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1 | /* |
2 | * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd | |
3 | * Zheng Yang <zhengyang@rock-chips.com> | |
4 | * Yakir Yang <ykk@rock-chips.com> | |
5 | * | |
6 | * This software is licensed under the terms of the GNU General Public | |
7 | * License version 2, as published by the Free Software Foundation, and | |
8 | * may be copied, distributed, and modified under those terms. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | */ | |
15 | ||
16 | #include <linux/irq.h> | |
17 | #include <linux/clk.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/hdmi.h> | |
21 | #include <linux/mfd/syscon.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/mutex.h> | |
24 | #include <linux/of_device.h> | |
25 | ||
26 | #include <drm/drm_of.h> | |
27 | #include <drm/drmP.h> | |
28 | #include <drm/drm_atomic_helper.h> | |
29 | #include <drm/drm_crtc_helper.h> | |
30 | #include <drm/drm_edid.h> | |
31 | ||
32 | #include "rockchip_drm_drv.h" | |
33 | #include "rockchip_drm_vop.h" | |
34 | ||
35 | #include "inno_hdmi.h" | |
36 | ||
37 | #define to_inno_hdmi(x) container_of(x, struct inno_hdmi, x) | |
38 | ||
39 | struct hdmi_data_info { | |
40 | int vic; | |
41 | bool sink_is_hdmi; | |
42 | bool sink_has_audio; | |
43 | unsigned int enc_in_format; | |
44 | unsigned int enc_out_format; | |
45 | unsigned int colorimetry; | |
46 | }; | |
47 | ||
48 | struct inno_hdmi_i2c { | |
49 | struct i2c_adapter adap; | |
50 | ||
51 | u8 ddc_addr; | |
52 | u8 segment_addr; | |
53 | ||
54 | struct mutex lock; | |
55 | struct completion cmp; | |
56 | }; | |
57 | ||
58 | struct inno_hdmi { | |
59 | struct device *dev; | |
60 | struct drm_device *drm_dev; | |
61 | ||
62 | int irq; | |
63 | struct clk *pclk; | |
64 | void __iomem *regs; | |
65 | ||
66 | struct drm_connector connector; | |
67 | struct drm_encoder encoder; | |
68 | ||
69 | struct inno_hdmi_i2c *i2c; | |
70 | struct i2c_adapter *ddc; | |
71 | ||
72 | unsigned int tmds_rate; | |
73 | ||
74 | struct hdmi_data_info hdmi_data; | |
75 | struct drm_display_mode previous_mode; | |
76 | }; | |
77 | ||
78 | enum { | |
79 | CSC_ITU601_16_235_TO_RGB_0_255_8BIT, | |
80 | CSC_ITU601_0_255_TO_RGB_0_255_8BIT, | |
81 | CSC_ITU709_16_235_TO_RGB_0_255_8BIT, | |
82 | CSC_RGB_0_255_TO_ITU601_16_235_8BIT, | |
83 | CSC_RGB_0_255_TO_ITU709_16_235_8BIT, | |
84 | CSC_RGB_0_255_TO_RGB_16_235_8BIT, | |
85 | }; | |
86 | ||
87 | static const char coeff_csc[][24] = { | |
88 | /* | |
89 | * YUV2RGB:601 SD mode(Y[16:235], UV[16:240], RGB[0:255]): | |
90 | * R = 1.164*Y + 1.596*V - 204 | |
91 | * G = 1.164*Y - 0.391*U - 0.813*V + 154 | |
92 | * B = 1.164*Y + 2.018*U - 258 | |
93 | */ | |
94 | { | |
95 | 0x04, 0xa7, 0x00, 0x00, 0x06, 0x62, 0x02, 0xcc, | |
96 | 0x04, 0xa7, 0x11, 0x90, 0x13, 0x40, 0x00, 0x9a, | |
97 | 0x04, 0xa7, 0x08, 0x12, 0x00, 0x00, 0x03, 0x02 | |
98 | }, | |
99 | /* | |
100 | * YUV2RGB:601 SD mode(YUV[0:255],RGB[0:255]): | |
101 | * R = Y + 1.402*V - 248 | |
102 | * G = Y - 0.344*U - 0.714*V + 135 | |
103 | * B = Y + 1.772*U - 227 | |
104 | */ | |
105 | { | |
106 | 0x04, 0x00, 0x00, 0x00, 0x05, 0x9b, 0x02, 0xf8, | |
107 | 0x04, 0x00, 0x11, 0x60, 0x12, 0xdb, 0x00, 0x87, | |
108 | 0x04, 0x00, 0x07, 0x16, 0x00, 0x00, 0x02, 0xe3 | |
109 | }, | |
110 | /* | |
111 | * YUV2RGB:709 HD mode(Y[16:235],UV[16:240],RGB[0:255]): | |
112 | * R = 1.164*Y + 1.793*V - 248 | |
113 | * G = 1.164*Y - 0.213*U - 0.534*V + 77 | |
114 | * B = 1.164*Y + 2.115*U - 289 | |
115 | */ | |
116 | { | |
117 | 0x04, 0xa7, 0x00, 0x00, 0x07, 0x2c, 0x02, 0xf8, | |
118 | 0x04, 0xa7, 0x10, 0xda, 0x12, 0x22, 0x00, 0x4d, | |
119 | 0x04, 0xa7, 0x08, 0x74, 0x00, 0x00, 0x03, 0x21 | |
120 | }, | |
121 | ||
122 | /* | |
123 | * RGB2YUV:601 SD mode: | |
124 | * Cb = -0.291G - 0.148R + 0.439B + 128 | |
125 | * Y = 0.504G + 0.257R + 0.098B + 16 | |
126 | * Cr = -0.368G + 0.439R - 0.071B + 128 | |
127 | */ | |
128 | { | |
129 | 0x11, 0x5f, 0x01, 0x82, 0x10, 0x23, 0x00, 0x80, | |
130 | 0x02, 0x1c, 0x00, 0xa1, 0x00, 0x36, 0x00, 0x1e, | |
131 | 0x11, 0x29, 0x10, 0x59, 0x01, 0x82, 0x00, 0x80 | |
132 | }, | |
133 | /* | |
134 | * RGB2YUV:709 HD mode: | |
135 | * Cb = - 0.338G - 0.101R + 0.439B + 128 | |
