diff options
Diffstat (limited to 'drivers/power/power_fsl.c')
| -rw-r--r-- | drivers/power/power_fsl.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/power/power_fsl.c b/drivers/power/power_fsl.c new file mode 100644 index 0000000000..a663831589 --- /dev/null +++ b/drivers/power/power_fsl.c @@ -0,0 +1,75 @@ +/* + * 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_FSL_MC13892) +#define FSL_PMIC_I2C_LENGTH 3 +#elif defined(CONFIG_PMIC_FSL_MC34704) +#define FSL_PMIC_I2C_LENGTH 1 +#endif + +#if defined(CONFIG_POWER_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_POWER_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_POWER_I2C) + p->interface = PMIC_I2C; + p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR; + p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH; + p->bus = bus; +#else +#error "You must select CONFIG_POWER_SPI or CONFIG_PMIC_I2C" +#endif + + return 0; +} |
