Merge branch 'master' of git://git.denx.de/u-boot-i2c

1 files changed, 115 insertions, 0 deletions

diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c
new file mode 100644
index 0000000..eb066cb
--- /dev/null
+++ b/drivers/power/twl4030.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2009 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix at windriver.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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
+ *
+ * twl4030_power_reset_init is derived from code on omapzoom,
+ * git://git.omapzoom.com/repo/u-boot.git
+ *
+ * Copyright (C) 2007-2009 Texas Instruments, Inc.
+ *
+ * twl4030_power_init is from cpu/omap3/common.c, power_init_r
+ *
+ * (C) Copyright 2004-2008
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *	Sunil Kumar <sunilsaini05 at gmail.com>
+ *	Shashi Ranjan <shashiranjanmca05 at gmail.com>
+ *
+ * Derived from Beagle Board and 3430 SDP code by
+ *	Richard Woodruff <r-woodruff2 at ti.com>
+ *	Syed Mohammed Khasim <khasim at ti.com>
+ *
+ */
+
+#include <twl4030.h>
+
+/*
+ * Power Reset
+ */
+void twl4030_power_reset_init(void)
+{
+	u8 val = 0;
+	if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, &val,
+				TWL4030_PM_MASTER_P1_SW_EVENTS)) {
+		printf("Error:TWL4030: failed to read the power register\n");
+		printf("Could not initialize hardware reset\n");
+	} else {
+		val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
+		if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, val,
+					 TWL4030_PM_MASTER_P1_SW_EVENTS)) {
+			printf("Error:TWL4030: failed to write the power register\n");
+			printf("Could not initialize hardware reset\n");
+		}
+	}
+}
+
+
+/*
+ * Power Init
+ */
+#define DEV_GRP_P1		0x20
+#define VAUX3_VSEL_28		0x03
+#define DEV_GRP_ALL		0xE0
+#define VPLL2_VSEL_18		0x05
+#define VDAC_VSEL_18		0x03
+
+void twl4030_power_init(void)
+{
+	unsigned char byte;
+
+	/* set VAUX3 to 2.8V */
+	byte = DEV_GRP_P1;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VAUX3_DEV_GRP);
+	byte = VAUX3_VSEL_28;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VAUX3_DEDICATED);
+
+	/* set VPLL2 to 1.8V */
+	byte = DEV_GRP_ALL;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VPLL2_DEV_GRP);
+	byte = VPLL2_VSEL_18;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
+
+	/* set VDAC to 1.8V */
+	byte = DEV_GRP_P1;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VDAC_DEV_GRP);
+	byte = VDAC_VSEL_18;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VDAC_DEDICATED);
+}
+
+#define VMMC1_VSEL_30		0x02
+
+void twl4030_power_mmc_init(void)
+{
+	unsigned char byte;
+
+	byte = DEV_GRP_P1;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VMMC1_DEV_GRP);
+
+	/* 3 Volts */
+	byte = VMMC1_VSEL_30;
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
+			     TWL4030_PM_RECEIVER_VMMC1_DEDICATED);
+}