[U-Boot] [PATCH 4/8] ARMV7: Add support for the TWL6030 I2C power chip used in OMAP4 systems

Steve Sakoman
2010-07-21T19:25:25Z

This patch add the basic infrastructure for the TWL6030 driver and enables
support in the two existing OMAP4 boards, Panda and OMAP4430 SDP

Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
drivers/power/Makefile | 1 +
drivers/power/twl6030.c | 77 +++++++++++++++++++++++++++++++++
include/configs/omap4_panda.h | 3 +
include/configs/omap4_sdp4430.h | 3 +
include/twl6030.h | 90 +++++++++++++++++++++++++++++++++++++++
5 files changed, 174 insertions(+), 0 deletions(-)
create mode 100644 drivers/power/twl6030.c
create mode 100644 include/twl6030.h

diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index dd06514..db53173 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libpower.a

COBJS-$(CONFIG_TWL4030_POWER) += twl4030.o
+COBJS-$(CONFIG_TWL6030_POWER) += twl6030.o

COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c
new file mode 100644
index 0000000..b47992b
--- /dev/null
+++ b/drivers/power/twl6030.c
@@ -0,0 +1,77 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <config.h>
+#ifdef CONFIG_TWL6030_POWER
+
+#include <twl6030.h>
+
+/* Functions to read and write from TWL6030 */
+static inline int twl6030_i2c_write_u8(u8 chip_no, u8 val, u8 reg)
+{
+ return i2c_write(chip_no, reg, 1, &val, 1);
+}
+
+static inline int twl6030_i2c_read_u8(u8 chip_no, u8 *val, u8 reg)
+{
+ return i2c_read(chip_no, reg, 1, val, 1);
+}
+
+void twl6030_start_usb_charging(void)
+{
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VICHRG_1500,
+ CHARGERUSB_VICHRG);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CIN_LIMIT_NONE,
+ CHARGERUSB_CINLIMIT);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MBAT_TEMP,
+ CONTROLLER_INT_MASK);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, MASK_MCHARGERUSB_THMREG,
+ CHARGERUSB_INT_MASK);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_VOREG_4P0,
+ CHARGERUSB_VOREG);
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL2_VITERM_100,
+ CHARGERUSB_CTRL2);
+ /* Enable USB charging */
+ twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1_EN_CHARGER,
+ CONTROLLER_CTRL1);
+ return;
+}
+
+void twl6030_init_battery_charging(void)
+{
+ twl6030_start_usb_charging();
+ return;
+}
+
+void twl6030_usb_device_settings()
+{
+ u8 data = 0;
+
+ /* Select APP Group and set state to ON */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, 0x21, VUSB_CFG_STATE);
+
+ twl6030_i2c_read_u8(TWL6030_CHIP_PM, &data, MISC2);
+ data |= 0x10;
+
+ /* Select the input supply for VBUS regulator */
+ twl6030_i2c_write_u8(TWL6030_CHIP_PM, data, MISC2);
+}
+#endif
diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h
index 0fb1ad3..4bec00b 100644
--- a/include/configs/omap4_panda.h
+++ b/include/configs/omap4_panda.h
@@ -103,6 +103,9 @@
#define CONFIG_DRIVER_OMAP34XX_I2C 1
#define CONFIG_I2C_MULTI_BUS 1

+/* TWL6030 */
+#define CONFIG_TWL6030_POWER 1
+
/* MMC */
#define CONFIG_MMC 1
#define CONFIG_OMAP3_MMC 1
diff --git a/include/configs/omap4_sdp4430.h b/include/configs/omap4_sdp4430.h
index ef5272b..c18e71a 100644
--- a/include/configs/omap4_sdp4430.h
+++ b/include/configs/omap4_sdp4430.h
@@ -104,6 +104,9 @@
#define CONFIG_DRIVER_OMAP34XX_I2C 1
#define CONFIG_I2C_MULTI_BUS 1

