]> git.sur5r.net Git - u-boot/commitdiff
pmic: Move pmic related code to ./drivers/power directory
authorŁukasz Majewski <l.majewski@samsung.com>
Tue, 13 Nov 2012 03:21:59 +0000 (03:21 +0000)
committerAnatolij Gustschin <agust@denx.de>
Wed, 14 Nov 2012 10:21:09 +0000 (11:21 +0100)
The PMIC framework has been moved to its more natural place
./drivers/power from ./drivers/misc directory.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
18 files changed:
Makefile
drivers/misc/Makefile
drivers/misc/pmic_core.c [deleted file]
drivers/misc/pmic_dialog.c [deleted file]
drivers/misc/pmic_fsl.c [deleted file]
drivers/misc/pmic_i2c.c [deleted file]
drivers/misc/pmic_max8997.c [deleted file]
drivers/misc/pmic_max8998.c [deleted file]
drivers/misc/pmic_spi.c [deleted file]
drivers/power/Makefile
drivers/power/pmic/Makefile [new file with mode: 0644]
drivers/power/pmic/pmic_max8997.c [new file with mode: 0644]
drivers/power/pmic/pmic_max8998.c [new file with mode: 0644]
drivers/power/pmic_core.c [new file with mode: 0644]
drivers/power/pmic_dialog.c [new file with mode: 0644]
drivers/power/pmic_fsl.c [new file with mode: 0644]
drivers/power/pmic_i2c.c [new file with mode: 0644]
drivers/power/pmic_spi.c [new file with mode: 0644]

index 5fa2fba5e3495a7df00847a2e31ac86f8b3cb495..f78656adff1773541315beb0173a3da8cd246735 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -293,7 +293,8 @@ LIBS-y += drivers/net/libnet.o
 LIBS-y += drivers/net/phy/libphy.o
 LIBS-y += drivers/pci/libpci.o
 LIBS-y += drivers/pcmcia/libpcmcia.o
-LIBS-y += drivers/power/libpower.o
+LIBS-y += drivers/power/libpower.o \
+       drivers/power/pmic/libpmic.o
 LIBS-y += drivers/spi/libspi.o
 LIBS-y += drivers/dfu/libdfu.o
 ifeq ($(CPU),mpc83xx)
index 271463cf142b25c1096cb46dbbb5a7b5fa338abb..cdec88b8fb999b8eccb1d0fbfc5fed27610d0bda 100644 (file)
@@ -34,13 +34,6 @@ COBJS-$(CONFIG_NS87308) += ns87308.o
 COBJS-$(CONFIG_PDSP188x) += pdsp188x.o
 COBJS-$(CONFIG_STATUS_LED) += status_led.o
 COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o
-COBJS-$(CONFIG_PMIC) += pmic_core.o
-COBJS-$(CONFIG_DIALOG_PMIC) += pmic_dialog.o
-COBJS-$(CONFIG_PMIC_FSL) += pmic_fsl.o
-COBJS-$(CONFIG_PMIC_I2C) += pmic_i2c.o
-COBJS-$(CONFIG_PMIC_SPI) += pmic_spi.o
-COBJS-$(CONFIG_PMIC_MAX8998) += pmic_max8998.o
-COBJS-$(CONFIG_PMIC_MAX8997) += pmic_max8997.o
 
 COBJS  := $(COBJS-y)
 SRCS   := $(COBJS:.o=.c)
diff --git a/drivers/misc/pmic_core.c b/drivers/misc/pmic_core.c
deleted file mode 100644 (file)
index 4066b15..0000000
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * Copyright (C) 2011 Samsung Electronics
- * Lukasz Majewski <l.majewski@samsung.com>
- *
- * (C) Copyright 2010
- * Stefano Babic, DENX Software Engineering, sbabic@denx.de
- *
- * (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 <common.h>
-#include <malloc.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <power/pmic.h>
-
-static LIST_HEAD(pmic_list);
-
-int check_reg(struct pmic *p, u32 reg)
-{
-       if (reg >= p->number_of_regs) {
-               printf("<reg num> = %d is invalid. Should be less than %d\n",
-                      reg, p->number_of_regs);
-               return -1;
-       }
-
-       return 0;
-}
-
-int pmic_set_output(struct pmic *p, u32 reg, int out, int on)
-{
-       u32 val;
-
-       if (pmic_reg_read(p, reg, &val))
-               return -1;
-
-       if (on)
-               val |= out;
-       else
-               val &= ~out;
-
-       if (pmic_reg_write(p, reg, val))
-               return -1;
-
-       return 0;
-}
-
-static void pmic_show_info(struct pmic *p)
-{
-       printf("PMIC: %s\n", p->name);
-}
-
-static int pmic_dump(struct pmic *p)
-{
-       int i, ret;
-       u32 val;
-
-       if (!p) {
