From: Balaji T K <balaj...@ti.com>
This version of patch series enables RUN TIME selection of TWL4030 or TWL6030.
This patch adds support for RTC in phoenix TWL6030.
Register offset addresses have changed in TWL6030
rtc-twl.c will hence forth support all twl RTC (4030, 5030, 6030 ..)
Signed-off-by: Balaji T K <balaj...@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilim...@ti.com>
---
drivers/mfd/twl-core.c | 2 +-
drivers/rtc/Kconfig | 8 ++--
drivers/rtc/Makefile | 2 +-
drivers/rtc/rtc-twl.c | 113 ++++++++++++++++++++++++++++++++++++------------
4 files changed, 91 insertions(+), 34 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 4066b2f..78109ca 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -89,7 +89,7 @@
#define twl_has_madc() false
#endif
-#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
+#if defined(CONFIG_RTC_DRV_TWL) || defined(CONFIG_RTC_DRV_TWL_MODULE)
#define twl_has_rtc() true
#else
#define twl_has_rtc() false
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 81adbdb..bb94924 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -257,15 +257,15 @@ config RTC_DRV_TWL92330
platforms. The support is integrated with the rest of
the Menelaus driver; it's not separate module.
-config RTC_DRV_TWL4030
- tristate "TI TWL4030/TWL5030/TPS659x0"
- depends on RTC_CLASS && TWL4030_CORE
+config RTC_DRV_TWL
+ tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
+ depends on RTC_CLASS && TWL_CORE
help
If you say yes here you get support for the RTC on the
TWL4030 family chips, used mostly with OMAP3 platforms.
This driver can also be built as a module. If so, the module
- will be called rtc-twl4030.
+ will be called rtc-twl.
config RTC_DRV_S35390A
tristate "Seiko Instruments S-35390A"
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index e331b1c..c32e21d 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -70,7 +70,7 @@ obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o
obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o
obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
-obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o
+obj-$(CONFIG_RTC_DRV_TWL) += rtc-twl.o
obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o
obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o
obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 630acb7..1e9f90d 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -34,27 +34,75 @@
/*
* RTC block register offsets (use TWL_MODULE_RTC)
*/
-#define REG_SECONDS_REG 0x00
-#define REG_MINUTES_REG 0x01
-#define REG_HOURS_REG 0x02
-#define REG_DAYS_REG 0x03
-#define REG_MONTHS_REG 0x04
-#define REG_YEARS_REG 0x05
-#define REG_WEEKS_REG 0x06
-
-#define REG_ALARM_SECONDS_REG 0x07
-#define REG_ALARM_MINUTES_REG 0x08
-#define REG_ALARM_HOURS_REG 0x09
-#define REG_ALARM_DAYS_REG 0x0A
-#define REG_ALARM_MONTHS_REG 0x0B
-#define REG_ALARM_YEARS_REG 0x0C
-
-#define REG_RTC_CTRL_REG 0x0D
-#define REG_RTC_STATUS_REG 0x0E
-#define REG_RTC_INTERRUPTS_REG 0x0F
-
-#define REG_RTC_COMP_LSB_REG 0x10
-#define REG_RTC_COMP_MSB_REG 0x11
+enum {
+ REG_SECONDS_REG = 0,
+ REG_MINUTES_REG,
+ REG_HOURS_REG,
+ REG_DAYS_REG,
+ REG_MONTHS_REG,
+ REG_YEARS_REG,
+ REG_WEEKS_REG,
+
+ REG_ALARM_SECONDS_REG,
+ REG_ALARM_MINUTES_REG,
+ REG_ALARM_HOURS_REG,
+ REG_ALARM_DAYS_REG,
+ REG_ALARM_MONTHS_REG,
+ REG_ALARM_YEARS_REG,
+
+ REG_RTC_CTRL_REG,
+ REG_RTC_STATUS_REG,
+ REG_RTC_INTERRUPTS_REG,
+
+ REG_RTC_COMP_LSB_REG,
+ REG_RTC_COMP_MSB_REG,
+};
+const static u8 twl4030_rtc_reg_map[] = {
+ [REG_SECONDS_REG] = 0x00,
+ [REG_MINUTES_REG] = 0x01,
+ [REG_HOURS_REG] = 0x02,
+ [REG_DAYS_REG] = 0x03,
+ [REG_MONTHS_REG] = 0x04,
+ [REG_YEARS_REG] = 0x05,
+ [REG_WEEKS_REG] = 0x06,
+
+ [REG_ALARM_SECONDS_REG] = 0x07,
+ [REG_ALARM_MINUTES_REG] = 0x08,
+ [REG_ALARM_HOURS_REG] = 0x09,
+ [REG_ALARM_DAYS_REG] = 0x0A,
+ [REG_ALARM_MONTHS_REG] = 0x0B,
+ [REG_ALARM_YEARS_REG] = 0x0C,
+
+ [REG_RTC_CTRL_REG] = 0x0D,
+ [REG_RTC_STATUS_REG] = 0x0E,
+ [REG_RTC_INTERRUPTS_REG] = 0x0F,
+
+ [REG_RTC_COMP_LSB_REG] = 0x10,
+ [REG_RTC_COMP_MSB_REG] = 0x11,
+};
+const static u8 twl6030_rtc_reg_map[] = {
+ [REG_SECONDS_REG] = 0x00,
+ [REG_MINUTES_REG] = 0x01,
+ [REG_HOURS_REG] = 0x02,
+ [REG_DAYS_REG] = 0x03,
+ [REG_MONTHS_REG] = 0x04,
+ [REG_YEARS_REG] = 0x05,
+ [REG_WEEKS_REG] = 0x06,
+
+ [REG_ALARM_SECONDS_REG] = 0x08,
+ [REG_ALARM_MINUTES_REG] = 0x09,
+ [REG_ALARM_HOURS_REG] = 0x0A,
+ [REG_ALARM_DAYS_REG] = 0x0B,
+ [REG_ALARM_MONTHS_REG] = 0x0C,
+ [REG_ALARM_YEARS_REG] = 0x0D,
+
+ [REG_RTC_CTRL_REG] = 0x10,
+ [REG_RTC_STATUS_REG] = 0x11,
+ [REG_RTC_INTERRUPTS_REG] = 0x12,
+
+ [REG_RTC_COMP_LSB_REG] = 0x13,
+ [REG_RTC_COMP_MSB_REG] = 0x14,
+};
/* RTC_CTRL_REG bitfields */
#define BIT_RTC_CTRL_REG_STOP_RTC_M 0x01
@@ -84,6 +132,7 @@
#define ALL_TIME_REGS 6
/*----------------------------------------------------------------------*/
+static u8 *rtc_reg_map;
/*
* Supports 1 byte read from TWL4030 RTC register.
