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-rw-r--r--arch/arm/mach-integrator/impd1.c478
1 files changed, 478 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
new file mode 100644
index 000000000..38b0da300
--- /dev/null
+++ b/arch/arm/mach-integrator/impd1.c
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+/*
+ * linux/arch/arm/mach-integrator/impd1.c
+ *
+ * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This file provides the core support for the IM-PD1 module.
+ *
+ * Module / boot parameters.
+ * lmid=n impd1.lmid=n - set the logic module position in stack to 'n'
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/amba/mmci.h>
+#include <linux/amba/pl061.h>
+#include <linux/io.h>
+#include <linux/platform_data/clk-integrator.h>
+#include <linux/slab.h>
+#include <linux/irqchip/arm-vic.h>
+#include <linux/gpio/machine.h>
+
+#include <asm/sizes.h>
+#include "lm.h"
+#include "impd1.h"
+
+static int module_id;
+
+module_param_named(lmid, module_id, int, 0444);
+MODULE_PARM_DESC(lmid, "logic module stack position");
+
+struct impd1_module {
+ void __iomem *base;
+ void __iomem *vic_base;
+};
+
+void impd1_tweak_control(struct device *dev, u32 mask, u32 val)
+{
+ struct impd1_module *impd1 = dev_get_drvdata(dev);
+ u32 cur;
+
+ val &= mask;
+ cur = readl(impd1->base + IMPD1_CTRL) & ~mask;
+ writel(cur | val, impd1->base + IMPD1_CTRL);
+}
+
+EXPORT_SYMBOL(impd1_tweak_control);
+
+/*
+ * MMC support
+ */
+static struct mmci_platform_data mmc_data = {
+ .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
+};
+
+/*
+ * CLCD support
+ */
+#define PANEL PROSPECTOR
+
+#define LTM10C209 1
+#define PROSPECTOR 2
+#define SVGA 3
+#define VGA 4
+
+#if PANEL == VGA
+#define PANELTYPE vga
+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),
+ .caps = CLCD_CAP_5551,
+ .connector = IMPD1_CTRL_DISP_VGA,
+ .bpp = 16,
+ .grayscale = 0,
+};
+
+#elif PANEL == SVGA
+#define PANELTYPE svga
+static struct clcd_panel svga = {
+ .mode = {
+ .name = "SVGA",
+ .refresh = 0,
+ .xres = 800,
+ .yres = 600,
+ .pixclock = 27778,
+ .left_margin = 20,
+ .right_margin = 20,
+ .upper_margin = 5,
+ .lower_margin = 5,
+ .hsync_len = 164,
+ .vsync_len = 62,
+ .sync = 0,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+ .width = -1,
+ .height = -1,
+ .tim2 = TIM2_BCD,
+ .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
+ .connector = IMPD1_CTRL_DISP_VGA,
+ .caps = CLCD_CAP_5551,
+ .bpp = 16,
+ .grayscale = 0,
+};
+
+#elif PANEL == PROSPECTOR
+#define PANELTYPE prospector
+static struct clcd_panel prospector = {
+ .mode = {
+ .name = "PROSPECTOR",
+ .refresh = 0,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = 40000,
+ .left_margin = 33,
+ .right_margin = 64,
+ .upper_margin = 36,
+ .lower_margin = 7,
+ .hsync_len = 64,
+ .vsync_len = 25,
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+ .width = -1,
+ .height = -1,
+ .tim2 = TIM2_BCD,
+ .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
+ .caps = CLCD_CAP_5551,
+ .fixedtimings = 1,
+ .connector = IMPD1_CTRL_DISP_LCD,
+ .bpp = 16,
+ .grayscale = 0,
+};
+
+#elif PANEL == LTM10C209
+#define PANELTYPE ltm10c209
+/*
+ * Untested.
+ */
+static struct clcd_panel ltm10c209 = {
+ .mode = {
+ .name = "LTM10C209",
+ .refresh = 0,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = 40000,
+ .left_margin = 20,
+ .right_margin = 20,
+ .upper_margin = 19,
+ .lower_margin = 19,
+ .hsync_len = 20,
+ .vsync_len = 10,
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED,
+ },
+ .width = -1,
+ .height = -1,
+ .tim2 = TIM2_BCD,
+ .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
+ .caps = CLCD_CAP_5551,
+ .fixedtimings = 1,
+ .connector = IMPD1_CTRL_DISP_LCD,
+ .bpp = 16,
+ .grayscale = 0,
+};
+#endif
+
+/*
+ * Disable all display connectors on the interface module.
