rtc: pcf85363: Add support for NXP pcf85263 rtc (fc979933) · Commits · 戴 / test

drivers/rtc/rtc-pcf85363.c

+76 −18

Original line number	Diff line number	Diff line
		@@ -120,6 +120,11 @@ struct pcf85363 {
		struct regmap *regmap;
		};

		struct pcf85x63_config {
		struct regmap_config regmap;
		unsigned int num_nvram;
		};

		static int pcf85363_rtc_read_time(struct device dev, struct rtc_time tm)
		{
		struct pcf85363 *pcf85363 = dev_get_drvdata(dev);
		@@ -311,25 +316,75 @@ static int pcf85363_nvram_write(void priv, unsigned int offset, void val,
		val, bytes);
		}

		static const struct regmap_config regmap_config = {
		static int pcf85x63_nvram_read(void priv, unsigned int offset, void val,
		size_t bytes)
		{
		struct pcf85363 *pcf85363 = priv;
		unsigned int tmp_val;
		int ret;

		ret = regmap_read(pcf85363->regmap, CTRL_RAMBYTE, &tmp_val);
		((unsigned char ) val) = (unsigned char) tmp_val;

		return ret;
		}

		static int pcf85x63_nvram_write(void priv, unsigned int offset, void val,
		size_t bytes)
		{
		struct pcf85363 *pcf85363 = priv;
		unsigned char tmp_val;

		tmp_val = ((unsigned char )val);
		return regmap_write(pcf85363->regmap, CTRL_RAMBYTE,
		(unsigned int)tmp_val);
		}

		static const struct pcf85x63_config pcf_85263_config = {
		.regmap = {
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = 0x2f,
		},
		.num_nvram = 1
		};

		static const struct pcf85x63_config pcf_85363_config = {
		.regmap = {
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = 0x7f,
		},
		.num_nvram = 2
		};

		static int pcf85363_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		struct pcf85363 *pcf85363;
		struct nvmem_config nvmem_cfg = {
		const struct pcf85x63_config *config = &pcf_85363_config;
		const void *data = of_device_get_match_data(&client->dev);
		static struct nvmem_config nvmem_cfg[] = {
		{
		.name = "pcf85x63-",
		.word_size = 1,
		.stride = 1,
		.size = 1,
		.reg_read = pcf85x63_nvram_read,
		.reg_write = pcf85x63_nvram_write,
		}, {
		.name = "pcf85363-",
		.word_size = 1,
		.stride = 1,
		.size = NVRAM_SIZE,
		.reg_read = pcf85363_nvram_read,
		.reg_write = pcf85363_nvram_write,
		},
		};
		int ret;
		int ret, i;

		if (data)
		config = data;

		if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
		return -ENODEV;
		@@ -339,7 +394,7 @@ static int pcf85363_probe(struct i2c_client *client,
		if (!pcf85363)
		return -ENOMEM;

		pcf85363->regmap = devm_regmap_init_i2c(client, &regmap_config);
		pcf85363->regmap = devm_regmap_init_i2c(client, &config->regmap);
		if (IS_ERR(pcf85363->regmap)) {
		dev_err(&client->dev, "regmap allocation failed\n");
		return PTR_ERR(pcf85363->regmap);
		@@ -370,15 +425,18 @@ static int pcf85363_probe(struct i2c_client *client,

		ret = rtc_register_device(pcf85363->rtc);

		nvmem_cfg.priv = pcf85363;
		rtc_nvmem_register(pcf85363->rtc, &nvmem_cfg);
		for (i = 0; i < config->num_nvram; i++) {
		nvmem_cfg[i].priv = pcf85363;
		rtc_nvmem_register(pcf85363->rtc, &nvmem_cfg[i]);
		}

		return ret;
		}

		static const struct of_device_id dev_ids[] = {
		{ .compatible = "nxp,pcf85363" },
		{}
		{ .compatible = "nxp,pcf85263", .data = &pcf_85263_config },
		{ .compatible = "nxp,pcf85363", .data = &pcf_85363_config },
		{ /* sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, dev_ids);

		@@ -393,5 +451,5 @@ static struct i2c_driver pcf85363_driver = {
		module_i2c_driver(pcf85363_driver);

		MODULE_AUTHOR("Eric Nelson");
		MODULE_DESCRIPTION("pcf85363 I2C RTC driver");
		MODULE_DESCRIPTION("pcf85263/pcf85363 I2C RTC driver");
		MODULE_LICENSE("GPL");

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