136 | * Y = 0.614G + 0.183R + 0.062B + 16 | |
137 | * Cr = - 0.399G + 0.439R - 0.040B + 128 | |
138 | */ | |
139 | { | |
140 | 0x11, 0x98, 0x01, 0xc1, 0x10, 0x28, 0x00, 0x80, | |
141 | 0x02, 0x74, 0x00, 0xbb, 0x00, 0x3f, 0x00, 0x10, | |
142 | 0x11, 0x5a, 0x10, 0x67, 0x01, 0xc1, 0x00, 0x80 | |
143 | }, | |
144 | /* | |
145 | * RGB[0:255]2RGB[16:235]: | |
146 | * R' = R x (235-16)/255 + 16; | |
147 | * G' = G x (235-16)/255 + 16; | |
148 | * B' = B x (235-16)/255 + 16; | |
149 | */ | |
150 | { | |
151 | 0x00, 0x00, 0x03, 0x6F, 0x00, 0x00, 0x00, 0x10, | |
152 | 0x03, 0x6F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, | |
153 | 0x00, 0x00, 0x00, 0x00, 0x03, 0x6F, 0x00, 0x10 | |
154 | }, | |
155 | }; | |
156 | ||
157 | static inline u8 hdmi_readb(struct inno_hdmi *hdmi, u16 offset) | |
158 | { | |
159 | return readl_relaxed(hdmi->regs + (offset) * 0x04); | |
160 | } | |
161 | ||
162 | static inline void hdmi_writeb(struct inno_hdmi *hdmi, u16 offset, u32 val) | |
163 | { | |
164 | writel_relaxed(val, hdmi->regs + (offset) * 0x04); | |
165 | } | |
166 | ||
167 | static inline void hdmi_modb(struct inno_hdmi *hdmi, u16 offset, | |
168 | u32 msk, u32 val) | |
169 | { | |
170 | u8 temp = hdmi_readb(hdmi, offset) & ~msk; | |
171 | ||
172 | temp |= val & msk; | |
173 | hdmi_writeb(hdmi, offset, temp); | |
174 | } | |
175 | ||
176 | static void inno_hdmi_i2c_init(struct inno_hdmi *hdmi) | |
177 | { | |
178 | int ddc_bus_freq; | |
179 | ||
180 | ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE; | |
181 | ||
182 | hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF); | |
183 | hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF); | |
184 | ||
185 | /* Clear the EDID interrupt flag and mute the interrupt */ | |
186 | hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); | |
187 | hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); | |
188 | } | |
189 | ||
190 | static void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable) | |
191 | { | |
192 | if (enable) | |
193 | hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON); | |
194 | else | |
195 | hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF); | |
196 | } | |
197 | ||
198 | static void inno_hdmi_set_pwr_mode(struct inno_hdmi *hdmi, int mode) | |
199 | { | |
200 | switch (mode) { | |
201 | case NORMAL: | |
202 | inno_hdmi_sys_power(hdmi, false); | |
203 | ||
204 | hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x6f); | |
205 | hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0xbb); | |
206 | ||
207 | hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15); | |
208 | hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14); | |
209 | hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10); | |
210 | hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f); | |
211 | hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00); | |
212 | hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01); | |
213 | ||
214 | inno_hdmi_sys_power(hdmi, true); | |
215 | break; | |
216 | ||
217 | case LOWER_PWR: | |
218 | inno_hdmi_sys_power(hdmi, false); | |
219 | hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00); | |
220 | hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00); | |
221 | hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00); | |
222 | hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15); | |
223 | ||
224 | break; | |
225 | ||
226 | default: | |
227 | dev_err(hdmi->dev, "Unknown power mode %d\n", mode); | |
228 | } | |
229 | } | |
230 | ||
231 | static void inno_hdmi_reset(struct inno_hdmi *hdmi) | |
232 | { | |
233 | u32 val; | |
234 | u32 msk; | |
235 | ||
236 | hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_DIGITAL, v_NOT_RST_DIGITAL); | |
237 | udelay(100); | |
238 | ||
239 | hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_ANALOG, v_NOT_RST_ANALOG); | |
240 | udelay(100); | |
241 | ||
242 | msk = m_REG_CLK_INV | m_REG_CLK_SOURCE | m_POWER | m_INT_POL; | |
243 | val = v_REG_CLK_INV | v_REG_CLK_SOURCE_SYS | v_PWR_ON | v_INT_POL_HIGH; | |
244 | hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val); | |
245 | ||
246 | inno_hdmi_set_pwr_mode(hdmi, NORMAL); | |
247 | } | |
