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1c248b7d ID |
1 | /* exynos_drm_fimd.c |
2 | * | |
3 | * Copyright (C) 2011 Samsung Electronics Co.Ltd | |
4 | * Authors: | |
5 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
6 | * Inki Dae <inki.dae@samsung.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
14 | #include "drmP.h" | |
15 | ||
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/clk.h> | |
cb91f6a0 | 20 | #include <linux/pm_runtime.h> |
1c248b7d ID |
21 | |
22 | #include <drm/exynos_drm.h> | |
23 | #include <plat/regs-fb-v4.h> | |
24 | ||
25 | #include "exynos_drm_drv.h" | |
26 | #include "exynos_drm_fbdev.h" | |
27 | #include "exynos_drm_crtc.h" | |
28 | ||
29 | /* | |
30 | * FIMD is stand for Fully Interactive Mobile Display and | |
31 | * as a display controller, it transfers contents drawn on memory | |
32 | * to a LCD Panel through Display Interfaces such as RGB or | |
33 | * CPU Interface. | |
34 | */ | |
35 | ||
36 | /* position control register for hardware window 0, 2 ~ 4.*/ | |
37 | #define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16) | |
38 | #define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16) | |
39 | /* size control register for hardware window 0. */ | |
40 | #define VIDOSD_C_SIZE_W0 (VIDOSD_BASE + 0x08) | |
41 | /* alpha control register for hardware window 1 ~ 4. */ | |
42 | #define VIDOSD_C(win) (VIDOSD_BASE + 0x18 + (win) * 16) | |
43 | /* size control register for hardware window 1 ~ 4. */ | |
44 | #define VIDOSD_D(win) (VIDOSD_BASE + 0x0C + (win) * 16) | |
45 | ||
46 | #define VIDWx_BUF_START(win, buf) (VIDW_BUF_START(buf) + (win) * 8) | |
47 | #define VIDWx_BUF_END(win, buf) (VIDW_BUF_END(buf) + (win) * 8) | |
48 | #define VIDWx_BUF_SIZE(win, buf) (VIDW_BUF_SIZE(buf) + (win) * 4) | |
49 | ||
50 | /* color key control register for hardware window 1 ~ 4. */ | |
51 | #define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + (x * 8)) | |
52 | /* color key value register for hardware window 1 ~ 4. */ | |
53 | #define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + (x * 8)) | |
54 | ||
55 | /* FIMD has totally five hardware windows. */ | |
56 | #define WINDOWS_NR 5 | |
57 | ||
58 | #define get_fimd_context(dev) platform_get_drvdata(to_platform_device(dev)) | |
59 | ||
60 | struct fimd_win_data { | |
61 | unsigned int offset_x; | |
62 | unsigned int offset_y; | |
19c8b834 ID |
63 | unsigned int ovl_width; |
64 | unsigned int ovl_height; | |
65 | unsigned int fb_width; | |
66 | unsigned int fb_height; | |
1c248b7d | 67 | unsigned int bpp; |
2c871127 | 68 | dma_addr_t dma_addr; |
1c248b7d ID |
69 | void __iomem *vaddr; |
70 | unsigned int buf_offsize; | |
71 | unsigned int line_size; /* bytes */ | |
ec05da95 | 72 | bool enabled; |
1c248b7d ID |
73 | }; |
74 | ||
75 | struct fimd_context { | |
76 | struct exynos_drm_subdrv subdrv; | |
77 | int irq; | |
78 | struct drm_crtc *crtc; | |
79 | struct clk *bus_clk; | |
80 | struct clk *lcd_clk; | |
81 | struct resource *regs_res; | |
82 | void __iomem *regs; | |
83 | struct fimd_win_data win_data[WINDOWS_NR]; | |
84 | unsigned int clkdiv; | |
85 | unsigned int default_win; | |
86 | unsigned long irq_flags; | |
87 | u32 vidcon0; | |
88 | u32 vidcon1; | |
cb91f6a0 | 89 | bool suspended; |
c32b06ef | 90 | struct mutex lock; |
1c248b7d | 91 | |
607c50d4 | 92 | struct exynos_drm_panel_info *panel; |
1c248b7d ID |
93 | }; |
94 | ||
95 | static bool fimd_display_is_connected(struct device *dev) | |
96 | { | |
1c248b7d ID |
97 | DRM_DEBUG_KMS("%s\n", __FILE__); |
98 | ||
99 | /* TODO. */ | |
100 | ||
101 | return true; | |
102 | } | |
103 | ||
607c50d4 | 104 | static void *fimd_get_panel(struct device *dev) |
1c248b7d ID |
105 | { |
106 | struct fimd_context *ctx = get_fimd_context(dev); | |
107 | ||
108 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
109 | ||
607c50d4 | 110 | return ctx->panel; |
1c248b7d ID |
111 | } |
112 | ||
113 | static int fimd_check_timing(struct device *dev, void *timing) | |
114 | { | |
1c248b7d ID |
115 | DRM_DEBUG_KMS("%s\n", __FILE__); |
116 | ||
117 | /* TODO. */ | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | static int fimd_display_power_on(struct device *dev, int mode) | |
123 | { | |
1c248b7d ID |
124 | DRM_DEBUG_KMS("%s\n", __FILE__); |
125 | ||
ec05da95 | 126 | /* TODO */ |
1c248b7d ID |
127 | |
128 | return 0; | |
129 | } | |
130 | ||
74ccc539 | 131 | static struct exynos_drm_display_ops fimd_display_ops = { |
