?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.2.1
[linux/fpc-iii.git] / drivers / gpu / drm / i2c / tda998x_drv.c
blob424228be79ae5b2aa1557ca07331e4e49e665ef8
1 /*
2 * Copyright (C) 2012 Texas Instruments
3 * Author: Rob Clark <robdclark@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include <linux/component.h>
19 #include <linux/hdmi.h>
20 #include <linux/module.h>
21 #include <linux/irq.h>
22 #include <sound/asoundef.h>
23
24 #include <drm/drmP.h>
25 #include <drm/drm_crtc_helper.h>
26 #include <drm/drm_encoder_slave.h>
27 #include <drm/drm_edid.h>
28 #include <drm/drm_of.h>
29 #include <drm/i2c/tda998x.h>
30
31 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
32
33 struct tda998x_priv {
34 struct i2c_client *cec;
35 struct i2c_client *hdmi;
36 struct mutex mutex;
37 struct delayed_work dwork;
38 uint16_t rev;
39 uint8_t current_page;
40 int dpms;
41 bool is_hdmi_sink;
42 u8 vip_cntrl_0;
43 u8 vip_cntrl_1;
44 u8 vip_cntrl_2;
45 struct tda998x_encoder_params params;
46
47 wait_queue_head_t wq_edid;
48 volatile int wq_edid_wait;
49 struct drm_encoder *encoder;
50 };
51
52 #define to_tda998x_priv(x) ((struct tda998x_priv *)to_encoder_slave(x)->slave_priv)
53
54 /* The TDA9988 series of devices use a paged register scheme.. to simplify
55 * things we encode the page # in upper bits of the register #. To read/
56 * write a given register, we need to make sure CURPAGE register is set
57 * appropriately. Which implies reads/writes are not atomic. Fun!
58 */
59
60 #define REG(page, addr) (((page) << 8) | (addr))
61 #define REG2ADDR(reg) ((reg) & 0xff)
62 #define REG2PAGE(reg) (((reg) >> 8) & 0xff)
63
64 #define REG_CURPAGE 0xff /* write */
65
66
67 /* Page 00h: General Control */
68 #define REG_VERSION_LSB REG(0x00, 0x00) /* read */
69 #define REG_MAIN_CNTRL0 REG(0x00, 0x01) /* read/write */
70 # define MAIN_CNTRL0_SR (1 << 0)
71 # define MAIN_CNTRL0_DECS (1 << 1)
72 # define MAIN_CNTRL0_DEHS (1 << 2)
73 # define MAIN_CNTRL0_CECS (1 << 3)
74 # define MAIN_CNTRL0_CEHS (1 << 4)
75 # define MAIN_CNTRL0_SCALER (1 << 7)
76 #define REG_VERSION_MSB REG(0x00, 0x02) /* read */
77 #define REG_SOFTRESET REG(0x00, 0x0a) /* write */
78 # define SOFTRESET_AUDIO (1 << 0)
79 # define SOFTRESET_I2C_MASTER (1 << 1)
80 #define REG_DDC_DISABLE REG(0x00, 0x0b) /* read/write */
81 #define REG_CCLK_ON REG(0x00, 0x0c) /* read/write */
82 #define REG_I2C_MASTER REG(0x00, 0x0d) /* read/write */
83 # define I2C_MASTER_DIS_MM (1 << 0)
84 # define I2C_MASTER_DIS_FILT (1 << 1)
85 # define I2C_MASTER_APP_STRT_LAT (1 << 2)
86 #define REG_FEAT_POWERDOWN REG(0x00, 0x0e) /* read/write */
87 # define FEAT_POWERDOWN_SPDIF (1 << 3)
88 #define REG_INT_FLAGS_0 REG(0x00, 0x0f) /* read/write */
89 #define REG_INT_FLAGS_1 REG(0x00, 0x10) /* read/write */
90 #define REG_INT_FLAGS_2 REG(0x00, 0x11) /* read/write */
91 # define INT_FLAGS_2_EDID_BLK_RD (1 << 1)
