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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> | |
fced80c7 | 23 | #include <linux/io.h> |
70ee6577 | 24 | #include <linux/platform_data/clk-integrator.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
1da177e4 | 26 | |
a09e64fb RK |
27 | #include <mach/lm.h> |
28 | #include <mach/impd1.h> | |
1da177e4 LT |
29 | #include <asm/sizes.h> |
30 | ||
1da177e4 LT |
31 | static int module_id; |
32 | ||
33 | module_param_named(lmid, module_id, int, 0444); | |
34 | MODULE_PARM_DESC(lmid, "logic module stack position"); | |
35 | ||
36 | struct impd1_module { | |
37 | void __iomem *base; | |
9bf5b2ef RK |
38 | }; |
39 | ||
1da177e4 LT |
40 | void impd1_tweak_control(struct device *dev, u32 mask, u32 val) |
41 | { | |
42 | struct impd1_module *impd1 = dev_get_drvdata(dev); | |
43 | u32 cur; | |
44 | ||
45 | val &= mask; | |
46 | cur = readl(impd1->base + IMPD1_CTRL) & ~mask; | |
47 | writel(cur | val, impd1->base + IMPD1_CTRL); | |
48 | } | |
49 | ||
50 | EXPORT_SYMBOL(impd1_tweak_control); | |
51 | ||
52 | /* | |
53 | * CLCD support | |
54 | */ | |
55 | #define PANEL PROSPECTOR | |
56 | ||
57 | #define LTM10C209 1 | |
58 | #define PROSPECTOR 2 | |
59 | #define SVGA 3 | |
60 | #define VGA 4 | |
61 | ||
62 | #if PANEL == VGA | |
63 | #define PANELTYPE vga | |
64 | static struct clcd_panel vga = { | |
65 | .mode = { | |
66 | .name = "VGA", | |
67 | .refresh = 60, | |
68 | .xres = 640, | |
69 | .yres = 480, | |
70 | .pixclock = 39721, | |
71 | .left_margin = 40, | |
72 | .right_margin = 24, | |
73 | .upper_margin = 32, | |
74 | .lower_margin = 11, | |
75 | .hsync_len = 96, | |
76 | .vsync_len = 2, | |
77 | .sync = 0, | |
78 | .vmode = FB_VMODE_NONINTERLACED, | |
79 | }, | |
80 | .width = -1, | |
81 | .height = -1, | |
82 | .tim2 = TIM2_BCD | TIM2_IPC, | |
83 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
9dfec4fe | 84 | .caps = CLCD_CAP_5551, |
1da177e4 LT |
85 | .connector = IMPD1_CTRL_DISP_VGA, |
86 | .bpp = 16, | |
87 | .grayscale = 0, | |
88 | }; | |
89 | ||
90 | #elif PANEL == SVGA | |
91 | #define PANELTYPE svga | |
92 | static struct clcd_panel svga = { | |
93 | .mode = { | |
94 | .name = "SVGA", | |
95 | .refresh = 0, | |
96 | .xres = 800, | |
97 | .yres = 600, | |
98 | .pixclock = 27778, | |
99 | .left_margin = 20, | |
100 | .right_margin = 20, | |
101 | .upper_margin = 5, | |
102 | .lower_margin = 5, | |
103 | .hsync_len = 164, | |
104 | .vsync_len = 62, | |
105 | .sync = 0, | |
106 | .vmode = FB_VMODE_NONINTERLACED, | |
107 | }, | |
108 | .width = -1, | |
109 | .height = -1, | |
110 | .tim2 = TIM2_BCD, | |
111 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
112 | .connector = IMPD1_CTRL_DISP_VGA, | |
9dfec4fe | 113 | .caps = CLCD_CAP_5551, |
1da177e4 LT |
114 | .bpp = 16, |
115 | .grayscale = 0, | |
116 | }; | |
117 | ||
118 | #elif PANEL == PROSPECTOR | |
119 | #define PANELTYPE prospector | |
120 | static struct clcd_panel prospector = { | |
