Patchwork [U-Boot] Added MC13892VK Power Management driver

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Submitter Stefano Babic
Date March 16, 2010, 4:18 p.m.
Message ID <1268756287-2030-1-git-send-email-sbabic@denx.de>
Download mbox | patch
Permalink /patch/71731/
State Accepted
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Stefano Babic - March 16, 2010, 4:18 p.m.
Added SPI driver for the Power Management  Controller
used with i.MX51 Processor.

Signed-off-by: Stefano Babic <sbabic@denx.de>
---
 drivers/misc/Makefile           |    1 +
 drivers/misc/mc13892_spi_pmic.c |  134 +++++++++++++++++++++++++++++++++++
 include/mc13892.h               |  149 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 284 insertions(+), 0 deletions(-)
 create mode 100644 drivers/misc/mc13892_spi_pmic.c
 create mode 100644 include/mc13892.h

Patch

diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index f6df60f..5847262 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -31,6 +31,7 @@  COBJS-$(CONFIG_FSL_LAW) += fsl_law.o
 COBJS-$(CONFIG_NS87308) += ns87308.o
 COBJS-$(CONFIG_STATUS_LED) += status_led.o
 COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o
+COBJS-$(CONFIG_MC13892_SPI_PMIC) += mc13892_spi_pmic.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
diff --git a/drivers/misc/mc13892_spi_pmic.c b/drivers/misc/mc13892_spi_pmic.c
new file mode 100644
index 0000000..f095fcc
--- /dev/null
+++ b/drivers/misc/mc13892_spi_pmic.c
@@ -0,0 +1,134 @@ 
+/*
+ * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ * 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 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
+ */
+
+#include <config.h>
+#include <common.h>
+#include <spi.h>
+#include <asm/errno.h>
+#include <linux/types.h>
+
+u32 mc13892_reg(struct spi_slave *slave, u32 reg, u32 val, u32 write)
+{
+	char tx[4];
+	char rx[4];
+	int i;
+	u32 tmp, pmic_tx, pmic_rx;
+
+	if (!slave)
+		return 0;
+
+	if (reg > 63 || write > 1) {
+		printf("<reg num> = %d is invalid. Should be less then 63\n",
+			reg);
+		return 0;
+	}
+	pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF);
+	debug("reg=0x%x, val=0x%08x\n", reg, pmic_tx);
+
+	tmp = pmic_tx;
+	for (i = 0; i < 4; i++) {
+		tx[i] = (tmp & 0xFF000000) >> 24;
+		tmp <<= 8;
+	}
+
+	if (spi_xfer(slave, 4 << 3, tx, rx,
+			SPI_XFER_BEGIN | SPI_XFER_END)) {
+		return -1;
+	}
+
+	if (write) {
+		tx[0] &= ~(1 << 31);
+		if (spi_xfer(slave, 4 << 3, tx, rx,
+			SPI_XFER_BEGIN | SPI_XFER_END)) {
+			return -1;
+		}
+	}
+
+	pmic_rx = (rx[0] << 24) | (rx[1] << 16) | (rx[2] << 8) | rx[3];
+	debug("reg=0x%x, val_read=0x%08x 0x%x 0x%x 0x%x 0x%x\n",
+		reg, pmic_rx, rx[0], rx[1], rx[2], rx[3]);
+	return pmic_rx;
+}
+
+void mc13892_show_pmic_info(struct spi_slave *slave)
+{
+	volatile u32 rev_id;
+
+	if (!slave)
+		return;
+
+	rev_id = mc13892_reg(slave, 7, 0, 0);
+	debug("PMIC ID: 0x%08x [Rev: ", rev_id);
+	switch (rev_id & 0x1F) {
+	case 0x1:
+		puts("1.0");
+		break;
+	case 0x9:
+		puts("1.1");
+		break;
+	case 0xA:
+		puts("1.2");
+		break;
+	case 0x10:
+		puts("2.0");
+		break;
+	case 0x11:
+		puts("2.1");
+		break;
+	case 0x18:
+		puts("3.0");
+		break;
+	case 0x19:
+		puts("3.1");
+		break;
+	case 0x1A:
+		puts("3.2");
+		break;
+	case 0x2:
+		puts("3.2A");
+		break;
+	case 0x1B:
+		puts("3.3");
+		break;
+	case 0x1D:
+		puts("3.5");
+		break;
+	default:
+		puts("unknown");
+		break;
+	}
+	puts("]\n");
+}
+
+struct spi_slave *mc13892_spi_probe(void)
+{
+	return spi_setup_slave(CONFIG_MC13892_SPI_PMIC_BUS,