248 | ||
249 | static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, int setup_rc, | |
250 | union hdmi_infoframe *frame, u32 frame_index, | |
251 | u32 mask, u32 disable, u32 enable) | |
252 | { | |
253 | if (mask) | |
254 | hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable); | |
255 | ||
256 | hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index); | |
257 | ||
258 | if (setup_rc >= 0) { | |
259 | u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE]; | |
260 | ssize_t rc, i; | |
261 | ||
262 | rc = hdmi_infoframe_pack(frame, packed_frame, | |
263 | sizeof(packed_frame)); | |
264 | if (rc < 0) | |
265 | return rc; | |
266 | ||
267 | for (i = 0; i < rc; i++) | |
268 | hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i, | |
269 | packed_frame[i]); | |
270 | ||
271 | if (mask) | |
272 | hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable); | |
273 | } | |
274 | ||
275 | return setup_rc; | |
276 | } | |
277 | ||
278 | static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi, | |
279 | struct drm_display_mode *mode) | |
280 | { | |
281 | union hdmi_infoframe frame; | |
282 | int rc; | |
283 | ||
284 | rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi, | |
285 | mode); | |
286 | ||
287 | return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_VSI, | |
288 | m_PACKET_VSI_EN, v_PACKET_VSI_EN(0), v_PACKET_VSI_EN(1)); | |
289 | } | |
290 | ||
291 | static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, | |
292 | struct drm_display_mode *mode) | |
293 | { | |
294 | union hdmi_infoframe frame; | |
295 | int rc; | |
296 | ||
297 | rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode); | |
298 | ||
299 | if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444) | |
300 | frame.avi.colorspace = HDMI_COLORSPACE_YUV444; | |
301 | else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422) | |
302 | frame.avi.colorspace = HDMI_COLORSPACE_YUV422; | |
303 | else | |
304 | frame.avi.colorspace = HDMI_COLORSPACE_RGB; | |
305 | ||
306 | return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0); | |
307 | } | |
308 | ||
309 | static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi) | |
310 | { | |
311 | struct hdmi_data_info *data = &hdmi->hdmi_data; | |
312 | int c0_c2_change = 0; | |
313 | int csc_enable = 0; | |
314 | int csc_mode = 0; | |
315 | int auto_csc = 0; | |
316 | int value; | |
317 | int i; | |
318 | ||
319 | /* Input video mode is SDR RGB24bit, data enable signal from external */ | |
320 | hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL1, v_DE_EXTERNAL | | |
321 | v_VIDEO_INPUT_FORMAT(VIDEO_INPUT_SDR_RGB444)); | |
322 | ||
323 | /* Input color hardcode to RGB, and output color hardcode to RGB888 */ | |
324 | value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) | | |
325 | v_VIDEO_OUTPUT_COLOR(0) | | |
326 | v_VIDEO_INPUT_CSP(0); | |
327 | hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value); | |
328 | ||
329 | if (data->enc_in_format == data->enc_out_format) { | |
330 | if ((data->enc_in_format == HDMI_COLORSPACE_RGB) || | |
331 | (data->enc_in_format >= HDMI_COLORSPACE_YUV444)) { | |
332 | value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1); | |
333 | hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value); | |
334 | ||
335 | hdmi_modb(hdmi, HDMI_VIDEO_CONTRL, | |
336 | m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP, | |
337 | v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) | | |
338 | v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE)); | |
339 | return 0; | |
340 | } | |
341 | } | |
342 | ||
343 | if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) { | |
344 | if ((data->enc_in_format == HDMI_COLORSPACE_RGB) && | |
345 | (data->enc_out_format == HDMI_COLORSPACE_YUV444)) { | |
346 | csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT; | |
347 | auto_csc = AUTO_CSC_DISABLE; | |
348 | c0_c2_change = C0_C2_CHANGE_DISABLE; | |
349 | csc_enable = v_CSC_ENABLE; | |
350 | } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) && | |
351 | (data->enc_out_format == HDMI_COLORSPACE_RGB)) { | |
352 | csc_mode = CSC_ITU601_16_235_TO_RGB_0_255_8BIT; | |
353 | auto_csc = AUTO_CSC_ENABLE; | |
