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cc155c6f2c
For some platforms, it is inappropriate to register all PXA UARTs. In some cases, the UARTs may not be used, and in others we may want to avoid registering the UARTs to allow other drivers (eg, FICP) to make use of the UART. In addition, a while back there was a request to be able to pass platform data to the UART driver. This patch enables all of this by providing functions platforms can call to register each individual UART. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
193 lines
4.6 KiB
C
193 lines
4.6 KiB
C
/* linux/arch/arm/mach-pxa/xcep.c
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*
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* Support for the Iskratel Electronics XCEP platform as used in
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* the Libera instruments from Instrumentation Technologies.
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*
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* Author: Ales Bardorfer <ales@i-tech.si>
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* Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
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* Contributions by: Matej Kenda <matej.kenda@i-tech.si>
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* Created: June 2006
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* Copyright: (C) 2006-2009 Instrumentation Technologies
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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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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/smc91x.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/physmap.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/map.h>
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#include <plat/i2c.h>
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#include <mach/hardware.h>
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#include <mach/pxa2xx-regs.h>
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#include <mach/mfp-pxa25x.h>
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#include "generic.h"
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#define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300)
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#define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff)
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#define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000)
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#define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff)
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#define XCEP_ETH_IRQ IRQ_GPIO0
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/* XCEP CPLD base */
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#define XCEP_CPLD_BASE 0xf0000000
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/* Flash partitions. */
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static struct mtd_partition xcep_partitions[] = {
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{
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.name = "Bootloader",
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.size = 0x00040000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE
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}, {
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.name = "Bootloader ENV",
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.size = 0x00040000,
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.offset = 0x00040000,
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.mask_flags = MTD_WRITEABLE
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}, {
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.name = "Kernel",
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.size = 0x00100000,
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.offset = 0x00080000,
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}, {
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.name = "Rescue fs",
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.size = 0x00280000,
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.offset = 0x00180000,
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}, {
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.name = "Filesystem",
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.size = MTDPART_SIZ_FULL,
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.offset = 0x00400000
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}
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};
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static struct physmap_flash_data xcep_flash_data[] = {
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{
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.width = 4, /* bankwidth in bytes */
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.parts = xcep_partitions,
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.nr_parts = ARRAY_SIZE(xcep_partitions)
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}
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};
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static struct resource flash_resource = {
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.start = PXA_CS0_PHYS,
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.end = PXA_CS0_PHYS + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device 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 = xcep_flash_data,
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},
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.resource = &flash_resource,
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.num_resources = 1,
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};
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/* SMC LAN91C111 network controller. */
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static struct resource smc91x_resources[] = {
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[0] = {
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.name = "smc91x-regs",
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.start = XCEP_ETH_PHYS,
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.end = XCEP_ETH_PHYS_END,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = XCEP_ETH_IRQ,
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.end = XCEP_ETH_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.name = "smc91x-attrib",
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.start = XCEP_ETH_ATTR,
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.end = XCEP_ETH_ATTR_END,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct smc91x_platdata xcep_smc91x_info = {
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.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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.dev = {
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.platform_data = &xcep_smc91x_info,
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},
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};
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static struct platform_device *devices[] __initdata = {
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&flash_device,
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&smc91x_device,
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};
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/* We have to state that there are HWMON devices on the I2C bus on XCEP.
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* Drivers for HWMON verify capabilities of the adapter when loading and
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* refuse to attach if the adapter doesn't support HWMON class of devices.
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* See also Documentation/i2c/porting-clients. */
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static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
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.class = I2C_CLASS_HWMON
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};
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static mfp_cfg_t xcep_pin_config[] __initdata = {
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GPIO79_nCS_3, /* SMC 91C111 chip select. */
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GPIO80_nCS_4, /* CPLD chip select. */
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/* SSP communication to MSP430 */
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GPIO23_SSP1_SCLK,
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GPIO24_SSP1_SFRM,
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GPIO25_SSP1_TXD,
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GPIO26_SSP1_RXD,
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GPIO27_SSP1_EXTCLK
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};
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static void __init xcep_init(void)
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{
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pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
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pxa_set_ffuart_info(NULL);
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pxa_set_btuart_info(NULL);
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pxa_set_stuart_info(NULL);
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pxa_set_hwuart_info(NULL);
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/* See Intel XScale Developer's Guide for details */
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/* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
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MSC1 = (MSC1 & 0xffff) | 0xD5540000;
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/* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
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MSC2 = (MSC2 & 0xffff) | 0x72A00000;
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platform_add_devices(ARRAY_AND_SIZE(devices));
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pxa_set_i2c_info(&xcep_i2c_platform_data);
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}
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MACHINE_START(XCEP, "Iskratel XCEP")
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.boot_params = 0xa0000100,
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.init_machine = xcep_init,
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.map_io = pxa_map_io,
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.init_irq = pxa25x_init_irq,
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.timer = &pxa_timer,
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MACHINE_END
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