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Message-ID: <fd445f9cbbdaa3fd5d7a9e59093f86e5ff7139b1.1741864404.git.mazziesaccount@gmail.com>
Date: Thu, 13 Mar 2025 13:41:47 +0200
From: Matti Vaittinen <mazziesaccount@...il.com>
To: Matti Vaittinen <mazziesaccount@...il.com>,
Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Matti Vaittinen <mazziesaccount@...il.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 05/14] mfd: rohm-bd96801: Add chip info
Prepare for adding support for BD96802 which is very similar to BD96801.
Separate chip specific data into own structure which can be picked to be
used by the device-tree.
Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
---
drivers/mfd/rohm-bd96801.c | 83 ++++++++++++++++++++++++++------------
1 file changed, 57 insertions(+), 26 deletions(-)
diff --git a/drivers/mfd/rohm-bd96801.c b/drivers/mfd/rohm-bd96801.c
index 60ec8db790a7..1232f571e4b1 100644
--- a/drivers/mfd/rohm-bd96801.c
+++ b/drivers/mfd/rohm-bd96801.c
@@ -40,7 +40,21 @@
#include <linux/mfd/rohm-bd96801.h>
#include <linux/mfd/rohm-generic.h>
-static const struct resource regulator_errb_irqs[] = {
+struct bd968xx_chip_data {
+ const struct resource *errb_irqs;
+ const struct resource *intb_irqs;
+ int num_errb_irqs;
+ int num_intb_irqs;
+ const struct regmap_irq_chip *errb_irq_chip;
+ const struct regmap_irq_chip *intb_irq_chip;
+ const struct regmap_config *regmap_config;
+ struct mfd_cell *cells;
+ int num_cells;
+ int unlock_reg;
+ int unlock_val;
+};
+
+static const struct resource bd96801_reg_errb_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD96801_OTP_ERR_STAT, "bd96801-otp-err"),
DEFINE_RES_IRQ_NAMED(BD96801_DBIST_ERR_STAT, "bd96801-dbist-err"),
DEFINE_RES_IRQ_NAMED(BD96801_EEP_ERR_STAT, "bd96801-eep-err"),
@@ -98,7 +112,7 @@ static const struct resource regulator_errb_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD96801_LDO7_SHDN_ERR_STAT, "bd96801-ldo7-shdn-err"),
};
-static const struct resource regulator_intb_irqs[] = {
+static const struct resource bd96801_reg_intb_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD96801_TW_STAT, "bd96801-core-thermal"),
DEFINE_RES_IRQ_NAMED(BD96801_BUCK1_OCPH_STAT, "bd96801-buck1-overcurr-h"),
@@ -345,18 +359,37 @@ static const struct regmap_config bd96801_regmap_config = {
.cache_type = REGCACHE_MAPLE,
};
+static const struct bd968xx_chip_data bd96801_chip_data = {
+ .errb_irqs = bd96801_reg_errb_irqs,
+ .intb_irqs = bd96801_reg_intb_irqs,
+ .num_errb_irqs = ARRAY_SIZE(bd96801_reg_errb_irqs),
+ .num_intb_irqs = ARRAY_SIZE(bd96801_reg_intb_irqs),
+ .errb_irq_chip = &bd96801_irq_chip_errb,
+ .intb_irq_chip = &bd96801_irq_chip_intb,
+ .regmap_config = &bd96801_regmap_config,
+ .cells = bd96801_cells,
+ .num_cells = ARRAY_SIZE(bd96801_cells),
+ .unlock_reg = BD96801_LOCK_REG,
+ .unlock_val = BD96801_UNLOCK,
+};
+
static int bd96801_i2c_probe(struct i2c_client *i2c)
{
struct regmap_irq_chip_data *intb_irq_data, *errb_irq_data;
struct irq_domain *intb_domain, *errb_domain;
+ static const struct bd968xx_chip_data *cd;
const struct fwnode_handle *fwnode;
struct resource *regulator_res;
struct resource wdg_irq;
struct regmap *regmap;
- int intb_irq, errb_irq, num_intb, num_errb = 0;
+ int intb_irq, errb_irq, num_errb = 0;
int num_regu_irqs, wdg_irq_no;
int i, ret;
+ cd = device_get_match_data(&i2c->dev);
+ if (!cd)
+ return -ENODEV;
+
fwnode = dev_fwnode(&i2c->dev);
if (!fwnode)
return dev_err_probe(&i2c->dev, -EINVAL, "Failed to find fwnode\n");
@@ -365,34 +398,32 @@ static int bd96801_i2c_probe(struct i2c_client *i2c)
if (intb_irq < 0)
