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linux/arch/arm/mach-versatile/core.c
Grant Likely 3ba7222ac9 arm/versatile: Add device tree support 
For testing the dt work, define a dt-enabled versatile platform.

This patch adds a new versatile platform for when using the device
tree.  Add platform and amba devices are discovered and registered by
parsing the device tree.  Clocks and initial io mappings are still
configured statically.

This patch still depends on some static platform_data for a few devices
which is passed via the auxdata structure to of_platform_populate(),
but it is a viable starting point until the drivers can get all
configuration data out of the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00

821 lines
21 KiB
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/*
* linux/arch/arm/mach-versatile/core.c
*
* Copyright (C) 1999 - 2003 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/amba/pl022.h>
#include <linux/io.h>
#include <linux/gfp.h>
#include <linux/clkdev.h>
#include <linux/mtd/physmap.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/icst.h>
#include <asm/hardware/vic.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <mach/platform.h>
#include <asm/hardware/timer-sp.h>
#include <plat/clcd.h>
#include <plat/fpga-irq.h>
#include <plat/sched_clock.h>
#include "core.h"
/*
* All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
* is the (PA >> 12).
*
* Setup a VA for the Versatile Vectored Interrupt Controller.
*/
#define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE)
#define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE)
static struct fpga_irq_data sic_irq = {
.base = VA_SIC_BASE,
.irq_start = IRQ_SIC_START,
.chip.name = "SIC",
};
#if 1
#define IRQ_MMCI0A IRQ_VICSOURCE22
#define IRQ_AACI IRQ_VICSOURCE24
#define IRQ_ETH IRQ_VICSOURCE25
#define PIC_MASK 0xFFD00000
#else
#define IRQ_MMCI0A IRQ_SIC_MMCI0A
#define IRQ_AACI IRQ_SIC_AACI
#define IRQ_ETH IRQ_SIC_ETH
#define PIC_MASK 0
#endif
/* Lookup table for finding a DT node that represents the vic instance */
static const struct of_device_id vic_of_match[] __initconst = {
{ .compatible = "arm,versatile-vic", },
{}
};
static const struct of_device_id sic_of_match[] __initconst = {
{ .compatible = "arm,versatile-sic", },
{}
};
void __init versatile_init_irq(void)
{
vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0, 0);
irq_domain_generate_simple(vic_of_match, VERSATILE_VIC_BASE, IRQ_VIC_START);
writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
fpga_irq_init(IRQ_VICSOURCE31, ~PIC_MASK, &sic_irq);
irq_domain_generate_simple(sic_of_match, VERSATILE_SIC_BASE, IRQ_SIC_START);
/*
* Interrupts on secondary controller from 0 to 8 are routed to
* source 31 on PIC.
* Interrupts from 21 to 31 are routed directly to the VIC on
* the corresponding number on primary controller. This is controlled
* by setting PIC_ENABLEx.
*/
writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE);
}
static struct map_desc versatile_io_desc[] __initdata = {
{
.virtual = IO_ADDRESS(VERSATILE_SYS_BASE),
.pfn = __phys_to_pfn(VERSATILE_SYS_BASE),
.length = SZ_4K,
.type = MT_DEVICE
}, {
.virtual = IO_ADDRESS(VERSATILE_SIC_BASE),
.pfn = __phys_to_pfn(VERSATILE_SIC_BASE),
.length = SZ_4K,
.type = MT_DEVICE
}, {
.virtual = IO_ADDRESS(VERSATILE_VIC_BASE),
.pfn = __phys_to_pfn(VERSATILE_VIC_BASE),
.length = SZ_4K,
.type = MT_DEVICE
}, {
.virtual = IO_ADDRESS(VERSATILE_SCTL_BASE),
.pfn = __phys_to_pfn(VERSATILE_SCTL_BASE),
.length = SZ_4K * 9,
.type = MT_DEVICE
},
#ifdef CONFIG_MACH_VERSATILE_AB
{
.virtual = IO_ADDRESS(VERSATILE_GPIO0_BASE),
.pfn = __phys_to_pfn(VERSATILE_GPIO0_BASE),
.length = SZ_4K,
.type = MT_DEVICE
}, {
.virtual = IO_ADDRESS(VERSATILE_IB2_BASE),
.pfn = __phys_to_pfn(VERSATILE_IB2_BASE),
.length = SZ_64M,
.type = MT_DEVICE
},
#endif
#ifdef CONFIG_DEBUG_LL
{
.virtual = IO_ADDRESS(VERSATILE_UART0_BASE),
.pfn = __phys_to_pfn(VERSATILE_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE
},
#endif
#ifdef CONFIG_PCI
{
.virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE),
.pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE),
.length = SZ_4K,
.type = MT_DEVICE
}, {
.virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE,
.pfn = __phys_to_pfn(VERSATILE_PCI_BASE),
.length = VERSATILE_PCI_BASE_SIZE,
.type = MT_DEVICE
}, {
.virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE,
.pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
.length = VERSATILE_PCI_CFG_BASE_SIZE,
.type = MT_DEVICE
},
#if 0
{
.virtual = VERSATILE_PCI_VIRT_MEM_BASE0,
.pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0),
.length = SZ_16M,
.type = MT_DEVICE
}, {
.virtual = VERSATILE_PCI_VIRT_MEM_BASE1,
.pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE1),
.length = SZ_16M,
.type = MT_DEVICE
}, {
.virtual = VERSATILE_PCI_VIRT_MEM_BASE2,
.pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE2),
.length = SZ_16M,
.type = MT_DEVICE
},
#endif
#endif
};
void __init versatile_map_io(void)
{
iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
}
#define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
{
u32 val;
val = __raw_readl(VERSATILE_FLASHCTRL);
if (on)
val |= VERSATILE_FLASHPROG_FLVPPEN;
else
val &= ~VERSATILE_FLASHPROG_FLVPPEN;
__raw_writel(val, VERSATILE_FLASHCTRL);
}
static struct physmap_flash_data versatile_flash_data = {
.width = 4,
.set_vpp = versatile_flash_set_vpp,
};
static struct resource versatile_flash_resource = {
.start = VERSATILE_FLASH_BASE,
.end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device versatile_flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &versatile_flash_data,
},
.num_resources = 1,
.resource = &versatile_flash_resource,
};
static struct resource smc91x_resources[] = {
[0] = {
.start = VERSATILE_ETH_BASE,
.end = VERSATILE_ETH_BASE + SZ_64K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_ETH,
.end = IRQ_ETH,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
static struct resource versatile_i2c_resource = {
.start = VERSATILE_I2C_BASE,
.end = VERSATILE_I2C_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device versatile_i2c_device = {
.name = "versatile-i2c",
.id = 0,
.num_resources = 1,
.resource = &versatile_i2c_resource,
};
static struct i2c_board_info versatile_i2c_board_info[] = {
{
I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
},
};
static int __init versatile_i2c_init(void)
{
return i2c_register_board_info(0, versatile_i2c_board_info,
ARRAY_SIZE(versatile_i2c_board_info));
}
arch_initcall(versatile_i2c_init);
#define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
unsigned int mmc_status(struct device *dev)
{
struct amba_device *adev = container_of(dev, struct amba_device, dev);
u32 mask;
if (adev->res.start == VERSATILE_MMCI0_BASE)
mask = 1;
else
mask = 2;
return readl(VERSATILE_SYSMCI) & mask;
}
static struct mmci_platform_data mmc0_plat_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.status = mmc_status,
.gpio_wp = -1,
.gpio_cd = -1,
};
static struct resource char_lcd_resources[] = {
{
.start = VERSATILE_CHAR_LCD_BASE,
.end = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1),
.flags = IORESOURCE_MEM,
},
};
static struct platform_device char_lcd_device = {
.name = "arm-charlcd",
.id = -1,
.num_resources = ARRAY_SIZE(char_lcd_resources),
.resource = char_lcd_resources,
};
/*
* Clock handling
*/
static const struct icst_params versatile_oscvco_params = {
.ref = 24000000,
.vco_max = ICST307_VCO_MAX,
.vco_min = ICST307_VCO_MIN,
.vd_min = 4 + 8,
.vd_max = 511 + 8,
.rd_min = 1 + 2,
.rd_max = 127 + 2,
.s2div = icst307_s2div,
.idx2s = icst307_idx2s,
};
static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
{
void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET;
u32 val;
val = readl(clk->vcoreg) & ~0x7ffff;
val |= vco.v | (vco.r << 9) | (vco.s << 16);
writel(0xa05f, sys_lock);
writel(val, clk->vcoreg);
writel(0, sys_lock);
}
static const struct clk_ops osc4_clk_ops = {
.round = icst_clk_round,
.set = icst_clk_set,
.setvco = versatile_oscvco_set,
};
static struct clk osc4_clk = {
.ops = &osc4_clk_ops,
.params = &versatile_oscvco_params,
};
/*
* These are fixed clocks.
