diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Makefile | 6 | ||||
| -rw-r--r-- | drivers/misc/fsl_pmic.c | 235 | ||||
| -rw-r--r-- | drivers/misc/pmic_core.c | 147 | ||||
| -rw-r--r-- | drivers/misc/pmic_fsl.c | 66 | ||||
| -rw-r--r-- | drivers/misc/pmic_i2c.c | 92 | ||||
| -rw-r--r-- | drivers/misc/pmic_max8998.c | 43 | ||||
| -rw-r--r-- | drivers/misc/pmic_spi.c | 109 |
7 files changed, 462 insertions, 236 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index b152486..a709707 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -28,13 +28,17 @@ LIB := $(obj)libmisc.o COBJS-$(CONFIG_ALI152X) += ali512x.o COBJS-$(CONFIG_DS4510) += ds4510.o COBJS-$(CONFIG_FSL_LAW) += fsl_law.o -COBJS-$(CONFIG_FSL_PMIC) += fsl_pmic.o COBJS-$(CONFIG_GPIO_LED) += gpio_led.o COBJS-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o COBJS-$(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-$(CONFIG_PMIC_FSL) += pmic_fsl.o +COBJS-$(CONFIG_PMIC_I2C) += pmic_i2c.o +COBJS-$(CONFIG_PMIC_SPI) += pmic_spi.o +COBJS-$(CONFIG_PMIC_MAX8998) += pmic_max8998.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/misc/fsl_pmic.c b/drivers/misc/fsl_pmic.c deleted file mode 100644 index 23255a5..0000000 --- a/drivers/misc/fsl_pmic.c +++ /dev/null @@ -1,235 +0,0 @@ -/* - * (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 <asm/errno.h> -#include <linux/types.h> -#include <fsl_pmic.h> - -static int check_param(u32 reg, u32 write) -{ - if (reg > 63 || write > 1) { - printf("<reg num> = %d is invalid. Should be less then 63\n", - reg); - return -1; - } - - return 0; -} - -#ifdef CONFIG_FSL_PMIC_I2C -#include <i2c.h> - -u32 pmic_reg(u32 reg, u32 val, u32 write) -{ - unsigned char buf[4] = { 0 }; - u32 ret_val = 0; - - if (check_param(reg, write)) - return -1; - - if (write) { - buf[0] = (val >> 16) & 0xff; - buf[1] = (val >> 8) & 0xff; - buf[2] = (val) & 0xff; - if (i2c_write(CONFIG_SYS_FSL_PMIC_I2C_ADDR, reg, 1, buf, 3)) - return -1; - } else { - if (i2c_read(CONFIG_SYS_FSL_PMIC_I2C_ADDR, reg, 1, buf, 3)) - return -1; - ret_val = buf[0] << 16 | buf[1] << 8 | buf[2]; - } - - return ret_val; -} -#else /* SPI interface */ -#include <spi.h> -static struct spi_slave *slave; - -struct spi_slave *pmic_spi_probe(void) -{ - return spi_setup_slave(CONFIG_FSL_PMIC_BUS, - CONFIG_FSL_PMIC_CS, - CONFIG_FSL_PMIC_CLK, - CONFIG_FSL_PMIC_MODE); -} - -void pmic_spi_free(struct spi_slave *slave) -{ - if (slave) - spi_free_slave(slave); -} - -u32 pmic_reg(u32 reg, u32 val, u32 write) -{ - u32 pmic_tx, pmic_rx; - u32 tmp; - - if (!slave) { - slave = pmic_spi_probe(); - - if (!slave) - return -1; - } - - if (check_param(reg, write)) - return -1; - - if (spi_claim_bus(slave)) - return -1; - - pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF); - - tmp = cpu_to_be32(pmic_tx); - - if (spi_xfer(slave, 4 << 3, &tmp, &pmic_rx, - SPI_XFER_BEGIN | SPI_XFER_END)) { - spi_release_bus(slave); - return -1; - } - - if (write) { - pmic_tx &= ~(1 << 31); - tmp = cpu_to_be32(pmic_tx); - if (spi_xfer(slave, 4 << 3, &tmp, &pmic_rx, - SPI_XFER_BEGIN | SPI_XFER_END)) { - spi_release_bus(slave); - return -1; - } - } - - spi_release_bus(slave); - return cpu_to_be32(pmic_rx); -} -#endif - -void pmic_reg_write(u32 reg, u32 value) -{ - pmic_reg(reg, value, 1); -} - -u32 pmic_reg_read(u32 reg) -{ - return pmic_reg(reg, 0, 0); -} - -void pmic_show_pmic_info(void) -{ - u32 rev_id; - - rev_id = pmic_reg_read(REG_IDENTIFICATION); - printf("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"); -} - -static void pmic_dump(int numregs) -{ - u32 val; - int i; - - pmic_show_pmic_info(); - for (i = 0; i < numregs; i++) { - val = pmic_reg_read(i); - if (!(i % 8)) - printf ("\n0x%02x: ", i); - printf("%08x ", val); - } - puts("\n"); -} - -int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - char *cmd; - int nregs; - u32 val; - - /* at least two arguments please */ - if (argc < 2) - return cmd_usage(cmdtp); - - cmd = argv[1]; - if (strcmp(cmd, "dump") == 0) { - if (argc < 3) - return cmd_usage(cmdtp); - - nregs = simple_strtoul(argv[2], NULL, 16); - pmic_dump(nregs); - return 0; - } - if (strcmp(cmd, "write") == 0) { - if (argc < 4) - return cmd_usage(cmdtp); - - nregs = simple_strtoul(argv[2], NULL, 16); - val = simple_strtoul(argv[3], NULL, 16); - pmic_reg_write(nregs, val); - return 0; - } - /* No subcommand found */ - return 1; -} - -U_BOOT_CMD( - pmic, CONFIG_SYS_MAXARGS, 1, do_pmic, - "Freescale PMIC (Atlas)", - "dump [numregs] - dump registers\n" - "pmic write <reg> <value> - write register" -); diff --git a/drivers/misc/pmic_core.c b/drivers/misc/pmic_core.c new file mode 100644 index 0000000..5d62a56 --- /dev/null +++ b/drivers/misc/pmic_core.c @@ -0,0 +1,147 @@ +/* + * 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 <pmic.h> + +static struct pmic pmic; + +int check_reg(u32 reg) +{ + if (reg >= pmic.number_of_regs) { + printf("<reg num> = %d is invalid. Should be less than %d\n", + reg, pmic.