summaryrefslogtreecommitdiff
path: root/drivers/rtc
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-15 04:36:42 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-15 04:36:42 +0300
commitb7270c69a36efc61ed6ebd31a8a458f354a6edc0 (patch)
tree8534bfbe4513a7bfa1aeae65a0f51fa95258ac59 /drivers/rtc
parent4ce1b97949cbf46e847722461386170e0f709c59 (diff)
parente5f12a398371280649ccc9d6eb0b97fd42a5df98 (diff)
downloadlinux-b7270c69a36efc61ed6ebd31a8a458f354a6edc0.tar.xz
Merge tag 'rtc-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni: "A great rework of the isl12022 driver makes up the bulk of the changes. There is also an important fix for CMOS and then the usual small fixes: - switch to devm_clk_get_enabled() where relevant - cmos: event handler registration fix - isl12022: code improvements" * tag 'rtc-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: rv3028: Fix codestyle errors rtc: cmos: Fix event handler registration ordering issue rtc: k3: Use devm_clk_get_enabled() helper rtc: jz4740: Use devm_clk_get_enabled() helper rtc: mpfs: Use devm_clk_get_enabled() helper rtc: ds1685: Fix spelling of function name in comment block rtc: isl12022: switch to using regmap API rtc: isl12022: drop redundant write to HR register rtc: isl12022: use dev_set_drvdata() instead of i2c_set_clientdata() rtc: isl12022: use %ptR rtc: isl12022: simplify some expressions rtc: isl12022: drop a dev_info() rtc: isl12022: specify range_min and range_max rtc: isl12022: stop using deprecated devm_rtc_device_register() rtc: stmp3xxx: Add failure handling for stmp3xxx_wdt_register() rtc: mxc: Use devm_clk_get_enabled() helper rtc: gamecube: Always reset HW_SRNPROT after read rtc: k3: detect SoC to determine erratum fix rtc: k3: wait until the unlock field is not zero rtc: mpfs: Remove printing of stray CR
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/Kconfig1
-rw-r--r--drivers/rtc/rtc-cmos.c29
-rw-r--r--drivers/rtc/rtc-ds1685.c2
-rw-r--r--drivers/rtc/rtc-gamecube.c11
-rw-r--r--drivers/rtc/rtc-isl12022.c161
-rw-r--r--drivers/rtc/rtc-jz4740.c25
-rw-r--r--drivers/rtc/rtc-mpfs.c26
-rw-r--r--drivers/rtc/rtc-mxc.c27
-rw-r--r--drivers/rtc/rtc-rv3028.c5
-rw-r--r--drivers/rtc/rtc-stmp3xxx.c2
-rw-r--r--drivers/rtc/rtc-ti-k3.c56
11 files changed, 98 insertions, 247 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index b8de25118ad0..bb63edb507da 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -423,6 +423,7 @@ config RTC_DRV_ISL1208
config RTC_DRV_ISL12022
tristate "Intersil ISL12022"
+ select REGMAP_I2C
help
If you say yes here you get support for the
Intersil ISL12022 RTC chip.
