diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/fsl_pmic.c | 200 | ||||
| -rw-r--r-- | drivers/misc/pmic_fsl.c | 66 |
2 files changed, 66 insertions, 200 deletions
diff --git a/drivers/misc/fsl_pmic.c b/drivers/misc/fsl_pmic.c deleted file mode 100644 index 87f0aed..0000000 --- a/drivers/misc/fsl_pmic.c +++ /dev/null @@ -1,200 +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 <spi.h> -#include <asm/errno.h> -#include <linux/types.h> -#include <fsl_pmic.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; - - if (!slave) { - slave = pmic_spi_probe(); - - if (!slave) - return -1; - } - - if (reg > 63 || write > 1) { - printf("<reg num> = %d is invalid. Should be less then 63\n", - reg); - return -1; - } - - if (spi_claim_bus(slave)) - return -1; - - pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF); - - if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx, - SPI_XFER_BEGIN | SPI_XFER_END)) { - spi_release_bus(slave); - return -1; - } - - if (write) { - pmic_tx &= ~(1 << 31); - if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx, - SPI_XFER_BEGIN | SPI_XFER_END)) { - spi_release_bus(slave); - return -1; - } - } - - spi_release_bus(slave); - return pmic_rx; -} - -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 *argv[]) -{ - char *cmd; - int nregs; - u32 val; - - /* at least two arguments please */ - if (argc < 2) { - cmd_usage(cmdtp); - return 1; - } - - cmd = argv[1]; - if (strcmp(cmd, "dump") == 0) { - if (argc < 3) { - cmd_usage(cmdtp); - return 1; - } - nregs = simple_strtoul(argv[2], NULL, 16); - pmic_dump(nregs); - return 0; - } - if (strcmp(cmd, "write") == 0) { - if (argc < 4) { - cmd_usage(cmdtp); - return 1; - } - 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_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; +} |