* [PATCH V2 1/9] regulator: da9121: Add header file
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 2/9] regulator: da9121: Add device variants Adam Ward
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Add header file for Dialog Semiconductor DA9121 regulator and related
devices, mostly autogenerated from the chip design databases, and update
driver to replace local defines with those from header.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 15 +-
drivers/regulator/da9121-regulator.h | 291 +++++++++++++++++++++++++++++++++++
2 files changed, 296 insertions(+), 10 deletions(-)
create mode 100644 drivers/regulator/da9121-regulator.h
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 66bdfd1..c11fe04 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -9,12 +9,7 @@
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/i2c.h>
-
-#define DA9121_BUCK_BUCK1_0 0x20
-#define DA9121_BUCK_BUCK1_0_CH1_EN BIT(0)
-
-#define DA9121_BUCK_BUCK1_5 0x25
-#define DA9121_BUCK_BUCK1_5_CH1_A_VOUT GENMASK(7, 0)
+#include "da9121-regulator.h"
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
@@ -47,10 +42,10 @@
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
- .vsel_reg = DA9121_BUCK_BUCK1_5,
- .vsel_mask = DA9121_BUCK_BUCK1_5_CH1_A_VOUT,
- .enable_reg = DA9121_BUCK_BUCK1_0,
- .enable_mask = DA9121_BUCK_BUCK1_0_CH1_EN,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
/* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */
.ramp_delay = 20000,
/* tBUCK_EN */
diff --git a/drivers/regulator/da9121-regulator.h b/drivers/regulator/da9121-regulator.h
new file mode 100644
index 0000000..3c34cb8
--- /dev/null
+++ b/drivers/regulator/da9121-regulator.h
@@ -0,0 +1,291 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * DA9121 Single-channel dual-phase 10A buck converter
+ * DA9130 Single-channel dual-phase 10A buck converter (Automotive)
+ * DA9217 Single-channel dual-phase 6A buck converter
+ * DA9122 Dual-channel single-phase 5A buck converter
+ * DA9131 Dual-channel single-phase 5A buck converter (Automotive)
+ * DA9220 Dual-channel single-phase 3A buck converter
+ * DA9132 Dual-channel single-phase 3A buck converter (Automotive)
+ *
+ * Copyright (C) 2020 Dialog Semiconductor
+ *
+ * Authors: Steve Twiss, Dialog Semiconductor
+ * Adam Ward, Dialog Semiconductor
+ */
+
+#ifndef __DA9121_REGISTERS_H__
+#define __DA9121_REGISTERS_H__
+
+/* Values for: DA9121_REG_BUCK_BUCKx_4 registers, fields CHx_y_MODE
+ * DA9121_REG_BUCK_BUCKx_7 registers, fields CHx_RIPPLE_CANCEL
+ */
+#include <dt-bindings/regulator/dlg,da9121-regulator.h>
+
+enum da9121_variant {
+ DA9121_TYPE_DA9121_DA9130,
+ DA9121_TYPE_DA9220_DA9132,
+ DA9121_TYPE_DA9122_DA9131,
+ DA9121_TYPE_DA9217
+};
+
+/* Minimum, maximum and default polling millisecond periods are provided
+ * here as an example. It is expected that any final implementation will
+ * include a modification of these settings to match the required
+ * application.
+ */
+#define DA9121_DEFAULT_POLLING_PERIOD_MS 3000
+#define DA9121_MAX_POLLING_PERIOD_MS 10000
+#define DA9121_MIN_POLLING_PERIOD_MS 1000
+
+/* Registers */
+
+#define DA9121_REG_SYS_STATUS_0 0x01
+#define DA9121_REG_SYS_STATUS_1 0x02
+#define DA9121_REG_SYS_STATUS_2 0x03
+#define DA9121_REG_SYS_EVENT_0 0x04
+#define DA9121_REG_SYS_EVENT_1 0x05
+#define DA9121_REG_SYS_EVENT_2 0x06
+#define DA9121_REG_SYS_MASK_0 0x07
+#define DA9121_REG_SYS_MASK_1 0x08
+#define DA9121_REG_SYS_MASK_2 0x09
+#define DA9121_REG_SYS_MASK_3 0x0A
+#define DA9121_REG_SYS_CONFIG_0 0x0B
+#define DA9121_REG_SYS_CONFIG_1 0x0C
+#define DA9121_REG_SYS_CONFIG_2 0x0D
+#define DA9121_REG_SYS_CONFIG_3 0x0E
+#define DA9121_REG_SYS_GPIO0_0 0x10
+#define DA9121_REG_SYS_GPIO0_1 0x11
+#define DA9121_REG_SYS_GPIO1_0 0x12
+#define DA9121_REG_SYS_GPIO1_1 0x13
+#define DA9121_REG_SYS_GPIO2_0 0x14
+#define DA9121_REG_SYS_GPIO2_1 0x15
+#define DA9121_REG_BUCK_BUCK1_0 0x20
+#define DA9121_REG_BUCK_BUCK1_1 0x21
+#define DA9121_REG_BUCK_BUCK1_2 0x22
+#define DA9121_REG_BUCK_BUCK1_3 0x23
+#define DA9121_REG_BUCK_BUCK1_4 0x24
+#define DA9121_REG_BUCK_BUCK1_5 0x25
+#define DA9121_REG_BUCK_BUCK1_6 0x26
+#define DA9121_REG_BUCK_BUCK1_7 0x27
+#define DA9xxx_REG_BUCK_BUCK2_0 0x28
+#define DA9xxx_REG_BUCK_BUCK2_1 0x29
+#define DA9xxx_REG_BUCK_BUCK2_2 0x2A
+#define DA9xxx_REG_BUCK_BUCK2_3 0x2B
+#define DA9xxx_REG_BUCK_BUCK2_4 0x2C
+#define DA9xxx_REG_BUCK_BUCK2_5 0x2D
+#define DA9xxx_REG_BUCK_BUCK2_6 0x2E
+#define DA9xxx_REG_BUCK_BUCK2_7 0x2F
+#define DA9121_REG_OTP_DEVICE_ID 0x48
+#define DA9121_REG_OTP_VARIANT_ID 0x49
+#define DA9121_REG_OTP_CUSTOMER_ID 0x4A
+#define DA9121_REG_OTP_CONFIG_ID 0x4B
+
+/* Register bits */
+
+/* DA9121_REG_SYS_STATUS_0 */
+
+#define DA9xxx_MASK_SYS_STATUS_0_SG BIT(2)
+#define DA9121_MASK_SYS_STATUS_0_TEMP_CRIT BIT(1)
+#define DA9121_MASK_SYS_STATUS_0_TEMP_WARN BIT(0)
+
+/* DA9121_REG_SYS_STATUS_1 */
+
+#define DA9xxx_MASK_SYS_STATUS_1_PG2 BIT(7)
+#define DA9xxx_MASK_SYS_STATUS_1_OV2 BIT(6)
+#define DA9xxx_MASK_SYS_STATUS_1_UV2 BIT(5)
+#define DA9xxx_MASK_SYS_STATUS_1_OC2 BIT(4)
+#define DA9121_MASK_SYS_STATUS_1_PG1 BIT(3)
+#define DA9121_MASK_SYS_STATUS_1_OV1 BIT(2)
+#define DA9121_MASK_SYS_STATUS_1_UV1 BIT(1)
+#define DA9121_MASK_SYS_STATUS_1_OC1 BIT(0)
+
+/* DA9121_REG_SYS_STATUS_2 */
+
+#define DA9121_MASK_SYS_STATUS_2_GPIO2 BIT(2)
+#define DA9121_MASK_SYS_STATUS_2_GPIO1 BIT(1)
+#define DA9121_MASK_SYS_STATUS_2_GPIO0 BIT(0)
+
+/* DA9121_REG_SYS_EVENT_0 */
+
+#define DA9xxx_MASK_SYS_EVENT_0_E_SG BIT(2)
+#define DA9121_MASK_SYS_EVENT_0_E_TEMP_CRIT BIT(1)
+#define DA9121_MASK_SYS_EVENT_0_E_TEMP_WARN BIT(0)
+
+/* DA9121_REG_SYS_EVENT_1 */
+
+#define DA9xxx_MASK_SYS_EVENT_1_E_PG2 BIT(7)
+#define DA9xxx_MASK_SYS_EVENT_1_E_OV2 BIT(6)
+#define DA9xxx_MASK_SYS_EVENT_1_E_UV2 BIT(5)
+#define DA9xxx_MASK_SYS_EVENT_1_E_OC2 BIT(4)
+#define DA9121_MASK_SYS_EVENT_1_E_PG1 BIT(3)
+#define DA9121_MASK_SYS_EVENT_1_E_OV1 BIT(2)
+#define DA9121_MASK_SYS_EVENT_1_E_UV1 BIT(1)
+#define DA9121_MASK_SYS_EVENT_1_E_OC1 BIT(0)
+
+/* DA9121_REG_SYS_EVENT_2 */
+
+#define DA9121_MASK_SYS_EVENT_2_E_GPIO2 BIT(2)
+#define DA9121_MASK_SYS_EVENT_2_E_GPIO1 BIT(1)
+#define DA9121_MASK_SYS_EVENT_2_E_GPIO0 BIT(0)
+
+/* DA9121_REG_SYS_MASK_0 */
+
+#define DA9xxx_MASK_SYS_MASK_0_M_SG BIT(2)
+#define DA9121_MASK_SYS_MASK_0_M_TEMP_CRIT BIT(1)
+#define DA9121_MASK_SYS_MASK_0_M_TEMP_WARN BIT(0)
+
+/* DA9121_REG_SYS_MASK_1 */
+
+#define DA9xxx_MASK_SYS_MASK_1_M_PG2 BIT(7)
+#define DA9xxx_MASK_SYS_MASK_1_M_OV2 BIT(6)
+#define DA9xxx_MASK_SYS_MASK_1_M_UV2 BIT(5)
+#define DA9xxx_MASK_SYS_MASK_1_M_OC2 BIT(4)
+#define DA9121_MASK_SYS_MASK_1_M_PG1 BIT(3)
+#define DA9121_MASK_SYS_MASK_1_M_OV1 BIT(2)
+#define DA9121_MASK_SYS_MASK_1_M_UV1 BIT(1)
+#define DA9121_MASK_SYS_MASK_1_M_OC1 BIT(0)
+
+/* DA9121_REG_SYS_MASK_2 */
+
+#define DA9121_MASK_SYS_MASK_2_M_GPIO2 BIT(2)
+#define DA9121_MASK_SYS_MASK_2_M_GPIO1 BIT(1)
+#define DA9121_MASK_SYS_MASK_2_M_GPIO0 BIT(0)
+
+/* DA9122_REG_SYS_MASK_3 */
+
+#define DA9121_MASK_SYS_MASK_3_M_VR_HOT BIT(3)
+#define DA9xxx_MASK_SYS_MASK_3_M_SG_STAT BIT(2)
+#define DA9xxx_MASK_SYS_MASK_3_M_PG2_STAT BIT(1)
+#define DA9121_MASK_SYS_MASK_3_M_PG1_STAT BIT(0)
+
+/* DA9121_REG_SYS_CONFIG_0 */
+
+#define DA9121_MASK_SYS_CONFIG_0_CH1_DIS_DLY 0xF0
+#define DA9121_MASK_SYS_CONFIG_0_CH1_EN_DLY 0x0F
+
+/* DA9xxx_REG_SYS_CONFIG_1 */
+
+#define DA9xxx_MASK_SYS_CONFIG_1_CH2_DIS_DLY 0xF0
+#define DA9xxx_MASK_SYS_CONFIG_1_CH2_EN_DLY 0x0F