1c248b7d ID |
132 | .type = EXYNOS_DISPLAY_TYPE_LCD, |
133 | .is_connected = fimd_display_is_connected, | |
607c50d4 | 134 | .get_panel = fimd_get_panel, |
1c248b7d ID |
135 | .check_timing = fimd_check_timing, |
136 | .power_on = fimd_display_power_on, | |
137 | }; | |
138 | ||
ec05da95 ID |
139 | static void fimd_dpms(struct device *subdrv_dev, int mode) |
140 | { | |
c32b06ef ID |
141 | struct fimd_context *ctx = get_fimd_context(subdrv_dev); |
142 | ||
ec05da95 ID |
143 | DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode); |
144 | ||
c32b06ef ID |
145 | mutex_lock(&ctx->lock); |
146 | ||
cb91f6a0 JS |
147 | switch (mode) { |
148 | case DRM_MODE_DPMS_ON: | |
c32b06ef ID |
149 | /* |
150 | * enable fimd hardware only if suspended status. | |
151 | * | |
152 | * P.S. fimd_dpms function would be called at booting time so | |
153 | * clk_enable could be called double time. | |
154 | */ | |
155 | if (ctx->suspended) | |
156 | pm_runtime_get_sync(subdrv_dev); | |
cb91f6a0 JS |
157 | break; |
158 | case DRM_MODE_DPMS_STANDBY: | |
159 | case DRM_MODE_DPMS_SUSPEND: | |
160 | case DRM_MODE_DPMS_OFF: | |
373af0c0 ID |
161 | if (!ctx->suspended) |
162 | pm_runtime_put_sync(subdrv_dev); | |
cb91f6a0 JS |
163 | break; |
164 | default: | |
165 | DRM_DEBUG_KMS("unspecified mode %d\n", mode); | |
166 | break; | |
167 | } | |
c32b06ef ID |
168 | |
169 | mutex_unlock(&ctx->lock); | |
ec05da95 ID |
170 | } |
171 | ||
172 | static void fimd_apply(struct device *subdrv_dev) | |
173 | { | |
174 | struct fimd_context *ctx = get_fimd_context(subdrv_dev); | |
175 | struct exynos_drm_manager *mgr = &ctx->subdrv.manager; | |
176 | struct exynos_drm_manager_ops *mgr_ops = mgr->ops; | |
177 | struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops; | |
178 | struct fimd_win_data *win_data; | |
864ee9e6 | 179 | int i; |
ec05da95 ID |
180 | |
181 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
182 | ||
864ee9e6 JS |
183 | for (i = 0; i < WINDOWS_NR; i++) { |
184 | win_data = &ctx->win_data[i]; | |
185 | if (win_data->enabled && (ovl_ops && ovl_ops->commit)) | |
186 | ovl_ops->commit(subdrv_dev, i); | |
187 | } | |
ec05da95 ID |
188 | |
189 | if (mgr_ops && mgr_ops->commit) | |
190 | mgr_ops->commit(subdrv_dev); | |
191 | } | |
192 | ||
1c248b7d ID |
193 | static void fimd_commit(struct device *dev) |
194 | { | |
195 | struct fimd_context *ctx = get_fimd_context(dev); | |
607c50d4 ECK |
196 | struct exynos_drm_panel_info *panel = ctx->panel; |
197 | struct fb_videomode *timing = &panel->timing; | |
1c248b7d ID |
198 | u32 val; |
199 | ||
e30d4bcf ID |
200 | if (ctx->suspended) |
201 | return; | |
202 | ||
1c248b7d ID |
203 | DRM_DEBUG_KMS("%s\n", __FILE__); |
204 | ||
205 | /* setup polarity values from machine code. */ | |
206 | writel(ctx->vidcon1, ctx->regs + VIDCON1); | |
207 | ||
208 | /* setup vertical timing values. */ | |
209 | val = VIDTCON0_VBPD(timing->upper_margin - 1) | | |
210 | VIDTCON0_VFPD(timing->lower_margin - 1) | | |
211 | VIDTCON0_VSPW(timing->vsync_len - 1); | |
212 | writel(val, ctx->regs + VIDTCON0); | |
213 | ||
214 | /* setup horizontal timing values. */ | |
215 | val = VIDTCON1_HBPD(timing->left_margin - 1) | | |
216 | VIDTCON1_HFPD(timing->right_margin - 1) | | |
217 | VIDTCON1_HSPW(timing->hsync_len - 1); | |
218 | writel(val, ctx->regs + VIDTCON1); | |
219 | ||
220 | /* setup horizontal and vertical display size. */ | |
221 | val = VIDTCON2_LINEVAL(timing->yres - 1) | | |
222 | VIDTCON2_HOZVAL(timing->xres - 1); | |
223 | writel(val, ctx->regs + VIDTCON2); | |
224 | ||
225 | /* setup clock source, clock divider, enable dma. */ | |
226 | val = ctx->vidcon0; | |
227 | val &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR); | |
228 | ||
229 | if (ctx->clkdiv > 1) | |
230 | val |= VIDCON0_CLKVAL_F(ctx->clkdiv - 1) | VIDCON0_CLKDIR; | |
231 | else | |
232 | val &= ~VIDCON0_CLKDIR; /* 1:1 clock */ | |
233 | ||
234 | /* | |
235 | * fields of register with prefix '_F' would be updated | |
236 | * at vsync(same as dma start) | |
237 | */ | |
238 | val |= VIDCON0_ENVID | VIDCON0_ENVID_F; | |
239 | writel(val, ctx->regs + VIDCON0); | |
240 | } | |
241 | ||
242 | static int fimd_enable_vblank(struct device *dev) | |
243 | { | |
244 | struct fimd_context *ctx = get_fimd_context(dev); | |
245 | u32 val; | |
246 | ||
247 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
248 | ||
cb91f6a0 JS |