354 | c0_c2_change = C0_C2_CHANGE_DISABLE; | |
355 | csc_enable = v_CSC_DISABLE; | |
356 | } | |
357 | } else { | |
358 | if ((data->enc_in_format == HDMI_COLORSPACE_RGB) && | |
359 | (data->enc_out_format == HDMI_COLORSPACE_YUV444)) { | |
360 | csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT; | |
361 | auto_csc = AUTO_CSC_DISABLE; | |
362 | c0_c2_change = C0_C2_CHANGE_DISABLE; | |
363 | csc_enable = v_CSC_ENABLE; | |
364 | } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) && | |
365 | (data->enc_out_format == HDMI_COLORSPACE_RGB)) { | |
366 | csc_mode = CSC_ITU709_16_235_TO_RGB_0_255_8BIT; | |
367 | auto_csc = AUTO_CSC_ENABLE; | |
368 | c0_c2_change = C0_C2_CHANGE_DISABLE; | |
369 | csc_enable = v_CSC_DISABLE; | |
370 | } | |
371 | } | |
372 | ||
373 | for (i = 0; i < 24; i++) | |
374 | hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i, | |
375 | coeff_csc[csc_mode][i]); | |
376 | ||
377 | value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1); | |
378 | hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value); | |
379 | hdmi_modb(hdmi, HDMI_VIDEO_CONTRL, m_VIDEO_AUTO_CSC | | |
380 | m_VIDEO_C0_C2_SWAP, v_VIDEO_AUTO_CSC(auto_csc) | | |
381 | v_VIDEO_C0_C2_SWAP(c0_c2_change)); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi, | |
387 | struct drm_display_mode *mode) | |
388 | { | |
389 | int value; | |
390 | ||
391 | /* Set detail external video timing polarity and interlace mode */ | |
392 | value = v_EXTERANL_VIDEO(1); | |
393 | value |= mode->flags & DRM_MODE_FLAG_PHSYNC ? | |
394 | v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0); | |
395 | value |= mode->flags & DRM_MODE_FLAG_PVSYNC ? | |
396 | v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0); | |
397 | value |= mode->flags & DRM_MODE_FLAG_INTERLACE ? | |
398 | v_INETLACE(1) : v_INETLACE(0); | |
399 | hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value); | |
400 | ||
401 | /* Set detail external video timing */ | |
402 | value = mode->htotal; | |
403 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF); | |
404 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF); | |
405 | ||
406 | value = mode->htotal - mode->hdisplay; | |
407 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF); | |
408 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF); | |
409 | ||
410 | value = mode->hsync_start - mode->hdisplay; | |
411 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF); | |
412 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF); | |
413 | ||
414 | value = mode->hsync_end - mode->hsync_start; | |
415 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF); | |
416 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF); | |
417 | ||
418 | value = mode->vtotal; | |
419 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF); | |
420 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF); | |
421 | ||
422 | value = mode->vtotal - mode->vdisplay; | |
423 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF); | |
424 | ||
425 | value = mode->vsync_start - mode->vdisplay; | |
426 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF); | |
427 | ||
428 | value = mode->vsync_end - mode->vsync_start; | |
429 | hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF); | |
430 | ||
431 | hdmi_writeb(hdmi, HDMI_PHY_PRE_DIV_RATIO, 0x1e); | |
432 | hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c); | |
433 | hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01); | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
438 | static int inno_hdmi_setup(struct inno_hdmi *hdmi, | |
439 | struct drm_display_mode *mode) | |
440 | { | |
441 | hdmi->hdmi_data.vic = drm_match_cea_mode(mode); | |
442 | ||
443 | hdmi->hdmi_data.enc_in_format = HDMI_COLORSPACE_RGB; | |
444 | hdmi->hdmi_data.enc_out_format = HDMI_COLORSPACE_RGB; | |
445 | ||
446 | if ((hdmi->hdmi_data.vic == 6) || (hdmi->hdmi_data.vic == 7) || | |
447 | (hdmi->hdmi_data.vic == 21) || (hdmi->hdmi_data.vic == 22) || | |
448 | (hdmi->hdmi_data.vic == 2) || (hdmi->hdmi_data.vic == 3) || | |
449 | (hdmi->hdmi_data.vic == 17) || (hdmi->hdmi_data.vic == 18)) | |
450 | hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601; | |
451 | else | |