+
+/* DA9121_REG_SYS_CONFIG_2 */
+
+#define DA9121_MASK_SYS_CONFIG_2_OC_LATCHOFF 0x60
+#define DA9121_MASK_SYS_CONFIG_2_OC_DVC_MASK BIT(4)
+#define DA9121_MASK_SYS_CONFIG_2_PG_DVC_MASK 0x0C
+
+/* DA9121_REG_SYS_CONFIG_3 */
+
+#define DA9121_MASK_SYS_CONFIG_3_OSC_TUNE 0X70
+#define DA9121_MASK_SYS_CONFIG_3_I2C_TIMEOUT BIT(1)
+
+/* DA9121_REG_SYS_GPIO0_0 */
+
+#define DA9121_MASK_SYS_GPIO0_0_GPIO0_MODE 0X1E
+#define DA9121_MASK_SYS_GPIO0_0_GPIO0_OBUF BIT(0)
+
+/* DA9121_REG_SYS_GPIO0_1 */
+
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_DEB_FALL BIT(7)
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_DEB_RISE BIT(6)
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_DEB 0x30
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_PUPD BIT(3)
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_POL BIT(2)
+#define DA9121_MASK_SYS_GPIO0_1_GPIO0_TRIG 0x03
+
+/* DA9121_REG_SYS_GPIO1_0 */
+
+#define DA9121_MASK_SYS_GPIO1_0_GPIO1_MODE 0x1E
+#define DA9121_MASK_SYS_GPIO1_0_GPIO1_OBUF BIT(0)
+
+/* DA9121_REG_SYS_GPIO1_1 */
+
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_DEB_FALL BIT(7)
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_DEB_RISE BIT(6)
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_DEB 0x30
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_PUPD BIT(3)
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_POL BIT(2)
+#define DA9121_MASK_SYS_GPIO1_1_GPIO1_TRIG 0x03
+
+/* DA9121_REG_SYS_GPIO2_0 */
+
+#define DA9121_MASK_SYS_GPIO2_0_GPIO2_MODE 0x1E
+#define DA9121_MASK_SYS_GPIO2_0_GPIO2_OBUF BIT(0)
+
+/* DA9121_REG_SYS_GPIO2_1 */
+
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_DEB_FALL BIT(7)
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_DEB_RISE BIT(6)
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_DEB 0x30
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_PUPD BIT(3)
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_POL BIT(2)
+#define DA9121_MASK_SYS_GPIO2_1_GPIO2_TRIG 0x03
+
+/* DA9121_REG_BUCK_BUCK1_0 / DA9xxx_REG_BUCK_BUCK2_0 */
+
+#define DA9121_MASK_BUCK_BUCKx_0_CHx_SR_DVC_DWN 0x70
+#define DA9121_MASK_BUCK_BUCKx_0_CHx_SR_DVC_UP 0x0E
+#define DA9121_MASK_BUCK_BUCKx_0_CHx_EN BIT(0)
+
+/* DA9121_REG_BUCK_BUCK1_1 / DA9xxx_REG_BUCK_BUCK2_1 */
+
+#define DA9121_MASK_BUCK_BUCKx_1_CHx_SR_SHDN 0x70
+#define DA9121_MASK_BUCK_BUCKx_1_CHx_SR_STARTUP 0x0E
+#define DA9121_MASK_BUCK_BUCKx_1_CHx_PD_DIS BIT(0)
+
+/* DA9121_REG_BUCK_BUCK1_2 / DA9xxx_REG_BUCK_BUCK2_2 */
+
+#define DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM 0x0F
+
+/* DA9121_REG_BUCK_BUCK1_3 / DA9xxx_REG_BUCK_BUCK2_3 */
+
+#define DA9121_MASK_BUCK_BUCKx_3_CHx_VMAX 0xFF
+
+/* DA9121_REG_BUCK_BUCK1_4 / DA9xxx_REG_BUCK_BUCK2_4 */
+
+#define DA9121_MASK_BUCK_BUCKx_4_CHx_VSEL BIT(4)
+#define DA9121_MASK_BUCK_BUCKx_4_CHx_B_MODE 0x0C
+#define DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE 0x03
+
+/* DA9121_REG_BUCK_BUCK1_5 / DA9xxx_REG_BUCK_BUCK2_5 */
+
+#define DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT 0xFF
+
+/* DA9121_REG_BUCK_BUCK1_6 / DA9xxx_REG_BUCK_BUCK2_6 */
+
+#define DA9121_MASK_BUCK_BUCKx_6_CHx_B_VOUT 0xFF
+
+/* DA9121_REG_BUCK_BUCK1_7 / DA9xxx_REG_BUCK_BUCK2_7 */
+
+#define DA9xxx_MASK_BUCK_BUCKx_7_CHx_RIPPLE_CANCEL 0x03
+
+
+/* DA9121_REG_OTP_DEVICE_ID */
+
+#define DA9121_MASK_OTP_DEVICE_ID_DEV_ID 0xFF
+
+#define DA9121_DEVICE_ID 0x05
+
+/* DA9121_REG_OTP_VARIANT_ID */
+
+#define DA9121_SHIFT_OTP_VARIANT_ID_MRC 4
+#define DA9121_MASK_OTP_VARIANT_ID_MRC 0xF0
+#define DA9121_SHIFT_OTP_VARIANT_ID_VRC 0
+#define DA9121_MASK_OTP_VARIANT_ID_VRC 0x0F
+
+#define DA9121_VARIANT_MRC_BASE 0x2
+#define DA9121_VARIANT_VRC 0x1
+#define DA9220_VARIANT_VRC 0x0
+#define DA9122_VARIANT_VRC 0x2
+#define DA9217_VARIANT_VRC 0x7
+
+/* DA9121_REG_OTP_CUSTOMER_ID */
+
+#define DA9121_MASK_OTP_CUSTOMER_ID_CUST_ID 0xFF
+
+/* DA9121_REG_OTP_CONFIG_ID */
+
+#define DA9121_MASK_OTP_CONFIG_ID_CONFIG_REV 0xFF
+
+#endif /* __DA9121_REGISTERS_H__ */
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 2/9] regulator: da9121: Add device variants
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
2020-11-30 15:42 ` [PATCH V2 1/9] regulator: da9121: Add header file Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 3/9] regulator: da9121: Add device variant regmaps Adam Ward
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Add basic support for configuration to reference variants of this device,
and track the selected variant within the driver.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 46 +++++++++++++++++++++++++++++++++---
1 file changed, 43 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index c11fe04..5bebdb2 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -11,6 +11,12 @@
#include <linux/i2c.h>
#include "da9121-regulator.h"
+/* Chip data */
+struct da9121 {
+ struct device *dev;
+ int variant_id;
+};
+
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
#define DA9121_STEP_MV 10
@@ -53,19 +59,46 @@
};
static const struct of_device_id da9121_dt_ids[] = {
- { .compatible = "dlg,da9121", },
+ { .compatible = "dlg,da9121", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
+ { .compatible = "dlg,da9130", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
+ { .compatible = "dlg,da9217", .data = (void *) DA9121_TYPE_DA9217 },
+ { .compatible = "dlg,da9122", .data = (void *) DA9121_TYPE_DA9122_DA9131 },
+ { .compatible = "dlg,da9131", .data = (void *) DA9121_TYPE_DA9122_DA9131 },
+ { .compatible = "dlg,da9220", .data = (void *) DA9121_TYPE_DA9220_DA9132 },
+ { .compatible = "dlg,da9132", .data = (void *) DA9121_TYPE_DA9220_DA9132 },
{ }
};
MODULE_DEVICE_TABLE(of, da9121_dt_ids);
+static inline int da9121_of_get_id(struct device *dev)
+{
+ const struct of_device_id *id = of_match_device(da9121_dt_ids, dev);
+
+ if (!id) {
+ dev_err(dev, "%s: Failed\n", __func__);
+ return -EINVAL;
+ }
+ return (uintptr_t)id->data;
+}
+
static int da9121_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ struct da9121 *chip;
+ int ret = 0;
struct device *dev = &i2c->dev;
struct regulator_config config = {};
struct regulator_dev *rdev;
struct regmap *regmap;
+ chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
+ if (!chip) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ chip->variant_id = da9121_of_get_id(&i2c->dev);
+
regmap = devm_regmap_init_i2c(i2c, &da9121_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
@@ -80,11 +113,18 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
return PTR_ERR(rdev);
}
- return 0;
+error:
+ return ret;
}
static const struct i2c_device_id da9121_i2c_id[] = {
- { "da9121", 0 },
+ {"da9121", DA9121_TYPE_DA9121_DA9130},
+ {"da9130", DA9121_TYPE_DA9121_DA9130},
+ {"da9217", DA9121_TYPE_DA9217},
+ {"da9122", DA9121_TYPE_DA9122_DA9131},
+ {"da9131", DA9121_TYPE_DA9122_DA9131},
+ {"da9220", DA9121_TYPE_DA9220_DA9132},
+ {"da9132", DA9121_TYPE_DA9220_DA9132},
{},
};
MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 3/9] regulator: da9121: Add device variant regmaps
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
2020-11-30 15:42 ` [PATCH V2 1/9] regulator: da9121: Add header file Adam Ward
2020-11-30 15:42 ` [PATCH V2 2/9] regulator: da9121: Add device variants Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 4/9] regulator: da9121: Add device variant descriptors Adam Ward
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Add ability to probe device and validate configuration, then apply a regmap