92 #define REG_ENA_ACLK REG(0x00, 0x16) /* read/write */
93 #define REG_ENA_VP_0 REG(0x00, 0x18) /* read/write */
94 #define REG_ENA_VP_1 REG(0x00, 0x19) /* read/write */
95 #define REG_ENA_VP_2 REG(0x00, 0x1a) /* read/write */
96 #define REG_ENA_AP REG(0x00, 0x1e) /* read/write */
97 #define REG_VIP_CNTRL_0 REG(0x00, 0x20) /* write */
98 # define VIP_CNTRL_0_MIRR_A (1 << 7)
99 # define VIP_CNTRL_0_SWAP_A(x) (((x) & 7) << 4)
100 # define VIP_CNTRL_0_MIRR_B (1 << 3)
101 # define VIP_CNTRL_0_SWAP_B(x) (((x) & 7) << 0)
102 #define REG_VIP_CNTRL_1 REG(0x00, 0x21) /* write */
103 # define VIP_CNTRL_1_MIRR_C (1 << 7)
104 # define VIP_CNTRL_1_SWAP_C(x) (((x) & 7) << 4)
105 # define VIP_CNTRL_1_MIRR_D (1 << 3)
106 # define VIP_CNTRL_1_SWAP_D(x) (((x) & 7) << 0)
107 #define REG_VIP_CNTRL_2 REG(0x00, 0x22) /* write */
108 # define VIP_CNTRL_2_MIRR_E (1 << 7)
109 # define VIP_CNTRL_2_SWAP_E(x) (((x) & 7) << 4)
110 # define VIP_CNTRL_2_MIRR_F (1 << 3)
111 # define VIP_CNTRL_2_SWAP_F(x) (((x) & 7) << 0)
112 #define REG_VIP_CNTRL_3 REG(0x00, 0x23) /* write */
113 # define VIP_CNTRL_3_X_TGL (1 << 0)
114 # define VIP_CNTRL_3_H_TGL (1 << 1)
115 # define VIP_CNTRL_3_V_TGL (1 << 2)
116 # define VIP_CNTRL_3_EMB (1 << 3)
117 # define VIP_CNTRL_3_SYNC_DE (1 << 4)
118 # define VIP_CNTRL_3_SYNC_HS (1 << 5)
119 # define VIP_CNTRL_3_DE_INT (1 << 6)
120 # define VIP_CNTRL_3_EDGE (1 << 7)
121 #define REG_VIP_CNTRL_4 REG(0x00, 0x24) /* write */
122 # define VIP_CNTRL_4_BLC(x) (((x) & 3) << 0)
123 # define VIP_CNTRL_4_BLANKIT(x) (((x) & 3) << 2)
124 # define VIP_CNTRL_4_CCIR656 (1 << 4)
125 # define VIP_CNTRL_4_656_ALT (1 << 5)
126 # define VIP_CNTRL_4_TST_656 (1 << 6)
127 # define VIP_CNTRL_4_TST_PAT (1 << 7)
128 #define REG_VIP_CNTRL_5 REG(0x00, 0x25) /* write */
129 # define VIP_CNTRL_5_CKCASE (1 << 0)
130 # define VIP_CNTRL_5_SP_CNT(x) (((x) & 3) << 1)
131 #define REG_MUX_AP REG(0x00, 0x26) /* read/write */
132 # define MUX_AP_SELECT_I2S 0x64
133 # define MUX_AP_SELECT_SPDIF 0x40
134 #define REG_MUX_VP_VIP_OUT REG(0x00, 0x27) /* read/write */
135 #define REG_MAT_CONTRL REG(0x00, 0x80) /* write */
136 # define MAT_CONTRL_MAT_SC(x) (((x) & 3) << 0)
137 # define MAT_CONTRL_MAT_BP (1 << 2)
138 #define REG_VIDFORMAT REG(0x00, 0xa0) /* write */
139 #define REG_REFPIX_MSB REG(0x00, 0xa1) /* write */
140 #define REG_REFPIX_LSB REG(0x00, 0xa2) /* write */
141 #define REG_REFLINE_MSB REG(0x00, 0xa3) /* write */
142 #define REG_REFLINE_LSB REG(0x00, 0xa4) /* write */
143 #define REG_NPIX_MSB REG(0x00, 0xa5) /* write */
144 #define REG_NPIX_LSB REG(0x00, 0xa6) /* write */
145 #define REG_NLINE_MSB REG(0x00, 0xa7) /* write */
146 #define REG_NLINE_LSB REG(0x00, 0xa8) /* write */
147 #define REG_VS_LINE_STRT_1_MSB REG(0x00, 0xa9) /* write */
148 #define REG_VS_LINE_STRT_1_LSB REG(0x00, 0xaa) /* write */
149 #define REG_VS_PIX_STRT_1_MSB REG(0x00, 0xab) /* write */
