[PATCH v4] mfd: intel_soc_pmic_bxtwc: Add Intel BXT WhiskeyCove PMIC ADC thermal channel mapping and USB type-C resources

[Bin Gao <bin.gao@linux.intel.com>]

This patch adds the mapping of PMIC ADC channel to thermal zone and
USB type-C resources. This mapping is used in the pmic thermal driver
to notify the thermal zone with the pmic adc channel alert interrupts.
This patch also adds three new data structures to
include/linux/mfd/intel_soc_pmic.h: struct trip_config_map{},
struct thermal_irq_map {} and struct pmic_thermal_data {} which are
required by changes we did on intel_soc_pmic_bxtwc.c.

Signed-off-by: Yegnesh S Iyer <yegnesh.s.iyer@intel.com>
Signed-off-by: Rohit S Kenchanpura <rohit.s.kenchanpura@intel.com>
Signed-off-by: Bin Gao <bin.gao@intel.com>
---
Changes in v4:
 - Extended existing regmap reg instead of defining a new one:
   REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 5, 0x3f)
Changes in v3:
 - Added USB type-C resources.
Changes in v2:
 - Fixed subject line.
 - Combined two patches into one.
 drivers/mfd/intel_soc_pmic_bxtwc.c | 126 ++++++++++++++++++++++++++++++++++++-
 include/linux/mfd/intel_soc_pmic.h |  21 +++++++
 2 files changed, 146 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
index b942876..e69eb86 100644
--- a/drivers/mfd/intel_soc_pmic_bxtwc.c
+++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
@@ -47,6 +47,8 @@
 #define BXTWC_MIRQLVL1		0x4E0E
 #define BXTWC_MPWRTNIRQ		0x4E0F
 
+#define BXTWC_MIRQLVL1_MCHGR	BIT(5)
+
 #define BXTWC_MTHRM0IRQ		0x4E12
 #define BXTWC_MTHRM1IRQ		0x4E13
 #define BXTWC_MTHRM2IRQ		0x4E14
@@ -58,6 +60,10 @@
 #define BXTWC_MGPIO1IRQ		0x4E1A
 #define BXTWC_MCRITIRQ		0x4E1B
 
+#define BXTWC_STHRM0IRQ		0x4F19
+#define BXTWC_STHRM1IRQ		0x4F1A
+#define BXTWC_STHRM2IRQ		0x4F1B
+
 /* Whiskey Cove PMIC share same ACPI ID between different platforms */
 #define BROXTON_PMIC_WC_HRV	4
 
@@ -109,13 +115,116 @@ static const struct regmap_irq bxtwc_regmap_irqs_level2[] = {
 	REGMAP_IRQ_REG(BXTWC_THRM2_IRQ, 2, 0xff),
 	REGMAP_IRQ_REG(BXTWC_BCU_IRQ, 3, 0x1f),
 	REGMAP_IRQ_REG(BXTWC_ADC_IRQ, 4, 0xff),
-	REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 5, 0x1f),
+	REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 5, 0x3f),
 	REGMAP_IRQ_REG(BXTWC_CHGR1_IRQ, 6, 0x1f),
 	REGMAP_IRQ_REG(BXTWC_GPIO0_IRQ, 7, 0xff),
 	REGMAP_IRQ_REG(BXTWC_GPIO1_IRQ, 8, 0x3f),
 	REGMAP_IRQ_REG(BXTWC_CRIT_IRQ, 9, 0x03),
 };
 
