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Linux 4.1.18
[linux/fpc-iii.git] / arch / arm / mach-integrator / impd1.c
blob38b0da300dd547744a54eca9fe8a21c04177998b
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>
21 #include <linux/amba/bus.h>
22 #include <linux/amba/clcd.h>
23 #include <linux/amba/mmci.h>
24 #include <linux/amba/pl061.h>
25 #include <linux/io.h>
26 #include <linux/platform_data/clk-integrator.h>
27 #include <linux/slab.h>
28 #include <linux/irqchip/arm-vic.h>
29 #include <linux/gpio/machine.h>
30
31 #include <asm/sizes.h>
32 #include "lm.h"
33 #include "impd1.h"
34
35 static int module_id;
36
37 module_param_named(lmid, module_id, int, 0444);
38 MODULE_PARM_DESC(lmid, "logic module stack position");
39
40 struct impd1_module {
41 void __iomem *base;
42 void __iomem *vic_base;
43 };
44
45 void impd1_tweak_control(struct device *dev, u32 mask, u32 val)
46 {
47 struct impd1_module *impd1 = dev_get_drvdata(dev);
48 u32 cur;
49
50 val &= mask;
51 cur = readl(impd1->base + IMPD1_CTRL) & ~mask;
52 writel(cur | val, impd1->base + IMPD1_CTRL);
53 }
54
55 EXPORT_SYMBOL(impd1_tweak_control);
56
57 /*
58 * MMC support
59 */
60 static struct mmci_platform_data mmc_data = {
61 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
62 };
63
64 /*
65 * CLCD support
66 */
67 #define PANEL PROSPECTOR
68
69 #define LTM10C209 1
70 #define PROSPECTOR 2
71 #define SVGA 3
72 #define VGA 4
73
74 #if PANEL == VGA
75 #define PANELTYPE vga
76 static struct clcd_panel vga = {
77 .mode = {
78 .name = "VGA",
79 .refresh = 60,
80 .xres = 640,
81 .yres = 480,
82 .pixclock = 39721,
83 .left_margin = 40,
84 .right_margin = 24,
85 .upper_margin = 32,
86 .lower_margin = 11,
87 .hsync_len = 96,
88 .vsync_len = 2,
89 .sync = 0,
90 .vmode = FB_VMODE_NONINTERLACED,
91 },
92 .width = -1,
93 .height = -1,
94 .tim2 = TIM2_BCD | TIM2_IPC,
95 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
96 .caps = CLCD_CAP_5551,
97 .connector = IMPD1_CTRL_DISP_VGA,
98 .bpp = 16,
99 .grayscale = 0,
100 };
101
102 #elif PANEL == SVGA
103 #define PANELTYPE svga
104 static struct clcd_panel svga = {
105 .mode = {
106 .name = "SVGA",
107 .refresh = 0,
108 .xres = 800,
109 .yres = 600,
110 .pixclock = 27778,
111 .left_margin = 20,
112 .right_margin = 20,
113 .upper_margin = 5,
114 .lower_margin = 5,
115 .hsync_len = 164,
116 .vsync_len = 62,
117 .sync = 0,
118 .vmode = FB_VMODE_NONINTERLACED,
119 },
120 .width = -1,
121 .height = -1,
122 .tim2 = TIM2_BCD,
123 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
124 .connector = IMPD1_CTRL_DISP_VGA,
125 .caps = CLCD_CAP_5551,
126 .bpp = 16,
127 .grayscale = 0,
128 };
129
130 #elif PANEL == PROSPECTOR
131 #define PANELTYPE prospector
132 static struct clcd_panel prospector = {
133 .mode = {
134 .name = "PROSPECTOR",
135 .refresh = 0,
136 .xres = 640,
137 .yres = 480,
138 .pixclock = 40000,
139 .left_margin = 33,
140 .right_margin = 64,
141 .upper_margin = 36,
142 .lower_margin = 7,
143 .hsync_len = 64,
144 .vsync_len = 25,
145 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
146 .vmode = FB_VMODE_NONINTERLACED,
147 },
148 .width = -1,
149 .height = -1,
150 .tim2 = TIM2_BCD,
151 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
152 .caps = CLCD_CAP_5551,
153 .fixedtimings = 1,
154 .connector = IMPD1_CTRL_DISP_LCD,
155 .bpp = 16,
156 .grayscale = 0,
157 };
158
159 #elif PANEL == LTM10C209
160 #define PANELTYPE ltm10c209
161 /*
162 * Untested.
163 */
164 static struct clcd_panel ltm10c209 = {
165 .mode = {
166 .name = "LTM10C209",
167 .refresh = 0,
168 .xres = 640,
169 .yres = 480,
170 .pixclock = 40000,
171 .left_margin = 20,
172 .right_margin = 20,
173 .upper_margin = 19,
174 .lower_margin = 19,
175 .hsync_len = 20,
176 .vsync_len = 10,
177 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
178 .vmode = FB_VMODE_NONINTERLACED,
179 },
180 .width = -1,
181 .height = -1,
182 .tim2 = TIM2_BCD,
183 .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
184 .caps = CLCD_CAP_5551,
185 .fixedtimings = 1,
186 .connector = IMPD1_CTRL_DISP_LCD,
187 .bpp = 16,
188 .grayscale = 0,
189 };
190 #endif
191
192 /*
193 * Disable all display connectors on the interface module.