249 | if (ctx->suspended) |
250 | return -EPERM; | |
251 | ||
1c248b7d ID |
252 | if (!test_and_set_bit(0, &ctx->irq_flags)) { |
253 | val = readl(ctx->regs + VIDINTCON0); | |
254 | ||
255 | val |= VIDINTCON0_INT_ENABLE; | |
256 | val |= VIDINTCON0_INT_FRAME; | |
257 | ||
258 | val &= ~VIDINTCON0_FRAMESEL0_MASK; | |
259 | val |= VIDINTCON0_FRAMESEL0_VSYNC; | |
260 | val &= ~VIDINTCON0_FRAMESEL1_MASK; | |
261 | val |= VIDINTCON0_FRAMESEL1_NONE; | |
262 | ||
263 | writel(val, ctx->regs + VIDINTCON0); | |
264 | } | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | static void fimd_disable_vblank(struct device *dev) | |
270 | { | |
271 | struct fimd_context *ctx = get_fimd_context(dev); | |
272 | u32 val; | |
273 | ||
274 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
275 | ||
cb91f6a0 JS |
276 | if (ctx->suspended) |
277 | return; | |
278 | ||
1c248b7d ID |
279 | if (test_and_clear_bit(0, &ctx->irq_flags)) { |
280 | val = readl(ctx->regs + VIDINTCON0); | |
281 | ||
282 | val &= ~VIDINTCON0_INT_FRAME; | |
283 | val &= ~VIDINTCON0_INT_ENABLE; | |
284 | ||
285 | writel(val, ctx->regs + VIDINTCON0); | |
286 | } | |
287 | } | |
288 | ||
289 | static struct exynos_drm_manager_ops fimd_manager_ops = { | |
ec05da95 ID |
290 | .dpms = fimd_dpms, |
291 | .apply = fimd_apply, | |
1c248b7d ID |
292 | .commit = fimd_commit, |
293 | .enable_vblank = fimd_enable_vblank, | |
294 | .disable_vblank = fimd_disable_vblank, | |
295 | }; | |
296 | ||
297 | static void fimd_win_mode_set(struct device *dev, | |
298 | struct exynos_drm_overlay *overlay) | |
299 | { | |
300 | struct fimd_context *ctx = get_fimd_context(dev); | |
301 | struct fimd_win_data *win_data; | |
864ee9e6 | 302 | int win; |
19c8b834 | 303 | unsigned long offset; |
1c248b7d ID |
304 | |
305 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
306 | ||
307 | if (!overlay) { | |
308 | dev_err(dev, "overlay is NULL\n"); | |
309 | return; | |
310 | } | |
311 | ||
864ee9e6 JS |
312 | win = overlay->zpos; |
313 | if (win == DEFAULT_ZPOS) | |
314 | win = ctx->default_win; | |
315 | ||
316 | if (win < 0 || win > WINDOWS_NR) | |
317 | return; | |
318 | ||
19c8b834 ID |
319 | offset = overlay->fb_x * (overlay->bpp >> 3); |
320 | offset += overlay->fb_y * overlay->pitch; | |
321 | ||
322 | DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); | |
323 | ||
864ee9e6 | 324 | win_data = &ctx->win_data[win]; |
1c248b7d | 325 | |
19c8b834 ID |
326 | win_data->offset_x = overlay->crtc_x; |
327 | win_data->offset_y = overlay->crtc_y; | |
328 | win_data->ovl_width = overlay->crtc_width; | |
329 | win_data->ovl_height = overlay->crtc_height; | |
330 | win_data->fb_width = overlay->fb_width; | |
331 | win_data->fb_height = overlay->fb_height; | |
229d3534 SWK |
332 | win_data->dma_addr = overlay->dma_addr[0] + offset; |
333 | win_data->vaddr = overlay->vaddr[0] + offset; | |
1c248b7d | 334 | win_data->bpp = overlay->bpp; |
19c8b834 ID |
335 | win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * |
336 | (overlay->bpp >> 3); | |
337 | win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); | |
338 | ||
339 | DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", | |
340 | win_data->offset_x, win_data->offset_y); | |
341 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", | |
342 | win_data->ovl_width, win_data->ovl_height); | |
343 | DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n", | |
2c871127 | 344 | (unsigned long)win_data->dma_addr, |
19c8b834 ID |
345 | (unsigned long)win_data->vaddr); |
346 | DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", | |
347 | overlay->fb_width, overlay->crtc_width); | |
1c248b7d ID |
348 | } |
349 | ||
350 | static void fimd_win_set_pixfmt(struct device *dev, unsigned int win) | |
351 | { | |
352 | struct fimd_context *ctx = get_fimd_context(dev); | |
353 | struct fimd_win_data *win_data = &ctx->win_data[win]; | |
354 | unsigned long val; | |
355 | ||
356 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
357 | ||
358 | val = WINCONx_ENWIN; | |
359 | ||
360 | switch (win_data->bpp) { | |
361 | case 1: | |
362 | val |= WINCON0_BPPMODE_1BPP; | |
363 | val |= WINCONx_BITSWP; | |
364 | val |= WINCONx_BURSTLEN_4WORD; | |
365 | break; | |
366 | case 2: | |
367 | val |= WINCON0_BPPMODE_2BPP; | |
368 | val |= WINCONx_BITSWP; | |
369 | val |= WINCONx_BURSTLEN_8WORD; | |
370 | break; | |
371 | case 4: | |
372 | val |= WINCON0_BPPMODE_4BPP; | |