+static struct trip_config_map str0_trip_config[] = {
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x01,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x01,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x01,
+		.trip_num = 0
+	},
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x10,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x10,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x10,
+		.trip_num = 1
+	}
+};
+
+static struct trip_config_map str1_trip_config[] = {
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x02,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x02,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x02,
+		.trip_num = 0
+	},
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x20,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x20,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x20,
+		.trip_num = 1
+	},
+};
+
+static struct trip_config_map str2_trip_config[] = {
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x04,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x04,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x04,
+		.trip_num = 0
+	},
+	{
+		.irq_reg = BXTWC_THRM0IRQ,
+		.irq_mask = 0x40,
+		.irq_en = BXTWC_MTHRM0IRQ,
+		.irq_en_mask = 0x40,
+		.evt_stat = BXTWC_STHRM0IRQ,
+		.evt_mask = 0x40,
+		.trip_num = 1
+	},
+};
+
+static struct trip_config_map str3_trip_config[] = {
+	{
+		.irq_reg = BXTWC_THRM2IRQ,
+		.irq_mask = 0x10,
+		.irq_en = BXTWC_MTHRM2IRQ,
+		.irq_en_mask = 0x10,
+		.evt_stat = BXTWC_STHRM2IRQ,
+		.evt_mask = 0x10,
+		.trip_num = 0
+	},
+};
+
+static struct thermal_irq_map bxtwc_thermal_irq_map[] = {
+	{
+		.handle = "STR0",
+		.trip_config = str0_trip_config,
+		.num_trips = ARRAY_SIZE(str0_trip_config),
+	},
+	{
+		.handle = "STR1",
+		.trip_config = str1_trip_config,
+		.num_trips = ARRAY_SIZE(str1_trip_config),
+	},
+	{
+		.handle = "STR2",
+		.trip_config = str2_trip_config,
+		.num_trips = ARRAY_SIZE(str2_trip_config),
+	},
+	{
+		.handle = "STR3",
+		.trip_config = str3_trip_config,
+		.num_trips = ARRAY_SIZE(str3_trip_config),
+	},
+};
+
+static struct pmic_thermal_data bxtwc_thermal_data = {
+	.maps = bxtwc_thermal_irq_map,
+	.num_maps = ARRAY_SIZE(bxtwc_thermal_irq_map),
+};
+
 static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
 	.name = "bxtwc_irq_chip",
 	.status_base = BXTWC_IRQLVL1,
@@ -143,6 +252,10 @@ static struct resource adc_resources[] = {
 	DEFINE_RES_IRQ_NAMED(BXTWC_ADC_IRQ, "ADC"),
 };
 
+static struct resource usbc_resources[] = {
+	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "USBC"),
+};
+
 static struct resource charger_resources[] = {
 	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "CHARGER"),
 	DEFINE_RES_IRQ_NAMED(BXTWC_CHGR1_IRQ, "CHARGER1"),
@@ -168,6 +281,13 @@ static struct mfd_cell bxt_wc_dev[] = {
 		.name = "bxt_wcove_thermal",
 		.num_resources = ARRAY_SIZE(thermal_resources),
 		.resources = thermal_resources,
+		.platform_data = &bxtwc_thermal_data,
+		.pdata_size = sizeof(bxtwc_thermal_data),
+	},
+	{
+		.name = "bxt_wcove_usbc",
+		.num_resources = ARRAY_SIZE(usbc_resources),
+		.resources = usbc_resources,
 	},
 	{
 		.name = "bxt_wcove_ext_charger",
@@ -403,6 +523,10 @@ static int bxtwc_probe(struct platform_device *pdev)
 		goto err_sysfs;
 	}
 
+	/* Unmask CHRG first level irq */
+	regmap_update_bits(pmic->regmap, BXTWC_MIRQLVL1,
+				BXTWC_MIRQLVL1_MCHGR, 0);
+
 	return 0;
 
 err_sysfs:
diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h
index cf619db..7df4302 100644
--- a/include/linux/mfd/intel_soc_pmic.h
+++ b/include/linux/mfd/intel_soc_pmic.h
@@ -21,6 +21,27 @@
 
 #include <linux/regmap.h>
 
+struct trip_config_map {
+	u16 irq_reg;
+	u16 irq_en;
+	u16 evt_stat;
+	u8 irq_mask;
+	u8 irq_en_mask;
+	u8 evt_mask;
+	u8 trip_num;
+};
+
+struct thermal_irq_map {
+	char handle[20];
+	int num_trips;
+	struct trip_config_map *trip_config;
+};
+
+struct pmic_thermal_data {
+	struct thermal_irq_map *maps;
+	int num_maps;
+};
+
 struct intel_soc_pmic {
 	int irq;
 	struct regmap *regmap;
-- 
1.9.1