configuration for a single or dual buck device accordingly.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/Kconfig | 14 +-
drivers/regulator/da9121-regulator.c | 244 ++++++++++++++++++++++++++++++++---
include/linux/regulator/da9121.h | 25 ++++
3 files changed, 262 insertions(+), 21 deletions(-)
create mode 100644 include/linux/regulator/da9121.h
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index ca908bd..5371709 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -313,13 +313,21 @@ config REGULATOR_DA9063
will be called da9063-regulator.
config REGULATOR_DA9121
- tristate "Dialog Semiconductor DA9121 regulator"
+ tristate "Dialog Semiconductor DA9121/DA9122/DA9220/DA9217/DA9130/DA9131/DA9132 regulator"
depends on I2C && OF
select REGMAP_I2C
help
Say y here to support for the Dialog Semiconductor DA9121. The
- DA9210 is a dual-phase buck converter controlled through an I2C
- interface.
+ DA9121 is a single channel dual-phase buck converter controlled
+ through an I2C interface.
+
+ DA9121 Single-channel dual-phase 10A buck converter
+ DA9130 Single-channel dual-phase 10A buck converter (Automotive)
+ DA9217 Single-channel dual-phase 6A buck converter
+ DA9122 Dual-channel single-phase 5A buck converter
+ DA9131 Dual-channel single-phase 5A buck converter (Automotive)
+ DA9220 Dual-channel single-phase 3A buck converter
+ DA9132 Dual-channel single-phase 3A buck converter (Automotive)
This driver can also be built as a module. If so, the module
will be called da9121-regulator.
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 5bebdb2..137b1df 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -1,5 +1,17 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (C) 2020 Axis Communications AB */
+//
+// DA9121 Single-channel dual-phase 10A buck converter
+//
+// Copyright (C) 2020 Axis Communications AB
+//
+// DA9130 Single-channel dual-phase 10A buck converter (Automotive)
+// DA9217 Single-channel dual-phase 6A buck converter
+// DA9122 Dual-channel single-phase 5A buck converter
+// DA9131 Dual-channel single-phase 5A buck converter (Automotive)
+// DA9220 Dual-channel single-phase 3A buck converter
+// DA9132 Dual-channel single-phase 3A buck converter (Automotive)
+//
+// Copyright (C) 2020 Dialog Semiconductor
#include <linux/of_device.h>
#include <linux/regulator/of_regulator.h>
@@ -9,26 +21,17 @@
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/i2c.h>
+#include <linux/regulator/da9121.h>
+
#include "da9121-regulator.h"
/* Chip data */
struct da9121 {
struct device *dev;
+ struct regmap *regmap;
int variant_id;
};
-#define DA9121_MIN_MV 300
-#define DA9121_MAX_MV 1900
-#define DA9121_STEP_MV 10
-#define DA9121_MIN_SEL (DA9121_MIN_MV / DA9121_STEP_MV)
-#define DA9121_N_VOLTAGES (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \
- + 1 + DA9121_MIN_SEL)
-
-static const struct regmap_config da9121_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-};
-
static const struct regulator_ops da9121_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
@@ -38,6 +41,13 @@ struct da9121 {
.list_voltage = regulator_list_voltage_linear,
};
+#define DA9121_MIN_MV 300
+#define DA9121_MAX_MV 1900
+#define DA9121_STEP_MV 10
+#define DA9121_MIN_SEL (DA9121_MIN_MV / DA9121_STEP_MV)
+#define DA9121_N_VOLTAGES (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \
+ + 1 + DA9121_MIN_SEL)
+
static const struct regulator_desc da9121_reg = {
.name = "da9121",
.of_match = "buck1",
@@ -58,6 +68,205 @@ struct da9121 {
.enable_time = 20,
};
+/* DA9121 chip register model */
+static const struct regmap_range da9121_1ch_readable_ranges[] = {
+ regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
+ regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
+ regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
+ regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
+};
+
+static const struct regmap_access_table da9121_1ch_readable_table = {
+ .yes_ranges = da9121_1ch_readable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(da9121_1ch_readable_ranges),
+};
+
+static const struct regmap_range da9121_2ch_readable_ranges[] = {
+ regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
+ regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
+ regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_7),
+ regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_7),
+ regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
+};
+
+static const struct regmap_access_table da9121_2ch_readable_table = {
+ .yes_ranges = da9121_2ch_readable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(da9121_2ch_readable_ranges),
+};
+
+static const struct regmap_range da9121_1ch_writeable_ranges[] = {
+ regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
+ regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
+ regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_6),
+};
+
+static const struct regmap_access_table da9121_1ch_writeable_table = {
+ .yes_ranges = da9121_1ch_writeable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(da9121_1ch_writeable_ranges),
+};
+
+static const struct regmap_range da9121_2ch_writeable_ranges[] = {
+ regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
+ regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
+ regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_7),
+ regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_2),
+ regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_4, DA9xxx_REG_BUCK_BUCK2_7),
+};
+
+static const struct regmap_access_table da9121_2ch_writeable_table = {
+ .yes_ranges = da9121_2ch_writeable_ranges,
+ .n_yes_ranges = ARRAY_SIZE(da9121_2ch_writeable_ranges),
+};
+
+
+static const struct regmap_range da9121_volatile_ranges[] = {
+ regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_EVENT_2),
+ regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
+ regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
+};
+
+static const struct regmap_access_table da9121_volatile_table = {
+ .yes_ranges = da9121_volatile_ranges,
+ .n_yes_ranges = ARRAY_SIZE(da9121_volatile_ranges),
+};
+
+/* DA9121 regmap config for 1 channel variants */
+static struct regmap_config da9121_1ch_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = DA9121_REG_OTP_CONFIG_ID,
+ .rd_table = &da9121_1ch_readable_table,
+ .wr_table = &da9121_1ch_writeable_table,
+ .volatile_table = &da9121_volatile_table,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+/* DA9121 regmap config for 2 channel variants */
+static struct regmap_config da9121_2ch_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = DA9121_REG_OTP_CONFIG_ID,
+ .rd_table = &da9121_2ch_readable_table,
+ .wr_table = &da9121_2ch_writeable_table,
+ .volatile_table = &da9121_volatile_table,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
+{
+ u32 device_id;
+ u8 chip_id = chip->variant_id;
+ u32 variant_id;
+ u8 variant_mrc, variant_vrc;
+ char *type;
+ const char *name;
+ bool config_match = false;
+ int ret = 0;
+
+ ret = regmap_read(chip->regmap, DA9121_REG_OTP_DEVICE_ID, &device_id);
+ if (ret < 0) {
+ dev_err(chip->dev, "Cannot read device ID: %d\n", ret);
+ goto error;
+ }
+
+ ret = regmap_read(chip->regmap, DA9121_REG_OTP_VARIANT_ID, &variant_id);
+ if (ret < 0) {
+ dev_err(chip->dev, "Cannot read variant ID: %d\n", ret);
+ goto error;
+ }
+
+ if (device_id != DA9121_DEVICE_ID) {
+ dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id);
+ ret = -ENODEV;
+ goto error;
+ }
+
+ variant_vrc = variant_id & DA9121_MASK_OTP_VARIANT_ID_VRC;
+
+ switch (variant_vrc) {
+ case DA9121_VARIANT_VRC:
+ type = "DA9121/DA9130";
+ config_match = (chip_id == DA9121_TYPE_DA9121_DA9130);
+ break;
+ case DA9220_VARIANT_VRC:
+ type = "DA9220/DA9132";
+ config_match = (chip_id == DA9121_TYPE_DA9220_DA9132);
+ break;
+ case DA9122_VARIANT_VRC:
+ type = "DA9122/DA9131";
+ config_match = (chip_id == DA9121_TYPE_DA9122_DA9131);
+ break;
+ case DA9217_VARIANT_VRC:
+ type = "DA9217";
+ config_match = (chip_id == DA9121_TYPE_DA9217);
+ break;
+ default:
+ type = "Unknown";
+ break;
+ }
+
+ dev_info(chip->dev,
+ "Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n",
+ device_id, variant_id, type);
+
+ if (!config_match) {
+ dev_err(chip->dev, "Device tree configuration '%s' does not match detected device.\n", name);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ variant_mrc = (variant_id & DA9121_MASK_OTP_VARIANT_ID_MRC)
+ >> DA9121_SHIFT_OTP_VARIANT_ID_MRC;
+
+ if ((device_id == DA9121_DEVICE_ID) &&
+ (variant_mrc < DA9121_VARIANT_MRC_BASE)) {
+ dev_err(chip->dev,
+ "Cannot support variant MRC: 0x%02X\n", variant_mrc);
+ ret = -EINVAL;
+ }
+error:
+ return ret;
+}
+
+static int da9121_assign_chip_model(struct i2c_client *i2c,
+ struct da9121 *chip)
+{
+ struct regmap_config *regmap;
+ int ret = 0;
+
+ chip->dev = &i2c->dev;
+
+ switch (chip->variant_id) {
+ case DA9121_TYPE_DA9121_DA9130:
+ fallthrough;
+ case DA9121_TYPE_DA9217:
+ regmap = &da9121_1ch_regmap_config;
+ break;
+ case DA9121_TYPE_DA9122_DA9131:
+ fallthrough;
+ case DA9121_TYPE_DA9220_DA9132:
+ regmap = &da9121_2ch_regmap_config;
+ break;
+ }
+
+ chip->regmap = devm_regmap_init_i2c(i2c, regmap);
+ if (IS_ERR(chip->regmap)) {
+ ret = PTR_ERR(chip->regmap);
+ dev_err(chip->dev, "Failed to configure a register map: %d\n",
+ ret);
+ }
+
+ ret = da9121_check_device_type(i2c, chip);
+
+ return ret;
+}
+
static const struct of_device_id da9121_dt_ids[] = {
{ .compatible = "dlg,da9121", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
{ .compatible = "dlg,da9130", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
@@ -89,7 +298,6 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
struct device *dev = &i2c->dev;
struct regulator_config config = {};
struct regulator_dev *rdev;
- struct regmap *regmap;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
if (!chip) {
@@ -99,13 +307,13 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
chip->variant_id = da9121_of_get_id(&i2c->dev);
- regmap = devm_regmap_init_i2c(i2c, &da9121_regmap_config);
- if (IS_ERR(regmap))
- return PTR_ERR(regmap);
+ ret = da9121_assign_chip_model(i2c, chip);
+ if (ret < 0)
+ goto error;
config.dev = &i2c->dev;
config.of_node = dev->of_node;
- config.regmap = regmap;
+ config.regmap = chip->regmap;
rdev = devm_regulator_register(&i2c->dev, &da9121_reg, &config);
if (IS_ERR(rdev)) {
diff --git a/include/linux/regulator/da9121.h b/include/linux/regulator/da9121.h
new file mode 100644
index 0000000..c31180d
--- /dev/null
+++ b/include/linux/regulator/da9121.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * DA9121 Single-channel dual-phase 10A buck converter
+ * DA9130 Single-channel dual-phase 10A buck converter (Automotive)
+ * DA9217 Single-channel dual-phase 6A buck converter
+ * DA9122 Dual-channel single-phase 5A buck converter
+ * DA9131 Dual-channel single-phase 5A buck converter (Automotive)
+ * DA9220 Dual-channel single-phase 3A buck converter
+ * DA9132 Dual-channel single-phase 3A buck converter (Automotive)
+ *
+ * Copyright (C) 2020 Dialog Semiconductor
+ *
+ * Authors: Adam Ward, Dialog Semiconductor
+ */
+
+#ifndef __LINUX_REGULATOR_DA9121_H
+#define __LINUX_REGULATOR_DA9121_H
+
+enum {
+ DA9121_IDX_BUCK1,
+ DA9121_IDX_BUCK2,
+ DA9121_IDX_MAX
+};
+
+#endif
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 4/9] regulator: da9121: Add device variant descriptors
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (2 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 3/9] regulator: da9121: Add device variant regmaps Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 5/9] regulator: da9121: Add support for device variants via devicetree Adam Ward
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Descriptors for bucks in all variants, ready for of_regulator_match
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 110 +++++++++++++++++++++++++++++++++++
1 file changed, 110 insertions(+)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 137b1df..a717e2b 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -41,6 +41,11 @@ struct da9121 {
.list_voltage = regulator_list_voltage_linear,
};
+static struct of_regulator_match da9121_matches[] = {
+ [DA9121_IDX_BUCK1] = { .name = "buck1" },
+ [DA9121_IDX_BUCK2] = { .name = "buck2" },
+};
+
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
#define DA9121_STEP_MV 10
@@ -49,9 +54,11 @@ struct da9121 {
+ 1 + DA9121_MIN_SEL)
static const struct regulator_desc da9121_reg = {
+ .id = DA9121_IDX_BUCK1,
.name = "da9121",
.of_match = "buck1",
.owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -68,6 +75,105 @@ struct da9121 {
.enable_time = 20,
};
+static const struct regulator_desc da9220_reg[2] = {
+ {
+ .id = DA9121_IDX_BUCK1,
+ .name = "DA9220/DA9132 BUCK1",
+ .of_match = "buck1",
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA9121_N_VOLTAGES,
+ .min_uV = DA9121_MIN_MV * 1000,
+ .uV_step = DA9121_STEP_MV * 1000,
+ .linear_min_sel = DA9121_MIN_SEL,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ },
+ {
+ .id = DA9121_IDX_BUCK2,
+ .name = "DA9220/DA9132 BUCK2",
+ .of_match = "buck2",
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA9121_N_VOLTAGES,
+ .min_uV = DA9121_MIN_MV * 1000,
+ .uV_step = DA9121_STEP_MV * 1000,
+ .linear_min_sel = DA9121_MIN_SEL,
+ .enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ }
+};
+
+static const struct regulator_desc da9122_reg[2] = {
+ {
+ .id = DA9121_IDX_BUCK1,
+ .name = "DA9122/DA9131 BUCK1",
+ .of_match = "buck1",
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA9121_N_VOLTAGES,
+ .min_uV = DA9121_MIN_MV * 1000,
+ .uV_step = DA9121_STEP_MV * 1000,
+ .linear_min_sel = DA9121_MIN_SEL,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ },
+ {
+ .id = DA9121_IDX_BUCK2,
+ .name = "DA9122/DA9131 BUCK2",
+ .of_match = "buck2",
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA9121_N_VOLTAGES,
+ .min_uV = DA9121_MIN_MV * 1000,
+ .uV_step = DA9121_STEP_MV * 1000,
+ .linear_min_sel = DA9121_MIN_SEL,
+ .enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+ }
+};
+
+static const struct regulator_desc da9217_reg = {
+ .id = DA9121_IDX_BUCK1,
+ .name = "DA9217 BUCK1",
+ .of_match = "buck1",
+ .owner = THIS_MODULE,
+ .regulators_node = of_match_ptr("regulators"),
+ .ops = &da9121_buck_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = DA9121_N_VOLTAGES,
+ .min_uV = DA9121_MIN_MV * 1000,
+ .uV_step = DA9121_STEP_MV * 1000,
+ .linear_min_sel = DA9121_MIN_SEL,
+ .enable_reg = DA9121_REG_BUCK_BUCK1_0,
+ .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
+ .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
+ .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
+};
+
+static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = {
+ [DA9121_TYPE_DA9121_DA9130] = { &da9121_reg, NULL },
