps65910,
 		}
 	}
 
-	if (pmic_pdata->slp_keepon->i2chs_keepon) {
+	if (pmic_pdata->slp_keepon.i2chs_keepon) {
 		ret = tps65910_reg_set_bits(tps65910,
 				TPS65910_SLEEP_KEEP_RES_ON,
 				SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
@@ -415,6 +411,18 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
 	prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
 	board_info->en_ck32k_xtal = prop;
 
+	prop = of_property_read_bool(np, "ti,sleep-enable");
+	board_info->en_dev_slp = prop;
+
+	prop = of_property_read_bool(np, "ti,sleep-keep-therm");
+	board_info->slp_keepon.therm_keepon = prop;
+
+	prop = of_property_read_bool(np, "ti,sleep-keep-ck32k");
+	board_info->slp_keepon.clkout32k_keepon = prop;
+
+	prop = of_property_read_bool(np, "ti,sleep-keep-hsclk");
+	board_info->slp_keepon.i2chs_keepon = prop;
+
 	board_info->irq = client->irq;
 	board_info->irq_base = -1;
 	board_info->pm_off = of_property_read_bool(np,

include/linux/mfd/tps65910.h

@@ -879,7 +879,7 @@ struct tps65910_board {
 	bool en_ck32k_xtal;
 	bool en_dev_slp;
 	bool pm_off;
-	struct tps65910_sleep_keepon_data *slp_keepon;
+	struct tps65910_sleep_keepon_data slp_keepon;
 	bool en_gpio_sleep[TPS6591X_MAX_NUM_GPIO];
 	unsigned long regulator_ext_sleep_control[TPS65910_NUM_REGS];
 	struct regulator_init_data *tps65910_pmic_init_data[TPS65910_NUM_REGS];