mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
Merge branch 'master' of git://git.denx.de/u-boot-i2c
This commit is contained in:
Tom Rini
commit
037e9d33db
8 changed files with 162 additions and 8 deletions
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@ -138,6 +138,7 @@ struct watchdog {
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#define I2C_BASE1 (OMAP44XX_L4_PER_BASE + 0x70000)
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#define I2C_BASE2 (OMAP44XX_L4_PER_BASE + 0x72000)
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#define I2C_BASE3 (OMAP44XX_L4_PER_BASE + 0x60000)
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#define I2C_BASE4 (OMAP44XX_L4_PER_BASE + 0x350000)
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/* MUSB base */
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#define MUSB_BASE (OMAP44XX_L4_CORE_BASE + 0xAB000)
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@ -23,7 +23,7 @@
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#ifndef _OMAP4_I2C_H_
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#define _OMAP4_I2C_H_
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#define I2C_BUS_MAX 3
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#define I2C_BUS_MAX 4
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#define I2C_DEFAULT_BASE I2C_BASE1
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struct i2c {
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43
board/samsung/common/Makefile
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43
board/samsung/common/Makefile
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@ -0,0 +1,43 @@
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#
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# Copyright (C) 2012 Samsung Electronics
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# Lukasz Majewski <l.majewski@samsung.com>
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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include $(TOPDIR)/config.mk
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LIB = $(obj)libsamsung.o
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COBJS-$(CONFIG_SOFT_I2C_MULTI_BUS) += multi_i2c.o
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SRCS := $(COBJS-y:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS-y))
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$(LIB): $(obj).depend $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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65
board/samsung/common/multi_i2c.c
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65
board/samsung/common/multi_i2c.c
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@ -0,0 +1,65 @@
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/*
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* Copyright (C) 2012 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <i2c.h>
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/* Handle multiple I2C buses instances */
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int get_multi_scl_pin(void)
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{
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unsigned int bus = I2C_GET_BUS();
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switch (bus) {
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case I2C_0: /* I2C_0 definition - compatibility layer */
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case I2C_5:
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return CONFIG_SOFT_I2C_I2C5_SCL;
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case I2C_9:
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return CONFIG_SOFT_I2C_I2C9_SCL;
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default:
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printf("I2C_%d not supported!\n", bus);
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};
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return 0;
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}
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int get_multi_sda_pin(void)
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{
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unsigned int bus = I2C_GET_BUS();
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switch (bus) {
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case I2C_0: /* I2C_0 definition - compatibility layer */
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case I2C_5:
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return CONFIG_SOFT_I2C_I2C5_SDA;
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case I2C_9:
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return CONFIG_SOFT_I2C_I2C9_SDA;
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default:
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printf("I2C_%d not supported!\n", bus);
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};
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return 0;
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}
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int multi_i2c_init(void)
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{
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return 0;
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}
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@ -75,6 +75,21 @@ int board_init(void)
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return 0;
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}
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void i2c_init_board(void)
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{
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struct exynos4_gpio_part1 *gpio1 =
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(struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
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struct exynos4_gpio_part2 *gpio2 =
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(struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
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/* I2C_5 -> PMIC */
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s5p_gpio_direction_output(&gpio1->b, 7, 1);
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s5p_gpio_direction_output(&gpio1->b, 6, 1);
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/* I2C_9 -> FG */
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s5p_gpio_direction_output(&gpio2->y4, 0, 1);
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s5p_gpio_direction_output(&gpio2->y4, 1, 1);
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}
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int dram_init(void)
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{
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gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
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@ -442,6 +442,14 @@ int i2c_set_bus_num(unsigned int bus)
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return -1;
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}
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#if I2C_BUS_MAX == 4
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if (bus == 3)
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i2c_base = (struct i2c *)I2C_BASE4;
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else
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if (bus == 2)
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i2c_base = (struct i2c *)I2C_BASE3;
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else
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#endif
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#if I2C_BUS_MAX == 3
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if (bus == 2)
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i2c_base = (struct i2c *)I2C_BASE3;
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@ -212,18 +212,28 @@
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR - GENERATED_GBL_DATA_SIZE)
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#define CONFIG_SYS_CACHELINE_SIZE 32
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#include <asm/arch/gpio.h>
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/*
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* I2C Settings
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*/
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#define CONFIG_SOFT_I2C_GPIO_SCL exynos4_gpio_part1_get_nr(b, 7)
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#define CONFIG_SOFT_I2C_GPIO_SDA exynos4_gpio_part1_get_nr(b, 6)
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#define CONFIG_SOFT_I2C
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#define CONFIG_SOFT_I2C_READ_REPEATED_START
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#define CONFIG_SYS_I2C_INIT_BOARD
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#define CONFIG_SYS_I2C_SPEED 50000
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#define CONFIG_I2C_MULTI_BUS
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#define CONFIG_SYS_MAX_I2C_BUS 7
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#define CONFIG_SOFT_I2C_MULTI_BUS
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#define CONFIG_SYS_MAX_I2C_BUS 15
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#include <asm/arch/gpio.h>
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/* I2C PMIC */
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#define CONFIG_SOFT_I2C_I2C5_SCL exynos4_gpio_part1_get_nr(b, 7)
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#define CONFIG_SOFT_I2C_I2C5_SDA exynos4_gpio_part1_get_nr(b, 6)
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/* I2C FG */
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#define CONFIG_SOFT_I2C_I2C9_SCL exynos4_gpio_part2_get_nr(y4, 1)
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#define CONFIG_SOFT_I2C_I2C9_SDA exynos4_gpio_part2_get_nr(y4, 0)
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#define CONFIG_SOFT_I2C_GPIO_SCL get_multi_scl_pin()
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#define CONFIG_SOFT_I2C_GPIO_SDA get_multi_sda_pin()
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#define I2C_INIT multi_i2c_init()
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#define CONFIG_PMIC
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#define CONFIG_PMIC_I2C
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@ -250,4 +250,16 @@ static inline void I2C_SET_BUS(unsigned int bus)
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i2c_set_bus_num(bus);
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}
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/* Multi I2C definitions */
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enum {
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I2C_0, I2C_1, I2C_2, I2C_3, I2C_4, I2C_5, I2C_6, I2C_7,
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I2C_8, I2C_9, I2C_10,
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};
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/* Multi I2C busses handling */
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#ifdef CONFIG_SOFT_I2C_MULTI_BUS
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extern int get_multi_scl_pin(void);
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extern int get_multi_sda_pin(void);
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extern int multi_i2c_init(void);
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#endif
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#endif /* _I2C_H_ */
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