+/* TWL6030 */
+#define CONFIG_TWL6030_POWER 1
+
/* MMC */
#define CONFIG_MMC 1
#define CONFIG_OMAP3_MMC 1
diff --git a/include/twl6030.h b/include/twl6030.h
new file mode 100644
index 0000000..479dbf0
--- /dev/null
+++ b/include/twl6030.h
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+/* I2C chip addresses */
+#define TWL6030_CHIP_PM 0x48
+
+#define TWL6030_CHIP_USB 0x49
+#define TWL6030_CHIP_ADC 0x49
+#define TWL6030_CHIP_CHARGER 0x49
+#define TWL6030_CHIP_PWM 0x49
+
+/* Battery CHARGER REGISTERS */
+#define CONTROLLER_INT_MASK 0xE0
+#define CONTROLLER_CTRL1 0xE1
+#define CONTROLLER_WDG 0xE2
+#define CONTROLLER_STAT1 0xE3
+#define CHARGERUSB_INT_STATUS 0xE4
+#define CHARGERUSB_INT_MASK 0xE5
+#define CHARGERUSB_STATUS_INT1 0xE6
+#define CHARGERUSB_STATUS_INT2 0xE7
+#define CHARGERUSB_CTRL1 0xE8
+#define CHARGERUSB_CTRL2 0xE9
+#define CHARGERUSB_CTRL3 0xEA
+#define CHARGERUSB_STAT1 0xEB
+#define CHARGERUSB_VOREG 0xEC
+#define CHARGERUSB_VICHRG 0xED
+#define CHARGERUSB_CINLIMIT 0xEE
+#define CHARGERUSB_CTRLLIMIT1 0xEF
+
+/* CHARGERUSB_VICHRG */
+#define CHARGERUSB_VICHRG_500 0x4
+#define CHARGERUSB_VICHRG_1500 0xE
+/* CHARGERUSB_CINLIMIT */
+#define CHARGERUSB_CIN_LIMIT_100 0x1
+#define CHARGERUSB_CIN_LIMIT_300 0x5
+#define CHARGERUSB_CIN_LIMIT_500 0x9
+#define CHARGERUSB_CIN_LIMIT_NONE 0xF
+/* CONTROLLER_INT_MASK */
+#define MVAC_FAULT (1 << 6)
+#define MAC_EOC (1 << 5)
+#define MBAT_REMOVED (1 << 4)
+#define MFAULT_WDG (1 << 3)
+#define MBAT_TEMP (1 << 2)
+#define MVBUS_DET (1 << 1)
+#define MVAC_DET (1 << 0)
+/* CHARGERUSB_INT_MASK */
+#define MASK_MCURRENT_TERM (1 << 3)
+#define MASK_MCHARGERUSB_STAT (1 << 2)
+#define MASK_MCHARGERUSB_THMREG (1 << 1)
+#define MASK_MCHARGERUSB_FAULT (1 << 0)
+/* CHARGERUSB_VOREG */
+#define CHARGERUSB_VOREG_3P52 0x01
+#define CHARGERUSB_VOREG_4P0 0x19
+#define CHARGERUSB_VOREG_4P2 0x23
+#define CHARGERUSB_VOREG_4P76 0x3F
+/* CHARGERUSB_CTRL2 */
+#define CHARGERUSB_CTRL2_VITERM_50 (0 << 5)
+#define CHARGERUSB_CTRL2_VITERM_100 (1 << 5)
+#define CHARGERUSB_CTRL2_VITERM_150 (2 << 5)
+/* CONTROLLER_CTRL1 */
+#define CONTROLLER_CTRL1_EN_CHARGER (1 << 4)
+#define CONTROLLER_CTRL1_SEL_CHARGER (1 << 3)
+
+#define VUSB_CFG_STATE 0xA2
+#define MISC2 0xE5
+
+void twl6030_init_battery_charging(void);
+void twl6030_usb_device_settings(void);
--
1.7.0.4