mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-28 22:57:37 +00:00
86 lines
2.7 KiB
Diff
86 lines
2.7 KiB
Diff
From 3bc50cddbc5bc8c20c3bac50794a7ec80602ab16 Mon Sep 17 00:00:00 2001
|
|
From: Wayne Zou <b36644@freescale.com>
|
|
Date: Mon, 21 Nov 2011 15:06:54 +0800
|
|
Subject: [PATCH] ENGR00162708 MX5: Add I2C dummy write and mask nONKEY event for i2c operation
|
|
|
|
MX5: Add I2C dummy write when acessing DA9053 registers and mask nONKEY event
|
|
for i2c operation before suspend
|
|
|
|
Signed-off-by: Wayne Zou <b36644@freescale.com>
|
|
(cherry picked from commit 0cc56da7dc91bbd5b6e9a51c1576daedce36093c)
|
|
---
|
|
arch/arm/mach-mx5/pm_da9053.c | 22 +++++++++++++++++++---
|
|
1 files changed, 19 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/arch/arm/mach-mx5/pm_da9053.c b/arch/arm/mach-mx5/pm_da9053.c
|
|
index 63eda3a..7bb8915 100644
|
|
--- a/arch/arm/mach-mx5/pm_da9053.c
|
|
+++ b/arch/arm/mach-mx5/pm_da9053.c
|
|
@@ -60,6 +60,7 @@ as the normal setting on Da9053 */
|
|
#define DA9052_GPIO0809_SMD_SET 0x18
|
|
#define DA9052_ID1415_SMD_SET 0x1
|
|
#define DA9052_GPI9_IRQ_MASK 0x2
|
|
+#define DA9052_IRQ_MASKB_ONKEY 0x1
|
|
|
|
static u8 volt_settings[DA9052_LDO10_REG - DA9052_BUCKCORE_REG + 1];
|
|
extern int pm_i2c_imx_xfer(struct i2c_msg *msgs, int num);
|
|
@@ -67,7 +68,8 @@ extern int pm_i2c_imx_xfer(struct i2c_msg *msgs, int num);
|
|
static void pm_da9053_read_reg(u8 reg, u8 *value)
|
|
{
|
|
unsigned char buf[2] = {0, 0};
|
|
- struct i2c_msg i2cmsg[2];
|
|
+ unsigned char dummy[2] = {0xff, 0xff};
|
|
+ struct i2c_msg i2cmsg[3];
|
|
buf[0] = reg;
|
|
i2cmsg[0].addr = 0x48 ;
|
|
i2cmsg[0].len = 1;
|
|
@@ -83,16 +85,22 @@ static void pm_da9053_read_reg(u8 reg, u8 *value)
|
|
|
|
pm_i2c_imx_xfer(i2cmsg, 2);
|
|
*value = buf[1];
|
|
+
|
|
+ i2cmsg[2].addr = 0x48 ;
|
|
+ i2cmsg[2].len = 2;
|
|
+ i2cmsg[2].buf = &dummy[0];
|
|
+ i2cmsg[2].flags = 0;
|
|
+ pm_i2c_imx_xfer(i2cmsg, 1);
|
|
}
|
|
|
|
static void pm_da9053_write_reg(u8 reg, u8 value)
|
|
{
|
|
- unsigned char buf[2] = {0, 0};
|
|
+ unsigned char buf[4] = {0, 0, 0xff, 0xff};
|
|
struct i2c_msg i2cmsg[2];
|
|
buf[0] = reg;
|
|
buf[1] = value;
|
|
i2cmsg[0].addr = 0x48 ;
|
|
- i2cmsg[0].len = 2;
|
|
+ i2cmsg[0].len = 4;
|
|
i2cmsg[0].buf = &buf[0];
|
|
i2cmsg[0].flags = 0;
|
|
pm_i2c_imx_xfer(i2cmsg, 1);
|
|
@@ -172,6 +180,10 @@ int da9053_suspend_cmd_hw(void)
|
|
}
|
|
clk_enable(i2c_clk);
|
|
|
|
+ pm_da9053_read_reg(DA9052_IRQMASKB_REG, &data);
|
|
+ data |= DA9052_IRQ_MASKB_ONKEY;
|
|
+ pm_da9053_write_reg(DA9052_IRQMASKB_REG, data);
|
|
+
|
|
pm_da9053_preset_voltage();
|
|
pm_da9053_write_reg(DA9052_CONTROLC_REG,
|
|
DA9052_CONTROLC_SMD_SET);
|
|
@@ -194,6 +206,10 @@ int da9053_suspend_cmd_hw(void)
|
|
pm_da9053_write_reg(DA9052_SEQTIMER_REG, 0);
|
|
/* pm_da9053_write_reg(DA9052_SEQB_REG, 0x1f); */
|
|
|
|
+ pm_da9053_read_reg(DA9052_IRQMASKB_REG, &data);
|
|
+ data &= ~DA9052_IRQ_MASKB_ONKEY;
|
|
+ pm_da9053_write_reg(DA9052_IRQMASKB_REG, data);
|
|
+
|
|
clk_disable(i2c_clk);
|
|
clk_put(i2c_clk);
|
|
return 0;
|
|
--
|
|
1.5.4.4
|
|
|