From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: linux-rtc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH 10/12] rtc: pcf85063: add nvram support
Date: Mon, 1 Apr 2019 18:08:14 +0200 [thread overview]
Message-ID: <20190401160816.17859-10-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20190401160816.17859-1-alexandre.belloni@bootlin.com>
The pcf85063 has one byte of nvram.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-pcf85063.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index 0ac763c10744..04aaa83a5431 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -38,6 +38,8 @@
#define PCF85063_CTRL2_AF BIT(6)
#define PCF85063_CTRL2_AIE BIT(7)
+#define PCF85063_REG_RAM 0x03
+
#define PCF85063_REG_SC 0x04 /* datetime */
#define PCF85063_REG_SC_OS 0x80
@@ -236,6 +238,18 @@ static const struct rtc_class_ops pcf85063_rtc_ops_alarm = {
.alarm_irq_enable = pcf85063_rtc_alarm_irq_enable,
};
+static int pcf85063_nvmem_read(void *priv, unsigned int offset,
+ void *val, size_t bytes)
+{
+ return regmap_read(priv, PCF85063_REG_RAM, val);
+}
+
+static int pcf85063_nvmem_write(void *priv, unsigned int offset,
+ void *val, size_t bytes)
+{
+ return regmap_write(priv, PCF85063_REG_RAM, *(u8 *)val);
+}
+
static int pcf85063_load_capacitance(struct pcf85063 *pcf85063,
const struct device_node *np,
unsigned int force_cap)
@@ -298,6 +312,13 @@ static int pcf85063_probe(struct i2c_client *client)
int err;
const struct pcf85063_config *config = &pcf85063tp_config;
const void *data = of_device_get_match_data(&client->dev);
+ struct nvmem_config nvmem_cfg = {
+ .name = "pcf85063_nvram",
+ .reg_read = pcf85063_nvmem_read,
+ .reg_write = pcf85063_nvmem_write,
+ .type = NVMEM_TYPE_BATTERY_BACKED,
+ .size = 1,
+ };
dev_dbg(&client->dev, "%s\n", __func__);
@@ -354,6 +375,9 @@ static int pcf85063_probe(struct i2c_client *client)
}
}
+ nvmem_cfg.priv = pcf85063->regmap;
+ rtc_nvmem_register(pcf85063->rtc, &nvmem_cfg);
+
return rtc_register_device(pcf85063->rtc);
}
--
2.20.1
next prev parent reply other threads:[~2019-04-01 16:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 16:08 [PATCH 01/12] rtc: pcf85063: switch to probe_new Alexandre Belloni
2019-04-01 16:08 ` [PATCH 02/12] rtc: pcf85063: convert to SPDX identifier Alexandre Belloni
2019-04-01 16:16 ` Joe Perches
2019-04-01 16:29 ` Alexandre Belloni
2019-04-01 16:33 ` [PATCH v2 " Alexandre Belloni
2019-04-01 16:08 ` [PATCH 03/12] rtc: pcf85063: remove bogus i2c functionality check Alexandre Belloni
2019-04-01 16:08 ` [PATCH 04/12] rtc: pcf85063: convert to devm_rtc_allocate_device Alexandre Belloni
2019-04-01 16:08 ` [PATCH 05/12] rtc: pcf85063: set range Alexandre Belloni
2019-04-01 16:08 ` [PATCH 06/12] rtc: pcf85063: switch to regmap Alexandre Belloni
2019-04-01 16:08 ` [PATCH 07/12] rtc: pcf85063: differentiate pcf85063a and pcf85063tp Alexandre Belloni
2019-04-01 16:08 ` [PATCH 08/12] rtc: pcf85063: add alarm support Alexandre Belloni
2019-04-01 16:08 ` [PATCH 09/12] rtc: pcf85063: Add Micro Crystal RV8263 support Alexandre Belloni
2019-04-01 16:08 ` Alexandre Belloni [this message]
2019-04-01 16:08 ` [PATCH 11/12] rtc: pcf85063: add offset correction support Alexandre Belloni
2019-04-01 16:08 ` [PATCH 12/12] rtc: pcf85063: add RTC_VL_READ/RTC_VL_CLR support Alexandre Belloni
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