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rtc: pcf85063: differentiate pcf85063a and pcf85063tp

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As stated in a comment pcf85063a and pcf85063tp don't have the same number
of registers. Especially, pcf85063tp doesn't have alarm support.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2019-04-01 18:08:11 +02:00
parent e89b60d028
commit 0e2e87779a
2 changed files with 31 additions and 7 deletions
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5
Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt
View file

@ -1,7 +1,10 @@
* NXP PCF85063 Real Time Clock
Required properties:
- compatible: Should contain "nxp,pcf85063".
- compatible: Should one of contain:
"nxp,pcf85063",
"nxp,pcf85063a",
"nxp,pcf85063tp"
- reg: I2C address for chip.
Optional property:

33
drivers/rtc/rtc-pcf85063.c
View file

@ -30,6 +30,10 @@
#define PCF85063_REG_SC 0x04 /* datetime */
#define PCF85063_REG_SC_OS 0x80
struct pcf85063_config {
struct regmap_config regmap;
};
struct pcf85063 {
struct rtc_device *rtc;
struct regmap *regmap;
@ -147,10 +151,20 @@ static int pcf85063_load_capacitance(struct pcf85063 *pcf85063,
PCF85063_REG_CTRL1_CAP_SEL, reg);
}
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x11,
static const struct pcf85063_config pcf85063a_config = {
.regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x11,
},
};
static const struct pcf85063_config pcf85063tp_config = {
.regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x0a,
},
};
static int pcf85063_probe(struct i2c_client *client)
@ -158,6 +172,8 @@ 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);
dev_dbg(&client->dev, "%s\n", __func__);
@ -166,7 +182,10 @@ static int pcf85063_probe(struct i2c_client *client)
if (!pcf85063)
return -ENOMEM;
pcf85063->regmap = devm_regmap_init_i2c(client, &regmap_config);
if (data)
config = data;
pcf85063->regmap = devm_regmap_init_i2c(client, &config->regmap);
if (IS_ERR(pcf85063->regmap))
return PTR_ERR(pcf85063->regmap);
@ -196,7 +215,9 @@ static int pcf85063_probe(struct i2c_client *client)
#ifdef CONFIG_OF
static const struct of_device_id pcf85063_of_match[] = {
{ .compatible = "nxp,pcf85063" },
{ .compatible = "nxp,pcf85063", .data = &pcf85063tp_config },
{ .compatible = "nxp,pcf85063tp", .data = &pcf85063tp_config },
{ .compatible = "nxp,pcf85063a", .data = &pcf85063a_config },
{}
};
MODULE_DEVICE_TABLE(of, pcf85063_of_match);