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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-integrator/integrator_cp.c
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-integrator/integrator_cp.c')
-rw-r--r--arch/arm/mach-integrator/integrator_cp.c528
1 files changed, 528 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
new file mode 100644
index 000000000000..68e15c36e336
--- /dev/null
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -0,0 +1,528 @@
+/*
+ * linux/arch/arm/mach-integrator/integrator_cp.c
+ *
+ * Copyright (C) 2003 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.
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/sysdev.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/hardware/amba.h>
+#include <asm/hardware/amba_kmi.h>
+#include <asm/hardware/amba_clcd.h>
+#include <asm/hardware/icst525.h>
+
+#include <asm/arch/cm.h>
+#include <asm/arch/lm.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/mmc.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+
+#include "common.h"
+#include "clock.h"
+
+#define INTCP_PA_MMC_BASE 0x1c000000
+#define INTCP_PA_AACI_BASE 0x1d000000
+
+#define INTCP_PA_FLASH_BASE 0x24000000
+#define INTCP_FLASH_SIZE SZ_32M
+
+#define INTCP_PA_CLCD_BASE 0xc0000000
+
+#define INTCP_VA_CIC_BASE 0xf1000040
+#define INTCP_VA_PIC_BASE 0xf1400000
+#define INTCP_VA_SIC_BASE 0xfca00000
+
+#define INTCP_PA_ETH_BASE 0xc8000000
+#define INTCP_ETH_SIZE 0x10
+
+#define INTCP_VA_CTRL_BASE 0xfcb00000
+#define INTCP_FLASHPROG 0x04
+#define CINTEGRATOR_FLASHPROG_FLVPPEN (1 << 0)
+#define CINTEGRATOR_FLASHPROG_FLWREN (1 << 1)
+
+/*
+ * Logical Physical
+ * f1000000 10000000 Core module registers
+ * f1100000 11000000 System controller registers
+ * f1200000 12000000 EBI registers
+ * f1300000 13000000 Counter/Timer
+ * f1400000 14000000 Interrupt controller
+ * f1600000 16000000 UART 0
+ * f1700000 17000000 UART 1
+ * f1a00000 1a000000 Debug LEDs
+ * f1b00000 1b000000 GPIO
+ */
+
+static struct map_desc intcp_io_desc[] __initdata = {
+ { IO_ADDRESS(INTEGRATOR_HDR_BASE), INTEGRATOR_HDR_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_SC_BASE), INTEGRATOR_SC_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_EBI_BASE), INTEGRATOR_EBI_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_CT_BASE), INTEGRATOR_CT_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_IC_BASE), INTEGRATOR_IC_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_UART0_BASE), INTEGRATOR_UART0_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_UART1_BASE), INTEGRATOR_UART1_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_DBG_BASE), INTEGRATOR_DBG_BASE, SZ_4K, MT_DEVICE },
+ { IO_ADDRESS(INTEGRATOR_GPIO_BASE), INTEGRATOR_GPIO_BASE, SZ_4K, MT_DEVICE },
+ { 0xfc900000, 0xc9000000, SZ_4K, MT_DEVICE },
+ { 0xfca00000, 0xca000000, SZ_4K, MT_DEVICE },
+ { 0xfcb00000, 0xcb000000, SZ_4K, MT_DEVICE },
+};
+
+static void __init intcp_map_io(void)
+{
+ iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc));
+}
+
+#define cic_writel __raw_writel
+#define cic_readl __raw_readl
+#define pic_writel __raw_writel
+#define pic_readl __raw_readl
+#define sic_writel __raw_writel
+#define sic_readl __raw_readl
+
+static void cic_mask_irq(unsigned int irq)
+{
+ irq -= IRQ_CIC_START;
+ cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
+}
+
+static void cic_unmask_irq(unsigned int irq)
+{
+ irq -= IRQ_CIC_START;
+ cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_SET);
+}
+
+static struct irqchip cic_chip = {
+ .ack = cic_mask_irq,
+ .mask = cic_mask_irq,
+ .unmask = cic_unmask_irq,
+};
+
+static void pic_mask_irq(unsigned int irq)
+{
+ irq -= IRQ_PIC_START;
+ pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
+}
+
+static void pic_unmask_irq(unsigned int irq)
+{
+ irq -= IRQ_PIC_START;
+ pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_SET);
+}
+
+static struct irqchip pic_chip = {
+ .ack = pic_mask_irq,
+ .mask = pic_mask_irq,
+ .unmask = pic_unmask_irq,
+};
+
+static void sic_mask_irq(unsigned int irq)
+{
+ irq -= IRQ_SIC_START;
+ sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
+}
+
+static void sic_unmask_irq(unsigned int irq)
+{
+ irq -= IRQ_SIC_START;
+ sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_SET);
+}
+
+static struct irqchip sic_chip = {
+ .ack = sic_mask_irq,
+ .mask = sic_mask_irq,
+ .unmask = sic_unmask_irq,
