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https://github.com/torvalds/linux
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fe885fa237
The commitd815461c7ain linus tree converts the rtc-rs5c372 driver to a "new style" i2c driver. Like commitc00593f6f8, this patch register the rtc i2c device for the em7210 board. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
215 lines
4.7 KiB
C
215 lines
4.7 KiB
C
/*
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* arch/arm/mach-iop32x/em7210.c
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*
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* Board support code for the Lanner EM7210 platforms.
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*
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* Based on arch/arm/mach-iop32x/iq31244.c file.
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*
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* Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/pm.h>
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#include <linux/serial_core.h>
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#include <linux/serial_8250.h>
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#include <linux/mtd/physmap.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <asm/hardware.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/pci.h>
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#include <asm/mach/time.h>
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#include <asm/mach-types.h>
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#include <asm/arch/time.h>
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static void __init em7210_timer_init(void)
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{
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/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
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/* 33.333 MHz crystal. */
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iop_init_time(200000000);
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}
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static struct sys_timer em7210_timer = {
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.init = em7210_timer_init,
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.offset = iop_gettimeoffset,
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};
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/*
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* EM7210 RTC
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*/
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static struct i2c_board_info __initdata em7210_i2c_devices[] = {
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{
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I2C_BOARD_INFO("rtc-rs5c372", 0x32),
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.type = "rs5c372a",
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},
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};
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/*
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* EM7210 I/O
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*/
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static struct map_desc em7210_io_desc[] __initdata = {
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{ /* on-board devices */
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.virtual = IQ31244_UART,
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.pfn = __phys_to_pfn(IQ31244_UART),
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.length = 0x00100000,
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.type = MT_DEVICE,
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},
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};
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void __init em7210_map_io(void)
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{
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iop3xx_map_io();
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iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
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}
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/*
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* EM7210 PCI
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*/
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#define INTA IRQ_IOP32X_XINT0
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#define INTB IRQ_IOP32X_XINT1
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#define INTC IRQ_IOP32X_XINT2
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#define INTD IRQ_IOP32X_XINT3
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static int __init
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em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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static int pci_irq_table[][4] = {
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/*
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* PCI IDSEL/INTPIN->INTLINE
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* A B C D
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*/
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{INTB, INTB, INTB, INTB}, /* console / uart */
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{INTA, INTA, INTA, INTA}, /* 1st 82541 */
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{INTD, INTD, INTD, INTD}, /* 2nd 82541 */
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{INTC, INTC, INTC, INTC}, /* GD31244 */
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{INTD, INTA, INTA, INTA}, /* mini-PCI */
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{INTD, INTC, INTA, INTA}, /* NEC USB */
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};
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if (pin < 1 || pin > 4)
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return -1;
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return pci_irq_table[slot % 6][pin - 1];
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}
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static struct hw_pci em7210_pci __initdata = {
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.swizzle = pci_std_swizzle,
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.nr_controllers = 1,
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.setup = iop3xx_pci_setup,
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.preinit = iop3xx_pci_preinit,
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.scan = iop3xx_pci_scan_bus,
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.map_irq = em7210_pci_map_irq,
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};
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static int __init em7210_pci_init(void)
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{
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if (machine_is_em7210())
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pci_common_init(&em7210_pci);
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return 0;
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}
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subsys_initcall(em7210_pci_init);
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/*
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* EM7210 Flash
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*/
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static struct physmap_flash_data em7210_flash_data = {
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.width = 2,
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};
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static struct resource em7210_flash_resource = {
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.start = 0xf0000000,
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.end = 0xf1ffffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device em7210_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &em7210_flash_data,
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},
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.num_resources = 1,
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.resource = &em7210_flash_resource,
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};
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/*
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* EM7210 UART
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* The physical address of the serial port is 0xfe800000,
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* so it can be used for physical and virtual address.
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*/
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static struct plat_serial8250_port em7210_serial_port[] = {
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{
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.mapbase = IQ31244_UART,
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.membase = (char *)IQ31244_UART,
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.irq = IRQ_IOP32X_XINT1,
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.flags = UPF_SKIP_TEST,
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.iotype = UPIO_MEM,
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.regshift = 0,
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.uartclk = 1843200,
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},
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{ },
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};
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static struct resource em7210_uart_resource = {
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.start = IQ31244_UART,
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.end = IQ31244_UART + 7,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device em7210_serial_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = em7210_serial_port,
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},
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.num_resources = 1,
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.resource = &em7210_uart_resource,
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};
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void em7210_power_off(void)
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{
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*IOP3XX_GPOE &= 0xfe;
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*IOP3XX_GPOD |= 0x01;
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}
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static void __init em7210_init_machine(void)
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{
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platform_device_register(&em7210_serial_device);
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platform_device_register(&iop3xx_i2c0_device);
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platform_device_register(&iop3xx_i2c1_device);
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platform_device_register(&em7210_flash_device);
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platform_device_register(&iop3xx_dma_0_channel);
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platform_device_register(&iop3xx_dma_1_channel);
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i2c_register_board_info(0, em7210_i2c_devices,
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ARRAY_SIZE(em7210_i2c_devices));
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pm_power_off = em7210_power_off;
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}
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MACHINE_START(EM7210, "Lanner EM7210")
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.phys_io = IQ31244_UART,
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.io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
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.boot_params = 0xa0000100,
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.map_io = em7210_map_io,
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.init_irq = iop32x_init_irq,
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.timer = &em7210_timer,
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.init_machine = em7210_init_machine,
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MACHINE_END
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