2 * linux/arch/arm/mach-integrator/impd1.c
4 * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * This file provides the core support for the IM-PD1 module.
12 * Module / boot parameters.
13 * lmid=n impd1.lmid=n - set the logic module position in stack to 'n'
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/device.h>
19 #include <linux/errno.h>
21 #include <linux/amba/bus.h>
22 #include <linux/amba/clcd.h>
25 #include <asm/clkdev.h>
26 #include <mach/clkdev.h>
27 #include <asm/hardware/icst525.h>
29 #include <mach/impd1.h>
30 #include <asm/sizes.h>
34 module_param_named(lmid, module_id, int, 0444);
35 MODULE_PARM_DESC(lmid, "logic module stack position");
40 struct clk_lookup *clks[3];
43 static const struct icst_params impd1_vco_params = {
44 .ref = 24000000, /* 24 MHz */
45 .vco_max = ICST525_VCO_MAX_3V,
46 .vco_min = ICST525_VCO_MIN,
51 .s2div = icst525_s2div,
52 .idx2s = icst525_idx2s,
55 static void impd1_setvco(struct clk *clk, struct icst_vco vco)
57 struct impd1_module *impd1 = clk->data;
58 int vconr = clk - impd1->vcos;
61 val = vco.v | (vco.r << 9) | (vco.s << 16);
63 writel(0xa05f, impd1->base + IMPD1_LOCK);
66 writel(val, impd1->base + IMPD1_OSC1);
69 writel(val, impd1->base + IMPD1_OSC2);
72 writel(0, impd1->base + IMPD1_LOCK);
76 vco.r = (val >> 9) & 0x7f;
77 vco.s = (val >> 16) & 7;
79 pr_debug("IM-PD1: VCO%d clock is %ld Hz\n",
80 vconr, icst525_hz(&impd1_vco_params, vco));
84 void impd1_tweak_control(struct device *dev, u32 mask, u32 val)
86 struct impd1_module *impd1 = dev_get_drvdata(dev);
90 cur = readl(impd1->base + IMPD1_CTRL) & ~mask;
91 writel(cur | val, impd1->base + IMPD1_CTRL);
94 EXPORT_SYMBOL(impd1_tweak_control);
99 #define PANEL PROSPECTOR
107 #define PANELTYPE vga
108 static struct clcd_panel vga = {
122 .vmode = FB_VMODE_NONINTERLACED,
126 .tim2 = TIM2_BCD | TIM2_IPC,
127 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
128 .connector = IMPD1_CTRL_DISP_VGA,
134 #define PANELTYPE svga
135 static struct clcd_panel svga = {
149 .vmode = FB_VMODE_NONINTERLACED,
154 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
155 .connector = IMPD1_CTRL_DISP_VGA,
160 #elif PANEL == PROSPECTOR
161 #define PANELTYPE prospector
162 static struct clcd_panel prospector = {
164 .name = "PROSPECTOR",
175 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
176 .vmode = FB_VMODE_NONINTERLACED,
181 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
183 .connector = IMPD1_CTRL_DISP_LCD,
188 #elif PANEL == LTM10C209
189 #define PANELTYPE ltm10c209
193 static struct clcd_panel ltm10c209 = {
206 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
207 .vmode = FB_VMODE_NONINTERLACED,
212 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
214 .connector = IMPD1_CTRL_DISP_LCD,
221 * Disable all display connectors on the interface module.
223 static void impd1fb_clcd_disable(struct clcd_fb *fb)
225 impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, 0);
229 * Enable the relevant connector on the interface module.