-               puts("Wrong PMIC name!\n");
-               return -1;
-       }
-
-       pmic_show_info(p);
-       for (i = 0; i < p->number_of_regs; i++) {
-               ret = pmic_reg_read(p, i, &val);
-               if (ret)
-                       puts("PMIC: Registers dump failed\n");
-
-               if (!(i % 8))
-                       printf("\n0x%02x: ", i);
-
-               printf("%08x ", val);
-       }
-       puts("\n");
-       return 0;
-}
-
-struct pmic *pmic_alloc(void)
-{
-       struct pmic *p;
-
-       p = calloc(sizeof(*p), 1);
-       if (!p) {
-               printf("%s: No available memory for allocation!\n", __func__);
-               return NULL;
-       }
-
-       list_add_tail(&p->list, &pmic_list);
-
-       debug("%s: new pmic struct: 0x%p\n", __func__, p);
-
-       return p;
-}
-
-struct pmic *pmic_get(const char *s)
-{
-       struct pmic *p;
-
-       list_for_each_entry(p, &pmic_list, list) {
-               if (strcmp(p->name, s) == 0) {
-                       debug("%s: pmic %s -> 0x%p\n", __func__, p->name, p);
-                       return p;
-               }
-       }
-
-       return NULL;
-}
-
-static void pmic_list_names(void)
-{
-       struct pmic *p;
-
-       puts("PMIC devices:\n");
-       list_for_each_entry(p, &pmic_list, list) {
-               printf("name: %s\n", p->name);
-       }
-}
-
-int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
-       u32 ret, reg, val;
-       struct pmic *p;
-       char *cmd;
-
-       /* at least two arguments please */
-       if (argc < 2)
-               return CMD_RET_USAGE;
-
-       cmd = argv[1];
-
-       if (strcmp(cmd, "list") == 0) {
-               pmic_list_names();
-               return CMD_RET_SUCCESS;
-       }
-
-       if (strcmp(cmd, "dump") == 0) {
-               p = pmic_get(argv[2]);
-               if (!p)
-                       return CMD_RET_FAILURE;
-               if (pmic_dump(p))
-                       return CMD_RET_FAILURE;
-               return CMD_RET_SUCCESS;
-       }
-
-       if (strcmp(cmd, "read") == 0) {
-               if (argc < 4)
-                       return CMD_RET_USAGE;
-
-               reg = simple_strtoul(argv[3], NULL, 16);
-               p = pmic_get(argv[2]);
-               if (!p)
-                       return CMD_RET_FAILURE;
-
-               ret = pmic_reg_read(p, reg, &val);
-
-               if (ret)
-                       puts("PMIC: Register read failed\n");
-
-               printf("\n0x%02x: 0x%08x\n", reg, val);
-
-               return CMD_RET_SUCCESS;
-       }
-
-       if (strcmp(cmd, "write") == 0) {
-               if (argc < 5)
-                       return CMD_RET_USAGE;
-
-               reg = simple_strtoul(argv[3], NULL, 16);
-               val = simple_strtoul(argv[4], NULL, 16);
-               p = pmic_get(argv[2]);
-               if (!p)
-                       return CMD_RET_FAILURE;
-               pmic_reg_write(p, reg, val);
-
-               return CMD_RET_SUCCESS;
-       }
-
-       /* No subcommand found */
-       return CMD_RET_SUCCESS;
-}
-
-U_BOOT_CMD(
-       pmic,   CONFIG_SYS_MAXARGS, 1, do_pmic,
-       "PMIC",
-       "list - list available PMICs\n"
-       "pmic dump name - dump named PMIC registers\n"
-       "pmic name read <reg> - read register\n"
-       "pmic name write <reg> <value> - write register"
-);
diff --git a/drivers/misc/pmic_dialog.c b/drivers/misc/pmic_dialog.c
deleted file mode 100644 (file)
index d7ebd15..0000000
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- *  Copyright (C) 2011 Samsung Electronics
- *  Lukasz Majewski <l.majewski@samsung.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 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.
