Merge tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Core Frameworks
   - Make better attempt at matching device with the correct OF node
   - Allow batch removal of hierarchical sub-devices

  New Drivers
   - Add STM32 Clocksource driver
   - Add support for Khadas System Control Microcontroller

  Driver Removal
   - Remove unused driver for TI's SMSC ECE1099

  New Device Support
   - Add support for Intel Emmitsburg PCH to Intel LPSS PCI
   - Add support for Intel Tiger Lake PCH-H to Intel LPSS PCI
   - Add support for Dialog DA revision to Dialog DA9063

  New Functionality
   - Add support for AXP803 to be probed by I2C

  Fix-ups
   - Numerous W=1 warning fixes
   - Device Tree changes (stm32-lptimer, gateworks-gsc, khadas,mcu, stmfx, cros-ec, j721e-system-controller)
   - Enabled Regmap 'fast I/O' in stm32-lptimer
   - Change BUG_ON to WARN_ON in arizona-core
   - Remove superfluous code/initialisation (madera, max14577)
   - Trivial formatting/spelling issues (madera-core, madera-i2c, da9055, max77693-private)
   - Switch to of_platform_populate() in sprd-sc27xx-spi
   - Expand out set/get brightness/pwm macros in lm3533-ctrlbank
   - Disable IRQs on suspend in motorola-cpcap
   - Clean-up error handling in intel_soc_pmic_mrfld
   - Ensure correct removal order of sub-devices in madera
   - Many s/HTTP/HTTPS/ link changes
   - Ensure name used with Regmap is unique in syscon

  Bug Fixes
   - Properly 'put' clock on unbind and error in arizona-core
   - Fix revision handling in da9063
   - Fix 'assignment of read-only location' error in kempld-core
   - Avoid using the Regmap API when atomic in rn5t618
   - Redefine volatile register description in rn5t618
   - Use locking to protect event handler in dln2"

* tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits)
  mfd: syscon: Use a unique name with regmap_config
  mfd: Replace HTTP links with HTTPS ones
  mfd: dln2: Run event handler loop under spinlock
  mfd: madera: Improve handling of regulator unbinding
  mfd: mfd-core: Add mechanism for removal of a subset of children
  mfd: intel_soc_pmic_mrfld: Simplify the return expression of intel_scu_ipc_dev_iowrite8()
  mfd: max14577: Remove redundant initialization of variable current_bits
  mfd: rn5t618: Fix caching of battery related registers
  mfd: max77693-private: Drop a duplicated word
  mfd: da9055: pdata.h: Drop a duplicated word
  mfd: rn5t618: Make restart handler atomic safe
  mfd: kempld-core: Fix 'assignment of read-only location' error
  mfd: axp20x: Allow the AXP803 to be probed by I2C
  mfd: da9063: Add support for latest DA silicon revision
  mfd: da9063: Fix revision handling to correctly select reg tables
  dt-bindings: mfd: st,stmfx: Remove I2C unit name
  dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller
  mfd: motorola-cpcap: Disable interrupt for suspend
  mfd: smsc-ece1099: Remove driver
  mfd: core: Add OF_MFD_CELL_REG() helper
  ...

1 files changed, 246 insertions, 25 deletions

diff --git a/drivers/mfd/da9063-i2c.c b/drivers/mfd/da9063-i2c.c
index 455de74c0dd2..b8217ad303ce 100644
--- a/drivers/mfd/da9063-i2c.c
+++ b/drivers/mfd/da9063-i2c.c
@@ -22,12 +22,124 @@
 #include <linux/of.h>
 #include <linux/regulator/of_regulator.h>
 
