diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap1/common.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/i2c.c | 59 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/board-rm680.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/common.h | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/i2c.c | 50 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/i2c.h (renamed from arch/arm/plat-omap/include/plat/i2c.h) | 25 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_2420_data.c | 5 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_2430_data.c | 5 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/twl-common.c | 1 | ||||
| -rw-r--r-- | arch/arm/plat-omap/i2c.c | 133 | ||||
| -rw-r--r-- | arch/arm/plat-omap/i2c.h | 47 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/common.h | 1 |
15 files changed, 182 insertions, 163 deletions
diff --git a/arch/arm/mach-omap1/common.h b/arch/arm/mach-omap1/common.h index a65f50aeda6b..c96c1320b001 100644 --- a/arch/arm/mach-omap1/common.h +++ b/arch/arm/mach-omap1/common.h @@ -28,6 +28,9 @@ #include <plat/common.h> #include <linux/mtd/mtd.h> +#include <linux/i2c-omap.h> + +#include "../plat-omap/i2c.h" #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850) void omap7xx_map_io(void); diff --git a/arch/arm/mach-omap1/i2c.c b/arch/arm/mach-omap1/i2c.c index a0551a6d7451..a6f465a44642 100644 --- a/arch/arm/mach-omap1/i2c.c +++ b/arch/arm/mach-omap1/i2c.c @@ -19,11 +19,25 @@ * */ -#include <plat/i2c.h> +#include <linux/i2c-omap.h> #include <mach/mux.h> #include <plat/cpu.h> -void __init omap1_i2c_mux_pins(int bus_id) +#include "../plat-omap/i2c.h" + +#define OMAP_I2C_SIZE 0x3f +#define OMAP1_I2C_BASE 0xfffb3800 +#define OMAP1_INT_I2C (32 + 4) + +static const char name[] = "omap_i2c"; + +static struct resource i2c_resources[2] = { +}; + +static struct platform_device omap_i2c_devices[1] = { +}; + +static void __init omap1_i2c_mux_pins(int bus_id) { if (cpu_is_omap7xx()) { omap_cfg_reg(I2C_7XX_SDA); @@ -33,3 +47,44 @@ void __init omap1_i2c_mux_pins(int bus_id) omap_cfg_reg(I2C_SCL); } } + +int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *pdata, + int bus_id) +{ + struct platform_device *pdev; + struct resource *res; + + omap1_i2c_mux_pins(bus_id); + + pdev = &omap_i2c_devices[bus_id - 1]; + pdev->id = bus_id; + pdev->name = name; + pdev->num_resources = ARRAY_SIZE(i2c_resources); + res = i2c_resources; + res[0].start = OMAP1_I2C_BASE; + res[0].end = res[0].start + OMAP_I2C_SIZE; + res[0].flags = IORESOURCE_MEM; + res[1].start = OMAP1_INT_I2C; + res[1].flags = IORESOURCE_IRQ; + pdev->resource = res; + + /* all OMAP1 have IP version 1 register set */ + pdata->rev = OMAP_I2C_IP_VERSION_1; + + /* all OMAP1 I2C are implemented like this */ + pdata->flags = OMAP_I2C_FLAG_NO_FIFO | + OMAP_I2C_FLAG_SIMPLE_CLOCK | + OMAP_I2C_FLAG_16BIT_DATA_REG | + OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK; + + /* how the cpu bus is wired up differs for 7xx only */ + + if (cpu_is_omap7xx()) + pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_1; + else + pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_2; + + pdev->dev.platform_data = pdata; + + return platform_device_register(pdev); +} diff --git a/arch/arm/mach-omap2/board-rm680.c b/arch/arm/mach-omap2/board-rm680.c