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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/arm/mach-vexpress/ct-ca9x4.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-vexpress/ct-ca9x4.c')
-rw-r--r--arch/arm/mach-vexpress/ct-ca9x4.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
new file mode 100644
index 00000000000..b1e87c184e5
--- /dev/null
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -0,0 +1,253 @@
+/*
+ * 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/hardware/arm_timer.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
+#include <asm/pmu.h>
+#include <asm/smp_scu.h>
+#include <asm/smp_twd.h>
+
+#include <mach/ct-ca9x4.h>
+
+#include <asm/hardware/timer-sp.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+
+#include "core.h"
+
+#include <mach/motherboard.h>
+
+#include <plat/clcd.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
+ iotable_init(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), "ct-timer1");
+ sp804_clockevents_init(MMIO_P2V(CT_CA9X4_TIMER0), IRQ_CT_CA9X4_TIMER0,
+ "ct-timer0");
+}
+
+static struct sys_timer ct_ca9x4_timer = {
+ .init = ct_ca9x4_timer_init,
+};
+#endif
+
+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;
+
+ fb->panel = versatile_clcd_get_panel("XVGA");
+ if (!fb->panel)
+ return -EINVAL;
+
+ return versatile_clcd_setup_dma(fb, framesize);
+}
+
+static struct clcd_board ct_ca9x4_clcd_data = {
+ .name = "CT-CA9X4",
+ .caps = CLCD_CAP_5551 | CLCD_CAP_565,
+ .check = clcdfb_check,
+ .decode = clcdfb_decode,
+ .enable = ct_ca9x4_clcd_enable,
+ .setup = ct_ca9x4_clcd_setup,
+ .mmap = versatile_clcd_mmap_dma,
+ .remove = versatile_clcd_remove_dma,
+};
+
+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 ct_sp804_clk = {
+ .rate = 1000000,
+};
+
+static struct clk_lookup lookups[] = {
+ { /* CLCD */
+ .dev_id = "ct:clcd",
+ .clk = &osc1_clk,
+ }, { /* SP804 timers */
+ .dev_id = "sp804",
+ .con_id = "ct-timer0",
+ .clk = &ct_sp804_clk,
+ }, { /* SP804 timers */
+ .dev_id = "sp804",
+ .con_id = "ct-timer1",
+ .clk = &ct_sp804_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_early(void)
+{
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+}
+
+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
+
+ 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);
+}
+
+#ifdef CONFIG_SMP
+static void __init ct_ca9x4_init_cpu_map(void)
+{
+ int i, ncores = scu_get_core_count(MMIO_P2V(A9_MPCORE_SCU));
+
+ if (ncores > nr_cpu_ids) {
+ pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
+ ncores, nr_cpu_ids);
+ ncores = nr_cpu_ids;
+ }
+
+ for (i = 0; i < ncores; ++i)
+ set_cpu_possible(i, true);
+
+ set_smp_cross_call(gic_raise_softirq);
+}
+
+static void __init ct_ca9x4_smp_enable(unsigned int max_cpus)
+{
+ scu_enable(MMIO_P2V(A9_MPCORE_SCU));
+}
+#endif
+
+struct ct_desc ct_ca9x4_desc __initdata = {
+ .id = V2M_CT_ID_CA9,
+ .name = "CA9x4",
+ .map_io = ct_ca9x4_map_io,
+ .init_early = ct_ca9x4_init_early,
+ .init_irq = ct_ca9x4_init_irq,
+ .init_tile = ct_ca9x4_init,
+#ifdef CONFIG_SMP
+ .init_cpu_map = ct_ca9x4_init_cpu_map,
+ .smp_enable = ct_ca9x4_smp_enable,
+#endif
+};