*/
static struct clk ref24_clk = {
.rate = 24000000,
};
static struct clk sp804_clk = {
.rate = 1000000,
};
static struct clk dummy_apb_pclk;
static struct clk_lookup lookups[] = {
{ /* AMBA bus clock */
.con_id = "apb_pclk",
.clk = &dummy_apb_pclk,
}, { /* UART0 */
.dev_id = "dev:f1",
.clk = &ref24_clk,
}, { /* UART1 */
.dev_id = "dev:f2",
.clk = &ref24_clk,
}, { /* UART2 */
.dev_id = "dev:f3",
.clk = &ref24_clk,
}, { /* UART3 */
.dev_id = "fpga:09",
.clk = &ref24_clk,
}, { /* KMI0 */
.dev_id = "fpga:06",
.clk = &ref24_clk,
}, { /* KMI1 */
.dev_id = "fpga:07",
.clk = &ref24_clk,
}, { /* MMC0 */
.dev_id = "fpga:05",
.clk = &ref24_clk,
}, { /* MMC1 */
.dev_id = "fpga:0b",
.clk = &ref24_clk,
}, { /* SSP */
.dev_id = "dev:f4",
.clk = &ref24_clk,
}, { /* CLCD */
.dev_id = "dev:20",
.clk = &osc4_clk,
}, { /* SP804 timers */
.dev_id = "sp804",
.clk = &sp804_clk,
},
};
/*
* CLCD support.
*/
#define SYS_CLCD_MODE_MASK (3 << 0)
#define SYS_CLCD_MODE_888 (0 << 0)
#define SYS_CLCD_MODE_5551 (1 << 0)
#define SYS_CLCD_MODE_565_RLSB (2 << 0)
#define SYS_CLCD_MODE_565_BLSB (3 << 0)
#define SYS_CLCD_NLCDIOON (1 << 2)
#define SYS_CLCD_VDDPOSSWITCH (1 << 3)
#define SYS_CLCD_PWR3V5SWITCH (1 << 4)
#define SYS_CLCD_ID_MASK (0x1f << 8)
#define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
#define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
#define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
#define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
#define SYS_CLCD_ID_VGA (0x1f << 8)
static bool is_sanyo_2_5_lcd;
/*
* Disable all display connectors on the interface module.
*/
static void versatile_clcd_disable(struct clcd_fb *fb)
{
void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
u32 val;
val = readl(sys_clcd);
val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
writel(val, sys_clcd);
#ifdef CONFIG_MACH_VERSATILE_AB
/*
* If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
*/
if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
unsigned long ctrl;
ctrl = readl(versatile_ib2_ctrl);
ctrl &= ~0x01;
writel(ctrl, versatile_ib2_ctrl);
}
#endif
}
/*
* Enable the relevant connector on the interface module.
*/
static void versatile_clcd_enable(struct clcd_fb *fb)
{
struct fb_var_screeninfo *var = &fb->fb.var;
void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
u32 val;
val = readl(sys_clcd);
val &= ~SYS_CLCD_MODE_MASK;
switch (var->green.length) {
case 5:
val |= SYS_CLCD_MODE_5551;
break;
case 6:
if (var->red.offset == 0)
val |= SYS_CLCD_MODE_565_RLSB;
else
val |= SYS_CLCD_MODE_565_BLSB;
break;
case 8:
val |= SYS_CLCD_MODE_888;
break;
}
/*
* Set the MUX
*/
writel(val, sys_clcd);
/*
* And now enable the PSUs
*/
val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
writel(val, sys_clcd);
#ifdef CONFIG_MACH_VERSATILE_AB
/*
* If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
*/
if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
unsigned long ctrl;
ctrl = readl(versatile_ib2_ctrl);
ctrl |= 0x01;
writel(ctrl, versatile_ib2_ctrl);
}
#endif
}
/*
* Detect which LCD panel is connected, and return the appropriate
* clcd_panel structure. Note: we do not have any information on
* the required timings for the 8.4in panel, so we presently assume
* VGA timings.
