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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-integrator/impd1.c | |
3 | * | |
4 | * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved. | |
5 | * | |
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. | |
9 | * | |
10 | * This file provides the core support for the IM-PD1 module. | |
11 | * | |
12 | * Module / boot parameters. | |
13 | * lmid=n impd1.lmid=n - set the logic module position in stack to 'n' | |
14 | */ | |
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> | |
20 | #include <linux/mm.h> | |
a62c80e5 RK |
21 | #include <linux/amba/bus.h> |
22 | #include <linux/amba/clcd.h> | |
1da177e4 LT |
23 | |
24 | #include <asm/io.h> | |
25 | #include <asm/hardware/icst525.h> | |
a09e64fb RK |
26 | #include <mach/lm.h> |
27 | #include <mach/impd1.h> | |
1da177e4 LT |
28 | #include <asm/sizes.h> |
29 | ||
30 | #include "clock.h" | |
31 | ||
32 | static int module_id; | |
33 | ||
34 | module_param_named(lmid, module_id, int, 0444); | |
35 | MODULE_PARM_DESC(lmid, "logic module stack position"); | |
36 | ||
37 | struct impd1_module { | |
38 | void __iomem *base; | |
39 | struct clk vcos[2]; | |
40 | }; | |
41 | ||
42 | static const struct icst525_params impd1_vco_params = { | |
43 | .ref = 24000, /* 24 MHz */ | |
44 | .vco_max = 200000, /* 200 MHz */ | |
45 | .vd_min = 12, | |
46 | .vd_max = 519, | |
47 | .rd_min = 3, | |
48 | .rd_max = 120, | |
49 | }; | |
50 | ||
51 | static void impd1_setvco(struct clk *clk, struct icst525_vco vco) | |
52 | { | |
53 | struct impd1_module *impd1 = clk->data; | |
54 | int vconr = clk - impd1->vcos; | |
55 | u32 val; | |
56 | ||
57 | val = vco.v | (vco.r << 9) | (vco.s << 16); | |
58 | ||
59 | writel(0xa05f, impd1->base + IMPD1_LOCK); | |
60 | switch (vconr) { | |
61 | case 0: | |
62 | writel(val, impd1->base + IMPD1_OSC1); | |
63 | break; | |
64 | case 1: | |
65 | writel(val, impd1->base + IMPD1_OSC2); | |
66 | break; | |
67 | } | |
68 | writel(0, impd1->base + IMPD1_LOCK); | |
69 | ||
d1856637 | 70 | #ifdef DEBUG |
1da177e4 LT |
71 | vco.v = val & 0x1ff; |
72 | vco.r = (val >> 9) & 0x7f; | |
73 | vco.s = (val >> 16) & 7; | |
74 | ||
75 | pr_debug("IM-PD1: VCO%d clock is %ld kHz\n", | |
76 | vconr, icst525_khz(&impd1_vco_params, vco)); | |
77 | #endif | |
78 | } | |
79 | ||
80 | void impd1_tweak_control(struct device *dev, u32 mask, u32 val) | |
81 | { | |
82 | struct impd1_module *impd1 = dev_get_drvdata(dev); | |
83 | u32 cur; | |
84 | ||
85 | val &= mask; | |
86 | cur = readl(impd1->base + IMPD1_CTRL) & ~mask; | |
87 | writel(cur | val, impd1->base + IMPD1_CTRL); | |
88 | } | |
89 | ||
90 | EXPORT_SYMBOL(impd1_tweak_control); | |
91 | ||
92 | /* | |
93 | * CLCD support | |
94 | */ | |
95 | #define PANEL PROSPECTOR | |
96 | ||
97 | #define LTM10C209 1 | |
98 | #define PROSPECTOR 2 | |
99 | #define SVGA 3 | |
100 | #define VGA 4 | |
101 | ||
102 | #if PANEL == VGA | |
103 | #define PANELTYPE vga | |
104 | static struct clcd_panel vga = { | |
105 | .mode = { | |
106 | .name = "VGA", | |
107 | .refresh = 60, | |
108 | .xres = 640, | |
109 | .yres = 480, | |
110 | .pixclock = 39721, | |
111 | .left_margin = 40, | |
112 | .right_margin = 24, | |
113 | .upper_margin = 32, | |
114 | .lower_margin = 11, | |
115 | .hsync_len = 96, | |
116 | .vsync_len = 2, | |
117 | .sync = 0, | |
118 | .vmode = FB_VMODE_NONINTERLACED, | |
119 | }, | |
120 | .width = -1, | |
121 | .height = -1, | |
122 | .tim2 = TIM2_BCD | TIM2_IPC, | |
