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linux-stable/arch/arm/mach-ixp4xx/ixdp425-setup.c
Linus Walleij f458ac4797 ARM/net: ixp4xx: Pass ethernet physical base as resource 
In order to probe this ethernet interface from the device tree
all physical MMIO regions must be passed as resources. Begin
this rewrite by first passing the port base address as a
resource for all platforms using this driver, remap it in
the driver and avoid using any reference of the statically
mapped virtual address in the driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-12 12:59:53 -08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* arch/arm/mach-ixp4xx/ixdp425-setup.c
*
* IXDP425/IXCDP1100 board-setup
*
* Copyright (C) 2003-2005 MontaVista Software, Inc.
*
* Author: Deepak Saxena <dsaxena@plexity.net>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_8250.h>
#include <linux/gpio/machine.h>
#include <linux/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/platnand.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include "irqs.h"
#define IXDP425_SDA_PIN 7
#define IXDP425_SCL_PIN 6
/* NAND Flash pins */
#define IXDP425_NAND_NCE_PIN 12
#define IXDP425_NAND_CMD_BYTE 0x01
#define IXDP425_NAND_ADDR_BYTE 0x02
static struct flash_platform_data ixdp425_flash_data = {
.map_name = "cfi_probe",
.width = 2,
};
static struct resource ixdp425_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device ixdp425_flash = {
.name = "IXP4XX-Flash",
.id = 0,
.dev = {
.platform_data = &ixdp425_flash_data,
},
.num_resources = 1,
.resource = &ixdp425_flash_resource,
};
#if defined(CONFIG_MTD_NAND_PLATFORM) || \
defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
static struct mtd_partition ixdp425_partitions[] = {
{
.name = "ixp400 NAND FS 0",
.offset = 0,
.size = SZ_8M
}, {
.name = "ixp400 NAND FS 1",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL
},
};
static void
ixdp425_flash_nand_cmd_ctrl(struct nand_chip *this, int cmd, unsigned int ctrl)
{
int offset = (int)nand_get_controller_data(this);
if (ctrl & NAND_CTRL_CHANGE) {
if (ctrl & NAND_NCE) {
gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
udelay(5);
} else
gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
nand_set_controller_data(this, (void *)offset);
}
if (cmd != NAND_CMD_NONE)
writeb(cmd, this->legacy.IO_ADDR_W + offset);
}
static struct platform_nand_data ixdp425_flash_nand_data = {
.chip = {
.nr_chips = 1,
.chip_delay = 30,
.partitions = ixdp425_partitions,
.nr_partitions = ARRAY_SIZE(ixdp425_partitions),
},
.ctrl = {
.cmd_ctrl = ixdp425_flash_nand_cmd_ctrl
}
};
static struct resource ixdp425_flash_nand_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device ixdp425_flash_nand = {
.name = "gen_nand",
.id = -1,
.dev = {
.platform_data = &ixdp425_flash_nand_data,
},
.num_resources = 1,
.resource = &ixdp425_flash_nand_resource,
};
#endif /* CONFIG_MTD_NAND_PLATFORM */
static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = {
.dev_id = "i2c-gpio.0",
.table = {
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN,
NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN,
NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
},
};
static struct platform_device ixdp425_i2c_gpio = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = NULL,
},
};
static struct resource ixdp425_uart_resources[] = {
{
.start = IXP4XX_UART1_BASE_PHYS,
.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM
},
{
.start = IXP4XX_UART2_BASE_PHYS,
.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM
}
};
static struct plat_serial8250_port ixdp425_uart_data[] = {
{
.mapbase = IXP4XX_UART1_BASE_PHYS,
.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART1,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{
.mapbase = IXP4XX_UART2_BASE_PHYS,
.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART2,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{ },
};
static struct platform_device ixdp425_uart = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev.platform_data = ixdp425_uart_data,
.num_resources = 2,
.resource = ixdp425_uart_resources
};
/* Built-in 10/100 Ethernet MAC interfaces */
static struct resource ixp425_npeb_resources[] = {
{
.start = IXP4XX_EthB_BASE_PHYS,
.end = IXP4XX_EthB_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
},
};
static struct resource ixp425_npec_resources[] = {
{
.start = IXP4XX_EthC_BASE_PHYS,
.end = IXP4XX_EthC_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
},
};
static struct eth_plat_info ixdp425_plat_eth[] = {
{
.phy = 0,
.rxq = 3,
.txreadyq = 20,
}, {
.phy = 1,
.rxq = 4,
.txreadyq = 21,
}
};
static struct platform_device ixdp425_eth[] = {
{
.name = "ixp4xx_eth",
.id = IXP4XX_ETH_NPEB,
.dev.platform_data = ixdp425_plat_eth,
.num_resources = ARRAY_SIZE(ixp425_npeb_resources),
.resource = ixp425_npeb_resources,
}, {
.name = "ixp4xx_eth",
.id = IXP4XX_ETH_NPEC,
.dev.platform_data = ixdp425_plat_eth + 1,
.num_resources = ARRAY_SIZE(ixp425_npec_resources),
.resource = ixp425_npec_resources,
}
};
static struct platform_device *ixdp425_devices[] __initdata = {
&ixdp425_i2c_gpio,
&ixdp425_flash,
#if defined(CONFIG_MTD_NAND_PLATFORM) || \
defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
&ixdp425_flash_nand,
#endif
&ixdp425_uart,
&ixdp425_eth[0],
&ixdp425_eth[1],
};
static void __init ixdp425_init(void)
{
ixp4xx_sys_init();
ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
ixdp425_flash_resource.end =
IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
#if defined(CONFIG_MTD_NAND_PLATFORM) || \
defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
ixdp425_flash_nand_resource.end = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
/* Configure expansion bus for NAND Flash */
*IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
IXP4XX_EXP_BUS_STROBE_T(1) | /* extend by 1 clock */
IXP4XX_EXP_BUS_CYCLES(0) | /* Intel cycles */
IXP4XX_EXP_BUS_SIZE(0) | /* 512bytes addr space*/
IXP4XX_EXP_BUS_WR_EN |
IXP4XX_EXP_BUS_BYTE_EN; /* 8 bit data bus */
#endif
if (cpu_is_ixp43x()) {
ixdp425_uart.num_resources = 1;
ixdp425_uart_data[1].flags = 0;
}
gpiod_add_lookup_table(&ixdp425_i2c_gpiod_table);
platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
}
#ifdef CONFIG_ARCH_IXDP425
MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
/* Maintainer: MontaVista Software, Inc. */
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = ixp4xx_timer_init,
.atag_offset = 0x100,
.init_machine = ixdp425_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
.restart = ixp4xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_IXDP465
MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
/* Maintainer: MontaVista Software, Inc. */
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = ixp4xx_timer_init,
.atag_offset = 0x100,
.init_machine = ixdp425_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
MACHINE_END
#endif
#ifdef CONFIG_ARCH_PRPMC1100
MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
/* Maintainer: MontaVista Software, Inc. */
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = ixp4xx_timer_init,
.atag_offset = 0x100,
.init_machine = ixdp425_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
MACHINE_END
#endif
#ifdef CONFIG_MACH_KIXRP435
MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
/* Maintainer: MontaVista Software, Inc. */
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = ixp4xx_timer_init,
.atag_offset = 0x100,
.init_machine = ixdp425_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
MACHINE_END
#endif
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