+ */
+static void impd1fb_clcd_disable(struct clcd_fb *fb)
+{
+ impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, 0);
+}
+
+/*
+ * Enable the relevant connector on the interface module.
+ */
+static void impd1fb_clcd_enable(struct clcd_fb *fb)
+{
+ impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK,
+ fb->panel->connector | IMPD1_CTRL_DISP_ENABLE);
+}
+
+static int impd1fb_clcd_setup(struct clcd_fb *fb)
+{
+ unsigned long framebase = fb->dev->res.start + 0x01000000;
+ unsigned long framesize = SZ_1M;
+ int ret = 0;
+
+ fb->panel = &PANELTYPE;
+
+ if (!request_mem_region(framebase, framesize, "clcd framebuffer")) {
+ printk(KERN_ERR "IM-PD1: unable to reserve framebuffer\n");
+ return -EBUSY;
+ }
+
+ fb->fb.screen_base = ioremap(framebase, framesize);
+ if (!fb->fb.screen_base) {
+ printk(KERN_ERR "IM-PD1: unable to map framebuffer\n");
+ ret = -ENOMEM;
+ goto free_buffer;
+ }
+
+ fb->fb.fix.smem_start = framebase;
+ fb->fb.fix.smem_len = framesize;
+
+ return 0;
+
+ free_buffer:
+ release_mem_region(framebase, framesize);
+ return ret;
+}
+
+static int impd1fb_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
+{
+ unsigned long start, size;
+
+ start = vma->vm_pgoff + (fb->fb.fix.smem_start >> PAGE_SHIFT);
+ size = vma->vm_end - vma->vm_start;
+
+ return remap_pfn_range(vma, vma->vm_start, start, size,
+ vma->vm_page_prot);
+}
+
+static void impd1fb_clcd_remove(struct clcd_fb *fb)
+{
+ iounmap(fb->fb.screen_base);
+ release_mem_region(fb->fb.fix.smem_start, fb->fb.fix.smem_len);
+}
+
+static struct clcd_board impd1_clcd_data = {
+ .name = "IM-PD/1",
+ .caps = CLCD_CAP_5551 | CLCD_CAP_888,
+ .check = clcdfb_check,
+ .decode = clcdfb_decode,
+ .disable = impd1fb_clcd_disable,
+ .enable = impd1fb_clcd_enable,
+ .setup = impd1fb_clcd_setup,
+ .mmap = impd1fb_clcd_mmap,
+ .remove = impd1fb_clcd_remove,
+};
+
+struct impd1_device {
+ unsigned long offset;
+ unsigned int irq[2];
+ unsigned int id;
+ void *platform_data;
+};
+
+static struct impd1_device impd1_devs[] = {
+ {
+ .offset = 0x00100000,
+ .irq = { 1 },
+ .id = 0x00141011,
+ }, {
+ .offset = 0x00200000,
+ .irq = { 2 },
+ .id = 0x00141011,
+ }, {
+ .offset = 0x00300000,
+ .irq = { 3 },
+ .id = 0x00041022,
+ }, {
+ .offset = 0x00400000,
+ .irq = { 4 },
+ .id = 0x00041061,
+ }, {
+ .offset = 0x00500000,
+ .irq = { 5 },
+ .id = 0x00041061,
+ }, {
+ .offset = 0x00600000,
+ .irq = { 6 },
+ .id = 0x00041130,
+ }, {
+ .offset = 0x00700000,
+ .irq = { 7, 8 },
+ .id = 0x00041181,
+ .platform_data = &mmc_data,
+ }, {
+ .offset = 0x00800000,
+ .irq = { 9 },
+ .id = 0x00041041,
+ }, {
+ .offset = 0x01000000,
+ .irq = { 11 },
+ .id = 0x00041110,
+ .platform_data = &impd1_clcd_data,
+ }
+};
+
+/*
+ * Valid IRQs: 0 thru 9 and 11, 10 unused.
+ */
+#define IMPD1_VALID_IRQS 0x00000bffU
+
+/*
+ * As this module is bool, it is OK to have this as __init_refok() - no
+ * probe calls will be done after the initial system bootup, as devices
+ * are discovered as part of the machine startup.