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index bdb1df843c78..610413b4e9ca 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -1352,10 +1352,10 @@ static void cmos_check_acpi_rtc_status(struct device *dev,
static int cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
{
- cmos_wake_setup(&pnp->dev);
+ int irq, ret;
if (pnp_port_start(pnp, 0) == 0x70 && !pnp_irq_valid(pnp, 0)) {
- unsigned int irq = 0;
+ irq = 0;
#ifdef CONFIG_X86
/* Some machines contain a PNP entry for the RTC, but
* don't define the IRQ. It should always be safe to
@@ -1364,13 +1364,17 @@ static int cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
if (nr_legacy_irqs())
irq = RTC_IRQ;
#endif
- return cmos_do_probe(&pnp->dev,
- pnp_get_resource(pnp, IORESOURCE_IO, 0), irq);
} else {
- return cmos_do_probe(&pnp->dev,
- pnp_get_resource(pnp, IORESOURCE_IO, 0),
- pnp_irq(pnp, 0));
+ irq = pnp_irq(pnp, 0);
}
+
+ ret = cmos_do_probe(&pnp->dev, pnp_get_resource(pnp, IORESOURCE_IO, 0), irq);
+ if (ret)
+ return ret;
+
+ cmos_wake_setup(&pnp->dev);
+
+ return 0;
}
static void cmos_pnp_remove(struct pnp_dev *pnp)
@@ -1454,10 +1458,9 @@ static inline void cmos_of_init(struct platform_device *pdev) {}
static int __init cmos_platform_probe(struct platform_device *pdev)
{
struct resource *resource;
- int irq;
+ int irq, ret;
cmos_of_init(pdev);
- cmos_wake_setup(&pdev->dev);
if (RTC_IOMAPPED)
resource = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1467,7 +1470,13 @@ static int __init cmos_platform_probe(struct platform_device *pdev)
if (irq < 0)
irq = -1;
- return cmos_do_probe(&pdev->dev, resource, irq);
+ ret = cmos_do_probe(&pdev->dev, resource, irq);
+ if (ret)
+ return ret;
+
+ cmos_wake_setup(&pdev->dev);
+
+ return 0;
}
static int cmos_platform_remove(struct platform_device *pdev)
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index a24331ba8a5f..5db9c737c022 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -132,7 +132,7 @@ ds1685_rtc_bin2bcd(struct ds1685_priv *rtc, u8 val, u8 bin_mask, u8 bcd_mask)
}
/**
- * s1685_rtc_check_mday - check validity of the day of month.
+ * ds1685_rtc_check_mday - check validity of the day of month.
* @rtc: pointer to the ds1685 rtc structure.
* @mday: day of month.
*
diff --git a/drivers/rtc/rtc-gamecube.c b/drivers/rtc/rtc-gamecube.c
index c2717bb52b2b..c828bc8e05b9 100644
--- a/drivers/rtc/rtc-gamecube.c
+++ b/drivers/rtc/rtc-gamecube.c
@@ -265,18 +265,17 @@ static int gamecube_rtc_read_offset_from_sram(struct priv *d)
* SRAM address as on previous consoles.
*/
ret = regmap_read(d->regmap, RTC_SRAM_BIAS, &d->rtc_bias);
- if (ret) {
- pr_err("failed to get the RTC bias\n");
- iounmap(hw_srnprot);
- return -1;
- }
/* Reset SRAM access to how it was before, our job here is done. */
if (old != 0x7bf)
iowrite32be(old, hw_srnprot);
+
iounmap(hw_srnprot);
- return 0;
+ if (ret)
+ pr_err("failed to get the RTC bias\n");
+
+ return ret;
}
static const struct regmap_range rtc_rd_ranges[] = {
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 79461ded1a48..ca677c4265e6 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -16,6 +16,7 @@
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_device.h>
+#include <linux/regmap.h>
/* ISL register offsets */
#define ISL12022_REG_SC 0x00
@@ -42,83 +43,32 @@ static struct i2c_driver isl12022_driver;