194 */
195 static void impd1fb_clcd_disable(struct clcd_fb *fb)
196 {
197 impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK, 0);
198 }
199
200 /*
201 * Enable the relevant connector on the interface module.
202 */
203 static void impd1fb_clcd_enable(struct clcd_fb *fb)
204 {
205 impd1_tweak_control(fb->dev->dev.parent, IMPD1_CTRL_DISP_MASK,
206 fb->panel->connector | IMPD1_CTRL_DISP_ENABLE);
207 }
208
209 static int impd1fb_clcd_setup(struct clcd_fb *fb)
210 {
211 unsigned long framebase = fb->dev->res.start + 0x01000000;
212 unsigned long framesize = SZ_1M;
213 int ret = 0;
214
215 fb->panel = &PANELTYPE;
216
217 if (!request_mem_region(framebase, framesize, "clcd framebuffer")) {
218 printk(KERN_ERR "IM-PD1: unable to reserve framebuffer\n");
219 return -EBUSY;
220 }
221
222 fb->fb.screen_base = ioremap(framebase, framesize);
223 if (!fb->fb.screen_base) {
224 printk(KERN_ERR "IM-PD1: unable to map framebuffer\n");
225 ret = -ENOMEM;
226 goto free_buffer;
227 }
228
229 fb->fb.fix.smem_start = framebase;
230 fb->fb.fix.smem_len = framesize;
231
232 return 0;
233
234 free_buffer:
235 release_mem_region(framebase, framesize);
236 return ret;
237 }
238
239 static int impd1fb_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
240 {
241 unsigned long start, size;
242
243 start = vma->vm_pgoff + (fb->fb.fix.smem_start >> PAGE_SHIFT);
244 size = vma->vm_end - vma->vm_start;
245
246 return remap_pfn_range(vma, vma->vm_start, start, size,
247 vma->vm_page_prot);
248 }
249
250 static void impd1fb_clcd_remove(struct clcd_fb *fb)
251 {
252 iounmap(fb->fb.screen_base);
253 release_mem_region(fb->fb.fix.smem_start, fb->fb.fix.smem_len);
254 }
255
256 static struct clcd_board impd1_clcd_data = {
257 .name = "IM-PD/1",
258 .caps = CLCD_CAP_5551 | CLCD_CAP_888,
259 .check = clcdfb_check,
260 .decode = clcdfb_decode,
261 .disable = impd1fb_clcd_disable,
262 .enable = impd1fb_clcd_enable,
263 .setup = impd1fb_clcd_setup,
264 .mmap = impd1fb_clcd_mmap,
265 .remove = impd1fb_clcd_remove,
266 };
267
268 struct impd1_device {
269 unsigned long offset;
270 unsigned int irq[2];
271 unsigned int id;
272 void *platform_data;
273 };
274
275 static struct impd1_device impd1_devs[] = {
276 {
277 .offset = 0x00100000,
278 .irq = { 1 },
279 .id = 0x00141011,
280 }, {
281 .offset = 0x00200000,
282 .irq = { 2 },
283 .id = 0x00141011,
284 }, {
285 .offset = 0x00300000,
286 .irq = { 3 },
287 .id = 0x00041022,
288 }, {
289 .offset = 0x00400000,
290 .irq = { 4 },
291 .id = 0x00041061,
292 }, {
293 .offset = 0x00500000,
294 .irq = { 5 },
295 .id = 0x00041061,
296 }, {
297 .offset = 0x00600000,
298 .irq = { 6 },
299 .id = 0x00041130,
300 }, {
301 .offset = 0x00700000,
302 .irq = { 7, 8 },
303 .id = 0x00041181,
304 .platform_data = &mmc_data,
305 }, {
306 .offset = 0x00800000,
307 .irq = { 9 },
308 .id = 0x00041041,
309 }, {
310 .offset = 0x01000000,
311 .irq = { 11 },
312 .id = 0x00041110,
313 .platform_data = &impd1_clcd_data,
314 }
315 };
316
317 /*
318 * Valid IRQs: 0 thru 9 and 11, 10 unused.
319 */
320 #define IMPD1_VALID_IRQS 0x00000bffU
321
322 /*
323 * As this module is bool, it is OK to have this as __init_refok() - no
324 * probe calls will be done after the initial system bootup, as devices
325 * are discovered as part of the machine startup.
