| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20211104134007.1159581-1-ferlandm@amotus.ca>
Date: Thu, 4 Nov 2021 09:40:07 -0400
From: ferlandm@...tus.ca
To: a.zummo@...ertech.it
Cc: alexandre.belloni@...tlin.com, linux-rtc@...r.kernel.org,
linux-kernel@...r.kernel.org, Marc Ferland <ferlandm@...tus.ca>
Subject: [PATCH] rtc: pcf85063: add i2c_device_id name matching support
From: Marc Ferland <ferlandm@...tus.ca>
The pcf85063 driver regsitration currently supports the "compatible"
property type of matching (for DT).
This patch adds "matching by name" support to the driver by defining
an i2c_device_id table and setting the id_table parameter in the
i2c_driver struct.
This will, for example, make the driver easier to instantiate on
systems where CONFIG_OF is not enabled (x86 in my case).
Signed-off-by: Marc Ferland <ferlandm@...tus.ca>
---
drivers/rtc/rtc-pcf85063.c | 92 +++++++++++++++++++++++++-------------
1 file changed, 61 insertions(+), 31 deletions(-)
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index 14da4ab30104..521607213ada 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -500,21 +500,56 @@ static struct clk *pcf85063_clkout_register_clk(struct pcf85063 *pcf85063)
}
#endif
-static const struct pcf85063_config pcf85063tp_config = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x0a,
+enum pcf85063_type {
+ PCF85063,
+ PCF85063TP,
+ PCF85063A,
+ RV8263,
+};
+
+static struct pcf85063_config pcf85063_cfg[] = {
+ [PCF85063] = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0a,
+ },
+ },
+ [PCF85063TP] = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0a,
+ },
+ },
+ [PCF85063A] = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ },
+ .has_alarms = 1,
+ },
+ [RV8263] = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ },
+ .has_alarms = 1,
+ .force_cap_7000 = 1,
},
};
+static const struct i2c_device_id pcf85063_ids[];
+
static int pcf85063_probe(struct i2c_client *client)
{
struct pcf85063 *pcf85063;
unsigned int tmp;
int err;
- const struct pcf85063_config *config = &pcf85063tp_config;
- const void *data = of_device_get_match_data(&client->dev);
+ const struct pcf85063_config *config;
+ enum pcf85063_type type;
struct nvmem_config nvmem_cfg = {
.name = "pcf85063_nvram",
.reg_read = pcf85063_nvmem_read,
@@ -530,8 +565,12 @@ static int pcf85063_probe(struct i2c_client *client)
if (!pcf85063)
return -ENOMEM;
- if (data)
- config = data;
+ if (client->dev.of_node)
+ type = (enum pcf85063_type)of_device_get_match_data(&client->dev);
+ else
+ type = i2c_match_id(pcf85063_ids, client)->driver_data;
+
+ config = &pcf85063_cfg[type];
pcf85063->regmap = devm_regmap_init_i2c(client, &config->regmap);
if (IS_ERR(pcf85063->regmap))
@@ -590,31 +629,21 @@ static int pcf85063_probe(struct i2c_client *client)
return devm_rtc_register_device(pcf85063->rtc);
}
-#ifdef CONFIG_OF
-static const struct pcf85063_config pcf85063a_config = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x11,
- },
- .has_alarms = 1,
-};
-
-static const struct pcf85063_config rv8263_config = {
- .regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .max_register = 0x11,
- },
- .has_alarms = 1,
- .force_cap_7000 = 1,
+static const struct i2c_device_id pcf85063_ids[] = {
+ { "pcf85063", PCF85063 },
+ { "pcf85063tp", PCF85063TP },
+ { "pcf85063a", PCF85063A },
+ { "rv8263", RV8263 },
+ {}
};
+MODULE_DEVICE_TABLE(i2c, pcf85063_ids);
+#ifdef CONFIG_OF
static const struct of_device_id pcf85063_of_match[] = {
- { .compatible = "nxp,pcf85063", .data = &pcf85063tp_config },
- { .compatible = "nxp,pcf85063tp", .data = &pcf85063tp_config },
- { .compatible = "nxp,pcf85063a", .data = &pcf85063a_config },
- { .compatible = "microcrystal,rv8263", .data = &rv8263_config },
+ { .compatible = "nxp,pcf85063", .data = (void *)PCF85063 },
+ { .compatible = "nxp,pcf85063tp", .data = (void *)PCF85063TP },
+ { .compatible = "nxp,pcf85063a", .data = (void *)PCF85063A },
+ { .compatible = "microcrystal,rv8263", .data = (void *)RV8263 },
{}
};
MODULE_DEVICE_TABLE(of, pcf85063_of_match);
@@ -626,6 +655,7 @@ static struct i2c_driver pcf85063_driver = {
.of_match_table = of_match_ptr(pcf85063_of_match),
},
.probe_new = pcf85063_probe,
+ .id_table = pcf85063_ids,
};
module_i2c_driver(pcf85063_driver);
--
2.30.2
Powered by blists - more mailing lists