+/*
+ * Raw I2C access required for just accessing chip and variant info before we
+ * know which device is present. The info read from the device using this
+ * approach is then used to select the correct regmap tables.
+ */
+
+#define DA9063_REG_PAGE_SIZE		0x100
+#define DA9063_REG_PAGED_ADDR_MASK	0xFF
+
+enum da9063_page_sel_buf_fmt {
+	DA9063_PAGE_SEL_BUF_PAGE_REG = 0,
+	DA9063_PAGE_SEL_BUF_PAGE_VAL,
+	DA9063_PAGE_SEL_BUF_SIZE,
+};
+
+enum da9063_paged_read_msgs {
+	DA9063_PAGED_READ_MSG_PAGE_SEL = 0,
+	DA9063_PAGED_READ_MSG_REG_SEL,
+	DA9063_PAGED_READ_MSG_DATA,
+	DA9063_PAGED_READ_MSG_CNT,
+};
+
+static int da9063_i2c_blockreg_read(struct i2c_client *client, u16 addr,
+				    u8 *buf, int count)
+{
+	struct i2c_msg xfer[DA9063_PAGED_READ_MSG_CNT];
+	u8 page_sel_buf[DA9063_PAGE_SEL_BUF_SIZE];
+	u8 page_num, paged_addr;
+	int ret;
+
+	/* Determine page info based on register address */
+	page_num = (addr / DA9063_REG_PAGE_SIZE);
+	if (page_num > 1) {
+		dev_err(&client->dev, "Invalid register address provided\n");
+		return -EINVAL;
+	}
+
+	paged_addr = (addr % DA9063_REG_PAGE_SIZE) & DA9063_REG_PAGED_ADDR_MASK;
+	page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_REG] = DA9063_REG_PAGE_CON;
+	page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_VAL] =
+		(page_num << DA9063_I2C_PAGE_SEL_SHIFT) & DA9063_REG_PAGE_MASK;
+
+	/* Write reg address, page selection */
+	xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].addr = client->addr;
+	xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].flags = 0;
+	xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].len = DA9063_PAGE_SEL_BUF_SIZE;
+	xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].buf = page_sel_buf;
+
+	/* Select register address */
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].addr = client->addr;
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].flags = 0;
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].len = sizeof(paged_addr);
+	xfer[DA9063_PAGED_READ_MSG_REG_SEL].buf = &paged_addr;
+
+	/* Read data */
+	xfer[DA9063_PAGED_READ_MSG_DATA].addr = client->addr;
+	xfer[DA9063_PAGED_READ_MSG_DATA].flags = I2C_M_RD;
+	xfer[DA9063_PAGED_READ_MSG_DATA].len = count;
+	xfer[DA9063_PAGED_READ_MSG_DATA].buf = buf;
+
+	ret = i2c_transfer(client->adapter, xfer, DA9063_PAGED_READ_MSG_CNT);
+	if (ret < 0) {
+		dev_err(&client->dev, "Paged block read failed: %d\n", ret);
+		return ret;
+	}
+
+	if (ret != DA9063_PAGED_READ_MSG_CNT) {
+		dev_err(&client->dev, "Paged block read failed to complete\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+enum {
+	DA9063_DEV_ID_REG = 0,
+	DA9063_VAR_ID_REG,
+	DA9063_CHIP_ID_REGS,
+};
+
+static int da9063_get_device_type(struct i2c_client *i2c, struct da9063 *da9063)
+{
+	u8 buf[DA9063_CHIP_ID_REGS];
+	int ret;
+
+	ret = da9063_i2c_blockreg_read(i2c, DA9063_REG_DEVICE_ID, buf,
+				       DA9063_CHIP_ID_REGS);
+	if (ret)
+		return ret;
+
+	if (buf[DA9063_DEV_ID_REG] != PMIC_CHIP_ID_DA9063) {
+		dev_err(da9063->dev,
+			"Invalid chip device ID: 0x%02x\n",
+			buf[DA9063_DEV_ID_REG]);
+		return -ENODEV;
+	}
+
+	dev_info(da9063->dev,
+		 "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
+		 buf[DA9063_DEV_ID_REG], buf[DA9063_VAR_ID_REG]);
+
+	da9063->variant_code =
+		(buf[DA9063_VAR_ID_REG] & DA9063_VARIANT_ID_MRC_MASK)
+		>> DA9063_VARIANT_ID_MRC_SHIFT;
+
+	return 0;
+}
+
+/*
+ * Variant specific regmap configs
+ */
+
 static const struct regmap_range da9063_ad_readable_ranges[] = {
 	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
 	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
-	regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
 };
 
 static const struct regmap_range da9063_ad_writeable_ranges[] = {
@@ -72,7 +184,7 @@ static const struct regmap_range da9063_bb_readable_ranges[] = {
 	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
-	regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
 };
 
 static const struct regmap_range da9063_bb_writeable_ranges[] = {
@@ -85,7 +197,7 @@ static const struct regmap_range da9063_bb_writeable_ranges[] = {
 	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
 };
 
-static const struct regmap_range da9063_bb_volatile_ranges[] = {
+static const struct regmap_range da9063_bb_da_volatile_ranges[] = {
 	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
 	regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
 	regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
@@ -107,9 +219,9 @@ static const struct regmap_access_table da9063_bb_writeable_table = {
 	.n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
 };
 
-static const struct regmap_access_table da9063_bb_volatile_table = {
-	.yes_ranges = da9063_bb_volatile_ranges,
-	.n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
+static const struct regmap_access_table da9063_bb_da_volatile_table = {
+	.yes_ranges = da9063_bb_da_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_bb_da_volatile_ranges),
 };
 
 static const struct regmap_range da9063l_bb_readable_ranges[] = {
@@ -117,7 +229,7 @@ static const struct regmap_range da9063l_bb_readable_ranges[] = {
 	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
 	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
 	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
-	regmap_reg_range(DA9063_REG_CHIP_ID, DA9063_REG_CHIP_VARIANT),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
 };
 
 static const struct regmap_range da9063l_bb_writeable_ranges[] = {
@@ -129,7 +241,7 @@ static const struct regmap_range da9063l_bb_writeable_ranges[] = {
 	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
 };
 