373 | val |= WINCONx_BITSWP; | |
374 | val |= WINCONx_BURSTLEN_8WORD; | |
375 | break; | |
376 | case 8: | |
377 | val |= WINCON0_BPPMODE_8BPP_PALETTE; | |
378 | val |= WINCONx_BURSTLEN_8WORD; | |
379 | val |= WINCONx_BYTSWP; | |
380 | break; | |
381 | case 16: | |
382 | val |= WINCON0_BPPMODE_16BPP_565; | |
383 | val |= WINCONx_HAWSWP; | |
384 | val |= WINCONx_BURSTLEN_16WORD; | |
385 | break; | |
386 | case 24: | |
387 | val |= WINCON0_BPPMODE_24BPP_888; | |
388 | val |= WINCONx_WSWP; | |
389 | val |= WINCONx_BURSTLEN_16WORD; | |
390 | break; | |
391 | case 32: | |
392 | val |= WINCON1_BPPMODE_28BPP_A4888 | |
393 | | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL; | |
394 | val |= WINCONx_WSWP; | |
395 | val |= WINCONx_BURSTLEN_16WORD; | |
396 | break; | |
397 | default: | |
398 | DRM_DEBUG_KMS("invalid pixel size so using unpacked 24bpp.\n"); | |
399 | ||
400 | val |= WINCON0_BPPMODE_24BPP_888; | |
401 | val |= WINCONx_WSWP; | |
402 | val |= WINCONx_BURSTLEN_16WORD; | |
403 | break; | |
404 | } | |
405 | ||
406 | DRM_DEBUG_KMS("bpp = %d\n", win_data->bpp); | |
407 | ||
408 | writel(val, ctx->regs + WINCON(win)); | |
409 | } | |
410 | ||
411 | static void fimd_win_set_colkey(struct device *dev, unsigned int win) | |
412 | { | |
413 | struct fimd_context *ctx = get_fimd_context(dev); | |
414 | unsigned int keycon0 = 0, keycon1 = 0; | |
415 | ||
416 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
417 | ||
418 | keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F | | |
419 | WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0); | |
420 | ||
421 | keycon1 = WxKEYCON1_COLVAL(0xffffffff); | |
422 | ||
423 | writel(keycon0, ctx->regs + WKEYCON0_BASE(win)); | |
424 | writel(keycon1, ctx->regs + WKEYCON1_BASE(win)); | |
425 | } | |
426 | ||
864ee9e6 | 427 | static void fimd_win_commit(struct device *dev, int zpos) |
1c248b7d ID |
428 | { |
429 | struct fimd_context *ctx = get_fimd_context(dev); | |
430 | struct fimd_win_data *win_data; | |
864ee9e6 | 431 | int win = zpos; |
1c248b7d ID |
432 | unsigned long val, alpha, size; |
433 | ||
434 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
435 | ||
e30d4bcf ID |
436 | if (ctx->suspended) |
437 | return; | |
438 | ||
864ee9e6 JS |
439 | if (win == DEFAULT_ZPOS) |
440 | win = ctx->default_win; | |
441 | ||
1c248b7d ID |
442 | if (win < 0 || win > WINDOWS_NR) |
443 | return; | |
444 | ||
445 | win_data = &ctx->win_data[win]; | |
446 | ||
447 | /* | |
448 | * SHADOWCON register is used for enabling timing. | |
449 | * | |
450 | * for example, once only width value of a register is set, | |
451 | * if the dma is started then fimd hardware could malfunction so | |
452 | * with protect window setting, the register fields with prefix '_F' | |
453 | * wouldn't be updated at vsync also but updated once unprotect window | |
454 | * is set. | |
455 | */ | |
456 | ||
457 | /* protect windows */ | |
458 | val = readl(ctx->regs + SHADOWCON); | |
459 | val |= SHADOWCON_WINx_PROTECT(win); | |
460 | writel(val, ctx->regs + SHADOWCON); | |
461 | ||
462 | /* buffer start address */ | |
2c871127 | 463 | val = (unsigned long)win_data->dma_addr; |
1c248b7d ID |
464 | writel(val, ctx->regs + VIDWx_BUF_START(win, 0)); |
465 | ||
466 | /* buffer end address */ | |
19c8b834 | 467 | size = win_data->fb_width * win_data->ovl_height * (win_data->bpp >> 3); |
2c871127 | 468 | val = (unsigned long)(win_data->dma_addr + size); |
1c248b7d ID |
469 | writel(val, ctx->regs + VIDWx_BUF_END(win, 0)); |
470 | ||
471 | DRM_DEBUG_KMS("start addr = 0x%lx, end addr = 0x%lx, size = 0x%lx\n", | |
2c871127 | 472 | (unsigned long)win_data->dma_addr, val, size); |
19c8b834 ID |
473 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", |
474 | win_data->ovl_width, win_data->ovl_height); | |
1c248b7d ID |
475 | |
476 | /* buffer size */ | |
477 | val = VIDW_BUF_SIZE_OFFSET(win_data->buf_offsize) | | |
478 | VIDW_BUF_SIZE_PAGEWIDTH(win_data->line_size); | |
479 | writel(val, ctx->regs + VIDWx_BUF_SIZE(win, 0)); | |
480 | ||
481 | /* OSD position */ | |
482 | val = VIDOSDxA_TOPLEFT_X(win_data->offset_x) | | |
483 | VIDOSDxA_TOPLEFT_Y(win_data->offset_y); | |
484 | writel(val, ctx->regs + VIDOSD_A(win)); | |
485 | ||
19c8b834 ID |
486 | val = VIDOSDxB_BOTRIGHT_X(win_data->offset_x + |
487 | win_data->ovl_width - 1) | | |
488 | VIDOSDxB_BOTRIGHT_Y(win_data->offset_y + | |
489 | win_data->ovl_height - 1); | |
1c248b7d ID |