123 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
124 | .connector = IMPD1_CTRL_DISP_VGA, | |
125 | .bpp = 16, | |
126 | .grayscale = 0, | |
127 | }; | |
128 | ||
129 | #elif PANEL == SVGA | |
130 | #define PANELTYPE svga | |
131 | static struct clcd_panel svga = { | |
132 | .mode = { | |
133 | .name = "SVGA", | |
134 | .refresh = 0, | |
135 | .xres = 800, | |
136 | .yres = 600, | |
137 | .pixclock = 27778, | |
138 | .left_margin = 20, | |
139 | .right_margin = 20, | |
140 | .upper_margin = 5, | |
141 | .lower_margin = 5, | |
142 | .hsync_len = 164, | |
143 | .vsync_len = 62, | |
144 | .sync = 0, | |
145 | .vmode = FB_VMODE_NONINTERLACED, | |
146 | }, | |
147 | .width = -1, | |
148 | .height = -1, | |
149 | .tim2 = TIM2_BCD, | |
150 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
151 | .connector = IMPD1_CTRL_DISP_VGA, | |
152 | .bpp = 16, | |
153 | .grayscale = 0, | |
154 | }; | |
155 | ||
156 | #elif PANEL == PROSPECTOR | |
157 | #define PANELTYPE prospector | |
158 | static struct clcd_panel prospector = { | |
159 | .mode = { | |
160 | .name = "PROSPECTOR", | |
161 | .refresh = 0, | |
162 | .xres = 640, | |
163 | .yres = 480, | |
164 | .pixclock = 40000, | |
165 | .left_margin = 33, | |
166 | .right_margin = 64, | |
167 | .upper_margin = 36, | |
168 | .lower_margin = 7, | |
169 | .hsync_len = 64, | |
170 | .vsync_len = 25, | |
171 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
172 | .vmode = FB_VMODE_NONINTERLACED, | |
173 | }, | |
174 | .width = -1, | |
175 | .height = -1, | |
176 | .tim2 = TIM2_BCD, | |
177 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
178 | .fixedtimings = 1, | |
179 | .connector = IMPD1_CTRL_DISP_LCD, | |
180 | .bpp = 16, | |
181 | .grayscale = 0, | |
182 | }; | |
183 | ||
184 | #elif PANEL == LTM10C209 | |
185 | #define PANELTYPE ltm10c209 | |
186 | /* | |
187 | * Untested. | |
188 | */ | |
189 | static struct clcd_panel ltm10c209 = { | |
190 | .mode = { | |
191 | .name = "LTM10C209", | |
192 | .refresh = 0, | |
193 | .xres = 640, | |
194 | .yres = 480, | |
195 | .pixclock = 40000, | |
196 | .left_margin = 20, | |
197 | .right_margin = 20, | |
198 | .upper_margin = 19, | |
199 | .lower_margin = 19, | |
200 | .hsync_len = 20, | |
201 | .vsync_len = 10, | |
202 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
203 | .vmode = FB_VMODE_NONINTERLACED, | |
204 | }, | |
205 | .width = -1, | |
206 | .height = -1, | |
207 | .tim2 = TIM2_BCD, | |
208 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
209 | .fixedtimings = 1, | |
210 | .connector = IMPD1_CTRL_DISP_LCD, | |
211 | .bpp = 16, | |
212 | .grayscale = 0, | |
213 | }; | |
214 | #endif | |
215 | ||
216 | /* | |
217 | * Disable all display connectors on the interface module. | |
218 | */ | |
219 | static void impd1fb_clcd_disable(struct clcd_fb *fb) | |
220 | { | |
221 | impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, 0); | |
222 | } | |
223 | ||
224 | /* | |
225 | * Enable the relevant connector on the interface module. | |
226 | */ | |
227 | static void impd1fb_clcd_enable(struct clcd_fb *fb) | |
228 | { | |
229 | impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, | |
230 | fb->panel->connector | IMPD1_CTRL_DISP_ENABLE); | |
231 | } | |
232 | ||
233 | static int impd1fb_clcd_setup(struct clcd_fb *fb) | |
234 | { | |
235 | unsigned long framebase = fb->dev->res.start + 0x01000000; | |
236 | unsigned long framesize = SZ_1M; | |
237 | int ret = 0; | |
238 | ||
239 | fb->panel = &PANELTYPE; | |
240 | ||