-static const struct regmap_range da9063l_bb_volatile_ranges[] = {
+static const struct regmap_range da9063l_bb_da_volatile_ranges[] = {
 	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
 	regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
 	regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
@@ -151,15 +263,70 @@ static const struct regmap_access_table da9063l_bb_writeable_table = {
 	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
 };
 
-static const struct regmap_access_table da9063l_bb_volatile_table = {
-	.yes_ranges = da9063l_bb_volatile_ranges,
-	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_volatile_ranges),
+static const struct regmap_access_table da9063l_bb_da_volatile_table = {
+	.yes_ranges = da9063l_bb_da_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_bb_da_volatile_ranges),
+};
+
+static const struct regmap_range da9063_da_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063_da_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
+};
+
+static const struct regmap_access_table da9063_da_readable_table = {
+	.yes_ranges = da9063_da_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_da_readable_ranges),
+};
+
+static const struct regmap_access_table da9063_da_writeable_table = {
+	.yes_ranges = da9063_da_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063_da_writeable_ranges),
+};
+
+static const struct regmap_range da9063l_da_readable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
+	regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
+};
+
+static const struct regmap_range da9063l_da_writeable_ranges[] = {
+	regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
+	regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
+	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
+	regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
+	regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
+	regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
+};
+
+static const struct regmap_access_table da9063l_da_readable_table = {
+	.yes_ranges = da9063l_da_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_da_readable_ranges),
+};
+
+static const struct regmap_access_table da9063l_da_writeable_table = {
+	.yes_ranges = da9063l_da_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(da9063l_da_writeable_ranges),
 };
 
 static const struct regmap_range_cfg da9063_range_cfg[] = {
 	{
 		.range_min = DA9063_REG_PAGE_CON,
-		.range_max = DA9063_REG_CHIP_VARIANT,
+		.range_max = DA9063_REG_CONFIG_ID,
 		.selector_reg = DA9063_REG_PAGE_CON,
 		.selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
 		.selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
@@ -173,7 +340,7 @@ static struct regmap_config da9063_regmap_config = {
 	.val_bits = 8,
 	.ranges = da9063_range_cfg,
 	.num_ranges = ARRAY_SIZE(da9063_range_cfg),
-	.max_register = DA9063_REG_CHIP_VARIANT,
+	.max_register = DA9063_REG_CONFIG_ID,
 
 	.cache_type = REGCACHE_RBTREE,
 };
@@ -199,18 +366,72 @@ static int da9063_i2c_probe(struct i2c_client *i2c,
 	da9063->chip_irq = i2c->irq;
 	da9063->type = id->driver_data;
 
-	if (da9063->variant_code == PMIC_DA9063_AD) {
-		da9063_regmap_config.rd_table = &da9063_ad_readable_table;
-		da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
-		da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
-	} else if (da9063->type == PMIC_TYPE_DA9063L) {
-		da9063_regmap_config.rd_table = &da9063l_bb_readable_table;
-		da9063_regmap_config.wr_table = &da9063l_bb_writeable_table;
-		da9063_regmap_config.volatile_table = &da9063l_bb_volatile_table;
-	} else {
-		da9063_regmap_config.rd_table = &da9063_bb_readable_table;
-		da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
-		da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
+	ret = da9063_get_device_type(i2c, da9063);
+	if (ret)
+		return ret;
+
+	switch (da9063->type) {
+	case PMIC_TYPE_DA9063:
+		switch (da9063->variant_code) {
+		case PMIC_DA9063_AD:
+			da9063_regmap_config.rd_table =
+				&da9063_ad_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_ad_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_ad_volatile_table;
+			break;
+		case PMIC_DA9063_BB:
+		case PMIC_DA9063_CA:
+			da9063_regmap_config.rd_table =
+				&da9063_bb_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_bb_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_bb_da_volatile_table;
+			break;
+		case PMIC_DA9063_DA:
+			da9063_regmap_config.rd_table =
+				&da9063_da_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063_da_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063_bb_da_volatile_table;
+			break;
+		default:
+			dev_err(da9063->dev,
+				"Chip variant not supported for DA9063\n");
+			return -ENODEV;
+		}
+		break;
+	case PMIC_TYPE_DA9063L:
+		switch (da9063->variant_code) {
+		case PMIC_DA9063_BB:
+		case PMIC_DA9063_CA:
+			da9063_regmap_config.rd_table =
+				&da9063l_bb_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063l_bb_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063l_bb_da_volatile_table;
+			break;
+		case PMIC_DA9063_DA:
+			da9063_regmap_config.rd_table =
+				&da9063l_da_readable_table;
+			da9063_regmap_config.wr_table =
+				&da9063l_da_writeable_table;
+			da9063_regmap_config.volatile_table =
+				&da9063l_bb_da_volatile_table;
+			break;
+		default:
+			dev_err(da9063->dev,
+				"Chip variant not supported for DA9063L\n");
+			return -ENODEV;
+		}
+		break;
+	default:
+		dev_err(da9063->dev, "Chip type not supported\n");
+		return -ENODEV;
 	}
 
 	da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);