mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-08 22:45:43 +00:00
87 lines
2.7 KiB
Diff
87 lines
2.7 KiB
Diff
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From 3bc50cddbc5bc8c20c3bac50794a7ec80602ab16 Mon Sep 17 00:00:00 2001
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From: Wayne Zou <b36644@freescale.com>
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Date: Mon, 21 Nov 2011 15:06:54 +0800
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Subject: [PATCH] ENGR00162708 MX5: Add I2C dummy write and mask nONKEY event for i2c operation
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MX5: Add I2C dummy write when acessing DA9053 registers and mask nONKEY event
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for i2c operation before suspend
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Signed-off-by: Wayne Zou <b36644@freescale.com>
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(cherry picked from commit 0cc56da7dc91bbd5b6e9a51c1576daedce36093c)
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---
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arch/arm/mach-mx5/pm_da9053.c | 22 +++++++++++++++++++---
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1 files changed, 19 insertions(+), 3 deletions(-)
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diff --git a/arch/arm/mach-mx5/pm_da9053.c b/arch/arm/mach-mx5/pm_da9053.c
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index 63eda3a..7bb8915 100644
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--- a/arch/arm/mach-mx5/pm_da9053.c
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+++ b/arch/arm/mach-mx5/pm_da9053.c
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@@ -60,6 +60,7 @@ as the normal setting on Da9053 */
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#define DA9052_GPIO0809_SMD_SET 0x18
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#define DA9052_ID1415_SMD_SET 0x1
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#define DA9052_GPI9_IRQ_MASK 0x2
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+#define DA9052_IRQ_MASKB_ONKEY 0x1
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static u8 volt_settings[DA9052_LDO10_REG - DA9052_BUCKCORE_REG + 1];
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extern int pm_i2c_imx_xfer(struct i2c_msg *msgs, int num);
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@@ -67,7 +68,8 @@ extern int pm_i2c_imx_xfer(struct i2c_msg *msgs, int num);
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static void pm_da9053_read_reg(u8 reg, u8 *value)
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{
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unsigned char buf[2] = {0, 0};
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- struct i2c_msg i2cmsg[2];
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+ unsigned char dummy[2] = {0xff, 0xff};
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+ struct i2c_msg i2cmsg[3];
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buf[0] = reg;
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i2cmsg[0].addr = 0x48 ;
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i2cmsg[0].len = 1;
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@@ -83,16 +85,22 @@ static void pm_da9053_read_reg(u8 reg, u8 *value)
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pm_i2c_imx_xfer(i2cmsg, 2);
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*value = buf[1];
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+
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+ i2cmsg[2].addr = 0x48 ;
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+ i2cmsg[2].len = 2;
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+ i2cmsg[2].buf = &dummy[0];
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+ i2cmsg[2].flags = 0;
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+ pm_i2c_imx_xfer(i2cmsg, 1);
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}
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static void pm_da9053_write_reg(u8 reg, u8 value)
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{
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- unsigned char buf[2] = {0, 0};
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+ unsigned char buf[4] = {0, 0, 0xff, 0xff};
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struct i2c_msg i2cmsg[2];
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buf[0] = reg;
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buf[1] = value;
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i2cmsg[0].addr = 0x48 ;
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- i2cmsg[0].len = 2;
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+ i2cmsg[0].len = 4;
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i2cmsg[0].buf = &buf[0];
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i2cmsg[0].flags = 0;
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pm_i2c_imx_xfer(i2cmsg, 1);
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@@ -172,6 +180,10 @@ int da9053_suspend_cmd_hw(void)
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}
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clk_enable(i2c_clk);
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+ pm_da9053_read_reg(DA9052_IRQMASKB_REG, &data);
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+ data |= DA9052_IRQ_MASKB_ONKEY;
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+ pm_da9053_write_reg(DA9052_IRQMASKB_REG, data);
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+
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pm_da9053_preset_voltage();
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pm_da9053_write_reg(DA9052_CONTROLC_REG,
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DA9052_CONTROLC_SMD_SET);
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@@ -194,6 +206,10 @@ int da9053_suspend_cmd_hw(void)
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pm_da9053_write_reg(DA9052_SEQTIMER_REG, 0);
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/* pm_da9053_write_reg(DA9052_SEQB_REG, 0x1f); */
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+ pm_da9053_read_reg(DA9052_IRQMASKB_REG, &data);
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+ data &= ~DA9052_IRQ_MASKB_ONKEY;
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+ pm_da9053_write_reg(DA9052_IRQMASKB_REG, data);
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+
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clk_disable(i2c_clk);
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clk_put(i2c_clk);
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return 0;
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--
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1.5.4.4
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