490 | writel(val, ctx->regs + VIDOSD_B(win)); |
491 | ||
19c8b834 | 492 | DRM_DEBUG_KMS("osd pos: tx = %d, ty = %d, bx = %d, by = %d\n", |
1c248b7d | 493 | win_data->offset_x, win_data->offset_y, |
19c8b834 ID |
494 | win_data->offset_x + win_data->ovl_width - 1, |
495 | win_data->offset_y + win_data->ovl_height - 1); | |
1c248b7d ID |
496 | |
497 | /* hardware window 0 doesn't support alpha channel. */ | |
498 | if (win != 0) { | |
499 | /* OSD alpha */ | |
500 | alpha = VIDISD14C_ALPHA1_R(0xf) | | |
501 | VIDISD14C_ALPHA1_G(0xf) | | |
502 | VIDISD14C_ALPHA1_B(0xf); | |
503 | ||
504 | writel(alpha, ctx->regs + VIDOSD_C(win)); | |
505 | } | |
506 | ||
507 | /* OSD size */ | |
508 | if (win != 3 && win != 4) { | |
509 | u32 offset = VIDOSD_D(win); | |
510 | if (win == 0) | |
511 | offset = VIDOSD_C_SIZE_W0; | |
19c8b834 | 512 | val = win_data->ovl_width * win_data->ovl_height; |
1c248b7d ID |
513 | writel(val, ctx->regs + offset); |
514 | ||
515 | DRM_DEBUG_KMS("osd size = 0x%x\n", (unsigned int)val); | |
516 | } | |
517 | ||
518 | fimd_win_set_pixfmt(dev, win); | |
519 | ||
520 | /* hardware window 0 doesn't support color key. */ | |
521 | if (win != 0) | |
522 | fimd_win_set_colkey(dev, win); | |
523 | ||
ec05da95 ID |
524 | /* wincon */ |
525 | val = readl(ctx->regs + WINCON(win)); | |
526 | val |= WINCONx_ENWIN; | |
527 | writel(val, ctx->regs + WINCON(win)); | |
528 | ||
1c248b7d ID |
529 | /* Enable DMA channel and unprotect windows */ |
530 | val = readl(ctx->regs + SHADOWCON); | |
531 | val |= SHADOWCON_CHx_ENABLE(win); | |
532 | val &= ~SHADOWCON_WINx_PROTECT(win); | |
533 | writel(val, ctx->regs + SHADOWCON); | |
ec05da95 ID |
534 | |
535 | win_data->enabled = true; | |
1c248b7d ID |
536 | } |
537 | ||
864ee9e6 | 538 | static void fimd_win_disable(struct device *dev, int zpos) |
1c248b7d ID |
539 | { |
540 | struct fimd_context *ctx = get_fimd_context(dev); | |
ec05da95 | 541 | struct fimd_win_data *win_data; |
864ee9e6 | 542 | int win = zpos; |
1c248b7d ID |
543 | u32 val; |
544 | ||
545 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
546 | ||
864ee9e6 JS |
547 | if (win == DEFAULT_ZPOS) |
548 | win = ctx->default_win; | |
549 | ||
1c248b7d ID |
550 | if (win < 0 || win > WINDOWS_NR) |
551 | return; | |
552 | ||
ec05da95 ID |
553 | win_data = &ctx->win_data[win]; |
554 | ||
1c248b7d ID |
555 | /* protect windows */ |
556 | val = readl(ctx->regs + SHADOWCON); | |
557 | val |= SHADOWCON_WINx_PROTECT(win); | |
558 | writel(val, ctx->regs + SHADOWCON); | |
559 | ||
560 | /* wincon */ | |
561 | val = readl(ctx->regs + WINCON(win)); | |
562 | val &= ~WINCONx_ENWIN; | |
563 | writel(val, ctx->regs + WINCON(win)); | |
564 | ||
565 | /* unprotect windows */ | |
566 | val = readl(ctx->regs + SHADOWCON); | |
567 | val &= ~SHADOWCON_CHx_ENABLE(win); | |
568 | val &= ~SHADOWCON_WINx_PROTECT(win); | |
569 | writel(val, ctx->regs + SHADOWCON); | |
ec05da95 ID |
570 | |
571 | win_data->enabled = false; | |
1c248b7d ID |
572 | } |
573 | ||
574 | static struct exynos_drm_overlay_ops fimd_overlay_ops = { | |
575 | .mode_set = fimd_win_mode_set, | |
576 | .commit = fimd_win_commit, | |
577 | .disable = fimd_win_disable, | |
578 | }; | |
579 | ||
1c248b7d ID |
580 | static void fimd_finish_pageflip(struct drm_device *drm_dev, int crtc) |
581 | { | |
582 | struct exynos_drm_private *dev_priv = drm_dev->dev_private; | |
583 | struct drm_pending_vblank_event *e, *t; | |
584 | struct timeval now; | |
585 | unsigned long flags; | |
ccf4d883 | 586 | bool is_checked = false; |
1c248b7d ID |
587 | |
588 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
589 | ||
1c248b7d ID |
590 | list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list, |
591 | base.link) { | |
a88cab2b | 592 | /* if event's pipe isn't same as crtc then ignore it. */ |
ccf4d883 ID |
593 | if (crtc != e->pipe) |
594 | continue; | |
595 | ||
596 | is_checked = true; | |
597 | ||
1c248b7d ID |
598 | do_gettimeofday(&now); |
599 | e->event.sequence = 0; | |
600 | e->event.tv_sec = now.tv_sec; | |
601 | e->event.tv_usec = now.tv_usec; | |
602 | ||
603 | list_move_tail(&e->base.link, &e->base.file_priv->event_list); | |
604 | wake_up_interruptible(&e->base.file_priv->event_wait); | |
605 | } | |
606 | ||
ec05da95 | 607 | if (is_checked) { |
039129b0 ID |
608 | /* |
609 | * call drm_vblank_put only in case that drm_vblank_get was | |
610 | * called. | |
611 | */ | |
