This patch adds rtc-twl4030 driver specific code.
Signed-off-by: Girish S G <girishsg@xxxxxx>
---
arch/arm/configs/omap_3430sdp_defconfig | 17 ++++++++
arch/arm/mach-omap2/board-3430sdp.c | 64 ++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 1 deletion(-)
Index: linux-omap-2.6/arch/arm/configs/omap_3430sdp_defconfig
===================================================================
--- linux-omap-2.6.orig/arch/arm/configs/omap_3430sdp_defconfig 2008-06-26
17:24:52.000000000 +0530
+++ linux-omap-2.6/arch/arm/configs/omap_3430sdp_defconfig 2008-06-27
15:40:56.000000000 +0530
@@ -1061,8 +1061,23 @@
CONFIG_MMC_OMAP_HS=y
# CONFIG_MMC_SPI is not set
# CONFIG_NEW_LEDS is not set
+
+#
+# RTC interface
+#
CONFIG_RTC_LIB=y
-# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+
+#
+# I2C RTC driver
+#
+CONFIG_RTC_DRV_TWL4030=y
+
# CONFIG_UIO is not set
#
Index: linux-omap-2.6/arch/arm/mach-omap2/board-3430sdp.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/board-3430sdp.c 2008-06-26
17:24:52.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/board-3430sdp.c 2008-06-27
15:49:37.000000000 +0530
@@ -40,9 +40,11 @@
#include <asm/arch/keypad.h>
#include <asm/arch/dma.h>
#include <asm/arch/gpmc.h>
+#include <linux/i2c/twl4030-rtc.h>
#include <asm/io.h>
#include <asm/delay.h>
+#include <asm/arch/control.h>
#define SDP3430_SMC91X_CS 3
@@ -50,6 +52,8 @@
#define ENABLE_VAUX3_DEV_GRP 0x20
+#define TWL4030_MSECURE_GPIO 22
+
static struct resource sdp3430_smc91x_resources[] = {
[0] = {
.start = OMAP34XX_ETHR_START,
@@ -122,6 +126,63 @@
static int ts_gpio;
+#ifdef CONFIG_RTC_DRV_TWL4030
+static int twl4030_rtc_init(void)
+{
+ int ret = 0;
+
+ /* 3430ES2.0 doesn't have msecure/gpio-22 line connected to T2 */
+ if (is_device_type_gp() && is_sil_rev_less_than(OMAP3430_REV_ES2_0)) {
+ u32 msecure_pad_config_reg = omap_ctrl_base_get() + 0xA3C;
+ int mux_mask = 0x04;
+ u16 tmp;
+
+ ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
+ if (ret < 0) {
+ printk(KERN_ERR "twl4030_rtc_init: can't"
+ "reserve GPIO:%d !\n", TWL4030_MSECURE_GPIO);
+ goto out;
+ }
+ /*
+ * TWL4030 will be in secure mode if msecure line from OMAP
+ * is low. Make msecure line high in order to change the
+ * TWL4030 RTC time and calender registers.
+ */
+ omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);
+
+ tmp = omap_readw(msecure_pad_config_reg);
+ tmp &= 0xF8; /* To enable mux mode 03/04 = GPIO_RTC */
+ tmp |= mux_mask;/* To enable mux mode 03/04 = GPIO_RTC */
+ omap_writew(tmp, msecure_pad_config_reg);
+
+ omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
+ }
+out:
+ return ret;
+}
+
+static void twl4030_rtc_exit(void)
+{
+ if (is_device_type_gp() &&
+ is_sil_rev_less_than(OMAP3430_REV_ES2_0)) {
+ omap_free_gpio(TWL4030_MSECURE_GPIO);
+ }
+}
+
+static struct twl4030rtc_platform_data sdp3430_twl4030rtc_data = {
+ .init = &twl4030_rtc_init,
+ .exit = &twl4030_rtc_exit,
+};
+
+static struct platform_device sdp3430_twl4030rtc_device = {
+ .name = "twl4030_rtc",
+ .id = -1,
+ .dev = {
+ .platform_data = &sdp3430_twl4030rtc_data,
+ },
+};
+#endif
+
/**
* @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
*
@@ -212,6 +273,9 @@
&sdp3430_smc91x_device,
&sdp3430_kp_device,
&sdp3430_lcd_device,
+#ifdef CONFIG_RTC_DRV_TWL4030
+ &sdp3430_twl4030rtc_device,
+#endif
};
static inline void __init sdp3430_init_smc91x(void)
--
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