Added SPI driver for the Power Management Controller
used with i.MX51 Processor.
Signed-off-by: Stefano Babic <sba...@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
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, sba...@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
--
1.6.3.3
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