- */
-
-#include <common.h>
-#include <power/pmic.h>
-#include <dialog_pmic.h>
-#include <errno.h>
-
-int pmic_dialog_init(unsigned char bus)
-{
-       static const char name[] = "DIALOG_PMIC";
-       struct pmic *p = pmic_alloc();
-
-       if (!p) {
-               printf("%s: POWER allocation error!\n", __func__);
-               return -ENOMEM;
-       }
-
-       p->name = name;
-       p->number_of_regs = DIALOG_NUM_OF_REGS;
-
-       p->interface = PMIC_I2C;
-       p->hw.i2c.addr = CONFIG_SYS_DIALOG_PMIC_I2C_ADDR;
-       p->hw.i2c.tx_num = 1;
-       p->bus = bus;
-
-       return 0;
-}
diff --git a/drivers/misc/pmic_fsl.c b/drivers/misc/pmic_fsl.c
deleted file mode 100644 (file)
index 0275fd9..0000000
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- *  Copyright (C) 2011 Samsung Electronics
- *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
-#include <spi.h>
-#include <power/pmic.h>
-#include <fsl_pmic.h>
-#include <errno.h>
-
-#if defined(CONFIG_PMIC_SPI)
-static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
-{
-       return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
-}
-#endif
-
-int pmic_init(unsigned char bus)
-{
-       static const char name[] = "FSL_PMIC";
-       struct pmic *p = pmic_alloc();
-
-       if (!p) {
-               printf("%s: POWER allocation error!\n", __func__);
-               return -ENOMEM;
-       }
-
-       p->name = name;
-       p->number_of_regs = PMIC_NUM_OF_REGS;
-
-#if defined(CONFIG_PMIC_SPI)
-       p->interface = PMIC_SPI;
-       p->bus = CONFIG_FSL_PMIC_BUS;
-       p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
-       p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
-       p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
-       p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
-       p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
-       p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
-#elif defined(CONFIG_PMIC_I2C)
-       p->interface = PMIC_I2C;
-       p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
-       p->hw.i2c.tx_num = 3;
-       p->bus = bus;
-#else
-#error "You must select CONFIG_PMIC_SPI or CONFIG_PMIC_I2C"
-#endif
-
-       return 0;
-}
diff --git a/drivers/misc/pmic_i2c.c b/drivers/misc/pmic_i2c.c
deleted file mode 100644 (file)
index 3e5a784..0000000
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2011 Samsung Electronics
- * Lukasz Majewski <l.majewski@samsung.com>
- *
- * (C) Copyright 2010
- * Stefano Babic, DENX Software Engineering, sbabic@denx.de
- *
- * (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 <common.h>
-#include <linux/types.h>
-#include <power/pmic.h>
-#include <i2c.h>
-#include <compiler.h>
-
-int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
-{
-       unsigned char buf[4] = { 0 };
-
-       if (check_reg(p, reg))
-               return -1;
-
-       switch (pmic_i2c_tx_num) {
-       case 3:
-               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
-                       buf[2] = (cpu_to_le32(val) >> 16) & 0xff;
-                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
-                       buf[0] = cpu_to_le32(val) & 0xff;
-               } else {
-                       buf[0] = (cpu_to_le32(val) >> 16) & 0xff;
-                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
-                       buf[2] = cpu_to_le32(val) & 0xff;
-               }
-               break;
-       case 2:
-               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
-                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
-                       buf[0] = cpu_to_le32(val) & 0xff;
-               } else {
-                       buf[0] = (cpu_to_le32(val) >> 8) & 0xff;
-                       buf[1] = cpu_to_le32(val) & 0xff;
-               }
-               break;
-       case 1:
-               buf[0] = cpu_to_le32(val) & 0xff;
-               break;
-       default:
-               printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
-               return -1;
-       }
-
-       if (i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
-               return -1;
-
-       return 0;
-}
-
-int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
-{