+ [DA9121_TYPE_DA9220_DA9132] = { &da9220_reg[0], &da9220_reg[1] },
+ [DA9121_TYPE_DA9122_DA9131] = { &da9122_reg[0], &da9122_reg[1] },
+ [DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
+};
+
/* DA9121 chip register model */
static const struct regmap_range da9121_1ch_readable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
@@ -255,6 +361,10 @@ static int da9121_assign_chip_model(struct i2c_client *i2c,
break;
}
+ /* Set these up for of_regulator_match call which may want .of_map_modes */
+ da9121_matches[0].desc = local_da9121_regulators[chip->variant_id][0];
+ da9121_matches[1].desc = local_da9121_regulators[chip->variant_id][1];
+
chip->regmap = devm_regmap_init_i2c(i2c, regmap);
if (IS_ERR(chip->regmap)) {
ret = PTR_ERR(chip->regmap);
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 5/9] regulator: da9121: Add support for device variants via devicetree
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (3 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 4/9] regulator: da9121: Add device variant descriptors Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 6/9] regulator: da9121: Update registration to support multiple buck variants Adam Ward
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Add devicetree configuration and device variant parameters. Use the latter
to enable the check and use of parameters specific to dual buck variants.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 119 +++++++++++++++++++++++++++++++++++
include/linux/regulator/da9121.h | 11 ++++
2 files changed, 130 insertions(+)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index a717e2b..1f74371 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -14,6 +14,7 @@
// Copyright (C) 2020 Dialog Semiconductor
#include <linux/of_device.h>
+#include <linux/of_gpio.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
@@ -28,10 +29,67 @@
/* Chip data */
struct da9121 {
struct device *dev;
+ struct da9121_pdata *pdata;
struct regmap *regmap;
int variant_id;
};
+/* Define ranges for different variants, enabling translation to/from
+ * registers. Maximums give scope to allow for transients.
+ */
+struct da9121_range {
+ int val_min;
+ int val_max;
+ int val_stp;
+ int reg_min;
+ int reg_max;
+};
+
+struct da9121_range da9121_10A_2phase_current = {
+ .val_min = 7000000,
+ .val_max = 20000000,
+ .val_stp = 1000000,
+ .reg_min = 1,
+ .reg_max = 14,
+};
+
+struct da9121_range da9121_6A_2phase_current = {
+ .val_min = 7000000,
+ .val_max = 12000000,
+ .val_stp = 1000000,
+ .reg_min = 1,
+ .reg_max = 6,
+};
+
+struct da9121_range da9121_5A_1phase_current = {
+ .val_min = 3500000,
+ .val_max = 10000000,
+ .val_stp = 500000,
+ .reg_min = 1,
+ .reg_max = 14,
+};
+
+struct da9121_range da9121_3A_1phase_current = {
+ .val_min = 3500000,
+ .val_max = 6000000,
+ .val_stp = 500000,
+ .reg_min = 1,
+ .reg_max = 6,
+};
+
+struct da9121_variant_info {
+ int num_bucks;
+ int num_phases;
+ struct da9121_range *current_range;
+};
+
+static const struct da9121_variant_info variant_parameters[] = {
+ { 1, 2, &da9121_10A_2phase_current }, //DA9121_TYPE_DA9121_DA9130
+ { 2, 1, &da9121_3A_1phase_current }, //DA9121_TYPE_DA9220_DA9132
+ { 2, 1, &da9121_5A_1phase_current }, //DA9121_TYPE_DA9122_DA9131
+ { 1, 2, &da9121_6A_2phase_current }, //DA9121_TYPE_DA9217
+};
+
static const struct regulator_ops da9121_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
@@ -46,6 +104,59 @@ struct da9121 {
[DA9121_IDX_BUCK2] = { .name = "buck2" },
};
+static int da9121_of_parse_cb(struct device_node *np,
+ const struct regulator_desc *desc,
+ struct regulator_config *config)
+{
+ struct da9121 *chip = config->driver_data;
+ struct da9121_pdata *pdata;
+ struct gpio_desc *ena_gpiod;
+
+ if (chip->pdata == NULL) {
+ pdata = devm_kzalloc(chip->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ } else {
+ pdata = chip->pdata;
+ }
+
+ pdata->num_buck++;
+
+ if (pdata->num_buck > variant_parameters[chip->variant_id].num_bucks) {
+ dev_err(chip->dev, "Error: excessive regulators for device\n");
+ return -ENODEV;
+ }
+
+ ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0,
+ GPIOD_OUT_HIGH |
+ GPIOD_FLAGS_BIT_NONEXCLUSIVE,
+ "da9121-enable");
+ if (!IS_ERR(ena_gpiod))
+ config->ena_gpiod = ena_gpiod;
+
+ if (variant_parameters[chip->variant_id].num_bucks == 2) {
+ uint32_t ripple_cancel;
+ uint32_t ripple_reg;
+ int ret;
+
+ if (of_property_read_u32(da9121_matches[pdata->num_buck].of_node,
+ "dlg,ripple-cancel", &ripple_cancel)) {
+ if (pdata->num_buck > 1)
+ ripple_reg = DA9xxx_REG_BUCK_BUCK2_7;
+ else
+ ripple_reg = DA9121_REG_BUCK_BUCK1_7;
+
+ ret = regmap_update_bits(chip->regmap, ripple_reg,
+ DA9xxx_MASK_BUCK_BUCKx_7_CHx_RIPPLE_CANCEL,
+ ripple_cancel);
+ if (ret < 0)
+ dev_err(chip->dev, "Cannot set ripple mode, err: %d\n", ret);
+ }
+ }
+
+ return 0;
+}
+
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
#define DA9121_STEP_MV 10
@@ -57,6 +168,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK1,
.name = "da9121",
.of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -80,6 +192,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK1,
.name = "DA9220/DA9132 BUCK1",
.of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -97,6 +210,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK2,
.name = "DA9220/DA9132 BUCK2",
.of_match = "buck2",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -117,6 +231,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK1,
.name = "DA9122/DA9131 BUCK1",
.of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -134,6 +249,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK2,
.name = "DA9122/DA9131 BUCK2",
.of_match = "buck2",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -153,6 +269,7 @@ struct da9121 {
.id = DA9121_IDX_BUCK1,
.name = "DA9217 BUCK1",
.of_match = "buck1",
+ .of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.ops = &da9121_buck_ops,
@@ -415,6 +532,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
goto error;
}
+ chip->pdata = i2c->dev.platform_data;
chip->variant_id = da9121_of_get_id(&i2c->dev);
ret = da9121_assign_chip_model(i2c, chip);
@@ -422,6 +540,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
goto error;
config.dev = &i2c->dev;
+ config.driver_data = chip;
config.of_node = dev->of_node;
config.regmap = chip->regmap;
diff --git a/include/linux/regulator/da9121.h b/include/linux/regulator/da9121.h
index c31180d..62d9d257 100644
--- a/include/linux/regulator/da9121.h
+++ b/include/linux/regulator/da9121.h
@@ -16,10 +16,21 @@
#ifndef __LINUX_REGULATOR_DA9121_H
#define __LINUX_REGULATOR_DA9121_H
+#include <linux/regulator/machine.h>
+
+struct gpio_desc;
+
enum {
DA9121_IDX_BUCK1,
DA9121_IDX_BUCK2,
DA9121_IDX_MAX
};
+struct da9121_pdata {
+ int num_buck;
+ struct gpio_desc *gpiod_ren[DA9121_IDX_MAX];
+ struct device_node *reg_node[DA9121_IDX_MAX];
+ struct regulator_init_data *init_data[DA9121_IDX_MAX];
+};
+
#endif
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 6/9] regulator: da9121: Update registration to support multiple buck variants
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (4 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 5/9] regulator: da9121: Add support for device variants via devicetree Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 7/9] regulator: da9121: add current support Adam Ward
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Add function which iterates the regulator descriptors for the confirmed
