From e542b7f0a28f0a0ccb0921ed97f38e47afbb40d8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20Majewski?= Date: Thu, 6 Oct 2011 02:37:34 +0000 Subject: misc:pmic:core New generic PMIC driver I2C or SPI PMIC devices can be accessed. Separate files: pmic_i2c.c and pmic_spi.c are responsible for handling transmission over I2C or SPI bus. New flags: CONFIG_PMIC - enable PMIC general device. CONFIG_PMIC_I2C/SPI - specify the interface to be used. Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Cc: Stefano Babic --- include/pmic.h | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 include/pmic.h (limited to 'include') diff --git a/include/pmic.h b/include/pmic.h new file mode 100644 index 0000000..52a1526 --- /dev/null +++ b/include/pmic.h @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2011 Samsung Electronics + * Lukasz Majewski + * + * 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 __CORE_PMIC_H_ +#define __CORE_PMIC_H_ + +enum { PMIC_I2C, PMIC_SPI, }; +enum { I2C_PMIC, I2C_NUM, }; +enum { PMIC_READ, PMIC_WRITE, }; + +struct p_i2c { + unsigned char addr; + unsigned char *buf; + unsigned char tx_num; +}; + +struct p_spi { + unsigned int cs; + unsigned int mode; + unsigned int bitlen; + unsigned int clk; + unsigned int flags; + u32 (*prepare_tx)(u32 reg, u32 *val, u32 write); +}; + +struct pmic { + const char *name; + unsigned char bus; + unsigned char interface; + unsigned char number_of_regs; + union hw { + struct p_i2c i2c; + struct p_spi spi; + } hw; +}; + +int pmic_init(void); +int check_reg(u32 reg); +struct pmic *get_pmic(void); +int pmic_probe(struct pmic *p); +int pmic_reg_read(struct pmic *p, u32 reg, u32 *val); +int pmic_reg_write(struct pmic *p, u32 reg, u32 val); +int pmic_set_output(struct pmic *p, u32 reg, int ldo, int on); + +#define pmic_i2c_addr (p->hw.i2c.addr) +#define pmic_i2c_tx_num (p->hw.i2c.tx_num) + +#define pmic_spi_bitlen (p->hw.spi.bitlen) +#define pmic_spi_flags (p->hw.spi.flags) + +#endif /* __CORE_PMIC_H_ */ -- cgit v1.1