612 | if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0) | |
613 | drm_vblank_put(drm_dev, crtc); | |
1c248b7d | 614 | |
ec05da95 ID |
615 | /* |
616 | * don't off vblank if vblank_disable_allowed is 1, | |
617 | * because vblank would be off by timer handler. | |
618 | */ | |
619 | if (!drm_dev->vblank_disable_allowed) | |
620 | drm_vblank_off(drm_dev, crtc); | |
621 | } | |
622 | ||
1c248b7d ID |
623 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); |
624 | } | |
625 | ||
626 | static irqreturn_t fimd_irq_handler(int irq, void *dev_id) | |
627 | { | |
628 | struct fimd_context *ctx = (struct fimd_context *)dev_id; | |
629 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
630 | struct drm_device *drm_dev = subdrv->drm_dev; | |
1c248b7d ID |
631 | struct exynos_drm_manager *manager = &subdrv->manager; |
632 | u32 val; | |
633 | ||
634 | val = readl(ctx->regs + VIDINTCON1); | |
635 | ||
636 | if (val & VIDINTCON1_INT_FRAME) | |
637 | /* VSYNC interrupt */ | |
638 | writel(VIDINTCON1_INT_FRAME, ctx->regs + VIDINTCON1); | |
639 | ||
ec05da95 ID |
640 | /* check the crtc is detached already from encoder */ |
641 | if (manager->pipe < 0) | |
642 | goto out; | |
483b88f8 | 643 | |
1c248b7d ID |
644 | drm_handle_vblank(drm_dev, manager->pipe); |
645 | fimd_finish_pageflip(drm_dev, manager->pipe); | |
646 | ||
ec05da95 | 647 | out: |
1c248b7d ID |
648 | return IRQ_HANDLED; |
649 | } | |
650 | ||
41c24346 | 651 | static int fimd_subdrv_probe(struct drm_device *drm_dev, struct device *dev) |
1c248b7d | 652 | { |
1c248b7d ID |
653 | DRM_DEBUG_KMS("%s\n", __FILE__); |
654 | ||
655 | /* | |
656 | * enable drm irq mode. | |
657 | * - with irq_enabled = 1, we can use the vblank feature. | |
658 | * | |
659 | * P.S. note that we wouldn't use drm irq handler but | |
660 | * just specific driver own one instead because | |
661 | * drm framework supports only one irq handler. | |
662 | */ | |
663 | drm_dev->irq_enabled = 1; | |
664 | ||
ec05da95 ID |
665 | /* |
666 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled | |
667 | * by drm timer once a current process gives up ownership of | |
668 | * vblank event.(after drm_vblank_put function is called) | |
669 | */ | |
670 | drm_dev->vblank_disable_allowed = 1; | |
671 | ||
1c248b7d ID |
672 | return 0; |
673 | } | |
674 | ||
675 | static void fimd_subdrv_remove(struct drm_device *drm_dev) | |
676 | { | |
1c248b7d ID |
677 | DRM_DEBUG_KMS("%s\n", __FILE__); |
678 | ||
679 | /* TODO. */ | |
680 | } | |
681 | ||
682 | static int fimd_calc_clkdiv(struct fimd_context *ctx, | |
683 | struct fb_videomode *timing) | |
684 | { | |
685 | unsigned long clk = clk_get_rate(ctx->lcd_clk); | |
686 | u32 retrace; | |
687 | u32 clkdiv; | |
688 | u32 best_framerate = 0; | |
689 | u32 framerate; | |
690 | ||
691 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
692 | ||
693 | retrace = timing->left_margin + timing->hsync_len + | |
694 | timing->right_margin + timing->xres; | |
695 | retrace *= timing->upper_margin + timing->vsync_len + | |
696 | timing->lower_margin + timing->yres; | |
697 | ||
698 | /* default framerate is 60Hz */ | |
699 | if (!timing->refresh) | |
700 | timing->refresh = 60; | |
701 | ||
702 | clk /= retrace; | |
703 | ||
704 | for (clkdiv = 1; clkdiv < 0x100; clkdiv++) { | |
705 | int tmp; | |
706 | ||
707 | /* get best framerate */ | |
708 | framerate = clk / clkdiv; | |
709 | tmp = timing->refresh - framerate; | |
710 | if (tmp < 0) { | |
711 | best_framerate = framerate; | |
712 | continue; | |
713 | } else { | |
714 | if (!best_framerate) | |
715 | best_framerate = framerate; | |
716 | else if (tmp < (best_framerate - framerate)) | |
717 | best_framerate = framerate; | |
718 | break; | |
719 | } | |
720 | } | |
721 | ||
722 | return clkdiv; | |
723 | } | |
724 | ||
725 | static void fimd_clear_win(struct fimd_context *ctx, int win) | |
726 | { | |
727 | u32 val; | |
728 | ||
729 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
730 | ||
731 | writel(0, ctx->regs + WINCON(win)); | |
732 | writel(0, ctx->regs + VIDOSD_A(win)); | |
733 | writel(0, ctx->regs + VIDOSD_B(win)); | |
734 | writel(0, ctx->regs + VIDOSD_C(win)); | |
735 | ||
736 | if (win == 1 || win == 2) | |
737 | writel(0, ctx->regs + VIDOSD_D(win)); | |
738 | ||
739 | val = readl(ctx->regs + SHADOWCON); | |
740 | val &= ~SHADOWCON_WINx_PROTECT(win); | |
741 | writel(val, ctx->regs + SHADOWCON); | |
742 | } | |
743 | ||
373af0c0 ID |