+		CONFIG_MC13892_SPI_PMIC_CS,
+		CONFIG_MC13892_SPI_PMIC_CLK,
+		CONFIG_MC13892_SPI_PMIC_MODE);
+}
+
+void mc13892_spi_free(struct spi_slave *slave)
+{
+	if (slave)
+		spi_free_slave(slave);
+}
diff --git a/include/mc13892.h b/include/mc13892.h
new file mode 100644
index 0000000..b57e07b
--- /dev/null
+++ b/include/mc13892.h
@@ -0,0 +1,149 @@ 
+/*
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * 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 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
+ */
+
+#ifndef __MC13892_H__
+#define __MC13892_H__
+
+enum {
+	MC13892_REG_INT_STATUS0 = 0,
+	MC13892_REG_INT_MASK0,
+	MC13892_REG_INT_SENSE0,
+	MC13892_REG_INT_STATUS1,
+	MC13892_REG_INT_MASK1,
+	MC13892_REG_INT_SENSE1,
+	MC13892_REG_PU_MODE_S,
+	MC13892_REG_IDENTIFICATION,
+	MC13892_REG_UNUSED0,
+	MC13892_REG_ACC0,
+	MC13892_REG_ACC1,		/*10 */
+	MC13892_REG_UNUSED1,
+	MC13892_REG_UNUSED2,
+	MC13892_REG_POWER_CTL0,
+	MC13892_REG_POWER_CTL1,
+	MC13892_REG_POWER_CTL2,
+	MC13892_REG_REGEN_ASSIGN,
+	MC13892_REG_UNUSED3,
+	MC13892_REG_MEM_A,
+	MC13892_REG_MEM_B,
+	MC13892_REG_RTC_TIME,		/*20 */
+	MC13892_REG_RTC_ALARM,
+	MC13892_REG_RTC_DAY,
+	MC13892_REG_RTC_DAY_ALARM,
+	MC13892_REG_SW_0,
+	MC13892_REG_SW_1,
+	MC13892_REG_SW_2,
+	MC13892_REG_SW_3,
+	MC13892_REG_SW_4,
+	MC13892_REG_SW_5,
+	MC13892_REG_SETTING_0,		/*30 */
+	MC13892_REG_SETTING_1,
+	MC13892_REG_MODE_0,
+	MC13892_REG_MODE_1,
+	MC13892_REG_POWER_MISC,
+	MC13892_REG_UNUSED4,
+	MC13892_REG_UNUSED5,
+	MC13892_REG_UNUSED6,
+	MC13892_REG_UNUSED7,
+	MC13892_REG_UNUSED8,
+	MC13892_REG_UNUSED9,		/*40 */
+	MC13892_REG_UNUSED10,
+	MC13892_REG_UNUSED11,
+	MC13892_REG_ADC0,
+	MC13892_REG_ADC1,
+	MC13892_REG_ADC2,
+	MC13892_REG_ADC3,
+	MC13892_REG_ADC4,
+	MC13892_REG_CHARGE,
+	MC13892_REG_USB0,
+	MC13892_REG_USB1,		/*50 */
+	MC13892_REG_LED_CTL0,
+	MC13892_REG_LED_CTL1,
+	MC13892_REG_LED_CTL2,
+	MC13892_REG_LED_CTL3,
+	MC13892_REG_UNUSED12,
+	MC13892_REG_UNUSED13,
+	MC13892_REG_TRIM0,
+	MC13892_REG_TRIM1,
+	MC13892_REG_TEST0,
+	MC13892_REG_TEST1,		/*60 */
+	MC13892_REG_TEST2,
+	MC13892_REG_TEST3,
+	MC13892_REG_TEST4,
+};
+
+/* MC13892_REG_POWER_MISC */
+
+#define PWGT1SPIEN	(1 << 15)
+#define PWGT2SPIEN	(1 << 16)
+#define PWUP		(1 << 25)
+
+/* MC13892_REG_CHARGE */
+
+#define VCHRG0		0
+#define VCHRG1		(1 << 1)
+#define VCHRG2		(1 << 2)
+#define ICHRG0		(1 << 3)
+#define ICHRG1		(1 << 4)
+#define ICHRG2		(1 << 5)
+#define ICHRG3		(1 << 6)
+#define ICHRGTR0	(1 << 7)
+#define ICHRGTR1	(1 << 8)
+#define ICHRGTR2	(1 << 9)
+#define FETOVRD		(1 << 10)
+#define FETCTRL		(1 << 11)
+#define RVRSMODE	(1 << 13)
+#define OVCTRL0		(1 << 15)
+#define OVCTRL1		(1 << 16)
+#define UCHEN		(1 << 17)
+#define CHRGLEDEN	(1 << 18)
+#define CHRGRAWPDEN	(1 << 19)
+
+/* MC13892_REG_SETTING_0/1 */
+#define VO_1_20V	0
+#define VO_1_30V	1
+#define VO_1_50V	2
+#define VO_1_80V	3
+#define VO_1_10V	4
+#define VO_2_00V	5
+#define VO_2_77V	6
+#define VO_2_40V	7
+
+#define VIOL		0
+#define VDIG		4
+#define VGEN		6
+
+#define mc13892_reg_write(slave, reg, value) mc13892_reg(slave, reg, value, 1)
+#define mc13892_reg_read(slave, reg)	mc13892_reg(slave, reg, 0, 0)
+
+#define set_mc13892_regulator(slave, reg, field, value) do { \
+	mc13892_reg_write(slave, reg, (value << field)) \
+	} while (0)
+
+struct spi_slave *mc13892_spi_probe(void);
+void mc13892_spi_free(struct spi_slave *slave);
+u32 mc13892_reg(struct spi_slave *slave, u32 reg, u32 val, u32 write);
+void mc13892_show_pmic_info(struct spi_slave *slave);
+
+#endif