*/
static int versatile_clcd_setup(struct clcd_fb *fb)
{
void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
const char *panel_name;
u32 val;
is_sanyo_2_5_lcd = false;
val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
if (val == SYS_CLCD_ID_SANYO_3_8)
panel_name = "Sanyo TM38QV67A02A";
else if (val == SYS_CLCD_ID_SANYO_2_5) {
panel_name = "Sanyo QVGA Portrait";
is_sanyo_2_5_lcd = true;
} else if (val == SYS_CLCD_ID_EPSON_2_2)
panel_name = "Epson L2F50113T00";
else if (val == SYS_CLCD_ID_VGA)
panel_name = "VGA";
else {
printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
val);
panel_name = "VGA";
}
fb->panel = versatile_clcd_get_panel(panel_name);
if (!fb->panel)
return -EINVAL;
return versatile_clcd_setup_dma(fb, SZ_1M);
}
static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
{
clcdfb_decode(fb, regs);
/* Always clear BGR for RGB565: we do the routing externally */
if (fb->fb.var.green.length == 6)
regs->cntl &= ~CNTL_BGR;
}
static struct clcd_board clcd_plat_data = {
.name = "Versatile",
.caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
.check = clcdfb_check,
.decode = versatile_clcd_decode,
.disable = versatile_clcd_disable,
.enable = versatile_clcd_enable,
.setup = versatile_clcd_setup,
.mmap = versatile_clcd_mmap_dma,
.remove = versatile_clcd_remove_dma,
};
static struct pl061_platform_data gpio0_plat_data = {
.gpio_base = 0,
.irq_base = IRQ_GPIO0_START,
};
static struct pl061_platform_data gpio1_plat_data = {
.gpio_base = 8,
.irq_base = IRQ_GPIO1_START,
};
static struct pl022_ssp_controller ssp0_plat_data = {
.bus_id = 0,
.enable_dma = 0,
.num_chipselect = 1,
};
#define AACI_IRQ { IRQ_AACI, NO_IRQ }
#define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
#define KMI0_IRQ { IRQ_SIC_KMI0, NO_IRQ }
#define KMI1_IRQ { IRQ_SIC_KMI1, NO_IRQ }
/*
* These devices are connected directly to the multi-layer AHB switch
*/
#define SMC_IRQ { NO_IRQ, NO_IRQ }
#define MPMC_IRQ { NO_IRQ, NO_IRQ }
#define CLCD_IRQ { IRQ_CLCDINT, NO_IRQ }
#define DMAC_IRQ { IRQ_DMAINT, NO_IRQ }
/*
* These devices are connected via the core APB bridge
*/
#define SCTL_IRQ { NO_IRQ, NO_IRQ }
#define WATCHDOG_IRQ { IRQ_WDOGINT, NO_IRQ }
#define GPIO0_IRQ { IRQ_GPIOINT0, NO_IRQ }
#define GPIO1_IRQ { IRQ_GPIOINT1, NO_IRQ }
#define RTC_IRQ { IRQ_RTCINT, NO_IRQ }
/*
* These devices are connected via the DMA APB bridge
*/
#define SCI_IRQ { IRQ_SCIINT, NO_IRQ }
#define UART0_IRQ { IRQ_UARTINT0, NO_IRQ }
#define UART1_IRQ { IRQ_UARTINT1, NO_IRQ }
#define UART2_IRQ { IRQ_UARTINT2, NO_IRQ }
#define SSP_IRQ { IRQ_SSPINT, NO_IRQ }
/* FPGA Primecells */
AMBA_DEVICE(aaci, "fpga:04", AACI, NULL);
AMBA_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data);
AMBA_DEVICE(kmi0, "fpga:06", KMI0, NULL);
AMBA_DEVICE(kmi1, "fpga:07", KMI1, NULL);
/* DevChip Primecells */
AMBA_DEVICE(smc, "dev:00", SMC, NULL);
AMBA_DEVICE(mpmc, "dev:10", MPMC, NULL);
AMBA_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data);
AMBA_DEVICE(dmac, "dev:30", DMAC, NULL);
AMBA_DEVICE(sctl, "dev:e0", SCTL, NULL);
AMBA_DEVICE(wdog, "dev:e1", WATCHDOG, NULL);
AMBA_DEVICE(gpio0, "dev:e4", GPIO0, &gpio0_plat_data);
AMBA_DEVICE(gpio1, "dev:e5", GPIO1, &gpio1_plat_data);
AMBA_DEVICE(rtc, "dev:e8", RTC, NULL);
AMBA_DEVICE(sci0, "dev:f0", SCI, NULL);
AMBA_DEVICE(uart0, "dev:f1", UART0, NULL);
AMBA_DEVICE(uart1, "dev:f2", UART1, NULL);
AMBA_DEVICE(uart2, "dev:f3", UART2, NULL);