121 | .mode = { | |
122 | .name = "PROSPECTOR", | |
123 | .refresh = 0, | |
124 | .xres = 640, | |
125 | .yres = 480, | |
126 | .pixclock = 40000, | |
127 | .left_margin = 33, | |
128 | .right_margin = 64, | |
129 | .upper_margin = 36, | |
130 | .lower_margin = 7, | |
131 | .hsync_len = 64, | |
132 | .vsync_len = 25, | |
133 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
134 | .vmode = FB_VMODE_NONINTERLACED, | |
135 | }, | |
136 | .width = -1, | |
137 | .height = -1, | |
138 | .tim2 = TIM2_BCD, | |
139 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
9dfec4fe | 140 | .caps = CLCD_CAP_5551, |
1da177e4 LT |
141 | .fixedtimings = 1, |
142 | .connector = IMPD1_CTRL_DISP_LCD, | |
143 | .bpp = 16, | |
144 | .grayscale = 0, | |
145 | }; | |
146 | ||
147 | #elif PANEL == LTM10C209 | |
148 | #define PANELTYPE ltm10c209 | |
149 | /* | |
150 | * Untested. | |
151 | */ | |
152 | static struct clcd_panel ltm10c209 = { | |
153 | .mode = { | |
154 | .name = "LTM10C209", | |
155 | .refresh = 0, | |
156 | .xres = 640, | |
157 | .yres = 480, | |
158 | .pixclock = 40000, | |
159 | .left_margin = 20, | |
160 | .right_margin = 20, | |
161 | .upper_margin = 19, | |
162 | .lower_margin = 19, | |
163 | .hsync_len = 20, | |
164 | .vsync_len = 10, | |
165 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
166 | .vmode = FB_VMODE_NONINTERLACED, | |
167 | }, | |
168 | .width = -1, | |
169 | .height = -1, | |
170 | .tim2 = TIM2_BCD, | |
171 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
9dfec4fe | 172 | .caps = CLCD_CAP_5551, |
1da177e4 LT |
173 | .fixedtimings = 1, |
174 | .connector = IMPD1_CTRL_DISP_LCD, | |
175 | .bpp = 16, | |
176 | .grayscale = 0, | |
177 | }; | |
178 | #endif | |
179 | ||
180 | /* | |
181 | * Disable all display connectors on the interface module. | |
182 | */ | |
183 | static void impd1fb_clcd_disable(struct clcd_fb *fb) | |
184 | { | |
185 | impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, 0); | |
186 | } | |
187 | ||
188 | /* | |
189 | * Enable the relevant connector on the interface module. | |
190 | */ | |
191 | static void impd1fb_clcd_enable(struct clcd_fb *fb) | |
192 | { | |
193 | impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, | |
194 | fb->panel->connector | IMPD1_CTRL_DISP_ENABLE); | |
195 | } | |
196 | ||
197 | static int impd1fb_clcd_setup(struct clcd_fb *fb) | |
198 | { | |
199 | unsigned long framebase = fb->dev->res.start + 0x01000000; | |
200 | unsigned long framesize = SZ_1M; | |
201 | int ret = 0; | |
202 | ||
203 | fb->panel = &PANELTYPE; | |
204 | ||
205 | if (!request_mem_region(framebase, framesize, "clcd framebuffer")) { | |
206 | printk(KERN_ERR "IM-PD1: unable to reserve framebuffer\n"); | |
207 | return -EBUSY; | |
208 | } | |
209 | ||
210 | fb->fb.screen_base = ioremap(framebase, framesize); | |
211 | if (!fb->fb.screen_base) { | |
212 | printk(KERN_ERR "IM-PD1: unable to map framebuffer\n"); | |
213 | ret = -ENOMEM; | |
214 | goto free_buffer; | |
