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>
24 #include <linux/slab.h>
25 #include <linux/clkdev.h>
27 #include <asm/hardware/icst.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 u32 val = vco.v | (vco.r << 9) | (vco.s << 16);
60 writel(0xa05f, impd1->base + IMPD1_LOCK);
61 writel(val, clk->vcoreg);
62 writel(0, impd1->base + IMPD1_LOCK);
66 vco.r = (val >> 9) & 0x7f;
67 vco.s = (val >> 16) & 7;
69 pr_debug("IM-PD1: VCO%d clock is %ld Hz\n",
70 vconr, icst525_hz(&impd1_vco_params, vco));
74 static const struct clk_ops impd1_clk_ops = {
75 .round = icst_clk_round,
77 .setvco = impd1_setvco,
80 void impd1_tweak_control(struct device *dev, u32 mask, u32 val)
82 struct impd1_module *impd1 = dev_get_drvdata(dev);
86 cur = readl(impd1->base + IMPD1_CTRL) & ~mask;
87 writel(cur | val, impd1->base + IMPD1_CTRL);
90 EXPORT_SYMBOL(impd1_tweak_control);
95 #define PANEL PROSPECTOR
103 #define PANELTYPE vga
104 static struct clcd_panel vga = {
118 .vmode = FB_VMODE_NONINTERLACED,
122 .tim2 = TIM2_BCD | TIM2_IPC,
123 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
124 .caps = CLCD_CAP_5551,
125 .connector = IMPD1_CTRL_DISP_VGA,
131 #define PANELTYPE svga
132 static struct clcd_panel svga = {
146 .vmode = FB_VMODE_NONINTERLACED,
151 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
152 .connector = IMPD1_CTRL_DISP_VGA,
153 .caps = CLCD_CAP_5551,
158 #elif PANEL == PROSPECTOR
159 #define PANELTYPE prospector
160 static struct clcd_panel prospector = {
162 .name = "PROSPECTOR",
173 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
174 .vmode = FB_VMODE_NONINTERLACED,
179 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
180 .caps = CLCD_CAP_5551,
182 .connector = IMPD1_CTRL_DISP_LCD,
187 #elif PANEL == LTM10C209
188 #define PANELTYPE ltm10c209
192 static struct clcd_panel ltm10c209 = {
205 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
206 .vmode = FB_VMODE_NONINTERLACED,
211 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
212 .caps = CLCD_CAP_5551,
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 .caps = CLCD_CAP_5551 | CLCD_CAP_888,
287 .check = clcdfb_check,
288 .decode = clcdfb_decode,
289 .disable = impd1fb_clcd_disable,
290 .enable = impd1fb_clcd_enable,
291 .setup = impd1fb_clcd_setup,
292 .mmap = impd1fb_clcd_mmap,
293 .remove = impd1fb_clcd_remove,
296 struct impd1_device {
297 unsigned long offset;
303 static struct impd1_device impd1_devs[] = {
305 .offset = 0x03000000,
308 .offset = 0x00100000,
312 .offset = 0x00200000,
316 .offset = 0x00300000,
320 .offset = 0x00400000,
324 .offset = 0x00500000,
328 .offset = 0x00600000,
332 .offset = 0x00700000,
336 .offset = 0x00800000,
340 .offset = 0x01000000,
343 .platform_data = &impd1_clcd_data,
347 static struct clk fixed_14745600 = {
351 static int impd1_probe(struct lm_device *dev)
353 struct impd1_module *impd1;
356 if (dev->id != module_id)
359 if (!request_mem_region(dev->resource.start, SZ_4K, "LM registers"))
362 impd1 = kzalloc(sizeof(struct impd1_module), GFP_KERNEL);
368 impd1->base = ioremap(dev->resource.start, SZ_4K);
374 lm_set_drvdata(dev, impd1);
376 printk("IM-PD1 found at 0x%08lx\n",
377 (unsigned long)dev->resource.start);
379 for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) {
380 impd1->vcos[i].ops = &impd1_clk_ops,
381 impd1->vcos[i].owner = THIS_MODULE,
382 impd1->vcos[i].params = &impd1_vco_params,
383 impd1->vcos[i].data = impd1;
385 impd1->vcos[0].vcoreg = impd1->base + IMPD1_OSC1;
386 impd1->vcos[1].vcoreg = impd1->base + IMPD1_OSC2;
388 impd1->clks[0] = clkdev_alloc(&impd1->vcos[0], NULL, "lm%x:01000",
390 impd1->clks[1] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00100",
392 impd1->clks[2] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00200",
394 for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
395 clkdev_add(impd1->clks[i]);
397 for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) {
398 struct impd1_device *idev = impd1_devs + i;
399 struct amba_device *d;
400 unsigned long pc_base;
403 pc_base = dev->resource.start + idev->offset;
404 snprintf(devname, 32, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
405 d = amba_ahb_device_add(&dev->dev, devname, pc_base, SZ_4K,
407 idev->platform_data, idev->id);
409 dev_err(&dev->dev, "unable to register device: %ld\n", PTR_ERR(d));
417 if (impd1 && impd1->base)
418 iounmap(impd1->base);
421 release_mem_region(dev->resource.start, SZ_4K);
425 static int impd1_remove_one(struct device *dev, void *data)
427 device_unregister(dev);
431 static void impd1_remove(struct lm_device *dev)
433 struct impd1_module *impd1 = lm_get_drvdata(dev);
436 device_for_each_child(&dev->dev, NULL, impd1_remove_one);
438 for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
439 clkdev_drop(impd1->clks[i]);
441 lm_set_drvdata(dev, NULL);
443 iounmap(impd1->base);
445 release_mem_region(dev->resource.start, SZ_4K);
448 static struct lm_driver impd1_driver = {
452 .probe = impd1_probe,
453 .remove = impd1_remove,
456 static int __init impd1_init(void)
458 return lm_driver_register(&impd1_driver);
461 static void __exit impd1_exit(void)
463 lm_driver_unregister(&impd1_driver);
466 module_init(impd1_init);
467 module_exit(impd1_exit);
469 MODULE_LICENSE("GPL");
470 MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver");
471 MODULE_AUTHOR("Deep Blue Solutions Ltd");