Merge branch 'for-mfd-and-power' of git://git.linaro.org/people/ljone…

…s/linux-3.0-ux500

From Lee Jones <lee.jones@linaro.org>:

"Please find the next instalment of the AB8500 Power drivers upgrade. A lot of
work has taken place on the internal development track, but little effort has
gone into mainlining it. There is a large backlog of patches which are in need
of forward-porting, then upstreaming. This patch-set aims to make a large dent
into them."

Conflicts:
	drivers/mfd/ab8500-gpadc.c

drivers/mfd/ab8500-sysctrl.c

@@ -15,19 +15,30 @@
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/mfd/abx500/ab8500-sysctrl.h>
 
+/* RtcCtrl bits */
+#define AB8500_ALARM_MIN_LOW  0x08
+#define AB8500_ALARM_MIN_MID 0x09
+#define RTC_CTRL 0x0B
+#define RTC_ALARM_ENABLE 0x4
+
 static struct device *sysctrl_dev;
 
 void ab8500_power_off(void)
 {
 	sigset_t old;
 	sigset_t all;
-	static char *pss[] = {"ab8500_ac", "ab8500_usb"};
+	static char *pss[] = {"ab8500_ac", "pm2301", "ab8500_usb"};
 	int i;
 	bool charger_present = false;
 	union power_supply_propval val;
 	struct power_supply *psy;
 	int ret;
 
+	if (sysctrl_dev == NULL) {
+		pr_err("%s: sysctrl not initialized\n", __func__);
+		return;
+	}
+
 	/*
 	 * If we have a charger connected and we're powering off,
 	 * reboot into charge-only mode.
@@ -74,6 +85,63 @@ void ab8500_power_off(void)
 	}
 }
 
+/*
+ * Use the AB WD to reset the platform. It will perform a hard
+ * reset instead of a soft reset. Write the reset reason to
+ * the AB before reset, which can be read upon restart.
+ */
+void ab8500_restart(char mode, const char *cmd)
+{
+	struct ab8500_platform_data *plat;
+	struct ab8500_sysctrl_platform_data *pdata;
+	u16 reason = 0;
+	u8 val;
+
+	if (sysctrl_dev == NULL) {
+		pr_err("%s: sysctrl not initialized\n", __func__);
+		return;
+	}
+
+	plat = dev_get_platdata(sysctrl_dev->parent);
+	pdata = plat->sysctrl;
+	if (pdata->reboot_reason_code)
+		reason = pdata->reboot_reason_code(cmd);
+	else
+		pr_warn("[%s] No reboot reason set. Default reason %d\n",
+			__func__, reason);
+
+	/*
+	 * Disable RTC alarm, just a precaution so that no alarm
+	 * is running when WD reset is executed.
+	 */
+	abx500_get_register_interruptible(sysctrl_dev, AB8500_RTC,
+		RTC_CTRL , &val);
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		RTC_CTRL , (val & ~RTC_ALARM_ENABLE));
+
+	/*
+	 * Android is not using the RTC alarm registers during reboot
+	 * so we borrow them for writing the reason of reset
+	 */
+
+	/* reason[8 LSB] */
+	val = reason & 0xFF;
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		AB8500_ALARM_MIN_LOW , val);
+
+	/* reason[8 MSB] */
+	val = (reason>>8) & 0xFF;
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		AB8500_ALARM_MIN_MID , val);
+
+	/* Setting WD timeout to 0 */
+	ab8500_sysctrl_write(AB8500_MAINWDOGTIMER, 0xFF, 0x0);
+
+	/* Setting the parameters to AB8500 WD*/
+	ab8500_sysctrl_write(AB8500_MAINWDOGCTRL, 0xFF, (AB8500_ENABLE_WD |
+		AB8500_WD_RESTART_ON_EXPIRE | AB8500_KICK_WD));
+}
+
 static inline bool valid_bank(u8 bank)
 {
 	return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
@@ -85,7 +153,7 @@ int ab8500_sysctrl_read(u16 reg, u8 *value)
 	u8 bank;
 
 	if (sysctrl_dev == NULL)
-		return -EAGAIN;
+		return -EINVAL;
 
 	bank = (reg >> 8);
 	if (!valid_bank(bank))
@@ -101,7 +169,7 @@ int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
 	u8 bank;
 
 	if (sysctrl_dev == NULL)
-		return -EAGAIN;
+		return -EINVAL;
 
 	bank = (reg >> 8);
 	if (!valid_bank(bank))
@@ -114,28 +182,36 @@ EXPORT_SYMBOL(ab8500_sysctrl_write);
 
 static int ab8500_sysctrl_probe(struct platform_device *pdev)
 {
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
 	struct ab8500_platform_data *plat;
 	struct ab8500_sysctrl_platform_data *pdata;
 