241 | if (!request_mem_region(framebase, framesize, "clcd framebuffer")) { | |
242 | printk(KERN_ERR "IM-PD1: unable to reserve framebuffer\n"); | |
243 | return -EBUSY; | |
244 | } | |
245 | ||
246 | fb->fb.screen_base = ioremap(framebase, framesize); | |
247 | if (!fb->fb.screen_base) { | |
248 | printk(KERN_ERR "IM-PD1: unable to map framebuffer\n"); | |
249 | ret = -ENOMEM; | |
250 | goto free_buffer; | |
251 | } | |
252 | ||
253 | fb->fb.fix.smem_start = framebase; | |
254 | fb->fb.fix.smem_len = framesize; | |
255 | ||
256 | return 0; | |
257 | ||
258 | free_buffer: | |
259 | release_mem_region(framebase, framesize); | |
260 | return ret; | |
261 | } | |
262 | ||
263 | static int impd1fb_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
264 | { | |
265 | unsigned long start, size; | |
266 | ||
267 | start = vma->vm_pgoff + (fb->fb.fix.smem_start >> PAGE_SHIFT); | |
268 | size = vma->vm_end - vma->vm_start; | |
269 | ||
270 | return remap_pfn_range(vma, vma->vm_start, start, size, | |
271 | vma->vm_page_prot); | |
272 | } | |
273 | ||
274 | static void impd1fb_clcd_remove(struct clcd_fb *fb) | |
275 | { | |
276 | iounmap(fb->fb.screen_base); | |
277 | release_mem_region(fb->fb.fix.smem_start, fb->fb.fix.smem_len); | |
278 | } | |
279 | ||
280 | static struct clcd_board impd1_clcd_data = { | |
281 | .name = "IM-PD/1", | |
282 | .check = clcdfb_check, | |
283 | .decode = clcdfb_decode, | |
284 | .disable = impd1fb_clcd_disable, | |
285 | .enable = impd1fb_clcd_enable, | |
286 | .setup = impd1fb_clcd_setup, | |
287 | .mmap = impd1fb_clcd_mmap, | |
288 | .remove = impd1fb_clcd_remove, | |
289 | }; | |
290 | ||
291 | struct impd1_device { | |
292 | unsigned long offset; | |
293 | unsigned int irq[2]; | |
294 | unsigned int id; | |
295 | void *platform_data; | |
296 | }; | |
297 | ||
298 | static struct impd1_device impd1_devs[] = { | |
299 | { | |
300 | .offset = 0x03000000, | |
301 | .id = 0x00041190, | |
302 | }, { | |
303 | .offset = 0x00100000, | |
304 | .irq = { 1 }, | |
305 | .id = 0x00141011, | |
306 | }, { | |
307 | .offset = 0x00200000, | |
308 | .irq = { 2 }, | |
309 | .id = 0x00141011, | |
310 | }, { | |
311 | .offset = 0x00300000, | |
312 | .irq = { 3 }, | |
313 | .id = 0x00041022, | |
314 | }, { | |
315 | .offset = 0x00400000, | |
316 | .irq = { 4 }, | |
317 | .id = 0x00041061, | |
318 | }, { | |
319 | .offset = 0x00500000, | |
320 | .irq = { 5 }, | |
321 | .id = 0x00041061, | |
322 | }, { | |
323 | .offset = 0x00600000, | |
324 | .irq = { 6 }, | |
325 | .id = 0x00041130, | |
326 | }, { | |
327 | .offset = 0x00700000, | |
328 | .irq = { 7, 8 }, | |
329 | .id = 0x00041181, | |
330 | }, { | |
331 | .offset = 0x00800000, | |
332 | .irq = { 9 }, | |
333 | .id = 0x00041041, | |
334 | }, { | |
335 | .offset = 0x01000000, | |
336 | .irq = { 11 }, | |
337 | .id = 0x00041110, | |
338 | .platform_data = &impd1_clcd_data, | |
339 | } | |
340 | }; | |
341 | ||
342 | static const char *impd1_vconames[2] = { | |
343 | "CLCDCLK", | |
344 | "AUXVCO2", | |
345 | }; | |
346 | ||
347 | static int impd1_probe(struct lm_device *dev) | |
348 | { | |
349 | struct impd1_module *impd1; | |
350 | int i, ret; | |
351 | ||
352 | if (dev->id != module_id) | |
353 | return -EINVAL; | |
354 | ||
355 | if (!request_mem_region(dev->resource.start, SZ_4K, "LM registers")) | |
356 | return -EBUSY; | |
357 | ||
d2a02b93 | 358 | impd1 = kzalloc(sizeof(struct impd1_module), GFP_KERNEL); |
1da177e4 LT |
359 | if (!impd1) { |
360 | ret = -ENOMEM; | |
361 | goto release_lm; | |
362 | } | |
1da177e4 LT |