744 | static int fimd_power_on(struct fimd_context *ctx, bool enable) |
745 | { | |
746 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
747 | struct device *dev = subdrv->manager.dev; | |
748 | ||
749 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
750 | ||
751 | if (enable != false && enable != true) | |
752 | return -EINVAL; | |
753 | ||
754 | if (enable) { | |
755 | int ret; | |
756 | ||
757 | ret = clk_enable(ctx->bus_clk); | |
758 | if (ret < 0) | |
759 | return ret; | |
760 | ||
761 | ret = clk_enable(ctx->lcd_clk); | |
762 | if (ret < 0) { | |
763 | clk_disable(ctx->bus_clk); | |
764 | return ret; | |
765 | } | |
766 | ||
767 | ctx->suspended = false; | |
768 | ||
769 | /* if vblank was enabled status, enable it again. */ | |
770 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
771 | fimd_enable_vblank(dev); | |
772 | ||
773 | fimd_apply(dev); | |
774 | } else { | |
775 | clk_disable(ctx->lcd_clk); | |
776 | clk_disable(ctx->bus_clk); | |
777 | ||
778 | ctx->suspended = true; | |
779 | } | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
1c248b7d ID |
784 | static int __devinit fimd_probe(struct platform_device *pdev) |
785 | { | |
786 | struct device *dev = &pdev->dev; | |
787 | struct fimd_context *ctx; | |
788 | struct exynos_drm_subdrv *subdrv; | |
789 | struct exynos_drm_fimd_pdata *pdata; | |
607c50d4 | 790 | struct exynos_drm_panel_info *panel; |
1c248b7d ID |
791 | struct resource *res; |
792 | int win; | |
793 | int ret = -EINVAL; | |
794 | ||
795 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
796 | ||
797 | pdata = pdev->dev.platform_data; | |
798 | if (!pdata) { | |
799 | dev_err(dev, "no platform data specified\n"); | |
800 | return -EINVAL; | |
801 | } | |
802 | ||
607c50d4 ECK |
803 | panel = &pdata->panel; |
804 | if (!panel) { | |
805 | dev_err(dev, "panel is null.\n"); | |
1c248b7d ID |
806 | return -EINVAL; |
807 | } | |
808 | ||
809 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); | |
810 | if (!ctx) | |
811 | return -ENOMEM; | |
812 | ||
813 | ctx->bus_clk = clk_get(dev, "fimd"); | |
814 | if (IS_ERR(ctx->bus_clk)) { | |
815 | dev_err(dev, "failed to get bus clock\n"); | |
816 | ret = PTR_ERR(ctx->bus_clk); | |
817 | goto err_clk_get; | |
818 | } | |
819 | ||
1c248b7d ID |
820 | ctx->lcd_clk = clk_get(dev, "sclk_fimd"); |
821 | if (IS_ERR(ctx->lcd_clk)) { | |
822 | dev_err(dev, "failed to get lcd clock\n"); | |
823 | ret = PTR_ERR(ctx->lcd_clk); | |
824 | goto err_bus_clk; | |
825 | } | |
826 | ||
1c248b7d ID |
827 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
828 | if (!res) { | |
829 | dev_err(dev, "failed to find registers\n"); | |
830 | ret = -ENOENT; | |
831 | goto err_clk; | |
832 | } | |
833 | ||
834 | ctx->regs_res = request_mem_region(res->start, resource_size(res), | |
835 | dev_name(dev)); | |
836 | if (!ctx->regs_res) { | |
837 | dev_err(dev, "failed to claim register region\n"); | |
838 | ret = -ENOENT; | |
839 | goto err_clk; | |
840 | } | |
841 | ||
842 | ctx->regs = ioremap(res->start, resource_size(res)); | |
843 | if (!ctx->regs) { | |
844 | dev_err(dev, "failed to map registers\n"); | |
845 | ret = -ENXIO; | |
846 | goto err_req_region_io; | |
847 | } | |
848 | ||
849 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
850 | if (!res) { | |
851 | dev_err(dev, "irq request failed.\n"); | |
852 | goto err_req_region_irq; | |
853 | } | |
854 | ||
855 | ctx->irq = res->start; | |
856 | ||
1c248b7d ID |
857 | ret = request_irq(ctx->irq, fimd_irq_handler, 0, "drm_fimd", ctx); |
858 | if (ret < 0) { | |
859 | dev_err(dev, "irq request failed.\n"); | |
860 | goto err_req_irq; | |
861 | } | |
862 | ||
1c248b7d ID |
863 | ctx->vidcon0 = pdata->vidcon0; |
864 | ctx->vidcon1 = pdata->vidcon1; | |
865 | ctx->default_win = pdata->default_win; | |
607c50d4 | 866 | ctx->panel = panel; |
1c248b7d | 867 | |
1c248b7d ID |
868 | subdrv = &ctx->subdrv; |
869 | ||
870 | subdrv->probe = fimd_subdrv_probe; | |
871 | subdrv->remove = fimd_subdrv_remove; | |
872 | subdrv->manager.pipe = -1; | |
873 | subdrv->manager.ops = &fimd_manager_ops; | |
874 | subdrv->manager.overlay_ops = &fimd_overlay_ops; | |
74ccc539 | 875 | subdrv->manager.display_ops = &fimd_display_ops; |
1c248b7d ID |
876 | subdrv->manager.dev = dev; |
877 | ||
c32b06ef ID |
878 | mutex_init(&ctx->lock); |
879 | ||
1c248b7d | 880 | platform_set_drvdata(pdev, ctx); |
c32b06ef | 881 | |
c32b06ef ID |
882 | pm_runtime_enable(dev); |
