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Date: Fri, 9 Dec 2011 10:08:49 -0800
From: dirk.brandewie@...il.com
To: linux-kernel@...r.kernel.org
Cc: cbouatmailru@...il.com, dg77.kim@...sung.com,
kyungmin.park@...sung.com, myungjoo.ham@...sung.com,
Jason.Wortham@...im-ic.com,
Dirk Brandewie <dirk.brandewie@...il.com>
Subject: [PATCH v2 6/6] x86-mrst: Add battery fuel guage platform data
From: Dirk Brandewie <dirk.brandewie@...il.com>
Add platform data to configure the MAX17042 at POR. The accuracy of
the MAX17042 is improved by initializing the fuel gauge with the
battery characterization data.
Signed-off-by: Dirk Brandewie <dirk.brandewie@...il.com>
---
arch/x86/platform/mrst/mrst.c | 53 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index b1489a0..bb6aafa 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -22,6 +22,8 @@
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/gpio_keys.h>
+#include <linux/power_supply.h>
+#include <linux/power/max17042_battery.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
@@ -484,6 +486,56 @@ static void __init *max7315_platform_data(void *info)
return max7315;
}
+#define NTC_47K_TGAIN 0xE4E4
+#define NTC_47K_TOFF 0x2F1D
+
+static void *max17042_platform_data(void *info)
+{
+ struct i2c_board_info *i2c_info = (struct i2c_board_info *)info;
+ static struct max17042_platform_data platform_data;
+ struct i2c_board_info *i2c_info = (struct i2c_board_info *)info;
+ int intr;
+ static struct max17042_config_data config_data = {
+ .tgain = NTC_47K_TGAIN,
+ .toff = NTC_47K_TOFF,
+ .config = 0x2210,
+ .learn_cfg = 0x0076,
+ .filter_cfg = 0x87A4,
+ .relax_cfg = 0x506B,
+ .rcomp0 = 0x0092,
+ .tcompc0 = 0x0B19,
+ .empty_tempco = 0x2D51,
+ .kempty0 = 0x0D83,
+ .fullcap = 14727,
+ .design_cap = 14727,
+ .fullcapnom = 14727,
+ .cell_technology = POWER_SUPPLY_TECHNOLOGY_LION,
+ .cell_char_tbl = {
+ /* Data to be written from 0x80h */
+ 0xABB0, 0xB2B0, 0xBB10, 0xBBB0, 0xBC10, 0xBC70, 0xBD00, 0xBD70,
+ 0xBDC0, 0xBE10, 0xC010, 0xC130, 0xC4A0, 0xC9C0, 0xCD10, 0xD090,
+ /* Data to be written from 0x90h */
+ 0x0620, 0x0420, 0x1900, 0x3600, 0x3DA0, 0x2CA0, 0x3C20, 0x3500,
+ 0x3500, 0x0440, 0x1240, 0x0DF0, 0x08F0, 0x0870, 0x07F0, 0x07F0,
+ /* Data to be written from 0xA0h */
+ 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100,
+ 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100,
+ },
+ };
+
+ intr = get_gpio_by_name("max17042");
+
+ if (intr != -1)
+ i2c_info->irq = intr + MRST_IRQ_OFFSET;
+
+ strcpy(i2c_info->type, "max17042");
+ platform_data.enable_por_init = 1;
+ platform_data.config_data = &config_data;
+ platform_data.enable_current_sense = 1;
+
+ return &platform_data;
+}
+
static void __init *emc1403_platform_data(void *info)
{
static short intr2nd_pdata;
@@ -649,6 +701,7 @@ static const struct devs_id __initconst device_ids[] = {
{"spi_max3111", SFI_DEV_TYPE_SPI, 0, &max3111_platform_data},
{"i2c_max7315", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data},
{"i2c_max7315_2", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data},
+ {"max17042", SFI_DEV_TYPE_I2C, 0, &max17042_platform_data},
{"emc1403", SFI_DEV_TYPE_I2C, 1, &emc1403_platform_data},
{"i2c_accel", SFI_DEV_TYPE_I2C, 0, &lis331dl_platform_data},
{"pmic_audio", SFI_DEV_TYPE_IPC, 1, &no_platform_data},
--
1.7.7.3
--
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