struct isl12022 {
struct rtc_device *rtc;
-
- bool write_enabled; /* true if write enable is set */
+ struct regmap *regmap;
};
-
-static int isl12022_read_regs(struct i2c_client *client, uint8_t reg,
- uint8_t *data, size_t n)
-{
- struct i2c_msg msgs[] = {
- {
- .addr = client->addr,
- .flags = 0,
- .len = 1,
- .buf = data
- }, /* setup read ptr */
- {
- .addr = client->addr,
- .flags = I2C_M_RD,
- .len = n,
- .buf = data
- }
- };
-
- int ret;
-
- data[0] = reg;
- ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
- if (ret != ARRAY_SIZE(msgs)) {
- dev_err(&client->dev, "%s: read error, ret=%d\n",
- __func__, ret);
- return -EIO;
- }
-
- return 0;
-}
-
-
-static int isl12022_write_reg(struct i2c_client *client,
- uint8_t reg, uint8_t val)
-{
- uint8_t data[2] = { reg, val };
- int err;
-
- err = i2c_master_send(client, data, sizeof(data));
- if (err != sizeof(data)) {
- dev_err(&client->dev,
- "%s: err=%d addr=%02x, data=%02x\n",
- __func__, err, data[0], data[1]);
- return -EIO;
- }
-
- return 0;
-}
-
-
/*
* In the routines that deal directly with the isl12022 hardware, we use
* rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
*/
static int isl12022_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct isl12022 *isl12022 = dev_get_drvdata(dev);
+ struct regmap *regmap = isl12022->regmap;
uint8_t buf[ISL12022_REG_INT + 1];
int ret;
- ret = isl12022_read_regs(client, ISL12022_REG_SC, buf, sizeof(buf));
+ ret = regmap_bulk_read(regmap, ISL12022_REG_SC, buf, sizeof(buf));
if (ret)
return ret;
if (buf[ISL12022_REG_SR] & (ISL12022_SR_LBAT85 | ISL12022_SR_LBAT75)) {
- dev_warn(&client->dev,
+ dev_warn(dev,
"voltage dropped below %u%%, "
"date and time is not reliable.\n",
buf[ISL12022_REG_SR] & ISL12022_SR_LBAT85 ? 85 : 75);
}
- dev_dbg(&client->dev,
+ dev_dbg(dev,
"%s: raw data is sec=%02x, min=%02x, hr=%02x, "
"mday=%02x, mon=%02x, year=%02x, wday=%02x, "
"sr=%02x, int=%02x",
@@ -141,65 +91,25 @@ static int isl12022_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_mon = bcd2bin(buf[ISL12022_REG_MO] & 0x1F) - 1;
tm->tm_year = bcd2bin(buf[ISL12022_REG_YR]) + 100;
- dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
- "mday=%d, mon=%d, year=%d, wday=%d\n",
- __func__,
- tm->tm_sec, tm->tm_min, tm->tm_hour,
- tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+ dev_dbg(dev, "%s: %ptR\n", __func__, tm);
return 0;
}
static int isl12022_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct isl12022 *isl12022 = i2c_get_clientdata(client);
- size_t i;
+ struct isl12022 *isl12022 = dev_get_drvdata(dev);
+ struct regmap *regmap = isl12022->regmap;
int ret;
uint8_t buf[ISL12022_REG_DW + 1];
- dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
- "mday=%d, mon=%d, year=%d, wday=%d\n",
- __func__,
- tm->tm_sec, tm->tm_min, tm->tm_hour,
- tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
-
- if (!isl12022->write_enabled) {
-
- ret = isl12022_read_regs(client, ISL12022_REG_INT, buf, 1);
- if (ret)
- return ret;
-
- /* Check if WRTC (write rtc enable) is set factory default is
- * 0 (not set) */
- if (!(buf[0] & ISL12022_INT_WRTC)) {
- dev_info(&client->dev,
- "init write enable and 24 hour format\n");
-
- /* Set the write enable bit. */
- ret = isl12022_write_reg(client,
- ISL12022_REG_INT,