883 | pm_runtime_get_sync(dev); | |
884 | ||
0d8ce3ae MS |
885 | ctx->clkdiv = fimd_calc_clkdiv(ctx, &panel->timing); |
886 | panel->timing.pixclock = clk_get_rate(ctx->lcd_clk) / ctx->clkdiv; | |
887 | ||
888 | DRM_DEBUG_KMS("pixel clock = %d, clkdiv = %d\n", | |
889 | panel->timing.pixclock, ctx->clkdiv); | |
890 | ||
c32b06ef ID |
891 | for (win = 0; win < WINDOWS_NR; win++) |
892 | fimd_clear_win(ctx, win); | |
893 | ||
1c248b7d ID |
894 | exynos_drm_subdrv_register(subdrv); |
895 | ||
896 | return 0; | |
897 | ||
898 | err_req_irq: | |
899 | err_req_region_irq: | |
900 | iounmap(ctx->regs); | |
901 | ||
902 | err_req_region_io: | |
903 | release_resource(ctx->regs_res); | |
904 | kfree(ctx->regs_res); | |
905 | ||
906 | err_clk: | |
907 | clk_disable(ctx->lcd_clk); | |
908 | clk_put(ctx->lcd_clk); | |
909 | ||
910 | err_bus_clk: | |
911 | clk_disable(ctx->bus_clk); | |
912 | clk_put(ctx->bus_clk); | |
913 | ||
914 | err_clk_get: | |
915 | kfree(ctx); | |
916 | return ret; | |
917 | } | |
918 | ||
919 | static int __devexit fimd_remove(struct platform_device *pdev) | |
920 | { | |
cb91f6a0 | 921 | struct device *dev = &pdev->dev; |
1c248b7d ID |
922 | struct fimd_context *ctx = platform_get_drvdata(pdev); |
923 | ||
924 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
925 | ||
926 | exynos_drm_subdrv_unregister(&ctx->subdrv); | |
927 | ||
cb91f6a0 JS |
928 | if (ctx->suspended) |
929 | goto out; | |
930 | ||
1c248b7d ID |
931 | clk_disable(ctx->lcd_clk); |
932 | clk_disable(ctx->bus_clk); | |
cb91f6a0 JS |
933 | |
934 | pm_runtime_set_suspended(dev); | |
935 | pm_runtime_put_sync(dev); | |
936 | ||
937 | out: | |
938 | pm_runtime_disable(dev); | |
939 | ||
1c248b7d ID |
940 | clk_put(ctx->lcd_clk); |
941 | clk_put(ctx->bus_clk); | |
942 | ||
943 | iounmap(ctx->regs); | |
944 | release_resource(ctx->regs_res); | |
945 | kfree(ctx->regs_res); | |
946 | free_irq(ctx->irq, ctx); | |
947 | ||
948 | kfree(ctx); | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
e30d4bcf ID |
953 | #ifdef CONFIG_PM_SLEEP |
954 | static int fimd_suspend(struct device *dev) | |
955 | { | |
373af0c0 | 956 | struct fimd_context *ctx = get_fimd_context(dev); |
e30d4bcf ID |
957 | |
958 | if (pm_runtime_suspended(dev)) | |
959 | return 0; | |
960 | ||
373af0c0 ID |
961 | /* |
962 | * do not use pm_runtime_suspend(). if pm_runtime_suspend() is | |
963 | * called here, an error would be returned by that interface | |
964 | * because the usage_count of pm runtime is more than 1. | |
965 | */ | |
966 | return fimd_power_on(ctx, false); | |
e30d4bcf ID |
967 | } |
968 | ||
969 | static int fimd_resume(struct device *dev) | |
970 | { | |
373af0c0 | 971 | struct fimd_context *ctx = get_fimd_context(dev); |
e30d4bcf | 972 | |
373af0c0 ID |
973 | /* |
974 | * if entered to sleep when lcd panel was on, the usage_count | |
975 | * of pm runtime would still be 1 so in this case, fimd driver | |
976 | * should be on directly not drawing on pm runtime interface. | |
977 | */ | |
978 | if (!pm_runtime_suspended(dev)) | |
979 | return fimd_power_on(ctx, true); | |
e30d4bcf | 980 | |
e30d4bcf ID |
981 | return 0; |
982 | } | |
983 | #endif | |
984 | ||
cb91f6a0 JS |
985 | #ifdef CONFIG_PM_RUNTIME |
986 | static int fimd_runtime_suspend(struct device *dev) | |
987 | { | |
988 | struct fimd_context *ctx = get_fimd_context(dev); | |
989 | ||
990 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
991 | ||
373af0c0 | 992 | return fimd_power_on(ctx, false); |
cb91f6a0 JS |
993 | } |
994 | ||
995 | static int fimd_runtime_resume(struct device *dev) | |
996 | { | |
997 | struct fimd_context *ctx = get_fimd_context(dev); | |
cb91f6a0 JS |
998 | |
999 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
1000 | ||
373af0c0 | 1001 | return fimd_power_on(ctx, true); |
cb91f6a0 JS |
1002 | } |
1003 | #endif | |
1004 | ||
1005 | static const struct dev_pm_ops fimd_pm_ops = { | |
e30d4bcf | 1006 | SET_SYSTEM_SLEEP_PM_OPS(fimd_suspend, fimd_resume) |
cb91f6a0 JS |
1007 | SET_RUNTIME_PM_OPS(fimd_runtime_suspend, fimd_runtime_resume, NULL) |
1008 | }; | |
1009 | ||
132a5b91 | 1010 | struct platform_driver fimd_driver = { |
1c248b7d ID |
1011 | .probe = fimd_probe, |
1012 | .remove = __devexit_p(fimd_remove), | |
1013 | .driver = { | |
1014 | .name = "exynos4-fb", | |
1015 | .owner = THIS_MODULE, | |
cb91f6a0 | 1016 | .pm = &fimd_pm_ops, |
1c248b7d ID |
1017 | }, |
1018 | }; |