-	sysctrl_dev = &pdev->dev;
 	plat = dev_get_platdata(pdev->dev.parent);
+
+	if (!(plat && plat->sysctrl))
+		return -EINVAL;
+
 	if (plat->pm_power_off)
 		pm_power_off = ab8500_power_off;
 
 	pdata = plat->sysctrl;
 
 	if (pdata) {
-		int ret, i, j;
+		int last, ret, i, j;
+
+		if (is_ab8505(ab8500))
+			last = AB8500_SYSCLKREQ4RFCLKBUF;
+		else
+			last = AB8500_SYSCLKREQ8RFCLKBUF;
 
-		for (i = AB8500_SYSCLKREQ1RFCLKBUF;
-		     i <= AB8500_SYSCLKREQ8RFCLKBUF; i++) {
+		for (i = AB8500_SYSCLKREQ1RFCLKBUF; i <= last; i++) {
 			j = i - AB8500_SYSCLKREQ1RFCLKBUF;
 			ret = ab8500_sysctrl_write(i, 0xff,
-						   pdata->initial_req_buf_config[j]);
+					pdata->initial_req_buf_config[j]);
 			dev_dbg(&pdev->dev,
-				"Setting SysClkReq%dRfClkBuf 0x%X\n",
-				j + 1,
-				pdata->initial_req_buf_config[j]);
+					"Setting SysClkReq%dRfClkBuf 0x%X\n",
+					j + 1,
+					pdata->initial_req_buf_config[j]);
 			if (ret < 0) {
 				dev_err(&pdev->dev,
 					"unable to set sysClkReq%dRfClkBuf: "

drivers/power/Kconfig

@@ -353,13 +353,6 @@ config BATTERY_GOLDFISH
 	  Say Y to enable support for the battery and AC power in the
 	  Goldfish emulator.
 
-config CHARGER_PM2301
-	bool "PM2301 Battery Charger Driver"
-	depends on AB8500_BM
-	help
-	  Say Y to include support for PM2301 charger driver.
-	  Depends on AB8500 battery management core.
-
 source "drivers/power/reset/Kconfig"
 
 endif # POWER_SUPPLY

drivers/power/Makefile

@@ -39,15 +39,14 @@ obj-$(CONFIG_CHARGER_PCF50633)	+= pcf50633-charger.o
 obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-battery.o
 obj-$(CONFIG_BATTERY_INTEL_MID)	+= intel_mid_battery.o
 obj-$(CONFIG_BATTERY_RX51)	+= rx51_battery.o
-obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o
+obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o pm2301_charger.o
 obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o
 obj-$(CONFIG_CHARGER_MAX8903)	+= max8903_charger.o
 obj-$(CONFIG_CHARGER_TWL4030)	+= twl4030_charger.o
 obj-$(CONFIG_CHARGER_LP8727)	+= lp8727_charger.o
 obj-$(CONFIG_CHARGER_LP8788)	+= lp8788-charger.o
 obj-$(CONFIG_CHARGER_GPIO)	+= gpio-charger.o
 obj-$(CONFIG_CHARGER_MANAGER)	+= charger-manager.o
-obj-$(CONFIG_CHARGER_PM2301)	+= pm2301_charger.o
 obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
 obj-$(CONFIG_CHARGER_BQ2415X)	+= bq2415x_charger.o

drivers/power/ab8500_bmdata.c

@@ -407,22 +407,74 @@ static const struct abx500_fg_parameters fg = {
 	.battok_raising_th_sel1 = 2860,
 	.maint_thres = 95,
 	.user_cap_limit = 15,
+	.pcut_enable = 1,
+	.pcut_max_time = 127,
+	.pcut_flag_time = 112,
+	.pcut_max_restart = 15,
+	.pcut_debounce_time = 2,
 };
 
-static const struct abx500_maxim_parameters maxi_params = {
+static const struct abx500_maxim_parameters ab8500_maxi_params = {
 	.ena_maxi = true,
 	.chg_curr = 910,
 	.wait_cycles = 10,
 	.charger_curr_step = 100,
 };
 
+static const struct abx500_maxim_parameters abx540_maxi_params = {
+        .ena_maxi = true,
+        .chg_curr = 3000,
+        .wait_cycles = 10,
+        .charger_curr_step = 200,
+};
+
 static const struct abx500_bm_charger_parameters chg = {
 	.usb_volt_max		= 5500,
 	.usb_curr_max		= 1500,
 	.ac_volt_max		= 7500,
 	.ac_curr_max		= 1500,
 };
 