index 208a7a239db5..d42ecfe56096 100644 --- a/arch/arm/mach-omap2/board-rm680.c +++ b/arch/arm/mach-omap2/board-rm680.c @@ -22,7 +22,6 @@ #include <asm/mach/arch.h> #include <asm/mach-types.h> -#include <plat/i2c.h> #include <plat/usb.h> #include "gpmc.h" #include "common.h" diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 7045e4d61ac3..a68b421b3f86 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -28,7 +28,9 @@ #include <linux/irq.h> #include <linux/delay.h> +#include <linux/i2c.h> #include <linux/i2c/twl.h> +#include <linux/i2c-omap.h> #include <asm/proc-fns.h> @@ -36,6 +38,8 @@ #include <plat/serial.h> #include <plat/common.h> +#include "i2c.h" + #define OMAP_INTC_START NR_IRQS #ifdef CONFIG_SOC_OMAP2420 diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c index fc57e67b321f..9f12f63ec54d 100644 --- a/arch/arm/mach-omap2/i2c.c +++ b/arch/arm/mach-omap2/i2c.c @@ -19,11 +19,12 @@ * */ -#include <plat/i2c.h> #include "common.h" #include <plat/omap_hwmod.h> +#include <plat/omap_device.h> #include "mux.h" +#include "i2c.h" /* In register I2C_CON, Bit 15 is the I2C enable bit */ #define I2C_EN BIT(15) @@ -33,7 +34,9 @@ /* Maximum microseconds to wait for OMAP module to softreset */ #define MAX_MODULE_SOFTRESET_WAIT 10000 -void __init omap2_i2c_mux_pins(int bus_id) +#define MAX_OMAP_I2C_HWMOD_NAME_LEN 16 + +static void __init omap2_i2c_mux_pins(int bus_id) { char mux_name[sizeof("i2c2_scl.i2c2_scl")]; @@ -104,3 +107,46 @@ int omap_i2c_reset(struct omap_hwmod *oh) return 0; } + +static const char name[] = "omap_i2c"; + +int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *i2c_pdata, + int bus_id) +{ + int l; + struct omap_hwmod *oh; + struct platform_device *pdev; + char oh_name[MAX_OMAP_I2C_HWMOD_NAME_LEN]; + struct omap_i2c_bus_platform_data *pdata; + struct omap_i2c_dev_attr *dev_attr; + + omap2_i2c_mux_pins(bus_id); + + l = snprintf(oh_name, MAX_OMAP_I2C_HWMOD_NAME_LEN, "i2c%d", bus_id); + WARN(l >= MAX_OMAP_I2C_HWMOD_NAME_LEN, + "String buffer overflow in I2C%d device setup\n", bus_id); + oh = omap_hwmod_lookup(oh_name); + if (!oh) { + pr_err("Could not look up %s\n", oh_name); + return -EEXIST; + } + + pdata = i2c_pdata; + /* + * pass the hwmod class's CPU-specific knowledge of I2C IP revision in + * use, and functionality implementation flags, up to the OMAP I2C + * driver via platform data + */ + pdata->rev = oh->class->rev; + + dev_attr = (struct omap_i2c_dev_attr *)oh->dev_attr; + pdata->flags = dev_attr->flags; + + pdev = omap_device_build(name, bus_id, oh, pdata, + sizeof(struct omap_i2c_bus_platform_data), + NULL, 0, 0); + WARN(IS_ERR(pdev), "Could not build omap_device for %s\n", name); + + return PTR_RET(pdev); +} + diff --git a/arch/arm/plat-omap/include/plat/i2c.h b/arch/arm/mach-omap2/i2c.h index 7c22b9e10dc3..81dbb992a6bc 100644 --- a/arch/arm/plat-omap/include/plat/i2c.h +++ b/arch/arm/mach-omap2/i2c.h @@ -18,24 +18,11 @@ * 02110-1301 USA * */ -#ifndef __ASM__ARCH_OMAP_I2C_H -#define __ASM__ARCH_OMAP_I2C_H -#include <linux/i2c.h> -#include <linux/i2c-omap.h> +#include "../plat-omap/i2c.h" -#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) -extern int omap_register_i2c_bus(int bus_id, u32 clkrate, - struct i2c_board_info const *info, - unsigned len); -#else -static inline int omap_register_i2c_bus(int