452 | hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709; | |
453 | ||
454 | /* Mute video and audio output */ | |
455 | hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK, | |
456 | v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1)); | |
457 | ||
458 | /* Set HDMI Mode */ | |
459 | hdmi_writeb(hdmi, HDMI_HDCP_CTRL, | |
460 | v_HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi)); | |
461 | ||
462 | inno_hdmi_config_video_timing(hdmi, mode); | |
463 | ||
464 | inno_hdmi_config_video_csc(hdmi); | |
465 | ||
466 | if (hdmi->hdmi_data.sink_is_hdmi) { | |
467 | inno_hdmi_config_video_avi(hdmi, mode); | |
468 | inno_hdmi_config_video_vsi(hdmi, mode); | |
469 | } | |
470 | ||
471 | /* | |
472 | * When IP controller have configured to an accurate video | |
473 | * timing, then the TMDS clock source would be switched to | |
474 | * DCLK_LCDC, so we need to init the TMDS rate to mode pixel | |
475 | * clock rate, and reconfigure the DDC clock. | |
476 | */ | |
477 | hdmi->tmds_rate = mode->clock * 1000; | |
478 | inno_hdmi_i2c_init(hdmi); | |
479 | ||
480 | /* Unmute video and audio output */ | |
481 | hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK, | |
482 | v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0)); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static void inno_hdmi_encoder_mode_set(struct drm_encoder *encoder, | |
488 | struct drm_display_mode *mode, | |
489 | struct drm_display_mode *adj_mode) | |
490 | { | |
491 | struct inno_hdmi *hdmi = to_inno_hdmi(encoder); | |
492 | ||
493 | inno_hdmi_setup(hdmi, adj_mode); | |
494 | ||
495 | /* Store the display mode for plugin/DPMS poweron events */ | |
496 | memcpy(&hdmi->previous_mode, adj_mode, sizeof(hdmi->previous_mode)); | |
497 | } | |
498 | ||
499 | static void inno_hdmi_encoder_enable(struct drm_encoder *encoder) | |
500 | { | |
501 | struct inno_hdmi *hdmi = to_inno_hdmi(encoder); | |
502 | ||
412d4ae6 YY |
503 | inno_hdmi_set_pwr_mode(hdmi, NORMAL); |
504 | } | |
505 | ||
506 | static void inno_hdmi_encoder_disable(struct drm_encoder *encoder) | |
507 | { | |
508 | struct inno_hdmi *hdmi = to_inno_hdmi(encoder); | |
509 | ||
510 | inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR); | |
511 | } | |
512 | ||
513 | static bool inno_hdmi_encoder_mode_fixup(struct drm_encoder *encoder, | |
514 | const struct drm_display_mode *mode, | |
515 | struct drm_display_mode *adj_mode) | |
516 | { | |
517 | return true; | |
518 | } | |
519 | ||
4e257d9e MY |
520 | static int |
521 | inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder, | |
522 | struct drm_crtc_state *crtc_state, | |
523 | struct drm_connector_state *conn_state) | |
524 | { | |
525 | struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); | |
526 | ||
527 | s->output_mode = ROCKCHIP_OUT_MODE_P888; | |
528 | s->output_type = DRM_MODE_CONNECTOR_HDMIA; | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
412d4ae6 YY |
533 | static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = { |
534 | .enable = inno_hdmi_encoder_enable, | |
535 | .disable = inno_hdmi_encoder_disable, | |
536 | .mode_fixup = inno_hdmi_encoder_mode_fixup, | |
537 | .mode_set = inno_hdmi_encoder_mode_set, | |
4e257d9e | 538 | .atomic_check = inno_hdmi_encoder_atomic_check, |
412d4ae6 YY |
539 | }; |
540 | ||
541 | static struct drm_encoder_funcs inno_hdmi_encoder_funcs = { | |
542 | .destroy = drm_encoder_cleanup, | |
543 | }; | |
544 | ||
545 | static enum drm_connector_status | |
546 | inno_hdmi_connector_detect(struct drm_connector *connector, bool force) | |
547 | { | |
548 | struct inno_hdmi *hdmi = to_inno_hdmi(connector); | |
549 | ||
550 | return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ? | |
551 | connector_status_connected : connector_status_disconnected; | |
552 | } | |
553 | ||
554 | static int inno_hdmi_connector_get_modes(struct drm_connector *connector) | |
555 | { | |
556 | struct inno_hdmi *hdmi = to_inno_hdmi(connector); | |
557 | struct edid *edid; | |
558 | int ret = 0; | |
559 | ||
560 | if (!hdmi->ddc) | |
561 | return 0; | |
562 | ||
563 | edid = drm_get_edid(connector, hdmi->ddc); | |
564 | if (edid) { | |
565 | hdmi->hdmi_data.sink_is_hdmi = drm_detect_hdmi_monitor(edid); | |