AMBA_DEVICE(ssp0, "dev:f4", SSP, &ssp0_plat_data);
static struct amba_device *amba_devs[] __initdata = {
&dmac_device,
&uart0_device,
&uart1_device,
&uart2_device,
&smc_device,
&mpmc_device,
&clcd_device,
&sctl_device,
&wdog_device,
&gpio0_device,
&gpio1_device,
&rtc_device,
&sci0_device,
&ssp0_device,
&aaci_device,
&mmc0_device,
&kmi0_device,
&kmi1_device,
};
#ifdef CONFIG_OF
/*
* Lookup table for attaching a specific name and platform_data pointer to
* devices as they get created by of_platform_populate(). Ideally this table
* would not exist, but the current clock implementation depends on some devices
* having a specific name.
*/
struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", NULL),
#if 0
/*
* These entries are unnecessary because no clocks referencing
* them. I've left them in for now as place holders in case
* any of them need to be added back, but they should be
* removed before actually committing this patch. --gcl
*/
OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL),
#endif
{}
};
#endif
#ifdef CONFIG_LEDS
#define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET)
static void versatile_leds_event(led_event_t ledevt)
{
unsigned long flags;
u32 val;
local_irq_save(flags);
val = readl(VA_LEDS_BASE);
switch (ledevt) {
case led_idle_start:
val = val & ~VERSATILE_SYS_LED0;
break;
case led_idle_end:
val = val | VERSATILE_SYS_LED0;
break;
case led_timer:
val = val ^ VERSATILE_SYS_LED1;
break;
case led_halted:
val = 0;
break;
default:
break;
}
writel(val, VA_LEDS_BASE);
local_irq_restore(flags);
}
#endif /* CONFIG_LEDS */
/* Early initializations */
void __init versatile_init_early(void)
{
void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET;
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
}
void __init versatile_init(void)
{
int i;
platform_device_register(&versatile_flash_device);
platform_device_register(&versatile_i2c_device);
platform_device_register(&smc91x_device);
platform_device_register(&char_lcd_device);
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
}
#ifdef CONFIG_LEDS
leds_event = versatile_leds_event;
#endif
}
/*
* Where is the timer (VA)?
*/
#define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE)
#define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
#define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE)
#define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
/*
* Set up timer interrupt, and return the current time in seconds.
*/
static void __init versatile_timer_init(void)
{
u32 val;
/*
* set clock frequency:
* VERSATILE_REFCLK is 32KHz
* VERSATILE_TIMCLK is 1MHz
*/
val = readl(__io_address(VERSATILE_SCTL_BASE));
writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) |
(VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) |
(VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) |
(VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val,
__io_address(VERSATILE_SCTL_BASE));
/*
* Initialise to a known state (all timers off)
*/
writel(0, TIMER0_VA_BASE + TIMER_CTRL);
writel(0, TIMER1_VA_BASE + TIMER_CTRL);
writel(0, TIMER2_VA_BASE + TIMER_CTRL);
writel(0, TIMER3_VA_BASE + TIMER_CTRL);
sp804_clocksource_init(TIMER3_VA_BASE, "timer3");
sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0");
}
struct sys_timer versatile_timer = {
.init = versatile_timer_init,
};
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