150 #define REG_VS_PIX_STRT_1_LSB REG(0x00, 0xac) /* write */
151 #define REG_VS_LINE_END_1_MSB REG(0x00, 0xad) /* write */
152 #define REG_VS_LINE_END_1_LSB REG(0x00, 0xae) /* write */
153 #define REG_VS_PIX_END_1_MSB REG(0x00, 0xaf) /* write */
154 #define REG_VS_PIX_END_1_LSB REG(0x00, 0xb0) /* write */
155 #define REG_VS_LINE_STRT_2_MSB REG(0x00, 0xb1) /* write */
156 #define REG_VS_LINE_STRT_2_LSB REG(0x00, 0xb2) /* write */
157 #define REG_VS_PIX_STRT_2_MSB REG(0x00, 0xb3) /* write */
158 #define REG_VS_PIX_STRT_2_LSB REG(0x00, 0xb4) /* write */
159 #define REG_VS_LINE_END_2_MSB REG(0x00, 0xb5) /* write */
160 #define REG_VS_LINE_END_2_LSB REG(0x00, 0xb6) /* write */
161 #define REG_VS_PIX_END_2_MSB REG(0x00, 0xb7) /* write */
162 #define REG_VS_PIX_END_2_LSB REG(0x00, 0xb8) /* write */
163 #define REG_HS_PIX_START_MSB REG(0x00, 0xb9) /* write */
164 #define REG_HS_PIX_START_LSB REG(0x00, 0xba) /* write */
165 #define REG_HS_PIX_STOP_MSB REG(0x00, 0xbb) /* write */
166 #define REG_HS_PIX_STOP_LSB REG(0x00, 0xbc) /* write */
167 #define REG_VWIN_START_1_MSB REG(0x00, 0xbd) /* write */
168 #define REG_VWIN_START_1_LSB REG(0x00, 0xbe) /* write */
169 #define REG_VWIN_END_1_MSB REG(0x00, 0xbf) /* write */
170 #define REG_VWIN_END_1_LSB REG(0x00, 0xc0) /* write */
171 #define REG_VWIN_START_2_MSB REG(0x00, 0xc1) /* write */
172 #define REG_VWIN_START_2_LSB REG(0x00, 0xc2) /* write */
173 #define REG_VWIN_END_2_MSB REG(0x00, 0xc3) /* write */
174 #define REG_VWIN_END_2_LSB REG(0x00, 0xc4) /* write */
175 #define REG_DE_START_MSB REG(0x00, 0xc5) /* write */
176 #define REG_DE_START_LSB REG(0x00, 0xc6) /* write */
177 #define REG_DE_STOP_MSB REG(0x00, 0xc7) /* write */
178 #define REG_DE_STOP_LSB REG(0x00, 0xc8) /* write */
179 #define REG_TBG_CNTRL_0 REG(0x00, 0xca) /* write */
180 # define TBG_CNTRL_0_TOP_TGL (1 << 0)
181 # define TBG_CNTRL_0_TOP_SEL (1 << 1)
182 # define TBG_CNTRL_0_DE_EXT (1 << 2)
183 # define TBG_CNTRL_0_TOP_EXT (1 << 3)
184 # define TBG_CNTRL_0_FRAME_DIS (1 << 5)
185 # define TBG_CNTRL_0_SYNC_MTHD (1 << 6)
186 # define TBG_CNTRL_0_SYNC_ONCE (1 << 7)
187 #define REG_TBG_CNTRL_1 REG(0x00, 0xcb) /* write */
188 # define TBG_CNTRL_1_H_TGL (1 << 0)
189 # define TBG_CNTRL_1_V_TGL (1 << 1)
190 # define TBG_CNTRL_1_TGL_EN (1 << 2)
191 # define TBG_CNTRL_1_X_EXT (1 << 3)
192 # define TBG_CNTRL_1_H_EXT (1 << 4)
193 # define TBG_CNTRL_1_V_EXT (1 << 5)
194 # define TBG_CNTRL_1_DWIN_DIS (1 << 6)
195 #define REG_ENABLE_SPACE REG(0x00, 0xd6) /* write */
196 #define REG_HVF_CNTRL_0 REG(0x00, 0xe4) /* write */
197 # define HVF_CNTRL_0_SM (1 << 7)
198 # define HVF_CNTRL_0_RWB (1 << 6)
199 # define HVF_CNTRL_0_PREFIL(x) (((x) & 3) << 2)
200 # define HVF_CNTRL_0_INTPOL(x) (((x) & 3) << 0)
201 #define REG_HVF_CNTRL_1 REG(0x00, 0xe5) /* write */
202 # define HVF_CNTRL_1_FOR (1 << 0)
203 # define HVF_CNTRL_1_YUVBLK (1 << 1)
204 # define HVF_CNTRL_1_VQR(x) (((x) & 3) << 2)