bus_id, u32 clkrate, - struct i2c_board_info const *info, - unsigned len) -{ - return 0; -} -#endif +#ifndef __MACH_OMAP2_I2C_H +#define __MACH_OMAP2_I2C_H /** * i2c_dev_attr - OMAP I2C controller device attributes for omap_hwmod @@ -50,10 +37,6 @@ struct omap_i2c_dev_attr { u32 flags; }; -void __init omap1_i2c_mux_pins(int bus_id); -void __init omap2_i2c_mux_pins(int bus_id); - -struct omap_hwmod; int omap_i2c_reset(struct omap_hwmod *oh); -#endif /* __ASM__ARCH_OMAP_I2C_H */ +#endif /* __MACH_OMAP2_I2C_H */ diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c index 80bbbee57649..95a0053b6ae1 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c @@ -12,12 +12,12 @@ * XXX handle crossbar/shared link difference for L3? * XXX these should be marked initdata for multi-OMAP kernels */ + +#include <linux/i2c-omap.h> #include <linux/platform_data/spi-omap2-mcspi.h> #include <plat/omap_hwmod.h> #include <plat-omap/dma-omap.h> -#include <plat/serial.h> -#include <plat/i2c.h> #include <plat/dmtimer.h> #include "l3_2xxx.h" #include "l4_2xxx.h" @@ -26,6 +26,7 @@ #include "cm-regbits-24xx.h" #include "prm-regbits-24xx.h" +#include "i2c.h" #include "mmc.h" #include "wd_timer.h" diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c index dff04f948a2f..a6c24aea28b6 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c @@ -12,13 +12,13 @@ * XXX handle crossbar/shared link difference for L3? * XXX these should be marked initdata for multi-OMAP kernels */ + +#include <linux/i2c-omap.h> #include <linux/platform_data/asoc-ti-mcbsp.h> #include <linux/platform_data/spi-omap2-mcspi.h> #include <plat/omap_hwmod.h> #include <plat-omap/dma-omap.h> -#include <plat/serial.h> -#include <plat/i2c.h> #include <plat/dmtimer.h> #include "mmc.h" #include "l3_2xxx.h" @@ -27,6 +27,7 @@ #include "omap_hwmod_common_data.h" #include "prm-regbits-24xx.h" #include "cm-regbits-24xx.h" +#include "i2c.h" #include "wd_timer.h" /* diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c index 44a661882a7e..cb7c393c08de 100644 --- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c @@ -14,11 +14,12 @@ * GNU General Public License for more details. */ +#include <linux/i2c-omap.h> + #include <plat/omap_hwmod.h> #include <plat/cpu.h> #include <linux/platform_data/gpio-omap.h> #include <linux/platform_data/spi-omap2-mcspi.h> -#include <plat/i2c.h> #include "omap_hwmod_common_data.h" @@ -26,6 +27,7 @@ #include "cm33xx.h" #include "prm33xx.h" #include "prm-regbits-33xx.h" +#include "i2c.h" #include "mmc.h" /* diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 2aaf3ce80626..14451217dac2 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -14,6 +14,8 @@ * * XXX these should be marked initdata for multi-OMAP kernels */ + +#include <linux/i2c-omap.h> #include <linux/power/smartreflex.h> #include <linux/platform_data/gpio-omap.h> @@ -22,7 +24,6 @@ #include <plat/serial.h> #include "l3_3xxx.h" #include "l4_3xxx.h" -#include <plat/i2c.h> #include <linux/platform_data/asoc-ti-mcbsp.h> #include <linux/platform_data/spi-omap2-mcspi.h> #include <plat/dmtimer.h> @@ -36,6 +37,7 @@ #include "cm-regbits-34xx.h" #include "dma.h" +#include "i2c.h" #include "mmc.h" #include "wd_timer.h" diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index f47a57fa1f3a..2c736cd2bea1 