variant ID and registers each buck.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 44 +++++++++++++++++++++++++-----------
1 file changed, 31 insertions(+), 13 deletions(-)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 1f74371..6c82441 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -31,6 +31,7 @@ struct da9121 {
struct device *dev;
struct da9121_pdata *pdata;
struct regmap *regmap;
+ struct regulator_dev *rdev[DA9121_IDX_MAX];
int variant_id;
};
@@ -291,6 +292,35 @@ static int da9121_of_parse_cb(struct device_node *np,
[DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
};
+static int da9121_set_regulator_config(struct da9121 *chip)
+{
+ struct regulator_config config = { };
+ unsigned int max_matches = variant_parameters[chip->variant_id].num_bucks;
+ int ret = 0;
+ int i;
+
+ for (i = 0; i < max_matches; i++) {
+ const struct regulator_desc *regl_desc =
+ local_da9121_regulators[chip->variant_id][i];
+
+ config.dev = chip->dev;
+ config.driver_data = chip;
+ config.regmap = chip->regmap;
+
+ chip->rdev[i] = devm_regulator_register(chip->dev,
+ regl_desc, &config);
+ if (IS_ERR(chip->rdev[i])) {
+ dev_err(chip->dev, "Failed to register regulator %s, %d/%d\n",
+ regl_desc->name, (i+1), max_matches);
+ ret = PTR_ERR(chip->rdev[i]);
+ goto error;
+ }
+ }
+
+error:
+ return ret;
+}
+
/* DA9121 chip register model */
static const struct regmap_range da9121_1ch_readable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
@@ -522,9 +552,6 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
{
struct da9121 *chip;
int ret = 0;
- struct device *dev = &i2c->dev;
- struct regulator_config config = {};
- struct regulator_dev *rdev;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
if (!chip) {
@@ -539,16 +566,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
if (ret < 0)
goto error;
- config.dev = &i2c->dev;
- config.driver_data = chip;
- config.of_node = dev->of_node;
- config.regmap = chip->regmap;
-
- rdev = devm_regulator_register(&i2c->dev, &da9121_reg, &config);
- if (IS_ERR(rdev)) {
- dev_err(&i2c->dev, "Failed to register da9121 regulator\n");
- return PTR_ERR(rdev);
- }
+ ret = da9121_set_regulator_config(chip);
error:
return ret;
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 7/9] regulator: da9121: add current support
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (5 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 6/9] regulator: da9121: Update registration to support multiple buck variants Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 8/9] regulator: da9121: add mode support Adam Ward
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
This commit adds support for getting/setting current for all supported
variants. Limits are adjusted per variant to match HW implementation.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 113 +++++++++++++++++++++++++++++++++++
1 file changed, 113 insertions(+)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 6c82441..a69acb2 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -91,6 +91,117 @@ struct da9121_variant_info {
{ 1, 2, &da9121_6A_2phase_current }, //DA9121_TYPE_DA9217
};
+struct da9121_field {
+ unsigned int reg;
+ unsigned int msk;
+};
+
+static const struct da9121_field da9121_current_field[2] = {
+ { DA9121_REG_BUCK_BUCK1_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
+ { DA9xxx_REG_BUCK_BUCK2_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
+};
+
+static int da9121_get_current_limit(struct regulator_dev *rdev)
+{
+ struct da9121 *chip = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+ struct da9121_range *range =
+ variant_parameters[chip->variant_id].current_range;
+ unsigned int val = 0;
+ int ret = 0;
+
+ ret = regmap_read(chip->regmap, da9121_current_field[id].reg, &val);
+ if (ret < 0) {
+ dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
+ goto error;
+ }
+
+ if (val < range->reg_min) {
+ ret = -EACCES;
+ goto error;
+ }
+
+ if (val > range->reg_max) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ return range->val_min + (range->val_stp * (val - range->reg_min));
+error:
+ return ret;
+}
+
+static int da9121_ceiling_selector(struct regulator_dev *rdev,
+ int min, int max,
+ unsigned int *selector)
+{
+ struct da9121 *chip = rdev_get_drvdata(rdev);
+ struct da9121_range *range =
+ variant_parameters[chip->variant_id].current_range;
+ unsigned int level;
+ unsigned int i = 0;
+ unsigned int sel = 0;
+ int ret = 0;
+
+ if (range->val_min > max || range->val_max < min) {
+ dev_err(chip->dev,
+ "Requested current out of regulator capability\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ level = range->val_max;
+ for (i = range->reg_max; i >= range->reg_min; i--) {
+ if (level <= max) {
+ sel = i;
+ break;
+ }
+ level -= range->val_stp;
+ }
+
+ if (level < min) {
+ dev_err(chip->dev,
+ "Best match falls below minimum requested current\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ *selector = sel;
+error:
+ return ret;
+}
+
+static int da9121_set_current_limit(struct regulator_dev *rdev,
+ int min_ua, int max_ua)
+{
+ struct da9121 *chip = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+ struct da9121_range *range =
+ variant_parameters[chip->variant_id].current_range;
+ unsigned int sel = 0;
+ int ret = 0;
+
+ if (min_ua < range->val_min ||
+ max_ua > range->val_max) {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel);
+ if (ret < 0)
+ goto error;
+
+ ret = regmap_update_bits(chip->regmap,
+ da9121_current_field[id].reg,
+ da9121_current_field[id].msk,
+ (unsigned int)sel);
+ if (ret < 0)
+ dev_err(chip->dev, "Cannot update BUCK current limit, err: %d\n", ret);
+
+error:
+ return ret;
+}
+
static const struct regulator_ops da9121_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
@@ -98,6 +209,8 @@ struct da9121_variant_info {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
+ .get_current_limit = da9121_get_current_limit,
+ .set_current_limit = da9121_set_current_limit,
};
static struct of_regulator_match da9121_matches[] = {
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 8/9] regulator: da9121: add mode support
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (6 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 7/9] regulator: da9121: add current support Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 15:42 ` [PATCH V2 9/9] regulator: da9121: add interrupt support Adam Ward
2020-11-30 16:45 ` [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Mark Brown
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Adds get/set for mode, and mapping from REGULATOR_MODE_* to select
PFM/PWM/Auto operation.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 74 ++++++++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index a69acb2..8e50f55 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -101,6 +101,11 @@ struct da9121_field {
{ DA9xxx_REG_BUCK_BUCK2_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
};
+static const struct da9121_field da9121_mode_field[2] = {
+ { DA9121_REG_BUCK_BUCK1_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
+ { DA9xxx_REG_BUCK_BUCK2_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
+};
+
static int da9121_get_current_limit(struct regulator_dev *rdev)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
@@ -202,6 +207,67 @@ static int da9121_set_current_limit(struct regulator_dev *rdev,
return ret;
}