@@ -92,7 +141,7 @@ static int twl_rtc_read_u8(u8 *data, u8 reg)
{
int ret;
- ret = twl_i2c_read_u8(TWL_MODULE_RTC, data, reg);
+ ret = twl_i2c_read_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
pr_err("twl_rtc: Could not read TWL4030"
"register %X - error %d\n", reg, ret);
@@ -106,7 +155,7 @@ static int twl_rtc_write_u8(u8 data, u8 reg)
{
int ret;
- ret = twl_i2c_write_u8(TWL_MODULE_RTC, data, reg);
+ ret = twl_i2c_write_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
pr_err("twl_rtc: Could not write TWL4030"
"register %X - error %d\n", reg, ret);
@@ -202,7 +251,7 @@ static int twl_rtc_read_time(struct device *dev, struct
rtc_time *tm)
return ret;
ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
- REG_SECONDS_REG, ALL_TIME_REGS);
+ (rtc_reg_map[REG_SECONDS_REG]), ALL_TIME_REGS);
if (ret < 0) {
dev_err(dev, "rtc_read_time error %d\n", ret);
@@ -244,7 +293,7 @@ static int twl_rtc_set_time(struct device *dev, struct
rtc_time *tm)
/* update all the time registers in one shot */
ret = twl_i2c_write(TWL_MODULE_RTC, rtc_data,
- REG_SECONDS_REG, ALL_TIME_REGS);
+ (rtc_reg_map[REG_SECONDS_REG]), ALL_TIME_REGS);
if (ret < 0) {
dev_err(dev, "rtc_set_time error %d\n", ret);
goto out;
@@ -267,7 +316,7 @@ static int twl_rtc_read_alarm(struct device *dev, struct
rtc_wkalrm *alm)
int ret;
ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
- REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+ (rtc_reg_map[REG_ALARM_SECONDS_REG]), ALL_TIME_REGS);
if (ret < 0) {
dev_err(dev, "rtc_read_alarm error %d\n", ret);
return ret;
@@ -306,7 +355,7 @@ static int twl_rtc_set_alarm(struct device *dev, struct
rtc_wkalrm *alm)
/* update all the alarm registers in one shot */
ret = twl_i2c_write(TWL_MODULE_RTC, alarm_data,
- REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+ (rtc_reg_map[REG_ALARM_SECONDS_REG]), ALL_TIME_REGS);
if (ret) {
dev_err(dev, "rtc_set_alarm error %d\n", ret);
goto out;
@@ -352,6 +401,7 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
if (res)
goto out;
+if (is_class_twl4030()) {
/* Clear on Read enabled. RTC_IT bit of TWL4030_INT_PWR_ISR1
* needs 2 reads to clear the interrupt. One read is done in
* do_twl_pwrirq(). Doing the second read, to clear
@@ -367,6 +417,8 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
&rd_reg, TWL4030_INT_PWR_ISR1);
if (res)
goto out;
+}
+
/* Notify RTC core on event */
rtc_update_irq(rtc, 1, events);
@@ -438,7 +490,7 @@ static int __devinit twl_rtc_probe(struct platform_device
*pdev)
goto out2;
if (!(rd_reg & BIT_RTC_CTRL_REG_STOP_RTC_M)) {
- dev_info(&pdev->dev, "Enabling TWL4030-RTC.\n");
+ dev_info(&pdev->dev, "Enabling TWL-RTC.\n");
rd_reg = BIT_RTC_CTRL_REG_STOP_RTC_M;
ret = twl_rtc_write_u8(rd_reg, REG_RTC_CTRL_REG);
if (ret < 0)
@@ -526,6 +578,11 @@ static struct platform_driver twl4030rtc_driver = {
static int __init twl_rtc_init(void)
{
+ if (is_class_twl4030())
+ rtc_reg_map = (u8 *) twl4030_rtc_reg_map;
+ else
+ rtc_reg_map = (u8 *) twl6030_rtc_reg_map;
+
return platform_driver_register(&twl4030rtc_driver);
}
module_init(twl_rtc_init);
--
1.5.4.7
--
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