215 | } | |
216 | ||
217 | fb->fb.fix.smem_start = framebase; | |
218 | fb->fb.fix.smem_len = framesize; | |
219 | ||
220 | return 0; | |
221 | ||
222 | free_buffer: | |
223 | release_mem_region(framebase, framesize); | |
224 | return ret; | |
225 | } | |
226 | ||
227 | static int impd1fb_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
228 | { | |
229 | unsigned long start, size; | |
230 | ||
231 | start = vma->vm_pgoff + (fb->fb.fix.smem_start >> PAGE_SHIFT); | |
232 | size = vma->vm_end - vma->vm_start; | |
233 | ||
234 | return remap_pfn_range(vma, vma->vm_start, start, size, | |
235 | vma->vm_page_prot); | |
236 | } | |
237 | ||
238 | static void impd1fb_clcd_remove(struct clcd_fb *fb) | |
239 | { | |
240 | iounmap(fb->fb.screen_base); | |
241 | release_mem_region(fb->fb.fix.smem_start, fb->fb.fix.smem_len); | |
242 | } | |
243 | ||
244 | static struct clcd_board impd1_clcd_data = { | |
245 | .name = "IM-PD/1", | |
9dfec4fe | 246 | .caps = CLCD_CAP_5551 | CLCD_CAP_888, |
1da177e4 LT |
247 | .check = clcdfb_check, |
248 | .decode = clcdfb_decode, | |
249 | .disable = impd1fb_clcd_disable, | |
250 | .enable = impd1fb_clcd_enable, | |
251 | .setup = impd1fb_clcd_setup, | |
252 | .mmap = impd1fb_clcd_mmap, | |
253 | .remove = impd1fb_clcd_remove, | |
254 | }; | |
255 | ||
256 | struct impd1_device { | |
257 | unsigned long offset; | |
258 | unsigned int irq[2]; | |
259 | unsigned int id; | |
260 | void *platform_data; | |
261 | }; | |
262 | ||
263 | static struct impd1_device impd1_devs[] = { | |
264 | { | |
265 | .offset = 0x03000000, | |
266 | .id = 0x00041190, | |
267 | }, { | |
268 | .offset = 0x00100000, | |
269 | .irq = { 1 }, | |
270 | .id = 0x00141011, | |
271 | }, { | |
272 | .offset = 0x00200000, | |
273 | .irq = { 2 }, | |
274 | .id = 0x00141011, | |
275 | }, { | |
276 | .offset = 0x00300000, | |
277 | .irq = { 3 }, | |
278 | .id = 0x00041022, | |
279 | }, { | |
280 | .offset = 0x00400000, | |
281 | .irq = { 4 }, | |
282 | .id = 0x00041061, | |
283 | }, { | |
284 | .offset = 0x00500000, | |
285 | .irq = { 5 }, | |
286 | .id = 0x00041061, | |
287 | }, { | |
288 | .offset = 0x00600000, | |
289 | .irq = { 6 }, | |
290 | .id = 0x00041130, | |
291 | }, { | |
292 | .offset = 0x00700000, | |
293 | .irq = { 7, 8 }, | |
294 | .id = 0x00041181, | |
295 | }, { | |
296 | .offset = 0x00800000, | |
297 | .irq = { 9 }, | |
298 | .id = 0x00041041, | |
299 | }, { | |
300 | .offset = 0x01000000, | |
301 | .irq = { 11 }, | |
302 | .id = 0x00041110, | |
303 | .platform_data = &impd1_clcd_data, | |
304 | } | |
305 | }; | |
306 | ||
1da177e4 LT |
307 | static int impd1_probe(struct lm_device *dev) |
308 | { | |
309 | struct impd1_module *impd1; | |
310 | int i, ret; | |
311 | ||
312 | if (dev->id != module_id) | |
313 | return -EINVAL; | |
314 | ||
315 | if (!request_mem_region(dev->resource.start, SZ_4K, "LM registers")) | |
316 | return -EBUSY; | |
317 | ||
d2a02b93 | 318 | impd1 = kzalloc(sizeof(struct impd1_module), GFP_KERNEL); |