+};
+
+static void
+sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+ unsigned long status = sic_readl(INTCP_VA_SIC_BASE + IRQ_STATUS);
+
+ if (status == 0) {
+ do_bad_IRQ(irq, desc, regs);
+ return;
+ }
+
+ do {
+ irq = ffs(status) - 1;
+ status &= ~(1 << irq);
+
+ irq += IRQ_SIC_START;
+
+ desc = irq_desc + irq;
+ desc->handle(irq, desc, regs);
+ } while (status);
+}
+
+static void __init intcp_init_irq(void)
+{
+ unsigned int i;
+
+ /*
+ * Disable all interrupt sources
+ */
+ pic_writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
+ pic_writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
+
+ for (i = IRQ_PIC_START; i <= IRQ_PIC_END; i++) {
+ if (i == 11)
+ i = 22;
+ if (i == IRQ_CP_CPPLDINT)
+ i++;
+ if (i == 29)
+ break;
+ set_irq_chip(i, &pic_chip);
+ set_irq_handler(i, do_level_IRQ);
+ set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+ }
+
+ cic_writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
+ cic_writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
+
+ for (i = IRQ_CIC_START; i <= IRQ_CIC_END; i++) {
+ set_irq_chip(i, &cic_chip);
+ set_irq_handler(i, do_level_IRQ);
+ set_irq_flags(i, IRQF_VALID);
+ }
+
+ sic_writel(0x00000fff, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
+ sic_writel(0x00000fff, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
+
+ for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) {
+ set_irq_chip(i, &sic_chip);
+ set_irq_handler(i, do_level_IRQ);
+ set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+ }
+
+ set_irq_handler(IRQ_CP_CPPLDINT, sic_handle_irq);
+ pic_unmask_irq(IRQ_CP_CPPLDINT);
+}
+
+/*
+ * Clock handling
+ */
+#define CM_LOCK (IO_ADDRESS(INTEGRATOR_HDR_BASE)+INTEGRATOR_HDR_LOCK_OFFSET)
+#define CM_AUXOSC (IO_ADDRESS(INTEGRATOR_HDR_BASE)+0x1c)
+
+static const struct icst525_params cp_auxvco_params = {
+ .ref = 24000,
+ .vco_max = 320000,
+ .vd_min = 8,
+ .vd_max = 263,
+ .rd_min = 3,
+ .rd_max = 65,
+};
+
+static void cp_auxvco_set(struct clk *clk, struct icst525_vco vco)
+{
+ u32 val;
+
+ val = readl(CM_AUXOSC) & ~0x7ffff;
+ val |= vco.v | (vco.r << 9) | (vco.s << 16);
+
+ writel(0xa05f, CM_LOCK);
+ writel(val, CM_AUXOSC);
+ writel(0, CM_LOCK);
+}
+
+static struct clk cp_clcd_clk = {
+ .name = "CLCDCLK",
+ .params = &cp_auxvco_params,
+ .setvco = cp_auxvco_set,
+};
+
+static struct clk cp_mmci_clk = {
+ .name = "MCLK",
+ .rate = 14745600,
+};
+
+/*
+ * Flash handling.
+ */
+static int intcp_flash_init(void)
+{
+ u32 val;
+
+ val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+ val |= CINTEGRATOR_FLASHPROG_FLWREN;
+ writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+
+ return 0;
+}
+
+static void intcp_flash_exit(void)
+{
+ u32 val;
+
+ val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+ val &= ~(CINTEGRATOR_FLASHPROG_FLVPPEN|CINTEGRATOR_FLASHPROG_FLWREN);
+ writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+}
+
+static void intcp_flash_set_vpp(int on)
+{
+ u32 val;
+
+ val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+ if (on)
+ val |= CINTEGRATOR_FLASHPROG_FLVPPEN;
+ else
+ val &= ~CINTEGRATOR_FLASHPROG_FLVPPEN;
+ writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
+}
+
+static struct flash_platform_data intcp_flash_data = {
+ .map_name = "cfi_probe",
+ .width = 4,
+ .init = intcp_flash_init,
+ .exit = intcp_flash_exit,
+ .set_vpp = intcp_flash_set_vpp,
+};
+
+static struct resource intcp_flash_resource = {
+ .start = INTCP_PA_FLASH_BASE,
+ .end = INTCP_PA_FLASH_BASE + INTCP_FLASH_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device intcp_flash_device = {
+ .name = "armflash",
+ .id = 0,
+ .dev = {
+ .platform_data = &intcp_flash_data,
+ },
+ .num_resources = 1,
+ .resource = &intcp_flash_resource,
+};
+
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .start = INTCP_PA_ETH_BASE,
+ .end = INTCP_PA_ETH_BASE + INTCP_ETH_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CP_ETHINT,
+ .end = IRQ_CP_ETHINT,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .resource = smc91x_resources,
+};
+
+static struct platform_device *intcp_devs[] __initdata = {
+ &intcp_flash_device,
+ &smc91x_device,
+};
+
+/*
+ * It seems that the card insertion interrupt remains active after
+ * we've acknowledged it. We therefore ignore the interrupt, and
+ * rely on reading it from the SIC. This also means that we must
+ * clear the latched interrupt.