+static unsigned int da9121_map_mode(unsigned int mode)
+{
+ switch (mode) {
+ case DA9121_BUCK_MODE_FORCE_PWM:
+ return REGULATOR_MODE_FAST;
+ case DA9121_BUCK_MODE_FORCE_PWM_SHEDDING:
+ return REGULATOR_MODE_NORMAL;
+ case DA9121_BUCK_MODE_AUTO:
+ return REGULATOR_MODE_IDLE;
+ case DA9121_BUCK_MODE_FORCE_PFM:
+ return REGULATOR_MODE_STANDBY;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int da9121_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+ struct da9121 *chip = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+ unsigned int val;
+
+ switch (mode) {
+ case REGULATOR_MODE_FAST:
+ val = DA9121_BUCK_MODE_FORCE_PWM;
+ break;
+ case REGULATOR_MODE_NORMAL:
+ val = DA9121_BUCK_MODE_FORCE_PWM_SHEDDING;
+ break;
+ case REGULATOR_MODE_IDLE:
+ val = DA9121_BUCK_MODE_AUTO;
+ break;
+ case REGULATOR_MODE_STANDBY:
+ val = DA9121_BUCK_MODE_FORCE_PFM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(chip->regmap,
+ da9121_mode_field[id].reg,
+ da9121_mode_field[id].msk,
+ val);
+}
+
+static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev)
+{
+ struct da9121 *chip = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+ unsigned int val;
+ int ret = 0;
+
+ ret = regmap_read(chip->regmap, da9121_mode_field[id].reg, &val);
+ if (ret < 0) {
+ dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
+ return -EINVAL;
+ }
+
+ return da9121_map_mode(val & da9121_mode_field[id].msk);
+}
+
static const struct regulator_ops da9121_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
@@ -211,6 +277,8 @@ static int da9121_set_current_limit(struct regulator_dev *rdev,
.list_voltage = regulator_list_voltage_linear,
.get_current_limit = da9121_get_current_limit,
.set_current_limit = da9121_set_current_limit,
+ .set_mode = da9121_buck_set_mode,
+ .get_mode = da9121_buck_get_mode,
};
static struct of_regulator_match da9121_matches[] = {
@@ -285,6 +353,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -309,6 +378,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -327,6 +397,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -348,6 +419,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -366,6 +438,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
@@ -386,6 +459,7 @@ static int da9121_of_parse_cb(struct device_node *np,
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
+ .of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* [PATCH V2 9/9] regulator: da9121: add interrupt support
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (7 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 8/9] regulator: da9121: add mode support Adam Ward
@ 2020-11-30 15:42 ` Adam Ward
2020-11-30 16:45 ` [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Mark Brown
9 siblings, 0 replies; 11+ messages in thread
From: Adam Ward @ 2020-11-30 15:42 UTC (permalink / raw)
To: Mark Brown, Rob Herring
Cc: Liam Girdwood, Vincent Whitchurch, linux-kernel, devicetree,
Support Opensource
Adds interrupt handler for variants, and notifications for events; over
temperature/voltage/current. Because the IRQs are triggered by persisting
status, they must be masked and the status polled until clear, before the
IRQ can be enabled again.
Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com>
---
drivers/regulator/da9121-regulator.c | 286 +++++++++++++++++++++++++++++++++++
1 file changed, 286 insertions(+)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 8e50f55..d9a8a4b 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -23,15 +23,21 @@
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/regulator/da9121.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
#include "da9121-regulator.h"
/* Chip data */
struct da9121 {
struct device *dev;
+ struct delayed_work work;
struct da9121_pdata *pdata;
struct regmap *regmap;
struct regulator_dev *rdev[DA9121_IDX_MAX];
+ unsigned int persistent[2];
+ unsigned int passive_delay;
+ int chip_irq;
int variant_id;
};
@@ -106,6 +112,59 @@ struct da9121_field {
{ DA9xxx_REG_BUCK_BUCK2_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
};
+struct status_event_data {
+ int buck_id; /* 0=core, 1/2-buck */
+ int reg_index; /* index for status/event/mask register selection */
+ int status_bit; /* bit masks... */
+ int event_bit;
+ int mask_bit;
+ unsigned long notification; /* Notification for status inception */
+ char *warn; /* if NULL, notify - otherwise dev_warn this string */
+};
+
+#define DA9121_STATUS(id, bank, name, notification, warning) \
+ { id, bank, \
+ DA9121_MASK_SYS_STATUS_##bank##_##name, \
+ DA9121_MASK_SYS_EVENT_##bank##_E_##name, \
+ DA9121_MASK_SYS_MASK_##bank##_M_##name, \
+ notification, warning }
+
+/* For second buck related event bits that are specific to DA9122, DA9220 variants */
+#define DA9xxx_STATUS(id, bank, name, notification, warning) \
+ { id, bank, \
+ DA9xxx_MASK_SYS_STATUS_##bank##_##name, \
+ DA9xxx_MASK_SYS_EVENT_##bank##_E_##name, \
+ DA9xxx_MASK_SYS_MASK_##bank##_M_##name, \
+ notification, warning }
+
+/* The status signals that may need servicing, depending on device variant.
+ * After assertion, they persist; so event is notified, the IRQ disabled,
+ * and status polled until clear again and IRQ is reenabled.
+ *
+ * SG/PG1/PG2 should be set when device first powers up and should never
+ * re-occur. When this driver starts, it is expected that these will have
+ * self-cleared for when the IRQs are enabled, so these should never be seen.
+ * If seen, the implication is that the device has reset.
+ *
+ * GPIO0/1/2 are not configured for use by default, so should not be seen.
+ */
+const struct status_event_data status_event_handling[] = {
+ DA9xxx_STATUS(0, 0, SG, 0, "Handled E_SG\n"),
+ DA9121_STATUS(0, 0, TEMP_CRIT, (REGULATOR_EVENT_OVER_TEMP|REGULATOR_EVENT_DISABLE), NULL),
+ DA9121_STATUS(0, 0, TEMP_WARN, REGULATOR_EVENT_OVER_TEMP, NULL),
+ DA9121_STATUS(1, 1, PG1, 0, "Handled E_PG1\n"),
+ DA9121_STATUS(1, 1, OV1, REGULATOR_EVENT_REGULATION_OUT, NULL),
+ DA9121_STATUS(1, 1, UV1, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
+ DA9121_STATUS(1, 1, OC1, REGULATOR_EVENT_OVER_CURRENT, NULL),
+ DA9xxx_STATUS(2, 1, PG2, 0, "Handled E_PG2\n"),
+ DA9xxx_STATUS(2, 1, OV2, REGULATOR_EVENT_REGULATION_OUT, NULL),
+ DA9xxx_STATUS(2, 1, UV2, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
+ DA9xxx_STATUS(2, 1, OC2, REGULATOR_EVENT_OVER_CURRENT, NULL),
+ DA9121_STATUS(0, 2, GPIO0, 0, "Handled E_GPIO0\n"),
+ DA9121_STATUS(0, 2, GPIO1, 0, "Handled E_GPIO1\n"),
+ DA9121_STATUS(0, 2, GPIO2, 0, "Handled E_GPIO2\n"),
+};
+
static int da9121_get_current_limit(struct regulator_dev *rdev)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
@@ -479,6 +538,157 @@ static int da9121_of_parse_cb(struct device_node *np,
[DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
};
+static void da9121_status_poll_on(struct work_struct *work)
+{
+ struct da9121 *chip = container_of(work, struct da9121, work.work);
+ int status[3] = {0};
+ int clear[3] = {0};
+ unsigned long delay;
+ int i;
+ int ret;
+
+ ret = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_STATUS_0, status, 2);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Failed to read STATUS registers: %d\n", ret);
+ goto error;
+ }
+
+ /* Possible events are tested to be within range for the variant, potentially
+ * masked by the IRQ handler (not just warned about), as having been masked,
+ * and the respective state cleared - then flagged to unmask for next IRQ.
