linux/arch/arm/mach-imx/mach-qong.c
Linus Torvalds 3645f0cd96 arm-soc: sparse IRQ conversion
The I.MX platform is getting converted to use sparse IRQs. We are doing
 this for all platforms over time, because this is one of the
 requirements for building a multiplatform kernel, and generally a good
 idea.
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Merge tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc sparse IRQ conversion from Arnd Bergmann:
 "The I.MX platform is getting converted to use sparse IRQs.  We are
  doing this for all platforms over time, because this is one of the
  requirements for building a multiplatform kernel, and generally a good
  idea."

* tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: imx: select USE_OF
  ARM: imx: Fix build error due to missing irqs.h include
  ARM: imx: enable SPARSE_IRQ for imx platform
  ARM: fiq: change FIQ_START to a variable
  tty: serial: imx: remove the use of MXC_INTERNAL_IRQS
  ARM: imx: remove unneeded mach/irq.h inclusion
  i2c: imx: remove unneeded mach/irqs.h inclusion
  ARM: imx: add a legacy irqdomain for mx31ads
  ARM: imx: add a legacy irqdomain for 3ds_debugboard
  ARM: imx: pass gpio than irq number into mxc_expio_init
  ARM: imx: leave irq_base of wm8350_platform_data uninitialized
  dma: ipu: remove the use of ipu_platform_data
  ARM: imx: move irq_domain_add_legacy call into avic driver
  ARM: imx: move irq_domain_add_legacy call into tzic driver
  gpio/mxc: move irq_domain_add_legacy call into gpio driver
  ARM: imx: eliminate macro IRQ_GPIOx()
  ARM: imx: eliminate macro IOMUX_TO_IRQ()
  ARM: imx: eliminate macro IMX_GPIO_TO_IRQ()
2012-07-23 17:36:02 -07:00