return dev_err_probe(&i2c->dev, intb_irq, "INTB IRQ not configured\n");
- num_intb = ARRAY_SIZE(regulator_intb_irqs);
-
/* ERRB may be omitted if processor is powered by the PMIC */
errb_irq = fwnode_irq_get_byname(fwnode, "errb");
- if (errb_irq < 0)
- errb_irq = 0;
+ if (errb_irq == -EPROBE_DEFER)
+ return errb_irq;
- if (errb_irq)
- num_errb = ARRAY_SIZE(regulator_errb_irqs);
+ if (errb_irq > 0)
+ num_errb = cd->num_errb_irqs;
- num_regu_irqs = num_intb + num_errb;
+ num_regu_irqs = cd->num_intb_irqs + num_errb;
regulator_res = devm_kcalloc(&i2c->dev, num_regu_irqs,
sizeof(*regulator_res), GFP_KERNEL);
if (!regulator_res)
return -ENOMEM;
- regmap = devm_regmap_init_i2c(i2c, &bd96801_regmap_config);
+ regmap = devm_regmap_init_i2c(i2c, cd->regmap_config);
if (IS_ERR(regmap))
return dev_err_probe(&i2c->dev, PTR_ERR(regmap),
"Regmap initialization failed\n");
- ret = regmap_write(regmap, BD96801_LOCK_REG, BD96801_UNLOCK);
+ ret = regmap_write(regmap, cd->unlock_reg, cd->unlock_val);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Failed to unlock PMIC\n");
ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, intb_irq,
- IRQF_ONESHOT, 0, &bd96801_irq_chip_intb,
+ IRQF_ONESHOT, 0, cd->intb_irq_chip,
&intb_irq_data);
if (ret)
return dev_err_probe(&i2c->dev, ret, "Failed to add INTB IRQ chip\n");
@@ -404,24 +435,25 @@ static int bd96801_i2c_probe(struct i2c_client *i2c)
* has two domains so we do IRQ mapping here and provide the
* already mapped IRQ numbers to sub-devices.
*/
- for (i = 0; i < num_intb; i++) {
+ for (i = 0; i < cd->num_intb_irqs; i++) {
struct resource *res = ®ulator_res[i];
- *res = regulator_intb_irqs[i];
+ *res = cd->intb_irqs[i];
res->start = res->end = irq_create_mapping(intb_domain,
res->start);
}
wdg_irq_no = irq_create_mapping(intb_domain, BD96801_WDT_ERR_STAT);
wdg_irq = DEFINE_RES_IRQ_NAMED(wdg_irq_no, "bd96801-wdg");
- bd96801_cells[WDG_CELL].resources = &wdg_irq;
- bd96801_cells[WDG_CELL].num_resources = 1;
+
+ cd->cells[WDG_CELL].resources = &wdg_irq;
+ cd->cells[WDG_CELL].num_resources = 1;
if (!num_errb)
goto skip_errb;
ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, errb_irq, IRQF_ONESHOT,
- 0, &bd96801_irq_chip_errb, &errb_irq_data);
+ 0, cd->errb_irq_chip, &errb_irq_data);
if (ret)
return dev_err_probe(&i2c->dev, ret,
"Failed to add ERRB IRQ chip\n");
@@ -429,18 +461,17 @@ static int bd96801_i2c_probe(struct i2c_client *i2c)
errb_domain = regmap_irq_get_domain(errb_irq_data);
for (i = 0; i < num_errb; i++) {
- struct resource *res = ®ulator_res[num_intb + i];
+ struct resource *res = ®ulator_res[cd->num_intb_irqs + i];
- *res = regulator_errb_irqs[i];
+ *res = cd->errb_irqs[i];
res->start = res->end = irq_create_mapping(errb_domain, res->start);
}
skip_errb:
- bd96801_cells[REGULATOR_CELL].resources = regulator_res;
- bd96801_cells[REGULATOR_CELL].num_resources = num_regu_irqs;
-
- ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, bd96801_cells,
- ARRAY_SIZE(bd96801_cells), NULL, 0, NULL);
+ cd->cells[REGULATOR_CELL].resources = regulator_res;
+ cd->cells[REGULATOR_CELL].num_resources = num_regu_irqs;
+ ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
+ cd->cells, cd->num_cells, NULL, 0, NULL);
if (ret)
dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
@@ -448,7 +479,7 @@ static int bd96801_i2c_probe(struct i2c_client *i2c)
}
static const struct of_device_id bd96801_of_match[] = {
- { .compatible = "rohm,bd96801", },
+ { .compatible = "rohm,bd96801", .data = &bd96801_chip_data, },
{ }
};
MODULE_DEVICE_TABLE(of, bd96801_of_match);
--
2.48.1
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