1da177e4 LT |
319 | if (!impd1) { |
320 | ret = -ENOMEM; | |
321 | goto release_lm; | |
322 | } | |
1da177e4 LT |
323 | |
324 | impd1->base = ioremap(dev->resource.start, SZ_4K); | |
325 | if (!impd1->base) { | |
326 | ret = -ENOMEM; | |
327 | goto free_impd1; | |
328 | } | |
329 | ||
330 | lm_set_drvdata(dev, impd1); | |
331 | ||
7c28472a RK |
332 | printk("IM-PD1 found at 0x%08lx\n", |
333 | (unsigned long)dev->resource.start); | |
1da177e4 | 334 | |
70ee6577 | 335 | integrator_impd1_clk_init(impd1->base, dev->id); |
d72fbdf0 | 336 | |
1da177e4 LT |
337 | for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) { |
338 | struct impd1_device *idev = impd1_devs + i; | |
339 | struct amba_device *d; | |
340 | unsigned long pc_base; | |
4ff35d86 | 341 | char devname[32]; |
1da177e4 LT |
342 | |
343 | pc_base = dev->resource.start + idev->offset; | |
4ff35d86 | 344 | snprintf(devname, 32, "lm%x:%5.5lx", dev->id, idev->offset >> 12); |
2148b93a LW |
345 | d = amba_ahb_device_add_res(&dev->dev, devname, pc_base, SZ_4K, |
346 | dev->irq, dev->irq, | |
347 | idev->platform_data, idev->id, | |
348 | &dev->resource); | |
4ff35d86 LW |
349 | if (IS_ERR(d)) { |
350 | dev_err(&dev->dev, "unable to register device: %ld\n", PTR_ERR(d)); | |
1da177e4 | 351 | continue; |
1da177e4 LT |
352 | } |
353 | } | |
354 | ||
355 | return 0; | |
356 | ||
357 | free_impd1: | |
358 | if (impd1 && impd1->base) | |
359 | iounmap(impd1->base); | |
b2325fe1 | 360 | kfree(impd1); |
1da177e4 LT |
361 | release_lm: |
362 | release_mem_region(dev->resource.start, SZ_4K); | |
363 | return ret; | |
364 | } | |
365 | ||
d1856637 RK |
366 | static int impd1_remove_one(struct device *dev, void *data) |
367 | { | |
368 | device_unregister(dev); | |
369 | return 0; | |
370 | } | |
371 | ||
1da177e4 LT |
372 | static void impd1_remove(struct lm_device *dev) |
373 | { | |
374 | struct impd1_module *impd1 = lm_get_drvdata(dev); | |
1da177e4 | 375 | |
d1856637 | 376 | device_for_each_child(&dev->dev, NULL, impd1_remove_one); |
70ee6577 | 377 | integrator_impd1_clk_exit(dev->id); |
1da177e4 LT |
378 | |
379 | lm_set_drvdata(dev, NULL); | |
380 | ||
381 | iounmap(impd1->base); | |
382 | kfree(impd1); | |
383 | release_mem_region(dev->resource.start, SZ_4K); | |
384 | } | |
385 | ||
386 | static struct lm_driver impd1_driver = { | |
387 | .drv = { | |
388 | .name = "impd1", | |
389 | }, | |
390 | .probe = impd1_probe, | |
391 | .remove = impd1_remove, | |
392 | }; | |
393 | ||
394 | static int __init impd1_init(void) | |
395 | { | |
396 | return lm_driver_register(&impd1_driver); | |
397 | } | |
398 | ||
399 | static void __exit impd1_exit(void) | |
400 | { | |
401 | lm_driver_unregister(&impd1_driver); | |
402 | } | |
403 | ||
404 | module_init(impd1_init); | |
405 | module_exit(impd1_exit); | |
406 | ||
407 | MODULE_LICENSE("GPL"); | |
408 | MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver"); | |
409 | MODULE_AUTHOR("Deep Blue Solutions Ltd"); |