-       unsigned char buf[4] = { 0 };
-       u32 ret_val = 0;
-
-       if (check_reg(p, reg))
-               return -1;
-
-       if (i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
-               return -1;
-
-       switch (pmic_i2c_tx_num) {
-       case 3:
-               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
-                       ret_val = le32_to_cpu(buf[2] << 16
-                                             | buf[1] << 8 | buf[0]);
-               else
-                       ret_val = le32_to_cpu(buf[0] << 16 |
-                                             buf[1] << 8 | buf[2]);
-               break;
-       case 2:
-               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
-                       ret_val = le32_to_cpu(buf[1] << 8 | buf[0]);
-               else
-                       ret_val = le32_to_cpu(buf[0] << 8 | buf[1]);
-               break;
-       case 1:
-               ret_val = le32_to_cpu(buf[0]);
-               break;
-       default:
-               printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
-               return -1;
-       }
-       memcpy(val, &ret_val, sizeof(ret_val));
-
-       return 0;
-}
-
-int pmic_probe(struct pmic *p)
-{
-       I2C_SET_BUS(p->bus);
-       debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
-       if (i2c_probe(pmic_i2c_addr)) {
-               printf("Can't find PMIC:%s\n", p->name);
-               return -1;
-       }
-
-       return 0;
-}
diff --git a/drivers/misc/pmic_max8997.c b/drivers/misc/pmic_max8997.c
deleted file mode 100644 (file)
index 7fe1b53..0000000
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- *  Copyright (C) 2012 Samsung Electronics
- *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
-#include <power/pmic.h>
-#include <power/max8997_pmic.h>
-#include <i2c.h>
-#include <errno.h>
-
-int pmic_init(unsigned char bus)
-{
-       static const char name[] = "MAX8997_PMIC";
-       struct pmic *p = pmic_alloc();
-
-       if (!p) {
-               printf("%s: POWER allocation error!\n", __func__);
-               return -ENOMEM;
-       }
-
-       puts("Board PMIC init\n");
-
-       p->name = name;
-       p->interface = PMIC_I2C;
-       p->number_of_regs = PMIC_NUM_OF_REGS;
-       p->hw.i2c.addr = MAX8997_I2C_ADDR;
-       p->hw.i2c.tx_num = 1;
-       p->bus = bus;
-
-       return 0;
-}
diff --git a/drivers/misc/pmic_max8998.c b/drivers/misc/pmic_max8998.c
deleted file mode 100644 (file)
index 452e1c8..0000000
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- *  Copyright (C) 2011 Samsung Electronics
- *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
-#include <power/pmic.h>
-#include <power/max8998_pmic.h>
-#include <errno.h>
-
-int pmic_init(unsigned char bus)
-{
-       static const char name[] = "MAX8998_PMIC";
-       struct pmic *p = pmic_alloc();
-
-       if (!p) {
-               printf("%s: POWER allocation error!\n", __func__);
-               return -ENOMEM;
-       }
-
-       puts("Board PMIC init\n");
-
-       p->name = name;
-       p->interface = PMIC_I2C;
-       p->number_of_regs = PMIC_NUM_OF_REGS;
-       p->hw.i2c.addr = MAX8998_I2C_ADDR;
-       p->hw.i2c.tx_num = 1;
-       p->bus = bus;
-
-       return 0;
-}
diff --git a/drivers/misc/pmic_spi.c b/drivers/misc/pmic_spi.c
deleted file mode 100644 (file)
index 27488ea..0000000
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * Copyright (C) 2011 Samsung Electronics
- * Lukasz Majewski <l.majewski@samsung.com>
- *
- * (C) Copyright 2010
- * Stefano Babic, DENX Software Engineering, sbabic@denx.de
- *
- * (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 <common.h>
-#include <linux/types.h>
-#include <power/pmic.h>
-#include <spi.h>
-
-static struct spi_slave *slave;
-
-void pmic_spi_free(struct spi_slave *slave)
-{
-       if (slave)
-               spi_free_slave(slave);
-}
-
-struct spi_slave *pmic_spi_probe(struct pmic *p)
-{
-       return spi_setup_slave(p->bus,
-               p->hw.spi.cs,
-               p->hw.spi.clk,
-               p->hw.spi.mode);
-}
-
-static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
-{
-       u32 pmic_tx, pmic_rx;
-       u32 tmp;
-
-       if (!slave) {
-               slave = pmic_spi_probe(p);
-
