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Message-ID: <680b4d5659971cc4f6e1a6878837c2ce49962a7c.1546591275.git.xiaoting.liu@hxt-semitech.com>
Date: Fri, 4 Jan 2019 16:55:51 +0800
From: Xiaoting Liu <xiaoting.liu@...-semitech.com>
To: <linux@...ck-us.net>, <jdelvare@...e.com>
CC: <openbmc@...ts.ozlabs.org>, <linux-hwmon@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
Xiaoting Liu <xiaoting.liu@...-semitech.com>,
Shunyong Yang <shunyong.yang@...-semitech.com>
Subject: [PATCH 1/4] pmbus: associate PMBUS_SKIP_STATUS_CHECK with driver_data
Current code compares device name with name in i2c_device_id to decide
whether PMBUS_SKIP_STATUS_CHECK should be set in pmbus_platform_data,
which makes adding new devices with PMBUS_SKIP_STATUS_CHECK should also
modify code in pmbus_probe().
This patch adds pmbus_device_info to save pages and flags. Its pointer
is put in driver_data of i2c_device_id, which makes adding new device
more straightforward.
Signed-off-by: Shunyong Yang <shunyong.yang@...-semitech.com>
Signed-off-by: Xiaoting Liu <xiaoting.liu@...-semitech.com>
---
drivers/hwmon/pmbus/pmbus.c | 54 +++++++++++++++++++++++++++------------------
include/linux/pmbus.h | 5 +++++
2 files changed, 37 insertions(+), 22 deletions(-)
diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index 7688dab32f6e..aa4cf9636e99 100644
--- a/drivers/hwmon/pmbus/pmbus.c
+++ b/drivers/hwmon/pmbus/pmbus.c
@@ -172,13 +172,15 @@ static int pmbus_probe(struct i2c_client *client,
struct pmbus_driver_info *info;
struct pmbus_platform_data *pdata = NULL;
struct device *dev = &client->dev;
+ struct pmbus_device_info *device_info;
info = devm_kzalloc(dev, sizeof(struct pmbus_driver_info), GFP_KERNEL);
if (!info)
return -ENOMEM;
- if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps800") ||
- !strcmp(id->name, "sgd009")) {
+ device_info = (struct pmbus_device_info *)id->driver_data;
+
+ if (device_info->flags & PMBUS_SKIP_STATUS_CHECK) {
pdata = devm_kzalloc(dev, sizeof(struct pmbus_platform_data),
GFP_KERNEL);
if (!pdata)
@@ -187,36 +189,44 @@ static int pmbus_probe(struct i2c_client *client,
pdata->flags = PMBUS_SKIP_STATUS_CHECK;
}
- info->pages = id->driver_data;
+ info->pages = device_info->pages;
info->identify = pmbus_identify;
dev->platform_data = pdata;
return pmbus_do_probe(client, id, info);
}
+static const struct pmbus_device_info default_pmbus_info = {1, 0};
+static const struct pmbus_device_info dps460_pmbus_info = {
+ 1, PMBUS_SKIP_STATUS_CHECK};
+static const struct pmbus_device_info dps800_pmbus_info = {
+ 1, PMBUS_SKIP_STATUS_CHECK};
+static const struct pmbus_device_info sgd009_pmbus_info = {
+ 1, PMBUS_SKIP_STATUS_CHECK};
+static const struct pmbus_device_info pmbus_info = {0, 0};
/*
* Use driver_data to set the number of pages supported by the chip.
*/
static const struct i2c_device_id pmbus_id[] = {
- {"adp4000", 1},
- {"bmr453", 1},
- {"bmr454", 1},
- {"dps460", 1},
- {"dps800", 1},
- {"mdt040", 1},
- {"ncp4200", 1},
- {"ncp4208", 1},
- {"pdt003", 1},
- {"pdt006", 1},
- {"pdt012", 1},
- {"pmbus", 0},
- {"sgd009", 1},
- {"tps40400", 1},
- {"tps544b20", 1},
- {"tps544b25", 1},
- {"tps544c20", 1},
- {"tps544c25", 1},
- {"udt020", 1},
+ {"adp4000", (kernel_ulong_t)&default_pmbus_info},
+ {"bmr453", (kernel_ulong_t)&default_pmbus_info},
+ {"bmr454", (kernel_ulong_t)&default_pmbus_info},
+ {"dps460", (kernel_ulong_t)&dps460_pmbus_info},
+ {"dps800", (kernel_ulong_t)&dps800_pmbus_info},
+ {"mdt040", (kernel_ulong_t)&default_pmbus_info},
+ {"ncp4200", (kernel_ulong_t)&default_pmbus_info},
+ {"ncp4208", (kernel_ulong_t)&default_pmbus_info},
+ {"pdt003", (kernel_ulong_t)&default_pmbus_info},
+ {"pdt006", (kernel_ulong_t)&default_pmbus_info},
+ {"pdt012", (kernel_ulong_t)&default_pmbus_info},
+ {"pmbus", (kernel_ulong_t)&pmbus_info},
+ {"sgd009", (kernel_ulong_t)&sgd009_pmbus_info},
+ {"tps40400", (kernel_ulong_t)&default_pmbus_info},
+ {"tps544b20", (kernel_ulong_t)&default_pmbus_info},
+ {"tps544b25", (kernel_ulong_t)&default_pmbus_info},
+ {"tps544c20", (kernel_ulong_t)&default_pmbus_info},
+ {"tps544c25", (kernel_ulong_t)&default_pmbus_info},
+ {"udt020", (kernel_ulong_t)&default_pmbus_info},
{}
};
diff --git a/include/linux/pmbus.h b/include/linux/pmbus.h
index ee3c2aba2a8e..3c05edad7666 100644
--- a/include/linux/pmbus.h
+++ b/include/linux/pmbus.h
@@ -46,4 +46,9 @@ struct pmbus_platform_data {
struct regulator_init_data *reg_init_data;
};
+struct pmbus_device_info {
+ int pages;
+ u32 flags;
+};
+
#endif /* _PMBUS_H_ */
--
1.8.3.1
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