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/*
* Versatile Express Core Tile Cortex A9x4 Support
*/
#include <linux/init.h>
#include <linux/gfp.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
#include <linux/clkdev.h>
#include <asm/pgtable.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/smp_twd.h>
#include <mach/ct-ca9x4.h>
#include <asm/hardware/timer-sp.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include "core.h"
#include <mach/motherboard.h>
#define V2M_PA_CS7 0x10000000
static struct map_desc ct_ca9x4_io_desc[] __initdata = {
{
.virtual = __MMIO_P2V(CT_CA9X4_MPIC),
.pfn = __phys_to_pfn(CT_CA9X4_MPIC),
.length = SZ_16K,
.type = MT_DEVICE,
}, {
.virtual = __MMIO_P2V(CT_CA9X4_SP804_TIMER),
.pfn = __phys_to_pfn(CT_CA9X4_SP804_TIMER),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = __MMIO_P2V(CT_CA9X4_L2CC),
.pfn = __phys_to_pfn(CT_CA9X4_L2CC),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static void __init ct_ca9x4_map_io(void)
{
#ifdef CONFIG_LOCAL_TIMERS
twd_base = MMIO_P2V(A9_MPCORE_TWD);
#endif
v2m_map_io(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc));
}
static void __init ct_ca9x4_init_irq(void)
{
gic_init(0, 29, MMIO_P2V(A9_MPCORE_GIC_DIST),
MMIO_P2V(A9_MPCORE_GIC_CPU));
}
#if 0
static void __init ct_ca9x4_timer_init(void)
{
writel(0, MMIO_P2V(CT_CA9X4_TIMER0) + TIMER_CTRL);
writel(0, MMIO_P2V(CT_CA9X4_TIMER1) + TIMER_CTRL);
sp804_clocksource_init(MMIO_P2V(CT_CA9X4_TIMER1));
sp804_clockevents_init(MMIO_P2V(CT_CA9X4_TIMER0), IRQ_CT_CA9X4_TIMER0);
}
static struct sys_timer ct_ca9x4_timer = {
.init = ct_ca9x4_timer_init,
};
#endif
static struct clcd_panel xvga_panel = {
.mode = {
.name = "XVGA",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15384,
.left_margin = 168,
.right_margin = 8,
.upper_margin = 29,
.lower_margin = 3,
.hsync_len = 144,
.vsync_len = 6,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED,
},
.width = -1,
.height = -1,
.tim2 = TIM2_BCD | TIM2_IPC,
.cntl = CNTL_LCDTFT | CNTL_BGR | CNTL_LCDVCOMP(1),
.bpp = 16,
};
static void ct_ca9x4_clcd_enable(struct clcd_fb *fb)
{
v2m_cfg_write(SYS_CFG_MUXFPGA | SYS_CFG_SITE_DB1, 0);
v2m_cfg_write(SYS_CFG_DVIMODE | SYS_CFG_SITE_DB1, 2);
}
static int ct_ca9x4_clcd_setup(struct clcd_fb *fb)
{
unsigned long framesize = 1024 * 768 * 2;
dma_addr_t dma;
fb->panel = &xvga_panel;
fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
&dma, GFP_KERNEL);
if (!fb->fb.screen_base) {
printk(KERN_ERR "CLCD: unable to map frame buffer\n");
return -ENOMEM;
}
fb->fb.fix.smem_start = dma;
fb->fb.fix.smem_len = framesize;
return 0;
}
static int ct_ca9x4_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
{
return dma_mmap_writecombine(&fb->dev->dev, vma, fb->fb.screen_base,
fb->fb.fix.smem_start, fb->fb.fix.smem_len);
}
static void ct_ca9x4_clcd_remove(struct clcd_fb *fb)
{
dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
fb->fb.screen_base, fb->fb.fix.smem_start);
}
static struct clcd_board ct_ca9x4_clcd_data = {
.name = "CT-CA9X4",
.check = clcdfb_check,
.decode = clcdfb_decode,
.enable = ct_ca9x4_clcd_enable,
.setup = ct_ca9x4_clcd_setup,
.mmap = ct_ca9x4_clcd_mmap,
.remove = ct_ca9x4_clcd_remove,
};
static AMBA_DEVICE(clcd, "ct:clcd", CT_CA9X4_CLCDC, &ct_ca9x4_clcd_data);
static AMBA_DEVICE(dmc, "ct:dmc", CT_CA9X4_DMC, NULL);
static AMBA_DEVICE(smc, "ct:smc", CT_CA9X4_SMC, NULL);
static AMBA_DEVICE(gpio, "ct:gpio", CT_CA9X4_GPIO, NULL);
static struct amba_device *ct_ca9x4_amba_devs[] __initdata = {
&clcd_device,
&dmc_device,
&smc_device,
&gpio_device,
};
static long ct_round(struct clk *clk, unsigned long rate)
{
return rate;
}
static int ct_set(struct clk *clk, unsigned long rate)
{
return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_DB1 | 1, rate);
}
static const struct clk_ops osc1_clk_ops = {
.round = ct_round,
.set = ct_set,
};
static struct clk osc1_clk = {
.ops = &osc1_clk_ops,
.rate = 24000000,
};
static struct clk_lookup lookups[] = {
{ /* CLCD */
.dev_id = "ct:clcd",
.clk = &osc1_clk,
},
};
static struct resource pmu_resources[] = {
[0] = {
.start = IRQ_CT_CA9X4_PMU_CPU0,
.end = IRQ_CT_CA9X4_PMU_CPU0,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = IRQ_CT_CA9X4_PMU_CPU1,
.end = IRQ_CT_CA9X4_PMU_CPU1,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = IRQ_CT_CA9X4_PMU_CPU2,
.end = IRQ_CT_CA9X4_PMU_CPU2,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = IRQ_CT_CA9X4_PMU_CPU3,
.end = IRQ_CT_CA9X4_PMU_CPU3,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device pmu_device = {
.name = "arm-pmu",
.id = ARM_PMU_DEVICE_CPU,
.num_resources = ARRAY_SIZE(pmu_resources),
.resource = pmu_resources,
};
static void __init ct_ca9x4_init(void)
{
int i;
#ifdef CONFIG_CACHE_L2X0
void __iomem *l2x0_base = MMIO_P2V(CT_CA9X4_L2CC);
/* set RAM latencies to 1 cycle for this core tile. */
writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
l2x0_init(l2x0_base, 0x00400000, 0xfe0fffff);
#endif
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
for (i = 0; i < ARRAY_SIZE(ct_ca9x4_amba_devs); i++)
amba_device_register(ct_ca9x4_amba_devs[i], &iomem_resource);
platform_device_register(&pmu_device);
}
MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
.boot_params = PLAT_PHYS_OFFSET + 0x00000100,
.map_io = ct_ca9x4_map_io,
.init_irq = ct_ca9x4_init_irq,
#if 0
.timer = &ct_ca9x4_timer,
#else
.timer = &v2m_timer,
#endif
.init_machine = ct_ca9x4_init,
MACHINE_END
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