-               if (!slave)
-                       return -1;
-       }
-
-       if (check_reg(p, reg))
-               return -1;
-
-       if (spi_claim_bus(slave))
-               return -1;
-
-       pmic_tx = p->hw.spi.prepare_tx(reg, val, write);
-
-       tmp = cpu_to_be32(pmic_tx);
-
-       if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
-                       pmic_spi_flags)) {
-               spi_release_bus(slave);
-               return -1;
-       }
-
-       if (write) {
-               pmic_tx = p->hw.spi.prepare_tx(reg, val, 0);
-               tmp = cpu_to_be32(pmic_tx);
-               if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
-                       pmic_spi_flags)) {
-                       spi_release_bus(slave);
-                       return -1;
-               }
-       }
-
-       spi_release_bus(slave);
-       *val = cpu_to_be32(pmic_rx);
-
-       return 0;
-}
-
-int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
-{
-       if (pmic_reg(p, reg, &val, 1))
-               return -1;
-
-       return 0;
-}
-
-int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
-{
-       if (pmic_reg(p, reg, val, 0))
-               return -1;
-
-       return 0;
-}
index 6bf388cb7d59036fd2922eb51dd89d09328af05d..7fc5554b496714b942f96003b959fb8394811777 100644 (file)
@@ -23,7 +23,7 @@
 
 include $(TOPDIR)/config.mk
 
-LIB    := $(obj)libpower.o
+LIB    := $(obj)libpower.o
 
 COBJS-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
 COBJS-$(CONFIG_TPS6586X_POWER) += tps6586x.o
@@ -31,9 +31,15 @@ COBJS-$(CONFIG_TWL4030_POWER)        += twl4030.o
 COBJS-$(CONFIG_TWL6030_POWER)  += twl6030.o
 COBJS-$(CONFIG_TWL6035_POWER)  += twl6035.o
 
+COBJS-$(CONFIG_PMIC) += pmic_core.o
+COBJS-$(CONFIG_DIALOG_PMIC) += pmic_dialog.o
+COBJS-$(CONFIG_PMIC_FSL) += pmic_fsl.o
+COBJS-$(CONFIG_PMIC_I2C) += pmic_i2c.o
+COBJS-$(CONFIG_PMIC_SPI) += pmic_spi.o
+
 COBJS  := $(COBJS-y)
-SRCS   := $(COBJS:.o=.c)
-OBJS   := $(addprefix $(obj),$(COBJS))
+SRCS   := $(COBJS:.o=.c)
+OBJS   := $(addprefix $(obj),$(COBJS))
 
 all:   $(LIB)
 
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
new file mode 100644 (file)
index 0000000..8ccd6e9
--- /dev/null
@@ -0,0 +1,48 @@
+#
+# Copyright (C) 2012 Samsung Electronics
+# Lukasz Majewski <l.majewski@samsung.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 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 $(TOPDIR)/config.mk
+
+LIB    := $(obj)libpmic.o
+
+COBJS-$(CONFIG_PMIC_MAX8998) += pmic_max8998.o
+COBJS-$(CONFIG_PMIC_MAX8997) += pmic_max8997.o
+
+COBJS  := $(COBJS-y)
+SRCS   := $(COBJS:.o=.c)
+OBJS   := $(addprefix $(obj),$(COBJS))
+
+all:   $(LIB)
+
+$(LIB):        $(obj).depend $(OBJS)
+       $(call cmd_link_o_target, $(OBJS))
+
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+########################################################################
diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c
new file mode 100644 (file)
index 0000000..7fe1b53
--- /dev/null
@@ -0,0 +1,50 @@
+/*
+ *  Copyright (C) 2012 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
+#include <power/pmic.h>
+#include <power/max8997_pmic.h>
+#include <i2c.h>
+#include <errno.h>
+
+int pmic_init(unsigned char bus)
+{
+       static const char name[] = "MAX8997_PMIC";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       puts("Board PMIC init\n");
+
+       p->name = name;
+       p->interface = PMIC_I2C;
+       p->number_of_regs = PMIC_NUM_OF_REGS;
+       p->hw.i2c.addr = MAX8997_I2C_ADDR;
+       p->hw.i2c.tx_num = 1;
+       p->bus = bus;
+
+       return 0;
+}
diff --git a/drivers/power/pmic/pmic_max8998.c b/drivers/power/pmic/pmic_max8998.c
new file mode 100644 (file)
index 0000000..452e1c8
--- /dev/null
@@ -0,0 +1,49 @@
+/*
+ *  Copyright (C) 2011 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
+#include <power/pmic.h>
+#include <power/max8998_pmic.h>
+#include <errno.h>
+
+int pmic_init(unsigned char bus)
+{
+       static const char name[] = "MAX8998_PMIC";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       puts("Board PMIC init\n");
+
+       p->name = name;
+       p->interface = PMIC_I2C;
+       p->number_of_regs = PMIC_NUM_OF_REGS;
+       p->hw.i2c.addr = MAX8998_I2C_ADDR;
+       p->hw.i2c.tx_num = 1;