566 | hdmi->hdmi_data.sink_has_audio = drm_detect_monitor_audio(edid); | |
567 | drm_mode_connector_update_edid_property(connector, edid); | |
568 | ret = drm_add_edid_modes(connector, edid); | |
569 | kfree(edid); | |
570 | } | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | static enum drm_mode_status | |
576 | inno_hdmi_connector_mode_valid(struct drm_connector *connector, | |
577 | struct drm_display_mode *mode) | |
578 | { | |
579 | return MODE_OK; | |
580 | } | |
581 | ||
412d4ae6 YY |
582 | static int |
583 | inno_hdmi_probe_single_connector_modes(struct drm_connector *connector, | |
584 | uint32_t maxX, uint32_t maxY) | |
585 | { | |
586 | return drm_helper_probe_single_connector_modes(connector, 1920, 1080); | |
587 | } | |
588 | ||
589 | static void inno_hdmi_connector_destroy(struct drm_connector *connector) | |
590 | { | |
591 | drm_connector_unregister(connector); | |
592 | drm_connector_cleanup(connector); | |
593 | } | |
594 | ||
595 | static struct drm_connector_funcs inno_hdmi_connector_funcs = { | |
596 | .dpms = drm_atomic_helper_connector_dpms, | |
597 | .fill_modes = inno_hdmi_probe_single_connector_modes, | |
598 | .detect = inno_hdmi_connector_detect, | |
599 | .destroy = inno_hdmi_connector_destroy, | |
600 | .reset = drm_atomic_helper_connector_reset, | |
601 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, | |
602 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
603 | }; | |
604 | ||
605 | static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = { | |
606 | .get_modes = inno_hdmi_connector_get_modes, | |
607 | .mode_valid = inno_hdmi_connector_mode_valid, | |
412d4ae6 YY |
608 | }; |
609 | ||
610 | static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi) | |
611 | { | |
612 | struct drm_encoder *encoder = &hdmi->encoder; | |
613 | struct device *dev = hdmi->dev; | |
614 | ||
615 | encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); | |
616 | ||
617 | /* | |
618 | * If we failed to find the CRTC(s) which this encoder is | |
619 | * supposed to be connected to, it's because the CRTC has | |
620 | * not been registered yet. Defer probing, and hope that | |
621 | * the required CRTC is added later. | |
622 | */ | |
623 | if (encoder->possible_crtcs == 0) | |
624 | return -EPROBE_DEFER; | |
625 | ||
626 | drm_encoder_helper_add(encoder, &inno_hdmi_encoder_helper_funcs); | |
627 | drm_encoder_init(drm, encoder, &inno_hdmi_encoder_funcs, | |
628 | DRM_MODE_ENCODER_TMDS, NULL); | |
629 | ||
630 | hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; | |
631 | ||
632 | drm_connector_helper_add(&hdmi->connector, | |
633 | &inno_hdmi_connector_helper_funcs); | |
634 | drm_connector_init(drm, &hdmi->connector, &inno_hdmi_connector_funcs, | |
635 | DRM_MODE_CONNECTOR_HDMIA); | |
636 | ||
637 | drm_mode_connector_attach_encoder(&hdmi->connector, encoder); | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
642 | static irqreturn_t inno_hdmi_i2c_irq(struct inno_hdmi *hdmi) | |
643 | { | |
644 | struct inno_hdmi_i2c *i2c = hdmi->i2c; | |
645 | u8 stat; | |
646 | ||
647 | stat = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1); | |
648 | if (!(stat & m_INT_EDID_READY)) | |
649 | return IRQ_NONE; | |
650 | ||
651 | /* Clear HDMI EDID interrupt flag */ | |
652 | hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); | |
653 | ||
654 | complete(&i2c->cmp); | |
655 | ||
656 | return IRQ_HANDLED; | |
657 | } | |
658 | ||
659 | static irqreturn_t inno_hdmi_hardirq(int irq, void *dev_id) | |
660 | { | |
661 | struct inno_hdmi *hdmi = dev_id; | |
662 | irqreturn_t ret = IRQ_NONE; | |
663 | u8 interrupt; | |
664 | ||
665 | if (hdmi->i2c) | |
666 | ret = inno_hdmi_i2c_irq(hdmi); | |
667 | ||
668 | interrupt = hdmi_readb(hdmi, HDMI_STATUS); | |
669 | if (interrupt & m_INT_HOTPLUG) { | |
670 | hdmi_modb(hdmi, HDMI_STATUS, m_INT_HOTPLUG, m_INT_HOTPLUG); | |
671 | ret = IRQ_WAKE_THREAD; | |
672 | } | |
673 | ||
674 | return ret; | |
675 | } | |
676 | ||
677 | static irqreturn_t inno_hdmi_irq(int irq, void *dev_id) | |
678 | { | |
679 | struct inno_hdmi *hdmi = dev_id; | |
680 | ||
681 | drm_helper_hpd_irq_event(hdmi->connector.dev); | |
682 | ||
683 | return IRQ_HANDLED; | |