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -21,9 +21,9 @@ #include <linux/io.h> #include <linux/platform_data/gpio-omap.h> #include <linux/power/smartreflex.h> +#include <linux/i2c-omap.h> #include <plat/omap_hwmod.h> -#include <plat/i2c.h> #include <plat-omap/dma-omap.h> #include <linux/platform_data/spi-omap2-mcspi.h> #include <linux/platform_data/asoc-ti-mcbsp.h> @@ -36,6 +36,7 @@ #include "cm2_44xx.h" #include "prm44xx.h" #include "prm-regbits-44xx.h" +#include "i2c.h" #include "mmc.h" #include "wd_timer.h" diff --git a/arch/arm/mach-omap2/twl-common.c b/arch/arm/mach-omap2/twl-common.c index 635e109f5ad3..1a0739d397f3 100644 --- a/arch/arm/mach-omap2/twl-common.c +++ b/arch/arm/mach-omap2/twl-common.c @@ -26,7 +26,6 @@ #include <linux/regulator/machine.h> #include <linux/regulator/fixed.h> -#include <plat/i2c.h> #include <plat/usb.h> #include "soc.h" diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c index a5683a84c6ee..37597a6bbed2 100644 --- a/arch/arm/plat-omap/i2c.c +++ b/arch/arm/plat-omap/i2c.c @@ -26,52 +26,18 @@ #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/i2c.h> +#include <linux/i2c-omap.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/clk.h> #include <mach/irqs.h> -#include <plat/i2c.h> -#include <plat/omap_device.h> +#include <plat/cpu.h> -#define OMAP_I2C_SIZE 0x3f -#define OMAP1_I2C_BASE 0xfffb3800 -#define OMAP1_INT_I2C (32 + 4) +#include "i2c.h" -static const char name[] = "omap_i2c"; - -#define I2C_RESOURCE_BUILDER(base, irq) \ - { \ - .start = (base), \ - .end = (base) + OMAP_I2C_SIZE, \ - .flags = IORESOURCE_MEM, \ - }, \ - { \ - .start = (irq), \ - .flags = IORESOURCE_IRQ, \ - }, - -static struct resource i2c_resources[][2] = { - { I2C_RESOURCE_BUILDER(0, 0) }, -}; - -#define I2C_DEV_BUILDER(bus_id, res, data) \ - { \ - .id = (bus_id), \ - .name = name, \ - .num_resources = ARRAY_SIZE(res), \ - .resource = (res), \ - .dev = { \ - .platform_data = (data), \ - }, \ - } - -#define MAX_OMAP_I2C_HWMOD_NAME_LEN 16 #define OMAP_I2C_MAX_CONTROLLERS 4 static struct omap_i2c_bus_platform_data i2c_pdata[OMAP_I2C_MAX_CONTROLLERS]; -static struct platform_device omap_i2c_devices[] = { - I2C_DEV_BUILDER(1, i2c_resources[0], &i2c_pdata[0]), -}; #define OMAP_I2C_CMDLINE_SETUP (BIT(31)) @@ -91,95 +57,6 @@ static int __init omap_i2c_nr_ports(void) return ports; } -static inline int omap1_i2c_add_bus(int bus_id) -{ - struct platform_device *pdev; - struct omap_i2c_bus_platform_data *pdata; - struct resource *res; - - omap1_i2c_mux_pins(bus_id); - - pdev = &omap_i2c_devices[bus_id - 1]; - res = pdev->resource; - res[0].start = OMAP1_I2C_BASE; - res[0].end = res[0].start + OMAP_I2C_SIZE; - res[1].start = OMAP1_INT_I2C; - pdata = &i2c_pdata[bus_id - 1]; - - /* all OMAP1 have IP version 1 register set */ - pdata->rev = OMAP_I2C_IP_VERSION_1; - - /* all OMAP1 I2C are implemented like this */ - pdata->flags = OMAP_I2C_FLAG_NO_FIFO | - OMAP_I2C_FLAG_SIMPLE_CLOCK | - OMAP_I2C_FLAG_16BIT_DATA_REG | - OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK; - - /* how the cpu bus is wired up differs for 7xx only */ - - if (cpu_is_omap7xx()) - pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_1; - else - pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_2; - - return platform_device_register(pdev); -} - - -#ifdef