+       p->bus = bus;
+
+       return 0;
+}
diff --git a/drivers/power/pmic_core.c b/drivers/power/pmic_core.c
new file mode 100644 (file)
index 0000000..4066b15
--- /dev/null
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics
+ * Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * (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 <common.h>
+#include <malloc.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <power/pmic.h>
+
+static LIST_HEAD(pmic_list);
+
+int check_reg(struct pmic *p, u32 reg)
+{
+       if (reg >= p->number_of_regs) {
+               printf("<reg num> = %d is invalid. Should be less than %d\n",
+                      reg, p->number_of_regs);
+               return -1;
+       }
+
+       return 0;
+}
+
+int pmic_set_output(struct pmic *p, u32 reg, int out, int on)
+{
+       u32 val;
+
+       if (pmic_reg_read(p, reg, &val))
+               return -1;
+
+       if (on)
+               val |= out;
+       else
+               val &= ~out;
+
+       if (pmic_reg_write(p, reg, val))
+               return -1;
+
+       return 0;
+}
+
+static void pmic_show_info(struct pmic *p)
+{
+       printf("PMIC: %s\n", p->name);
+}
+
+static int pmic_dump(struct pmic *p)
+{
+       int i, ret;
+       u32 val;
+
+       if (!p) {
+               puts("Wrong PMIC name!\n");
+               return -1;
+       }
+
+       pmic_show_info(p);
+       for (i = 0; i < p->number_of_regs; i++) {
+               ret = pmic_reg_read(p, i, &val);
+               if (ret)
+                       puts("PMIC: Registers dump failed\n");
+
+               if (!(i % 8))
+                       printf("\n0x%02x: ", i);
+
+               printf("%08x ", val);
+       }
+       puts("\n");
+       return 0;
+}
+
+struct pmic *pmic_alloc(void)
+{
+       struct pmic *p;
+
+       p = calloc(sizeof(*p), 1);
+       if (!p) {
+               printf("%s: No available memory for allocation!\n", __func__);
+               return NULL;
+       }
+
+       list_add_tail(&p->list, &pmic_list);
+
+       debug("%s: new pmic struct: 0x%p\n", __func__, p);
+
+       return p;
+}
+
+struct pmic *pmic_get(const char *s)
+{
+       struct pmic *p;
+
+       list_for_each_entry(p, &pmic_list, list) {
+               if (strcmp(p->name, s) == 0) {
+                       debug("%s: pmic %s -> 0x%p\n", __func__, p->name, p);
+                       return p;
+               }
+       }
+
+       return NULL;
+}
+
+static void pmic_list_names(void)
+{
+       struct pmic *p;
+
+       puts("PMIC devices:\n");
+       list_for_each_entry(p, &pmic_list, list) {
+               printf("name: %s\n", p->name);
+       }
+}
+
+int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       u32 ret, reg, val;
+       struct pmic *p;
+       char *cmd;
+
+       /* at least two arguments please */
+       if (argc < 2)
+               return CMD_RET_USAGE;
+
+       cmd = argv[1];
+
+       if (strcmp(cmd, "list") == 0) {
+               pmic_list_names();
+               return CMD_RET_SUCCESS;
+       }
+
+       if (strcmp(cmd, "dump") == 0) {
+               p = pmic_get(argv[2]);
+               if (!p)
+                       return CMD_RET_FAILURE;
+               if (pmic_dump(p))
+                       return CMD_RET_FAILURE;
+               return CMD_RET_SUCCESS;
+       }
+
+       if (strcmp(cmd, "read") == 0) {
+               if (argc < 4)
+                       return CMD_RET_USAGE;
+
+               reg = simple_strtoul(argv[3], NULL, 16);
+               p = pmic_get(argv[2]);
+               if (!p)
+                       return CMD_RET_FAILURE;
+
+               ret = pmic_reg_read(p, reg, &val);
+
+               if (ret)
+                       puts("PMIC: Register read failed\n");
+
+               printf("\n0x%02x: 0x%08x\n", reg, val);
+
+               return CMD_RET_SUCCESS;
+       }
+
+       if (strcmp(cmd, "write") == 0) {
+               if (argc < 5)
+                       return CMD_RET_USAGE;
+
+               reg = simple_strtoul(argv[3], NULL, 16);
+               val = simple_strtoul(argv[4], NULL, 16);
+               p = pmic_get(argv[2]);
+               if (!p)
+                       return CMD_RET_FAILURE;
+               pmic_reg_write(p, reg, val);
+