- buf[0] | ISL12022_INT_WRTC);
- if (ret)
- return ret;
-
- /* Write to any RTC register to start RTC, we use the
- * HR register, setting the MIL bit to use the 24 hour
- * format. */
- ret = isl12022_read_regs(client, ISL12022_REG_HR,
- buf, 1);
- if (ret)
- return ret;
-
- ret = isl12022_write_reg(client,
- ISL12022_REG_HR,
- buf[0] | ISL12022_HR_MIL);
- if (ret)
- return ret;
- }
-
- isl12022->write_enabled = true;
- }
+ dev_dbg(dev, "%s: %ptR\n", __func__, tm);
+
+ /* Ensure the write enable bit is set. */
+ ret = regmap_update_bits(regmap, ISL12022_REG_INT,
+ ISL12022_INT_WRTC, ISL12022_INT_WRTC);
+ if (ret)
+ return ret;
/* hours, minutes and seconds */
buf[ISL12022_REG_SC] = bin2bcd(tm->tm_sec);
@@ -216,15 +126,8 @@ static int isl12022_rtc_set_time(struct device *dev, struct rtc_time *tm)
buf[ISL12022_REG_DW] = tm->tm_wday & 0x07;
- /* write register's data */
- for (i = 0; i < ARRAY_SIZE(buf); i++) {
- ret = isl12022_write_reg(client, ISL12022_REG_SC + i,
- buf[ISL12022_REG_SC + i]);
- if (ret)
- return -EIO;
- }
-
- return 0;
+ return regmap_bulk_write(isl12022->regmap, ISL12022_REG_SC,
+ buf, sizeof(buf));
}
static const struct rtc_class_ops isl12022_rtc_ops = {
@@ -232,6 +135,12 @@ static const struct rtc_class_ops isl12022_rtc_ops = {
.set_time = isl12022_rtc_set_time,
};
+static const struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .use_single_write = true,
+};
+
static int isl12022_probe(struct i2c_client *client)
{
struct isl12022 *isl12022;
@@ -243,13 +152,23 @@ static int isl12022_probe(struct i2c_client *client)
GFP_KERNEL);
if (!isl12022)
return -ENOMEM;
+ dev_set_drvdata(&client->dev, isl12022);
+
+ isl12022->regmap = devm_regmap_init_i2c(client, &regmap_config);
+ if (IS_ERR(isl12022->regmap)) {
+ dev_err(&client->dev, "regmap allocation failed\n");
+ return PTR_ERR(isl12022->regmap);
+ }
+
+ isl12022->rtc = devm_rtc_allocate_device(&client->dev);
+ if (IS_ERR(isl12022->rtc))
+ return PTR_ERR(isl12022->rtc);
- i2c_set_clientdata(client, isl12022);
+ isl12022->rtc->ops = &isl12022_rtc_ops;
+ isl12022->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ isl12022->rtc->range_max = RTC_TIMESTAMP_END_2099;
- isl12022->rtc = devm_rtc_device_register(&client->dev,
- isl12022_driver.driver.name,
- &isl12022_rtc_ops, THIS_MODULE);
- return PTR_ERR_OR_ZERO(isl12022->rtc);
+ return devm_rtc_register_device(isl12022->rtc);
}
#ifdef CONFIG_OF
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
index 6e51df72fd65..c383719292c7 100644
--- a/drivers/rtc/rtc-jz4740.c
+++ b/drivers/rtc/rtc-jz4740.c
@@ -257,11 +257,6 @@ static void jz4740_rtc_power_off(void)
kernel_halt();
}
-static void jz4740_rtc_clk_disable(void *data)
-{
- clk_disable_unprepare(data);
-}
-
static const struct of_device_id jz4740_rtc_of_match[] = {
{ .compatible = "ingenic,jz4740-rtc", .data = (void *)ID_JZ4740 },
{ .compatible = "ingenic,jz4760-rtc", .data = (void *)ID_JZ4760 },
@@ -329,23 +324,9 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
if (IS_ERR(rtc->base))
return PTR_ERR(rtc->base);
- clk = devm_clk_get(dev, "rtc");
- if (IS_ERR(clk)) {
- dev_err(dev, "Failed to get RTC clock\n");
- return PTR_ERR(clk);
- }
-
- ret = clk_prepare_enable(clk);
- if (ret) {
- dev_err(dev, "Failed to enable clock\n");
- return ret;
- }
-
- ret = devm_add_action_or_reset(dev, jz4740_rtc_clk_disable, clk);