+ */
+ for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
+ const struct status_event_data *item = &status_event_handling[i];
+ int reg_idx = item->reg_index;
+ bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
+ bool supported = (item->warn == NULL);
+ bool persisting = (chip->persistent[reg_idx] & item->event_bit);
+ bool now_cleared = !(status[reg_idx] & item->status_bit);
+
+ if (relevant && supported && persisting && now_cleared) {
+ clear[reg_idx] |= item->mask_bit;
+ chip->persistent[reg_idx] &= ~item->event_bit;
+ }
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (clear[i]) {
+ unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
+ unsigned int mbit = clear[i];
+
+ ret = regmap_update_bits(chip->regmap, reg, mbit, 0);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Failed to unmask 0x%02x %d\n",
+ reg, ret);
+ goto error;
+ }
+ }
+ }
+
+ if (chip->persistent[0] | chip->persistent[1]) {
+ delay = msecs_to_jiffies(chip->passive_delay);
+ queue_delayed_work(system_freezable_wq, &chip->work, delay);
+ }
+
+error:
+ return;
+}
+
+static irqreturn_t da9121_irq_handler(int irq, void *data)
+{
+ struct da9121 *chip = data;
+ struct regulator_dev *rdev;
+ int event[3] = {0};
+ int handled[3] = {0};
+ int mask[3] = {0};
+ int ret = IRQ_NONE;
+ int i;
+ int err;
+
+ err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_EVENT_0, event, 3);
+ if (err < 0) {
+ dev_err(chip->dev, "Failed to read EVENT registers %d\n", err);
+ ret = IRQ_NONE;
+ goto error;
+ }
+
+ err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_MASK_0, mask, 3);
+ if (err < 0) {
+ dev_err(chip->dev,
+ "Failed to read MASK registers: %d\n", ret);
+ ret = IRQ_NONE;
+ goto error;
+ }
+
+ rdev = chip->rdev[DA9121_IDX_BUCK1];
+
+ /* Possible events are tested to be within range for the variant, currently
+ * enabled, and having triggered this IRQ. The event may then be notified,
+ * or a warning given for unexpected events - those from device POR, and
+ * currently unsupported GPIO configurations.
+ */
+ for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
+ const struct status_event_data *item = &status_event_handling[i];
+ int reg_idx = item->reg_index;
+ bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
+ bool enabled = !(mask[reg_idx] & item->mask_bit);
+ bool active = (event[reg_idx] & item->event_bit);
+ bool notify = (item->warn == NULL);
+
+ if (relevant && enabled && active) {
+ if (notify) {
+ chip->persistent[reg_idx] |= item->event_bit;
+ regulator_notifier_call_chain(rdev, item->notification, NULL);
+ } else {
+ dev_warn(chip->dev, item->warn);
+ handled[reg_idx] |= item->event_bit;
+ ret = IRQ_HANDLED;
+ }
+ }
+ }
+
+ for (i = 0; i < 3; i++) {
+ if (event[i] != handled[i]) {
+ dev_warn(chip->dev,
+ "Unhandled event(s) in bank%d 0x%02x\n", i,
+ event[i] ^ handled[i]);
+ }
+ }
+
+ /* Mask the interrupts for persistent events OV, OC, UV, WARN, CRIT */
+ for (i = 0; i < 2; i++) {
+ if (handled[i]) {
+ unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
+ unsigned int mbit = handled[i];
+
+ err = regmap_update_bits(chip->regmap, reg, mbit, mbit);
+ if (err < 0) {
+ dev_err(chip->dev,
+ "Failed to mask 0x%02x interrupt %d\n",
+ reg, err);
+ ret = IRQ_NONE;
+ goto error;
+ }
+ }
+ }
+
+ /* clear the events */
+ if (handled[0] | handled[1] | handled[2]) {
+ err = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_EVENT_0, handled, 3);
+ if (err < 0) {
+ dev_err(chip->dev, "Fail to write EVENTs %d\n", err);
+ ret = IRQ_NONE;
+ goto error;
+ }
+ }
+
+ queue_delayed_work(system_freezable_wq, &chip->work, 0);
+error:
+ return ret;
+}
+
static int da9121_set_regulator_config(struct da9121 *chip)
{
struct regulator_config config = { };
@@ -711,6 +921,56 @@ static int da9121_assign_chip_model(struct i2c_client *i2c,
return ret;
}
+static int da9121_config_irq(struct i2c_client *i2c,
+ struct da9121 *chip)
+{
+ unsigned int p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
+ const int mask_all[4] = { 0, 0, 0xFF, 0xFF };
+ int ret = 0;
+
+ chip->chip_irq = i2c->irq;
+
+ if (chip->chip_irq != 0) {
+ if (!of_property_read_u32(chip->dev->of_node,
+ "dlg,irq-polling-delay-passive-ms",
+ &p_delay)) {
+ if (p_delay < DA9121_MIN_POLLING_PERIOD_MS ||
+ p_delay > DA9121_MAX_POLLING_PERIOD_MS) {
+ dev_warn(chip->dev,
+ "Out-of-range polling period %d ms\n",
+ p_delay);
+ p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
+ }
+ }
+
+ chip->passive_delay = p_delay;
+
+ ret = devm_request_threaded_irq(chip->dev,
+ chip->chip_irq, NULL,
+ da9121_irq_handler,
+ IRQF_TRIGGER_LOW|IRQF_ONESHOT,
+ "da9121", chip);
+ if (ret != 0) {
+ dev_err(chip->dev, "Failed IRQ request: %d\n",
+ chip->chip_irq);
+ goto error;
+ }
+
+ ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
+ if (ret != 0) {
+ dev_err(chip->dev, "Failed to set IRQ masks: %d\n",
+ ret);
+ goto error;
+ }
+
+ INIT_DELAYED_WORK(&chip->work, da9121_status_poll_on);
+ dev_info(chip->dev, "Interrupt polling period set at %d ms\n",
+ chip->passive_delay);
+ }
+error:
+ return ret;
+}
+
static const struct of_device_id da9121_dt_ids[] = {
{ .compatible = "dlg,da9121", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
{ .compatible = "dlg,da9130", .data = (void *) DA9121_TYPE_DA9121_DA9130 },
@@ -738,6 +998,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct da9121 *chip;
+ const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
int ret = 0;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
@@ -753,12 +1014,36 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
if (ret < 0)
goto error;
+ ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
+ if (ret != 0) {
+ dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
+ goto error;
+ }
+
ret = da9121_set_regulator_config(chip);
+ if (ret < 0)
+ goto error;
+
+ ret = da9121_config_irq(i2c, chip);
error:
return ret;
}
+static int da9121_i2c_remove(struct i2c_client *i2c)
+{
+ struct da9121 *chip = i2c_get_clientdata(i2c);
+ const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
+ int ret = 0;
+
+ cancel_delayed_work_sync(&chip->work);
+
+ ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
+ if (ret != 0)
+ dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
+ return ret;
+}
+
static const struct i2c_device_id da9121_i2c_id[] = {
{"da9121", DA9121_TYPE_DA9121_DA9130},
{"da9130", DA9121_TYPE_DA9121_DA9130},
@@ -777,6 +1062,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c,
.of_match_table = of_match_ptr(da9121_dt_ids),
},
.probe = da9121_i2c_probe,
+ .remove = da9121_i2c_remove,
.id_table = da9121_i2c_id,
};
--
1.9.1
^ permalink raw reply related [flat|nested] 11+ messages in thread* Re: [PATCH V2 0/9] regulator: da9121: extend support to variants, add features
2020-11-30 15:42 [PATCH V2 0/9] regulator: da9121: extend support to variants, add features Adam Ward
` (8 preceding siblings ...)
2020-11-30 15:42 ` [PATCH V2 9/9] regulator: da9121: add interrupt support Adam Ward
@ 2020-11-30 16:45 ` Mark Brown
9 siblings, 0 replies; 11+ messages in thread
From: Mark Brown @ 2020-11-30 16:45 UTC (permalink / raw)
To: Adam Ward
Cc: Rob Herring, Liam Girdwood, Vincent Whitchurch, linux-kernel,
devicetree, Support Opensource
[-- Attachment #1: Type: text/plain, Size: 609 bytes --]
On Mon, Nov 30, 2020 at 03:42:44PM +0000, Adam Ward wrote:
> regulator: da9121: add interrupt support
>
> drivers/regulator/Kconfig | 14 +-
> drivers/regulator/da9121-regulator.c | 1033 ++++++++++++++++++++++++++++++++--
> drivers/regulator/da9121-regulator.h | 291 ++++++++++
> include/linux/regulator/da9121.h | 36 ++
> 4 files changed, 1336 insertions(+), 38 deletions(-)
> create mode 100644 drivers/regulator/da9121-regulator.h
> create mode 100644 include/linux/regulator/da9121.h
This adds new compatible strings so needs to update the binding document
too.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 11+ messages in thread