CONFIG_ARCH_OMAP2PLUS -static inline int omap2_i2c_add_bus(int bus_id) -{ - int l; - struct omap_hwmod *oh; - struct platform_device *pdev; - char oh_name[MAX_OMAP_I2C_HWMOD_NAME_LEN]; - struct omap_i2c_bus_platform_data *pdata; - struct omap_i2c_dev_attr *dev_attr; - - omap2_i2c_mux_pins(bus_id); - - l = snprintf(oh_name, MAX_OMAP_I2C_HWMOD_NAME_LEN, "i2c%d", bus_id); - WARN(l >= MAX_OMAP_I2C_HWMOD_NAME_LEN, - "String buffer overflow in I2C%d device setup\n", bus_id); - oh = omap_hwmod_lookup(oh_name); - if (!oh) { - pr_err("Could not look up %s\n", oh_name); - return -EEXIST; - } - - pdata = &i2c_pdata[bus_id - 1]; - /* - * pass the hwmod class's CPU-specific knowledge of I2C IP revision in - * use, and functionality implementation flags, up to the OMAP I2C - * driver via platform data - */ - pdata->rev = oh->class->rev; - - dev_attr = (struct omap_i2c_dev_attr *)oh->dev_attr; - pdata->flags = dev_attr->flags; - - pdev = omap_device_build(name, bus_id, oh, pdata, - sizeof(struct omap_i2c_bus_platform_data), - NULL, 0, 0); - WARN(IS_ERR(pdev), "Could not build omap_device for %s\n", name); - - return PTR_RET(pdev); -} -#else -static inline int omap2_i2c_add_bus(int bus_id) -{ - return 0; -} -#endif - -static int __init omap_i2c_add_bus(int bus_id) -{ - if (cpu_class_is_omap1()) - return omap1_i2c_add_bus(bus_id); - else - return omap2_i2c_add_bus(bus_id); -} - /** * omap_i2c_bus_setup - Process command line options for the I2C bus speed * @str: String of options @@ -218,7 +95,7 @@ static int __init omap_register_i2c_bus_cmdline(void) for (i = 0; i < ARRAY_SIZE(i2c_pdata); i++) if (i2c_pdata[i].clkrate & OMAP_I2C_CMDLINE_SETUP) { i2c_pdata[i].clkrate &= ~OMAP_I2C_CMDLINE_SETUP; - err = omap_i2c_add_bus(i + 1); + err = omap_i2c_add_bus(&i2c_pdata[i], i + 1); if (err) goto out; } @@ -256,5 +133,5 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate, i2c_pdata[bus_id - 1].clkrate &= ~OMAP_I2C_CMDLINE_SETUP; - return omap_i2c_add_bus(bus_id); + return omap_i2c_add_bus(&i2c_pdata[bus_id - 1], bus_id); } diff --git a/arch/arm/plat-omap/i2c.h b/arch/arm/plat-omap/i2c.h new file mode 100644 index 000000000000..7a9028cb5a75 --- /dev/null +++ b/arch/arm/plat-omap/i2c.h @@ -0,0 +1,47 @@ +/* + * Helper module for board specific I2C bus registration + * + * Copyright (C) 2009 Nokia Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef __PLAT_OMAP_I2C_H +#define __PLAT_OMAP_I2C_H + +struct i2c_board_info; +struct omap_i2c_bus_platform_data; + +int omap_i2c_add_bus(struct omap_i2c_bus_platform_data *i2c_pdata, + int bus_id); + +#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) +extern int omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len); +#else +static inline int omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len) +{ + return 0; +} +#endif + +struct omap_hwmod; +int omap_i2c_reset(struct omap_hwmod *oh); + +#endif /* __PLAT_OMAP_I2C_H */ diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h index d1cb6f527b7e..55c0f8bfc85b 100644 --- a/arch/arm/plat-omap/include/plat/common.h +++ b/arch/arm/plat-omap/include/plat/common.h @@ -27,7 +27,6 @@ #ifndef __ARCH_ARM_MACH_OMAP_COMMON_H #define __ARCH_ARM_MACH_OMAP_COMMON_H -#include <plat/i2c.h> #include <plat/omap_hwmod.h> extern int __init omap_init_clocksource_32k(void __iomem *vbase); |
