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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/…
…git/gerg/m68knommu Pull m68knommu updates from Greg Ungerer: "There are two sets of changes in this pull. The largest is the addition of the ColdFire platform side i2c support (the IO addressing, setup and clock definitions). The i2c hardware module itself is driven by the kernels existing iMX i2c driver. The other change is the addition of support for the Amcore board" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: AMCORE board, add iMX i2c support m68k: add Sysam AMCORE open board support m68knommu: platform support for i2c devices on ColdFire SoC
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| /* | ||
| * amcore.c -- Support for Sysam AMCORE open board | ||
| * | ||
| * (C) Copyright 2016, Angelo Dureghello <[email protected]> | ||
| * | ||
| * This file is subject to the terms and conditions of the GNU General Public | ||
| * License. See the file COPYING in the main directory of this archive | ||
| * for more details. | ||
| */ | ||
|
|
||
| #include <linux/device.h> | ||
| #include <linux/platform_device.h> | ||
| #include <linux/dm9000.h> | ||
| #include <linux/irq.h> | ||
| #include <linux/interrupt.h> | ||
| #include <linux/mtd/mtd.h> | ||
| #include <linux/mtd/map.h> | ||
| #include <linux/mtd/partitions.h> | ||
| #include <linux/mtd/physmap.h> | ||
| #include <linux/i2c.h> | ||
|
|
||
| #include <asm/coldfire.h> | ||
| #include <asm/mcfsim.h> | ||
| #include <asm/io.h> | ||
|
|
||
| #if IS_ENABLED(CONFIG_DM9000) | ||
|
|
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| #define DM9000_IRQ 25 | ||
| #define DM9000_ADDR 0x30000000 | ||
|
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||
| /* | ||
| * DEVICES and related device RESOURCES | ||
| */ | ||
| static struct resource dm9000_resources[] = { | ||
| /* physical address of the address register (CMD [A2] to 0)*/ | ||
| [0] = { | ||
| .start = DM9000_ADDR, | ||
| .end = DM9000_ADDR, | ||
| .flags = IORESOURCE_MEM, | ||
| }, | ||
| /* | ||
| * physical address of the data register (CMD [A2] to 1), | ||
| * driver wants a range >=4 to assume a 32bit data bus | ||
| */ | ||
| [1] = { | ||
| .start = DM9000_ADDR + 4, | ||
| .end = DM9000_ADDR + 7, | ||
| .flags = IORESOURCE_MEM, | ||
| }, | ||
| /* IRQ line the device's interrupt pin is connected to */ | ||
| [2] = { | ||
| .start = DM9000_IRQ, | ||
| .end = DM9000_IRQ, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| }; | ||
|
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| static struct dm9000_plat_data dm9000_platdata = { | ||
| .flags = DM9000_PLATF_32BITONLY, | ||
| }; | ||
|
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| static struct platform_device dm9000_device = { | ||
| .name = "dm9000", | ||
| .id = 0, | ||
| .num_resources = ARRAY_SIZE(dm9000_resources), | ||
| .resource = dm9000_resources, | ||
| .dev = { | ||
| .platform_data = &dm9000_platdata, | ||
| } | ||
| }; | ||
| #endif | ||
|
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||
| static void __init dm9000_pre_init(void) | ||
| { | ||
| /* Set the dm9000 interrupt to be auto-vectored */ | ||
| mcf_autovector(DM9000_IRQ); | ||
| } | ||
|
|
||
| /* | ||
| * Partitioning of parallel NOR flash (39VF3201B) | ||
| */ | ||
| static struct mtd_partition amcore_partitions[] = { | ||
| { | ||
| .name = "U-Boot (128K)", | ||
| .size = 0x20000, | ||
| .offset = 0x0 | ||
| }, | ||
| { | ||
| .name = "Kernel+ROMfs (2994K)", | ||
| .size = 0x2E0000, | ||
| .offset = MTDPART_OFS_APPEND | ||
| }, | ||
| { | ||
| .name = "Flash Free Space (1024K)", | ||
| .size = MTDPART_SIZ_FULL, | ||
| .offset = MTDPART_OFS_APPEND | ||
| } | ||
| }; | ||
|
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| static struct physmap_flash_data flash_data = { | ||
| .parts = amcore_partitions, | ||
| .nr_parts = ARRAY_SIZE(amcore_partitions), | ||
| .width = 2, | ||
| }; | ||
|
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| static struct resource flash_resource = { | ||
| .start = 0xffc00000, | ||
| .end = 0xffffffff, | ||
| .flags = IORESOURCE_MEM, | ||
| }; | ||
|
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| static struct platform_device flash_device = { | ||
| .name = "physmap-flash", | ||
| .id = -1, | ||
| .resource = &flash_resource, | ||
| .num_resources = 1, | ||
| .dev = { | ||
| .platform_data = &flash_data, | ||
| }, | ||
| }; | ||
|
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| static struct platform_device rtc_device = { | ||
| .name = "rtc-ds1307", | ||
| .id = -1, | ||
| }; | ||
|
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| static struct i2c_board_info amcore_i2c_info[] __initdata = { | ||
| { | ||
| I2C_BOARD_INFO("ds1338", 0x68), | ||
| }, | ||
| }; | ||
|
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| static struct platform_device *amcore_devices[] __initdata = { | ||
| #if IS_ENABLED(CONFIG_DM9000) | ||
| &dm9000_device, | ||
| #endif | ||
| &flash_device, | ||
| &rtc_device, | ||
| }; | ||
|
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| static int __init init_amcore(void) | ||
| { | ||
| #if IS_ENABLED(CONFIG_DM9000) | ||
| dm9000_pre_init(); | ||
| #endif | ||
|
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| /* Add i2c RTC Dallas chip supprt */ | ||
| i2c_register_board_info(0, amcore_i2c_info, | ||
| ARRAY_SIZE(amcore_i2c_info)); | ||
|
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| platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices)); | ||
|
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| return 0; | ||
| } | ||
|
|
||
| arch_initcall(init_amcore); |
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