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 void pmic_dump(struct pmic *p) +{ + int i, ret; + u32 val; + + 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"); +} + +struct pmic *get_pmic(void) +{ + return &pmic; +} + +int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + u32 ret, reg, val; + char *cmd; + + struct pmic *p = &pmic; + + /* at least two arguments please */ + if (argc < 2) + return cmd_usage(cmdtp); + + cmd = argv[1]; + if (strcmp(cmd, "dump") == 0) { + pmic_dump(p); + return 0; + } + + if (strcmp(cmd, "read") == 0) { + if (argc < 3) + return cmd_usage(cmdtp); + + reg = simple_strtoul(argv[2], NULL, 16); + + ret = pmic_reg_read(p, reg, &val); + + if (ret) + puts("PMIC: Register read failed\n"); + + printf("\n0x%02x: 0x%08x\n", reg, val); + + return 0; + } + + if (strcmp(cmd, "write") == 0) { + if (argc < 4) + return cmd_usage(cmdtp); + + reg = simple_strtoul(argv[2], NULL, 16); + val = simple_strtoul(argv[3], NULL, 16); + + pmic_reg_write(p, reg, val); + + return 0; + } + + /* No subcommand found */ + return 1; +} + +U_BOOT_CMD( + pmic, CONFIG_SYS_MAXARGS, 1, do_pmic, + "PMIC", + "dump - dump PMIC registers\n" + "pmic read <reg> - read register\n" + "pmic write <reg> <value> - write register" +); diff --git a/drivers/misc/pmic_fsl.c b/drivers/misc/pmic_fsl.c new file mode 100644 index 0000000..b6e809a --- /dev/null +++ b/drivers/misc/pmic_fsl.c @@ -0,0 +1,66 @@ +/* + * 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 <pmic.h> +#include <fsl_pmic.h> + +#if defined(CONFIG_PMIC_SPI) +static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write) +{ + if ((val == NULL) && (write)) + return *val & ~(1 << 31); + else + return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF); +} +#endif + +int pmic_init(void) +{ + struct pmic *p = get_pmic(); + static const char name[] = "FSL_PMIC"; + + 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 = I2C_PMIC; +#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 new file mode 100644 index 0000000..ad55d64 --- /dev/null +++ b/drivers/misc/pmic_i2c.c @@ -0,0 +1,92 @@ +/* + * 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 <pmic.h> +#include <i2c.h> + +int pmic_reg_write(struct pmic *p, u32 reg, u32 val) +{ + unsigned char buf[4] = { 0 }; + + if (check_reg(reg)) + return -1; + + switch (pmic_i2c_tx_num) { + case 3: + buf[0] = (val >> 16) & 0xff; + buf[1] = (val >> 8) & 0xff; + buf[2] = val & 0xff; + break; + case 1: + buf[0] = val & 0xff; + break; + } + + 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(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: + ret_val = buf[0] << 16 | buf[1] << 8 | buf[2]; + break; + case 1: + ret_val = buf[0]; + break; + } + memcpy(val, &ret_val, sizeof(ret_val)); + + return 0; +} + +int pmic_probe(struct pmic *p) +{ + I2C_SET_BUS(p->bus); + debug("PMIC:%s probed!\n", 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_max8998.c b/drivers/misc/pmic_max8998.c new file mode 100644 index 0000000..cc69fd7 --- /dev/null +++ b/drivers/misc/pmic_max8998.c @@ -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. + * + * 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 <pmic.h> +#include <max8998_pmic.h> + +int pmic_init(void) +{ + struct pmic *p = get_pmic(); + static const char name[] = "MAX8998_PMIC"; + + 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 = I2C_PMIC; + + return 0; +} diff --git a/drivers/misc/pmic_spi.c b/drivers/misc/pmic_spi.c new file mode 100644 index 0000000..ff35377 --- /dev/null +++ b/drivers/misc/pmic_spi.c @@ -0,0 +1,109 @@ +/* + * 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 <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(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(0, NULL, write); + pmic_tx &= ~(1 << 31); + 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; +} |