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