+ */
+static unsigned int mmc_status(struct device *dev)
+{
+ unsigned int status = readl(0xfca00004);
+ writel(8, 0xfcb00008);
+
+ return status & 8;
+}
+
+static struct mmc_platform_data mmc_data = {
+ .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
+ .status = mmc_status,
+};
+
+static struct amba_device mmc_device = {
+ .dev = {
+ .bus_id = "mb:1c",
+ .platform_data = &mmc_data,
+ },
+ .res = {
+ .start = INTCP_PA_MMC_BASE,
+ .end = INTCP_PA_MMC_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = { IRQ_CP_MMCIINT0, IRQ_CP_MMCIINT1 },
+ .periphid = 0,
+};
+
+static struct amba_device aaci_device = {
+ .dev = {
+ .bus_id = "mb:1d",
+ },
+ .res = {
+ .start = INTCP_PA_AACI_BASE,
+ .end = INTCP_PA_AACI_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = { IRQ_CP_AACIINT, NO_IRQ },
+ .periphid = 0,
+};
+
+
+/*
+ * CLCD support
+ */
+static struct clcd_panel vga = {
+ .mode = {
+ .name = "VGA",
+ .refresh = 60,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = 39721,
+ .left_margin = 40,
+ .right_margin = 24,
+ .upper_margin = 32,
+ .lower_margin = 11,
+ .hsync_len = 96,
+ .vsync_len = 2,
+ .sync = 0,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+ .width = -1,
+ .height = -1,
+ .tim2 = TIM2_BCD | TIM2_IPC,
+ .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
+ .bpp = 16,
+ .grayscale = 0,
+};
+
+/*
+ * Ensure VGA is selected.
+ */
+static void cp_clcd_enable(struct clcd_fb *fb)
+{
+ cm_control(CM_CTRL_LCDMUXSEL_MASK, CM_CTRL_LCDMUXSEL_VGA);
+}
+
+static unsigned long framesize = SZ_1M;
+
+static int cp_clcd_setup(struct clcd_fb *fb)
+{
+ dma_addr_t dma;
+
+ fb->panel = &vga;
+
+ 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 framebuffer\n");
+ return -ENOMEM;
+ }
+
+ fb->fb.fix.smem_start = dma;
+ fb->fb.fix.smem_len = framesize;
+
+ return 0;
+}
+
+static int cp_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 cp_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 clcd_data = {
+ .name = "Integrator/CP",
+ .check = clcdfb_check,
+ .decode = clcdfb_decode,
+ .enable = cp_clcd_enable,
+ .setup = cp_clcd_setup,
+ .mmap = cp_clcd_mmap,
+ .remove = cp_clcd_remove,
+};
+
+static struct amba_device clcd_device = {
+ .dev = {
+ .bus_id = "mb:c0",
+ .coherent_dma_mask = ~0,
+ .platform_data = &clcd_data,
+ },
+ .res = {
+ .start = INTCP_PA_CLCD_BASE,
+ .end = INTCP_PA_CLCD_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .dma_mask = ~0,
+ .irq = { IRQ_CP_CLCDCINT, NO_IRQ },
+ .periphid = 0,
+};
+
+static struct amba_device *amba_devs[] __initdata = {
+ &mmc_device,
+ &aaci_device,
+ &clcd_device,
+};
+
+static void __init intcp_init(void)
+{
+ int i;
+
+ clk_register(&cp_clcd_clk);
+ clk_register(&cp_mmci_clk);
+
+ platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs));
+
+ for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+ struct amba_device *d = amba_devs[i];
+ amba_device_register(d, &iomem_resource);
+ }
+}
+
+#define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable */
+
+static void __init intcp_timer_init(void)
+{
+ integrator_time_init(1000000 / HZ, TIMER_CTRL_IE);
+}
+
+static struct sys_timer cp_timer = {
+ .init = intcp_timer_init,
+ .offset = integrator_gettimeoffset,
+};
+
+MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
+ MAINTAINER("ARM Ltd/Deep Blue Solutions Ltd")
+ BOOT_MEM(0x00000000, 0x16000000, 0xf1600000)
+ BOOT_PARAMS(0x00000100)
+ MAPIO(intcp_map_io)
+ INITIRQ(intcp_init_irq)
+ .timer = &cp_timer,
+ INIT_MACHINE(intcp_init)
+MACHINE_END