363 | |
364 | impd1->base = ioremap(dev->resource.start, SZ_4K); | |
365 | if (!impd1->base) { | |
366 | ret = -ENOMEM; | |
367 | goto free_impd1; | |
368 | } | |
369 | ||
370 | lm_set_drvdata(dev, impd1); | |
371 | ||
7c28472a RK |
372 | printk("IM-PD1 found at 0x%08lx\n", |
373 | (unsigned long)dev->resource.start); | |
1da177e4 LT |
374 | |
375 | for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) { | |
376 | impd1->vcos[i].owner = THIS_MODULE, | |
377 | impd1->vcos[i].name = impd1_vconames[i], | |
378 | impd1->vcos[i].params = &impd1_vco_params, | |
379 | impd1->vcos[i].data = impd1, | |
380 | impd1->vcos[i].setvco = impd1_setvco; | |
381 | ||
382 | clk_register(&impd1->vcos[i]); | |
383 | } | |
384 | ||
385 | for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) { | |
386 | struct impd1_device *idev = impd1_devs + i; | |
387 | struct amba_device *d; | |
388 | unsigned long pc_base; | |
389 | ||
390 | pc_base = dev->resource.start + idev->offset; | |
391 | ||
d2a02b93 | 392 | d = kzalloc(sizeof(struct amba_device), GFP_KERNEL); |
1da177e4 LT |
393 | if (!d) |
394 | continue; | |
395 | ||
3f978704 | 396 | dev_set_name(&d->dev, "lm%x:%5.5lx", dev->id, idev->offset >> 12); |
1da177e4 LT |
397 | d->dev.parent = &dev->dev; |
398 | d->res.start = dev->resource.start + idev->offset; | |
399 | d->res.end = d->res.start + SZ_4K - 1; | |
400 | d->res.flags = IORESOURCE_MEM; | |
401 | d->irq[0] = dev->irq; | |
402 | d->irq[1] = dev->irq; | |
403 | d->periphid = idev->id; | |
404 | d->dev.platform_data = idev->platform_data; | |
405 | ||
406 | ret = amba_device_register(d, &dev->resource); | |
407 | if (ret) { | |
fc3a8828 | 408 | dev_err(&d->dev, "unable to register device: %d\n"); |
1da177e4 LT |
409 | kfree(d); |
410 | } | |
411 | } | |
412 | ||
413 | return 0; | |
414 | ||
415 | free_impd1: | |
416 | if (impd1 && impd1->base) | |
417 | iounmap(impd1->base); | |
b2325fe1 | 418 | kfree(impd1); |
1da177e4 LT |
419 | release_lm: |
420 | release_mem_region(dev->resource.start, SZ_4K); | |
421 | return ret; | |
422 | } | |
423 | ||
d1856637 RK |
424 | static int impd1_remove_one(struct device *dev, void *data) |
425 | { | |
426 | device_unregister(dev); | |
427 | return 0; | |
428 | } | |
429 | ||
1da177e4 LT |
430 | static void impd1_remove(struct lm_device *dev) |
431 | { | |
432 | struct impd1_module *impd1 = lm_get_drvdata(dev); | |
1da177e4 LT |
433 | int i; |
434 | ||
d1856637 | 435 | device_for_each_child(&dev->dev, NULL, impd1_remove_one); |
1da177e4 LT |
436 | |
437 | for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) | |
438 | clk_unregister(&impd1->vcos[i]); | |
439 | ||
440 | lm_set_drvdata(dev, NULL); | |
441 | ||
442 | iounmap(impd1->base); | |
443 | kfree(impd1); | |
444 | release_mem_region(dev->resource.start, SZ_4K); | |
445 | } | |
446 | ||
447 | static struct lm_driver impd1_driver = { | |
448 | .drv = { | |
449 | .name = "impd1", | |
450 | }, | |
451 | .probe = impd1_probe, | |
452 | .remove = impd1_remove, | |
453 | }; | |
454 | ||
455 | static int __init impd1_init(void) | |
456 | { | |
457 | return lm_driver_register(&impd1_driver); | |
458 | } | |
459 | ||
460 | static void __exit impd1_exit(void) | |
461 | { | |
462 | lm_driver_unregister(&impd1_driver); | |
463 | } | |
464 | ||
465 | module_init(impd1_init); | |
466 | module_exit(impd1_exit); | |
467 | ||
468 | MODULE_LICENSE("GPL"); | |
469 | MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver"); | |
470 | MODULE_AUTHOR("Deep Blue Solutions Ltd"); |