231 static void impd1fb_clcd_enable(struct clcd_fb *fb)
233 impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK,
234 fb->panel->connector | IMPD1_CTRL_DISP_ENABLE);
237 static int impd1fb_clcd_setup(struct clcd_fb *fb)
239 unsigned long framebase = fb->dev->res.start + 0x01000000;
240 unsigned long framesize = SZ_1M;
243 fb->panel = &PANELTYPE;
245 if (!request_mem_region(framebase, framesize, "clcd framebuffer")) {
246 printk(KERN_ERR "IM-PD1: unable to reserve framebuffer\n");
250 fb->fb.screen_base = ioremap(framebase, framesize);
251 if (!fb->fb.screen_base) {
252 printk(KERN_ERR "IM-PD1: unable to map framebuffer\n");
257 fb->fb.fix.smem_start = framebase;
258 fb->fb.fix.smem_len = framesize;
263 release_mem_region(framebase, framesize);
267 static int impd1fb_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
269 unsigned long start, size;
271 start = vma->vm_pgoff + (fb->fb.fix.smem_start >> PAGE_SHIFT);
272 size = vma->vm_end - vma->vm_start;
274 return remap_pfn_range(vma, vma->vm_start, start, size,
278 static void impd1fb_clcd_remove(struct clcd_fb *fb)
280 iounmap(fb->fb.screen_base);
281 release_mem_region(fb->fb.fix.smem_start, fb->fb.fix.smem_len);
284 static struct clcd_board impd1_clcd_data = {
286 .check = clcdfb_check,
287 .decode = clcdfb_decode,
288 .disable = impd1fb_clcd_disable,
289 .enable = impd1fb_clcd_enable,
290 .setup = impd1fb_clcd_setup,
291 .mmap = impd1fb_clcd_mmap,
292 .remove = impd1fb_clcd_remove,
295 struct impd1_device {
296 unsigned long offset;
302 static struct impd1_device impd1_devs[] = {
304 .offset = 0x03000000,
307 .offset = 0x00100000,
311 .offset = 0x00200000,
315 .offset = 0x00300000,
319 .offset = 0x00400000,
323 .offset = 0x00500000,
327 .offset = 0x00600000,
331 .offset = 0x00700000,
335 .offset = 0x00800000,
339 .offset = 0x01000000,
342 .platform_data = &impd1_clcd_data,
346 static struct clk fixed_14745600 = {
350 static int impd1_probe(struct lm_device *dev)
352 struct impd1_module *impd1;
355 if (dev->id != module_id)
358 if (!request_mem_region(dev->resource.start, SZ_4K, "LM registers"))
361 impd1 = kzalloc(sizeof(struct impd1_module), GFP_KERNEL);
367 impd1->base = ioremap(dev->resource.start, SZ_4K);
373 lm_set_drvdata(dev, impd1);
375 printk("IM-PD1 found at 0x%08lx\n",
376 (unsigned long)dev->resource.start);
378 for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) {
379 impd1->vcos[i].owner = THIS_MODULE,
380 impd1->vcos[i].params = &impd1_vco_params,
381 impd1->vcos[i].data = impd1,
382 impd1->vcos[i].setvco = impd1_setvco;
385 impd1->clks[0] = clkdev_alloc(&impd1->vcos[0], NULL, "lm%x:01000",
387 impd1->clks[1] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00100",
389 impd1->clks[2] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00200",
391 for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
392 clkdev_add(impd1->clks[i]);
394 for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) {
395 struct impd1_device *idev = impd1_devs + i;
396 struct amba_device *d;
397 unsigned long pc_base;
399 pc_base = dev->resource.start + idev->offset;
401 d = kzalloc(sizeof(struct amba_device), GFP_KERNEL);
405 dev_set_name(&d->dev, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
406 d->dev.parent = &dev->dev;
407 d->res.start = dev->resource.start + idev->offset;
408 d->res.end = d->res.start + SZ_4K - 1;
409 d->res.flags = IORESOURCE_MEM;
410 d->irq[0] = dev->irq;
411 d->irq[1] = dev->irq;
412 d->periphid = idev->id;
413 d->dev.platform_data = idev->platform_data;
415 ret = amba_device_register(d, &dev->resource);
417 dev_err(&d->dev, "unable to register device: %d\n", ret);
425 if (impd1 && impd1->base)
426 iounmap(impd1->base);
429 release_mem_region(dev->resource.start, SZ_4K);
433 static int impd1_remove_one(struct device *dev, void *data)
435 device_unregister(dev);
439 static void impd1_remove(struct lm_device *dev)
441 struct impd1_module *impd1 = lm_get_drvdata(dev);
444 device_for_each_child(&dev->dev, NULL, impd1_remove_one);
446 for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
447 clkdev_drop(impd1->clks[i]);
449 lm_set_drvdata(dev, NULL);
451 iounmap(impd1->base);
453 release_mem_region(dev->resource.start, SZ_4K);
456 static struct lm_driver impd1_driver = {
460 .probe = impd1_probe,
461 .remove = impd1_remove,
464 static int __init impd1_init(void)
466 return lm_driver_register(&impd1_driver);
469 static void __exit impd1_exit(void)
471 lm_driver_unregister(&impd1_driver);
474 module_init(impd1_init);
475 module_exit(impd1_exit);
477 MODULE_LICENSE("GPL");
478 MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver");
479 MODULE_AUTHOR("Deep Blue Solutions Ltd");