326 */
327 static int __init_refok impd1_probe(struct lm_device *dev)
328 {
329 struct impd1_module *impd1;
330 int irq_base;
331 int i;
332
333 if (dev->id != module_id)
334 return -EINVAL;
335
336 if (!devm_request_mem_region(&dev->dev, dev->resource.start,
337 SZ_4K, "LM registers"))
338 return -EBUSY;
339
340 impd1 = devm_kzalloc(&dev->dev, sizeof(struct impd1_module),
341 GFP_KERNEL);
342 if (!impd1)
343 return -ENOMEM;
344
345 impd1->base = devm_ioremap(&dev->dev, dev->resource.start, SZ_4K);
346 if (!impd1->base)
347 return -ENOMEM;
348
349 integrator_impd1_clk_init(impd1->base, dev->id);
350
351 if (!devm_request_mem_region(&dev->dev,
352 dev->resource.start + 0x03000000,
353 SZ_4K, "VIC"))
354 return -EBUSY;
355
356 impd1->vic_base = devm_ioremap(&dev->dev,
357 dev->resource.start + 0x03000000,
358 SZ_4K);
359 if (!impd1->vic_base)
360 return -ENOMEM;
361
362 irq_base = vic_init_cascaded(impd1->vic_base, dev->irq,
363 IMPD1_VALID_IRQS, 0);
364
365 lm_set_drvdata(dev, impd1);
366
367 dev_info(&dev->dev, "IM-PD1 found at 0x%08lx\n",
368 (unsigned long)dev->resource.start);
369
370 for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) {
371 struct impd1_device *idev = impd1_devs + i;
372 struct amba_device *d;
373 unsigned long pc_base;
374 char devname[32];
375 int irq1 = idev->irq[0];
376 int irq2 = idev->irq[1];
377
378 /* Translate IRQs to IM-PD1 local numberspace */
379 if (irq1)
380 irq1 += irq_base;
381 if (irq2)
382 irq2 += irq_base;
383
384 pc_base = dev->resource.start + idev->offset;
385 snprintf(devname, 32, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
386
387 /* Add GPIO descriptor lookup table for the PL061 block */
388 if (idev->offset == 0x00400000) {
389 struct gpiod_lookup_table *lookup;
390 char *chipname;
391 char *mmciname;
392
393 lookup = devm_kzalloc(&dev->dev,
394 sizeof(*lookup) + 3 * sizeof(struct gpiod_lookup),
395 GFP_KERNEL);
396 chipname = devm_kstrdup(&dev->dev, devname, GFP_KERNEL);
397 mmciname = kasprintf(GFP_KERNEL, "lm%x:00700", dev->id);
398 lookup->dev_id = mmciname;
399 /*
400 * Offsets on GPIO block 1:
401 * 3 = MMC WP (write protect)
402 * 4 = MMC CD (card detect)
403 *
404 * Offsets on GPIO block 2:
405 * 0 = Up key
406 * 1 = Down key
407 * 2 = Left key
408 * 3 = Right key
409 * 4 = Key lower left
410 * 5 = Key lower right
411 */
412 /* We need the two MMCI GPIO entries */
413 lookup->table[0].chip_label = chipname;
414 lookup->table[0].chip_hwnum = 3;
415 lookup->table[0].con_id = "wp";
416 lookup->table[1].chip_label = chipname;
417 lookup->table[1].chip_hwnum = 4;
418 lookup->table[1].con_id = "cd";
419 lookup->table[1].flags = GPIO_ACTIVE_LOW;
420 gpiod_add_lookup_table(lookup);
421 }
422
423 d = amba_ahb_device_add_res(&dev->dev, devname, pc_base, SZ_4K,
424 irq1, irq2,
425 idev->platform_data, idev->id,
426 &dev->resource);
427 if (IS_ERR(d)) {
428 dev_err(&dev->dev, "unable to register device: %ld\n", PTR_ERR(d));
429 continue;
430 }
431 }
432
433 return 0;
434 }
435
436 static int impd1_remove_one(struct device *dev, void *data)
437 {
438 device_unregister(dev);
439 return 0;
440 }
441
442 static void impd1_remove(struct lm_device *dev)
443 {
444 device_for_each_child(&dev->dev, NULL, impd1_remove_one);
445 integrator_impd1_clk_exit(dev->id);
446
447 lm_set_drvdata(dev, NULL);
448 }
449
450 static struct lm_driver impd1_driver = {
451 .drv = {
452 .name = "impd1",
453 /*
454 * As we're dropping the probe() function, suppress driver
455 * binding from sysfs.
456 */
457 .suppress_bind_attrs = true,
458 },
459 .probe = impd1_probe,
460 .remove = impd1_remove,
461 };
462
463 static int __init impd1_init(void)
464 {
465 return lm_driver_register(&impd1_driver);
466 }
467
468 static void __exit impd1_exit(void)
469 {
470 lm_driver_unregister(&impd1_driver);
471 }
472
473 module_init(impd1_init);
474 module_exit(impd1_exit);
475
476 MODULE_LICENSE("GPL");
477 MODULE_DESCRIPTION("Integrator/IM-PD1 logic module core driver");
478 MODULE_AUTHOR("Deep Blue Solutions Ltd");
Linux with added FPC-III support