+               return CMD_RET_SUCCESS;
+       }
+
+       /* No subcommand found */
+       return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+       pmic,   CONFIG_SYS_MAXARGS, 1, do_pmic,
+       "PMIC",
+       "list - list available PMICs\n"
+       "pmic dump name - dump named PMIC registers\n"
+       "pmic name read <reg> - read register\n"
+       "pmic name write <reg> <value> - write register"
+);
diff --git a/drivers/power/pmic_dialog.c b/drivers/power/pmic_dialog.c
new file mode 100644 (file)
index 0000000..d7ebd15
--- /dev/null
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (C) 2011 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.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 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.
+ */
+
+#include <common.h>
+#include <power/pmic.h>
+#include <dialog_pmic.h>
+#include <errno.h>
+
+int pmic_dialog_init(unsigned char bus)
+{
+       static const char name[] = "DIALOG_PMIC";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       p->name = name;
+       p->number_of_regs = DIALOG_NUM_OF_REGS;
+
+       p->interface = PMIC_I2C;
+       p->hw.i2c.addr = CONFIG_SYS_DIALOG_PMIC_I2C_ADDR;
+       p->hw.i2c.tx_num = 1;
+       p->bus = bus;
+
+       return 0;
+}
diff --git a/drivers/power/pmic_fsl.c b/drivers/power/pmic_fsl.c
new file mode 100644 (file)
index 0000000..0275fd9
--- /dev/null
@@ -0,0 +1,69 @@
+/*
+ *  Copyright (C) 2011 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.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 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 <common.h>
+#include <spi.h>
+#include <power/pmic.h>
+#include <fsl_pmic.h>
+#include <errno.h>
+
+#if defined(CONFIG_PMIC_SPI)
+static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
+{
+       return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
+}
+#endif
+
+int pmic_init(unsigned char bus)
+{
+       static const char name[] = "FSL_PMIC";
+       struct pmic *p = pmic_alloc();
+
+       if (!p) {
+               printf("%s: POWER allocation error!\n", __func__);
+               return -ENOMEM;
+       }
+
+       p->name = name;
+       p->number_of_regs = PMIC_NUM_OF_REGS;
+
+#if defined(CONFIG_PMIC_SPI)
+       p->interface = PMIC_SPI;
+       p->bus = CONFIG_FSL_PMIC_BUS;
+       p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
+       p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
+       p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
+       p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
+       p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
+       p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
+#elif defined(CONFIG_PMIC_I2C)
+       p->interface = PMIC_I2C;
+       p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
+       p->hw.i2c.tx_num = 3;
+       p->bus = bus;
+#else
+#error "You must select CONFIG_PMIC_SPI or CONFIG_PMIC_I2C"
+#endif
+
+       return 0;
+}
diff --git a/drivers/power/pmic_i2c.c b/drivers/power/pmic_i2c.c
new file mode 100644 (file)
index 0000000..3e5a784
--- /dev/null
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics
+ * Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * (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 <common.h>
+#include <linux/types.h>
+#include <power/pmic.h>
+#include <i2c.h>
+#include <compiler.h>
+
+int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
+{
+       unsigned char buf[4] = { 0 };
+
+       if (check_reg(p, reg))
+               return -1;
+
+       switch (pmic_i2c_tx_num) {
+       case 3:
+               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
+                       buf[2] = (cpu_to_le32(val) >> 16) & 0xff;
+                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
+                       buf[0] = cpu_to_le32(val) & 0xff;
+               } else {
+                       buf[0] = (cpu_to_le32(val) >> 16) & 0xff;
+                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
+                       buf[2] = cpu_to_le32(val) & 0xff;
+               }
+               break;
+       case 2:
+               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG) {
+                       buf[1] = (cpu_to_le32(val) >> 8) & 0xff;