- if (ret) {
- dev_err(dev, "Failed to register devm action\n");
- return ret;
- }
+ clk = devm_clk_get_enabled(dev, "rtc");
+ if (IS_ERR(clk))
+ return dev_err_probe(dev, PTR_ERR(clk), "Failed to get RTC clock\n");
spin_lock_init(&rtc->lock);
diff --git a/drivers/rtc/rtc-mpfs.c b/drivers/rtc/rtc-mpfs.c
index f14d1925e0c9..2a479d44f198 100644
--- a/drivers/rtc/rtc-mpfs.c
+++ b/drivers/rtc/rtc-mpfs.c
@@ -193,23 +193,6 @@ static int mpfs_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
-static inline struct clk *mpfs_rtc_init_clk(struct device *dev)
-{
- struct clk *clk;
- int ret;
-
- clk = devm_clk_get(dev, "rtc");
- if (IS_ERR(clk))
- return clk;
-
- ret = clk_prepare_enable(clk);
- if (ret)
- return ERR_PTR(ret);
-
- devm_add_action_or_reset(dev, (void (*) (void *))clk_disable_unprepare, clk);
- return clk;
-}
-
static irqreturn_t mpfs_rtc_wakeup_irq_handler(int irq, void *dev)
{
struct mpfs_rtc_dev *rtcdev = dev;
@@ -233,7 +216,7 @@ static int mpfs_rtc_probe(struct platform_device *pdev)
{
struct mpfs_rtc_dev *rtcdev;
struct clk *clk;
- u32 prescaler;
+ unsigned long prescaler;
int wakeup_irq, ret;
rtcdev = devm_kzalloc(&pdev->dev, sizeof(struct mpfs_rtc_dev), GFP_KERNEL);
@@ -251,7 +234,7 @@ static int mpfs_rtc_probe(struct platform_device *pdev)
/* range is capped by alarm max, lower reg is 31:0 & upper is 10:0 */
rtcdev->rtc->range_max = GENMASK_ULL(42, 0);
- clk = mpfs_rtc_init_clk(&pdev->dev);
+ clk = devm_clk_get_enabled(&pdev->dev, "rtc");
if (IS_ERR(clk))
return PTR_ERR(clk);
@@ -275,14 +258,13 @@ static int mpfs_rtc_probe(struct platform_device *pdev)
/* prescaler hardware adds 1 to reg value */
prescaler = clk_get_rate(devm_clk_get(&pdev->dev, "rtcref")) - 1;
-
if (prescaler > MAX_PRESCALER_COUNT) {
- dev_dbg(&pdev->dev, "invalid prescaler %d\n", prescaler);
+ dev_dbg(&pdev->dev, "invalid prescaler %lu\n", prescaler);
return -EINVAL;
}
writel(prescaler, rtcdev->base + PRESCALER_REG);
- dev_info(&pdev->dev, "prescaler set to: 0x%X \r\n", prescaler);
+ dev_info(&pdev->dev, "prescaler set to: %lu\n", prescaler);
device_init_wakeup(&pdev->dev, true);
ret = dev_pm_set_wake_irq(&pdev->dev, wakeup_irq);
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 53d4e253e81f..762cf03345f1 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -291,14 +291,6 @@ static const struct rtc_class_ops mxc_rtc_ops = {
.alarm_irq_enable = mxc_rtc_alarm_irq_enable,
};
-static void mxc_rtc_action(void *p)
-{
- struct rtc_plat_data *pdata = p;
-
- clk_disable_unprepare(pdata->clk_ref);
- clk_disable_unprepare(pdata->clk_ipg);
-}
-
static int mxc_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
@@ -341,33 +333,18 @@ static int mxc_rtc_probe(struct platform_device *pdev)
rtc->range_max = (1 << 16) * 86400ULL - 1;
}
- pdata->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+ pdata->clk_ipg = devm_clk_get_enabled(&pdev->dev, "ipg");
if (IS_ERR(pdata->clk_ipg)) {
dev_err(&pdev->dev, "unable to get ipg clock!\n");
return PTR_ERR(pdata->clk_ipg);
}
- ret = clk_prepare_enable(pdata->clk_ipg);
- if (ret)
- return ret;
-
- pdata->clk_ref = devm_clk_get(&pdev->dev, "ref");
+ pdata->clk_ref = devm_clk_get_enabled(&pdev->dev, "ref");
if (IS_ERR(pdata->clk_ref)) {
- clk_disable_unprepare(pdata->clk_ipg);