684 | } | |
685 | ||
686 | static int inno_hdmi_i2c_read(struct inno_hdmi *hdmi, struct i2c_msg *msgs) | |
687 | { | |
688 | int length = msgs->len; | |
689 | u8 *buf = msgs->buf; | |
690 | int ret; | |
691 | ||
692 | ret = wait_for_completion_timeout(&hdmi->i2c->cmp, HZ / 10); | |
693 | if (!ret) | |
694 | return -EAGAIN; | |
695 | ||
696 | while (length--) | |
697 | *buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR); | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | static int inno_hdmi_i2c_write(struct inno_hdmi *hdmi, struct i2c_msg *msgs) | |
703 | { | |
704 | /* | |
705 | * The DDC module only support read EDID message, so | |
706 | * we assume that each word write to this i2c adapter | |
707 | * should be the offset of EDID word address. | |
708 | */ | |
709 | if ((msgs->len != 1) || | |
710 | ((msgs->addr != DDC_ADDR) && (msgs->addr != DDC_SEGMENT_ADDR))) | |
711 | return -EINVAL; | |
712 | ||
713 | reinit_completion(&hdmi->i2c->cmp); | |
714 | ||
715 | if (msgs->addr == DDC_SEGMENT_ADDR) | |
716 | hdmi->i2c->segment_addr = msgs->buf[0]; | |
717 | if (msgs->addr == DDC_ADDR) | |
718 | hdmi->i2c->ddc_addr = msgs->buf[0]; | |
719 | ||
720 | /* Set edid fifo first addr */ | |
721 | hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00); | |
722 | ||
723 | /* Set edid word address 0x00/0x80 */ | |
724 | hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr); | |
725 | ||
726 | /* Set edid segment pointer */ | |
727 | hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr); | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | static int inno_hdmi_i2c_xfer(struct i2c_adapter *adap, | |
733 | struct i2c_msg *msgs, int num) | |
734 | { | |
735 | struct inno_hdmi *hdmi = i2c_get_adapdata(adap); | |
736 | struct inno_hdmi_i2c *i2c = hdmi->i2c; | |
737 | int i, ret = 0; | |
738 | ||
739 | mutex_lock(&i2c->lock); | |
740 | ||
741 | /* Clear the EDID interrupt flag and unmute the interrupt */ | |
742 | hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY); | |
743 | hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); | |
744 | ||
745 | for (i = 0; i < num; i++) { | |
746 | dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n", | |
747 | i + 1, num, msgs[i].len, msgs[i].flags); | |
748 | ||
749 | if (msgs[i].flags & I2C_M_RD) | |
750 | ret = inno_hdmi_i2c_read(hdmi, &msgs[i]); | |
751 | else | |
752 | ret = inno_hdmi_i2c_write(hdmi, &msgs[i]); | |
753 | ||
754 | if (ret < 0) | |
755 | break; | |
756 | } | |
757 | ||
758 | if (!ret) | |
759 | ret = num; | |
760 | ||
761 | /* Mute HDMI EDID interrupt */ | |
762 | hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); | |
763 | ||
764 | mutex_unlock(&i2c->lock); | |
765 | ||
766 | return ret; | |
767 | } | |
768 | ||
769 | static u32 inno_hdmi_i2c_func(struct i2c_adapter *adapter) | |
770 | { | |
771 | return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; | |
772 | } | |
773 | ||
774 | static const struct i2c_algorithm inno_hdmi_algorithm = { | |
775 | .master_xfer = inno_hdmi_i2c_xfer, | |
776 | .functionality = inno_hdmi_i2c_func, | |
777 | }; | |
778 | ||
779 | static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi) | |
780 | { | |
781 | struct i2c_adapter *adap; | |
782 | struct inno_hdmi_i2c *i2c; | |
783 | int ret; | |
784 | ||
785 | i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL); | |
786 | if (!i2c) | |
787 | return ERR_PTR(-ENOMEM); | |
788 | ||
789 | mutex_init(&i2c->lock); | |
790 | init_completion(&i2c->cmp); | |
791 | ||
792 | adap = &i2c->adap; | |
793 | adap->class = I2C_CLASS_DDC; | |
794 | adap->owner = THIS_MODULE; | |
795 | adap->dev.parent = hdmi->dev; | |
796 | adap->dev.of_node = hdmi->dev->of_node; | |
797 | adap->algo = &inno_hdmi_algorithm; | |
798 | strlcpy(adap->name, "Inno HDMI", sizeof(adap->name)); | |
799 | i2c_set_adapdata(adap, hdmi); | |
800 | ||
801 | ret = i2c_add_adapter(adap); | |
802 | if (ret) { | |
803 | dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name); | |
804 | devm_kfree(hdmi->dev, i2c); | |
805 | return ERR_PTR(ret); | |
806 | } | |
807 | ||
808 | hdmi->i2c = i2c; | |
809 | ||
810 | dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name); | |
811 | ||