+                       buf[0] = cpu_to_le32(val) & 0xff;
+               } else {
+                       buf[0] = (cpu_to_le32(val) >> 8) & 0xff;
+                       buf[1] = cpu_to_le32(val) & 0xff;
+               }
+               break;
+       case 1:
+               buf[0] = cpu_to_le32(val) & 0xff;
+               break;
+       default:
+               printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
+               return -1;
+       }
+
+       if (i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
+               return -1;
+
+       return 0;
+}
+
+int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
+{
+       unsigned char buf[4] = { 0 };
+       u32 ret_val = 0;
+
+       if (check_reg(p, reg))
+               return -1;
+
+       if (i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
+               return -1;
+
+       switch (pmic_i2c_tx_num) {
+       case 3:
+               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
+                       ret_val = le32_to_cpu(buf[2] << 16
+                                             | buf[1] << 8 | buf[0]);
+               else
+                       ret_val = le32_to_cpu(buf[0] << 16 |
+                                             buf[1] << 8 | buf[2]);
+               break;
+       case 2:
+               if (p->sensor_byte_order == PMIC_SENSOR_BYTE_ORDER_BIG)
+                       ret_val = le32_to_cpu(buf[1] << 8 | buf[0]);
+               else
+                       ret_val = le32_to_cpu(buf[0] << 8 | buf[1]);
+               break;
+       case 1:
+               ret_val = le32_to_cpu(buf[0]);
+               break;
+       default:
+               printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
+               return -1;
+       }
+       memcpy(val, &ret_val, sizeof(ret_val));
+
+       return 0;
+}
+
+int pmic_probe(struct pmic *p)
+{
+       I2C_SET_BUS(p->bus);
+       debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
+       if (i2c_probe(pmic_i2c_addr)) {
+               printf("Can't find PMIC:%s\n", p->name);
+               return -1;
+       }
+
+       return 0;
+}
diff --git a/drivers/power/pmic_spi.c b/drivers/power/pmic_spi.c
new file mode 100644 (file)
index 0000000..27488ea
--- /dev/null
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics
+ * Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de
+ *
+ * (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 <common.h>
+#include <linux/types.h>
+#include <power/pmic.h>
+#include <spi.h>
+
+static struct spi_slave *slave;
+
+void pmic_spi_free(struct spi_slave *slave)
+{
+       if (slave)
+               spi_free_slave(slave);
+}
+
+struct spi_slave *pmic_spi_probe(struct pmic *p)
+{
+       return spi_setup_slave(p->bus,
+               p->hw.spi.cs,
+               p->hw.spi.clk,
+               p->hw.spi.mode);
+}
+
+static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
+{
+       u32 pmic_tx, pmic_rx;
+       u32 tmp;
+
+       if (!slave) {
+               slave = pmic_spi_probe(p);
+
+               if (!slave)
+                       return -1;
+       }
+
+       if (check_reg(p, reg))
+               return -1;
+
+       if (spi_claim_bus(slave))
+               return -1;
+
+       pmic_tx = p->hw.spi.prepare_tx(reg, val, write);
+
+       tmp = cpu_to_be32(pmic_tx);
+
+       if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
+                       pmic_spi_flags)) {
+               spi_release_bus(slave);
+               return -1;
+       }
+
+       if (write) {
+               pmic_tx = p->hw.spi.prepare_tx(reg, val, 0);
+               tmp = cpu_to_be32(pmic_tx);
+               if (spi_xfer(slave, pmic_spi_bitlen, &tmp, &pmic_rx,
+                       pmic_spi_flags)) {
+                       spi_release_bus(slave);
+                       return -1;
+               }
+       }
+
+       spi_release_bus(slave);
+       *val = cpu_to_be32(pmic_rx);
+
+       return 0;
+}
+
+int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
+{
+       if (pmic_reg(p, reg, &val, 1))
+               return -1;
+
+       return 0;
+}
+
+int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
+{
+       if (pmic_reg(p, reg, val, 0))
+               return -1;
+
+       return 0;
+}