dev_err(&pdev->dev, "unable to get ref clock!\n");
return PTR_ERR(pdata->clk_ref);
}
- ret = clk_prepare_enable(pdata->clk_ref);
- if (ret) {
- clk_disable_unprepare(pdata->clk_ipg);
- return ret;
- }
-
- ret = devm_add_action_or_reset(&pdev->dev, mxc_rtc_action, pdata);
- if (ret)
- return ret;
-
rate = clk_get_rate(pdata->clk_ref);
if (rate == 32768)
diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c
index cdc623b3e365..dd170e3efd83 100644
--- a/drivers/rtc/rtc-rv3028.c
+++ b/drivers/rtc/rtc-rv3028.c
@@ -521,10 +521,9 @@ static int rv3028_param_get(struct device *dev, struct rtc_param *param)
{
struct rv3028_data *rv3028 = dev_get_drvdata(dev);
int ret;
+ u32 value;
switch(param->param) {
- u32 value;
-
case RTC_PARAM_BACKUP_SWITCH_MODE:
ret = regmap_read(rv3028->regmap, RV3028_BACKUP, &value);
if (ret < 0)
@@ -554,9 +553,9 @@ static int rv3028_param_get(struct device *dev, struct rtc_param *param)
static int rv3028_param_set(struct device *dev, struct rtc_param *param)
{
struct rv3028_data *rv3028 = dev_get_drvdata(dev);
+ u8 mode;
switch(param->param) {
- u8 mode;
case RTC_PARAM_BACKUP_SWITCH_MODE:
switch (param->uvalue) {
case RTC_BSM_DISABLED:
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 40c0f7ed36e0..aae40d20d086 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -107,6 +107,8 @@ static void stmp3xxx_wdt_register(struct platform_device *rtc_pdev)
wdt_pdev->dev.parent = &rtc_pdev->dev;
wdt_pdev->dev.platform_data = &wdt_pdata;
rc = platform_device_add(wdt_pdev);
+ if (rc)
+ platform_device_put(wdt_pdev);
}
if (rc)
diff --git a/drivers/rtc/rtc-ti-k3.c b/drivers/rtc/rtc-ti-k3.c
index 7a0f181d3fef..ba23163cc042 100644
--- a/drivers/rtc/rtc-ti-k3.c
+++ b/drivers/rtc/rtc-ti-k3.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/sys_soc.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
@@ -45,14 +46,6 @@
#define K3RTC_MIN_OFFSET (-277761)
#define K3RTC_MAX_OFFSET (277778)
-/**
- * struct ti_k3_rtc_soc_data - Private of compatible data for ti-k3-rtc
- * @unlock_irq_erratum: Has erratum for unlock infinite IRQs (erratum i2327)
- */
-struct ti_k3_rtc_soc_data {
- const bool unlock_irq_erratum;
-};
-
static const struct regmap_config ti_k3_rtc_regmap_config = {
.name = "peripheral-registers",
.reg_bits = 32,
@@ -118,7 +111,6 @@ static const struct reg_field ti_rtc_reg_fields[] = {
* @rtc_dev: rtc device
* @regmap: rtc mmio regmap
* @r_fields: rtc register fields
- * @soc: SoC compatible match data
*/
struct ti_k3_rtc {
unsigned int irq;
@@ -127,7 +119,6 @@ struct ti_k3_rtc {
struct rtc_device *rtc_dev;
struct regmap *regmap;
struct regmap_field *r_fields[K3_RTC_MAX_FIELDS];
- const struct ti_k3_rtc_soc_data *soc;
};
static int k3rtc_field_read(struct ti_k3_rtc *priv, enum ti_k3_rtc_fields f)
@@ -190,11 +181,22 @@ static int k3rtc_unlock_rtc(struct ti_k3_rtc *priv)
/* Skip fence since we are going to check the unlock bit as fence */
ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret,
- !ret, 2, priv->sync_timeout_us);
+ ret, 2, priv->sync_timeout_us);
return ret;
}
+/*
+ * This is the list of SoCs affected by TI's i2327 errata causing the RTC
+ * state-machine to break if not unlocked fast enough during boot. These
+ * SoCs must have the bootloader unlock this device very early in the
+ * boot-flow before we (Linux) can use this device.