812 | return adap; | |
813 | } | |
814 | ||
815 | static int inno_hdmi_bind(struct device *dev, struct device *master, | |
816 | void *data) | |
817 | { | |
818 | struct platform_device *pdev = to_platform_device(dev); | |
819 | struct drm_device *drm = data; | |
820 | struct inno_hdmi *hdmi; | |
821 | struct resource *iores; | |
822 | int irq; | |
823 | int ret; | |
824 | ||
825 | hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); | |
826 | if (!hdmi) | |
827 | return -ENOMEM; | |
828 | ||
829 | hdmi->dev = dev; | |
830 | hdmi->drm_dev = drm; | |
831 | ||
832 | iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
833 | if (!iores) | |
834 | return -ENXIO; | |
835 | ||
836 | hdmi->regs = devm_ioremap_resource(dev, iores); | |
837 | if (IS_ERR(hdmi->regs)) | |
838 | return PTR_ERR(hdmi->regs); | |
839 | ||
840 | hdmi->pclk = devm_clk_get(hdmi->dev, "pclk"); | |
841 | if (IS_ERR(hdmi->pclk)) { | |
842 | dev_err(hdmi->dev, "Unable to get HDMI pclk clk\n"); | |
843 | return PTR_ERR(hdmi->pclk); | |
844 | } | |
845 | ||
846 | ret = clk_prepare_enable(hdmi->pclk); | |
847 | if (ret) { | |
848 | dev_err(hdmi->dev, "Cannot enable HDMI pclk clock: %d\n", ret); | |
849 | return ret; | |
850 | } | |
851 | ||
852 | irq = platform_get_irq(pdev, 0); | |
853 | if (irq < 0) | |
854 | return irq; | |
855 | ||
856 | inno_hdmi_reset(hdmi); | |
857 | ||
858 | hdmi->ddc = inno_hdmi_i2c_adapter(hdmi); | |
859 | if (IS_ERR(hdmi->ddc)) { | |
2743becb | 860 | ret = PTR_ERR(hdmi->ddc); |
412d4ae6 | 861 | hdmi->ddc = NULL; |
2743becb | 862 | return ret; |
412d4ae6 YY |
863 | } |
864 | ||
865 | /* | |
866 | * When IP controller haven't configured to an accurate video | |
867 | * timing, then the TMDS clock source would be switched to | |
868 | * PCLK_HDMI, so we need to init the TMDS rate to PCLK rate, | |
869 | * and reconfigure the DDC clock. | |
870 | */ | |
871 | hdmi->tmds_rate = clk_get_rate(hdmi->pclk); | |
872 | inno_hdmi_i2c_init(hdmi); | |
873 | ||
874 | ret = inno_hdmi_register(drm, hdmi); | |
875 | if (ret) | |
876 | return ret; | |
877 | ||
878 | dev_set_drvdata(dev, hdmi); | |
879 | ||
880 | /* Unmute hotplug interrupt */ | |
881 | hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1)); | |
882 | ||
883 | ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq, | |
884 | inno_hdmi_irq, IRQF_SHARED, | |
885 | dev_name(dev), hdmi); | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
890 | static void inno_hdmi_unbind(struct device *dev, struct device *master, | |
891 | void *data) | |
892 | { | |
893 | struct inno_hdmi *hdmi = dev_get_drvdata(dev); | |
894 | ||
895 | hdmi->connector.funcs->destroy(&hdmi->connector); | |
896 | hdmi->encoder.funcs->destroy(&hdmi->encoder); | |
897 | ||
898 | clk_disable_unprepare(hdmi->pclk); | |
899 | i2c_put_adapter(hdmi->ddc); | |
900 | } | |
901 | ||
902 | static const struct component_ops inno_hdmi_ops = { | |
903 | .bind = inno_hdmi_bind, | |
904 | .unbind = inno_hdmi_unbind, | |
905 | }; | |
906 | ||
907 | static int inno_hdmi_probe(struct platform_device *pdev) | |
908 | { | |
909 | return component_add(&pdev->dev, &inno_hdmi_ops); | |
910 | } | |
911 | ||
912 | static int inno_hdmi_remove(struct platform_device *pdev) | |
913 | { | |
914 | component_del(&pdev->dev, &inno_hdmi_ops); | |
915 | ||
916 | return 0; | |
917 | } | |
918 | ||
919 | static const struct of_device_id inno_hdmi_dt_ids[] = { | |
920 | { .compatible = "rockchip,rk3036-inno-hdmi", | |
921 | }, | |
922 | {}, | |
923 | }; | |
924 | MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids); | |
925 | ||
926 | static struct platform_driver inno_hdmi_driver = { | |
927 | .probe = inno_hdmi_probe, | |
928 | .remove = inno_hdmi_remove, | |
929 | .driver = { | |
930 | .name = "innohdmi-rockchip", | |
931 | .of_match_table = inno_hdmi_dt_ids, | |
932 | }, | |
933 | }; | |
934 | ||
935 | module_platform_driver(inno_hdmi_driver); | |
936 | ||
937 | MODULE_AUTHOR("Zheng Yang <zhengyang@rock-chips.com>"); | |
938 | MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); | |
939 | MODULE_DESCRIPTION("Rockchip Specific INNO-HDMI Driver"); | |
940 | MODULE_LICENSE("GPL v2"); | |
941 | MODULE_ALIAS("platform:innohdmi-rockchip"); |