278 lines
6.7 KiB
C

/*
* Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/memory.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/nand.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <mach/common.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <mach/iomux-mx3.h>
#include "devices-imx31.h"
/* FPGA defines */
#define QONG_FPGA_VERSION(major, minor, rev) \
(((major & 0xF) << 12) | ((minor & 0xF) << 8) | (rev & 0xFF))
#define QONG_FPGA_BASEADDR MX31_CS1_BASE_ADDR
#define QONG_FPGA_PERIPH_SIZE (1 << 24)
#define QONG_FPGA_CTRL_BASEADDR QONG_FPGA_BASEADDR
#define QONG_FPGA_CTRL_SIZE 0x10
/* FPGA control registers */
#define QONG_FPGA_CTRL_VERSION 0x00
#define QONG_DNET_ID 1
#define QONG_DNET_BASEADDR \
(QONG_FPGA_BASEADDR + QONG_DNET_ID * QONG_FPGA_PERIPH_SIZE)
#define QONG_DNET_SIZE 0x00001000
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static int uart_pins[] = {
MX31_PIN_CTS1__CTS1,
MX31_PIN_RTS1__RTS1,
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1
};
static inline void __init mxc_init_imx_uart(void)
{
mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins),
"uart-0");
imx31_add_imx_uart0(&uart_pdata);
}
static struct resource dnet_resources[] = {
{
.name = "dnet-memory",
.start = QONG_DNET_BASEADDR,
.end = QONG_DNET_BASEADDR + QONG_DNET_SIZE - 1,
.flags = IORESOURCE_MEM,
}, {
/* irq number is run-time assigned */
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device dnet_device = {
.name = "dnet",
.id = -1,
.num_resources = ARRAY_SIZE(dnet_resources),
.resource = dnet_resources,
};
static int __init qong_init_dnet(void)
{
int ret;
dnet_resources[1].start =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1));
dnet_resources[1].end =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1));
ret = platform_device_register(&dnet_device);
return ret;
}
/* MTD NOR flash */
static struct physmap_flash_data qong_flash_data = {
.width = 2,
};
static struct resource qong_flash_resource = {
.start = MX31_CS0_BASE_ADDR,
.end = MX31_CS0_BASE_ADDR + SZ_128M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device qong_nor_mtd_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &qong_flash_data,
},
.resource = &qong_flash_resource,
.num_resources = 1,
};
static void qong_init_nor_mtd(void)
{
(void)platform_device_register(&qong_nor_mtd_device);
}
/*
* Hardware specific access to control-lines
*/
static void qong_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
struct nand_chip *nand_chip = mtd->priv;
if (cmd == NAND_CMD_NONE)
return;
if (ctrl & NAND_CLE)
writeb(cmd, nand_chip->IO_ADDR_W + (1 << 24));
else
writeb(cmd, nand_chip->IO_ADDR_W + (1 << 23));
}
/*
* Read the Device Ready pin.
*/
static int qong_nand_device_ready(struct mtd_info *mtd)
{
return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_NFRB));
}
static void qong_nand_select_chip(struct mtd_info *mtd, int chip)
{
if (chip >= 0)
gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
else
gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 1);
}
static struct platform_nand_data qong_nand_data = {
.chip = {
.nr_chips = 1,
.chip_delay = 20,
.options = 0,
},
.ctrl = {
.cmd_ctrl = qong_nand_cmd_ctrl,
.dev_ready = qong_nand_device_ready,
.select_chip = qong_nand_select_chip,
}
};
static struct resource qong_nand_resource = {
.start = MX31_CS3_BASE_ADDR,
.end = MX31_CS3_BASE_ADDR + SZ_32M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device qong_nand_device = {
.name = "gen_nand",
.id = -1,
.dev = {
.platform_data = &qong_nand_data,
},
.num_resources = 1,
.resource = &qong_nand_resource,
};
static void __init qong_init_nand_mtd(void)
{
/* init CS */
__raw_writel(0x00004f00, MX31_IO_ADDRESS(MX31_WEIM_CSCRxU(3)));
__raw_writel(0x20013b31, MX31_IO_ADDRESS(MX31_WEIM_CSCRxL(3)));
__raw_writel(0x00020800, MX31_IO_ADDRESS(MX31_WEIM_CSCRxA(3)));
mxc_iomux_set_gpr(MUX_SDCTL_CSD1_SEL, true);
/* enable pin */
mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFCE_B, IOMUX_CONFIG_GPIO));
if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), "nand_enable"))
gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_NFCE_B), 0);
/* ready/busy pin */
mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFRB, IOMUX_CONFIG_GPIO));
if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFRB), "nand_rdy"))
gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFRB));
/* write protect pin */
mxc_iomux_mode(IOMUX_MODE(MX31_PIN_NFWP_B, IOMUX_CONFIG_GPIO));
if (!gpio_request(IOMUX_TO_GPIO(MX31_PIN_NFWP_B), "nand_wp"))
gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_NFWP_B));
platform_device_register(&qong_nand_device);
}
static void __init qong_init_fpga(void)
{
void __iomem *regs;
u32 fpga_ver;
regs = ioremap(QONG_FPGA_CTRL_BASEADDR, QONG_FPGA_CTRL_SIZE);
if (!regs) {
printk(KERN_ERR "%s: failed to map registers, aborting.\n",
__func__);
return;
}
fpga_ver = readl(regs + QONG_FPGA_CTRL_VERSION);
iounmap(regs);
printk(KERN_INFO "Qong FPGA version %d.%d.%d\n",
(fpga_ver & 0xF000) >> 12,
(fpga_ver & 0x0F00) >> 8, fpga_ver & 0x00FF);
if (fpga_ver < QONG_FPGA_VERSION(0, 8, 7)) {
printk(KERN_ERR "qong: Unexpected FPGA version, FPGA-based "
"devices won't be registered!\n");
return;
}
/* register FPGA-based devices */
qong_init_nand_mtd();
qong_init_dnet();
}
/*
* Board specific initialization.
*/
static void __init qong_init(void)
{
imx31_soc_init();
mxc_init_imx_uart();
qong_init_nor_mtd();
qong_init_fpga();
imx31_add_imx2_wdt();
}
static void __init qong_timer_init(void)
{
mx31_clocks_init(26000000);
}
static struct sys_timer qong_timer = {
.init = qong_timer_init,
};
MACHINE_START(QONG, "Dave/DENX QongEVB-LITE")
/* Maintainer: DENX Software Engineering GmbH */
.atag_offset = 0x100,
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.handle_irq = imx31_handle_irq,
.timer = &qong_timer,
.init_machine = qong_init,
.restart = mxc_restart,
MACHINE_END