+/*
+ * This array maps the raw hex value to charger output current used by the
+ * AB8500 values
+ */
+static int ab8500_charge_output_curr_map[] = {
+        100,    200,    300,    400,    500,    600,    700,    800,
+        900,    1000,   1100,   1200,   1300,   1400,   1500,   1500,
+};
+
+static int ab8540_charge_output_curr_map[] = {
+        0,      0,      0,      75,     100,    125,    150,    175,
+        200,    225,    250,    275,    300,    325,    350,    375,
+        400,    425,    450,    475,    500,    525,    550,    575,
+        600,    625,    650,    675,    700,    725,    750,    775,
+        800,    825,    850,    875,    900,    925,    950,    975,
+        1000,   1025,   1050,   1075,   1100,   1125,   1150,   1175,
+        1200,   1225,   1250,   1275,   1300,   1325,   1350,   1375,
+        1400,   1425,   1450,   1500,   1600,   1700,   1900,   2000,
+};
+
+/*
+ * This array maps the raw hex value to charger input current used by the
+ * AB8500 values
+ */
+static int ab8500_charge_input_curr_map[] = {
+        50,     98,     193,    290,    380,    450,    500,    600,
+        700,    800,    900,    1000,   1100,   1300,   1400,   1500,
+};
+
+static int ab8540_charge_input_curr_map[] = {
+        25,     50,     75,     100,    125,    150,    175,    200,
+        225,    250,    275,    300,    325,    350,    375,    400,
+        425,    450,    475,    500,    525,    550,    575,    600,
+        625,    650,    675,    700,    725,    750,    775,    800,
+        825,    850,    875,    900,    925,    950,    975,    1000,
+        1025,   1050,   1075,   1100,   1125,   1150,   1175,   1200,
+        1225,   1250,   1275,   1300,   1325,   1350,   1375,   1400,
+        1425,   1450,   1475,   1500,   1500,   1500,   1500,   1500,
+};
+
 struct abx500_bm_data ab8500_bm_data = {
 	.temp_under             = 3,
 	.temp_low               = 8,
@@ -442,15 +494,53 @@ struct abx500_bm_data ab8500_bm_data = {
 	.fg_res                 = 100,
 	.cap_levels             = &cap_levels,
 	.bat_type               = bat_type_thermistor,
-	.n_btypes               = 3,
+	.n_btypes               = ARRAY_SIZE(bat_type_thermistor),
 	.batt_id                = 0,
 	.interval_charging      = 5,
 	.interval_not_charging  = 120,
 	.temp_hysteresis        = 3,
 	.gnd_lift_resistance    = 34,
-	.maxi                   = &maxi_params,
+	.chg_output_curr        = ab8500_charge_output_curr_map,
+	.n_chg_out_curr         = ARRAY_SIZE(ab8500_charge_output_curr_map),
+	.maxi                   = &ab8500_maxi_params,
 	.chg_params             = &chg,
 	.fg_params              = &fg,
+        .chg_input_curr         = ab8500_charge_input_curr_map,
+        .n_chg_in_curr          = ARRAY_SIZE(ab8500_charge_input_curr_map),
+};
+
+struct abx500_bm_data ab8540_bm_data = {
+        .temp_under             = 3,
+        .temp_low               = 8,
+        .temp_high              = 43,
+        .temp_over              = 48,
+        .main_safety_tmr_h      = 4,
+        .temp_interval_chg      = 20,
+        .temp_interval_nochg    = 120,
+        .usb_safety_tmr_h       = 4,
+        .bkup_bat_v             = BUP_VCH_SEL_2P6V,
+        .bkup_bat_i             = BUP_ICH_SEL_150UA,
+        .no_maintenance         = false,
+        .capacity_scaling       = false,
+        .adc_therm              = ABx500_ADC_THERM_BATCTRL,
+        .chg_unknown_bat        = false,
+        .enable_overshoot       = false,
+        .fg_res                 = 100,
+        .cap_levels             = &cap_levels,
+        .bat_type               = bat_type_thermistor,
+        .n_btypes               = ARRAY_SIZE(bat_type_thermistor),
+        .batt_id                = 0,
+        .interval_charging      = 5,
+        .interval_not_charging  = 120,
+        .temp_hysteresis        = 3,
+        .gnd_lift_resistance    = 0,
+        .maxi                   = &abx540_maxi_params,
+        .chg_params             = &chg,
+        .fg_params              = &fg,
+        .chg_output_curr        = ab8540_charge_output_curr_map,
+        .n_chg_out_curr         = ARRAY_SIZE(ab8540_charge_output_curr_map),
+        .chg_input_curr         = ab8540_charge_input_curr_map,
+        .n_chg_in_curr          = ARRAY_SIZE(ab8540_charge_input_curr_map),
 };
 
 int ab8500_bm_of_probe(struct device *dev,