+ */
+static const struct soc_device_attribute has_erratum_i2327[] = {
+ { .family = "AM62X", .revision = "SR1.0" },
+ { /* sentinel */ }
+};
+
static int k3rtc_configure(struct device *dev)
{
int ret;
@@ -208,7 +210,7 @@ static int k3rtc_configure(struct device *dev)
*
* In such occurrence, it is assumed that the RTC module is unusable
*/
- if (priv->soc->unlock_irq_erratum) {
+ if (soc_device_match(has_erratum_i2327)) {
ret = k3rtc_check_unlocked(priv);
/* If there is an error OR if we are locked, return error */
if (ret) {
@@ -513,21 +515,12 @@ static struct nvmem_config ti_k3_rtc_nvmem_config = {
static int k3rtc_get_32kclk(struct device *dev, struct ti_k3_rtc *priv)
{
- int ret;
struct clk *clk;
- clk = devm_clk_get(dev, "osc32k");
+ clk = devm_clk_get_enabled(dev, "osc32k");
if (IS_ERR(clk))
return PTR_ERR(clk);
- ret = clk_prepare_enable(clk);
- if (ret)
- return ret;
-
- ret = devm_add_action_or_reset(dev, (void (*)(void *))clk_disable_unprepare, clk);
- if (ret)
- return ret;
-
priv->rate_32k = clk_get_rate(clk);
/* Make sure we are exact 32k clock. Else, try to compensate delay */
@@ -542,24 +535,19 @@ static int k3rtc_get_32kclk(struct device *dev, struct ti_k3_rtc *priv)
*/
priv->sync_timeout_us = (u32)(DIV_ROUND_UP_ULL(1000000, priv->rate_32k) * 4);
- return ret;
+ return 0;
}
static int k3rtc_get_vbusclk(struct device *dev, struct ti_k3_rtc *priv)
{
- int ret;
struct clk *clk;
/* Note: VBUS isn't a context clock, it is needed for hardware operation */
- clk = devm_clk_get(dev, "vbus");
+ clk = devm_clk_get_enabled(dev, "vbus");
if (IS_ERR(clk))
return PTR_ERR(clk);
- ret = clk_prepare_enable(clk);
- if (ret)
- return ret;
-
- return devm_add_action_or_reset(dev, (void (*)(void *))clk_disable_unprepare, clk);
+ return 0;
}
static int ti_k3_rtc_probe(struct platform_device *pdev)
@@ -602,8 +590,6 @@ static int ti_k3_rtc_probe(struct platform_device *pdev)
if (IS_ERR(priv->rtc_dev))
return PTR_ERR(priv->rtc_dev);
- priv->soc = of_device_get_match_data(dev);
-
priv->rtc_dev->ops = &ti_k3_rtc_ops;
priv->rtc_dev->range_max = (1ULL << 48) - 1; /* 48Bit seconds */
ti_k3_rtc_nvmem_config.priv = priv;
@@ -635,12 +621,8 @@ static int ti_k3_rtc_probe(struct platform_device *pdev)
return devm_rtc_nvmem_register(priv->rtc_dev, &ti_k3_rtc_nvmem_config);
}
-static const struct ti_k3_rtc_soc_data ti_k3_am62_data = {
- .unlock_irq_erratum = true,
-};
-
static const struct of_device_id ti_k3_rtc_of_match_table[] = {
- {.compatible = "ti,am62-rtc", .data = &ti_k3_am62_data},
+ {.compatible = "ti,am62-rtc" },
{}
};
MODULE_DEVICE_TABLE(of, ti_k3_rtc_of_match_table);