+ */
+static int __init_refok impd1_probe(struct lm_device *dev)
+{
+ struct impd1_module *impd1;
+ int irq_base;
+ int i;
+
+ if (dev->id != module_id)
+ return -EINVAL;
+
+ if (!devm_request_mem_region(&dev->dev, dev->resource.start,
+ SZ_4K, "LM registers"))
+ return -EBUSY;
+
+ impd1 = devm_kzalloc(&dev->dev, sizeof(struct impd1_module),
+ GFP_KERNEL);
+ if (!impd1)
+ return -ENOMEM;
+
+ impd1->base = devm_ioremap(&dev->dev, dev->resource.start, SZ_4K);
+ if (!impd1->base)
+ return -ENOMEM;
+
+ integrator_impd1_clk_init(impd1->base, dev->id);
+
+ if (!devm_request_mem_region(&dev->dev,
+ dev->resource.start + 0x03000000,
+ SZ_4K, "VIC"))
+ return -EBUSY;
+
+ impd1->vic_base = devm_ioremap(&dev->dev,
+ dev->resource.start + 0x03000000,
+ SZ_4K);
+ if (!impd1->vic_base)
+ return -ENOMEM;
+
+ irq_base = vic_init_cascaded(impd1->vic_base, dev->irq,
+ IMPD1_VALID_IRQS, 0);
+
+ lm_set_drvdata(dev, impd1);
+
+ dev_info(&dev->dev, "IM-PD1 found at 0x%08lx\n",
+ (unsigned long)dev->resource.start);
+
+ for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) {
+ struct impd1_device *idev = impd1_devs + i;
+ struct amba_device *d;
+ unsigned long pc_base;
+ char devname[32];
+ int irq1 = idev->irq[0];
+ int irq2 = idev->irq[1];
+
+ /* Translate IRQs to IM-PD1 local numberspace */
+ if (irq1)
+ irq1 += irq_base;
+ if (irq2)
+ irq2 += irq_base;
+
+ pc_base = dev->resource.start + idev->offset;
+ snprintf(devname, 32, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
+
+ /* Add GPIO descriptor lookup table for the PL061 block */
+ if (idev->offset == 0x00400000) {
+ struct gpiod_lookup_table *lookup;
+ char *chipname;
+ char *mmciname;
+
+ lookup = devm_kzalloc(&dev->dev,
+ sizeof(*lookup) + 3 * sizeof(struct gpiod_lookup),
+ GFP_KERNEL);
+ chipname = devm_kstrdup(&dev->dev, devname, GFP_KERNEL);
+ mmciname = kasprintf(GFP_KERNEL, "lm%x:00700", dev->id);
+ lookup->dev_id = mmciname;
+ /*
+ * Offsets on GPIO block 1:
+ * 3 = MMC WP (write protect)
+ * 4 = MMC CD (card detect)
+ *
+ * Offsets on GPIO block 2:
+ * 0 = Up key
+ * 1 = Down key
+ * 2 = Left key
+ * 3 = Right key
+ * 4 = Key lower left
+ * 5 = Key lower right
+ */
+ /* We need the two MMCI GPIO entries */
+ lookup->table[0].chip_label = chipname;
+ lookup->table[0].chip_hwnum = 3;
+ lookup->table[0].con_id = "wp";
+ lookup->table[1].chip_label = chipname;
+ lookup->table[1].chip_hwnum = 4;
+ lookup->table[1].con_id = "cd";
+ lookup->table[1].flags = GPIO_ACTIVE_LOW;
+ gpiod_add_lookup_table(lookup);
+ }
+
+ d = amba_ahb_device_add_res(&dev->dev, devname, pc_base, SZ_4K,
+ irq1, irq2,
+ idev->platform_data, idev->id,
+ &dev->resource);
+ if (IS_ERR(d)) {
+ dev_err(&dev->dev, "unable to register device: %ld\n", PTR_ERR(d));
+ continue;
+ }
+ }
+
+ return 0;
+}
+
+static int impd1_remove_one(struct device *dev, void *data)
+{
+ device_unregister(dev);
+ return 0;
+}
+
+static void impd1_remove(struct lm_device *dev)
+{
+ device_for_each_child(&dev->dev, NULL, impd1_remove_one);
+ integrator_impd1_clk_exit(dev->id);
+
+ lm_set_drvdata(dev, NULL);
+}
+
+static struct lm_driver impd1_driver = {
+ .drv = {
+ .name = "impd1",
+ /*
+ * As we're dropping the probe() function, suppress driver
+ * binding from sysfs.
+ */
+ .suppress_bind_attrs = true,
+ },
+ .probe = impd1_probe,
+ .remove = impd1_remove,
+};
+
+static int __init impd1_init(void)
+{
+ return lm_driver_register(&impd1_driver);
+}
+
+static void __exit impd1_exit(void)
+{
+ lm_driver_unregister(&impd1_driver);
+}
+
+module_init(impd1_init);
+module_exit(impd1_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver");
+MODULE_AUTHOR("Deep Blue Solutions Ltd");
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