205 # define HVF_CNTRL_1_PAD(x) (((x) & 3) << 4)
206 # define HVF_CNTRL_1_SEMI_PLANAR (1 << 6)
207 #define REG_RPT_CNTRL REG(0x00, 0xf0) /* write */
208 #define REG_I2S_FORMAT REG(0x00, 0xfc) /* read/write */
209 # define I2S_FORMAT(x) (((x) & 3) << 0)
210 #define REG_AIP_CLKSEL REG(0x00, 0xfd) /* write */
211 # define AIP_CLKSEL_AIP_SPDIF (0 << 3)
212 # define AIP_CLKSEL_AIP_I2S (1 << 3)
213 # define AIP_CLKSEL_FS_ACLK (0 << 0)
214 # define AIP_CLKSEL_FS_MCLK (1 << 0)
215 # define AIP_CLKSEL_FS_FS64SPDIF (2 << 0)
216
217 /* Page 02h: PLL settings */
218 #define REG_PLL_SERIAL_1 REG(0x02, 0x00) /* read/write */
219 # define PLL_SERIAL_1_SRL_FDN (1 << 0)
220 # define PLL_SERIAL_1_SRL_IZ(x) (((x) & 3) << 1)
221 # define PLL_SERIAL_1_SRL_MAN_IZ (1 << 6)
222 #define REG_PLL_SERIAL_2 REG(0x02, 0x01) /* read/write */
223 # define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0)
224 # define PLL_SERIAL_2_SRL_PR(x) (((x) & 0xf) << 4)
225 #define REG_PLL_SERIAL_3 REG(0x02, 0x02) /* read/write */
226 # define PLL_SERIAL_3_SRL_CCIR (1 << 0)
227 # define PLL_SERIAL_3_SRL_DE (1 << 2)
228 # define PLL_SERIAL_3_SRL_PXIN_SEL (1 << 4)
229 #define REG_SERIALIZER REG(0x02, 0x03) /* read/write */
230 #define REG_BUFFER_OUT REG(0x02, 0x04) /* read/write */
231 #define REG_PLL_SCG1 REG(0x02, 0x05) /* read/write */
232 #define REG_PLL_SCG2 REG(0x02, 0x06) /* read/write */
233 #define REG_PLL_SCGN1 REG(0x02, 0x07) /* read/write */
234 #define REG_PLL_SCGN2 REG(0x02, 0x08) /* read/write */
235 #define REG_PLL_SCGR1 REG(0x02, 0x09) /* read/write */
236 #define REG_PLL_SCGR2 REG(0x02, 0x0a) /* read/write */
237 #define REG_AUDIO_DIV REG(0x02, 0x0e) /* read/write */
238 # define AUDIO_DIV_SERCLK_1 0
239 # define AUDIO_DIV_SERCLK_2 1
240 # define AUDIO_DIV_SERCLK_4 2
241 # define AUDIO_DIV_SERCLK_8 3
242 # define AUDIO_DIV_SERCLK_16 4
243 # define AUDIO_DIV_SERCLK_32 5
244 #define REG_SEL_CLK REG(0x02, 0x11) /* read/write */
245 # define SEL_CLK_SEL_CLK1 (1 << 0)
246 # define SEL_CLK_SEL_VRF_CLK(x) (((x) & 3) << 1)
247 # define SEL_CLK_ENA_SC_CLK (1 << 3)
248 #define REG_ANA_GENERAL REG(0x02, 0x12) /* read/write */
249
250
251 /* Page 09h: EDID Control */
252 #define REG_EDID_DATA_0 REG(0x09, 0x00) /* read */
253 /* next 127 successive registers are the EDID block */
254 #define REG_EDID_CTRL REG(0x09, 0xfa) /* read/write */
255 #define REG_DDC_ADDR REG(0x09, 0xfb) /* read/write */
256 #define REG_DDC_OFFS REG(0x09, 0xfc) /* read/write */
257 #define REG_DDC_SEGM_ADDR REG(0x09, 0xfd) /* read/write */
258 #define REG_DDC_SEGM REG(0x09, 0xfe) /* read/write */
259
260
261 /* Page 10h: information frames and packets */
262 #define REG_IF1_HB0 REG(0x10, 0x20) /* read/write */
263 #define REG_IF2_HB0 REG(0x10, 0x40) /* read/write */
264 #define REG_IF3_HB0 REG(0x10, 0x60) /* read/write */
265 #define REG_IF4_HB0 REG(0x10, 0x80) /* read/write */
266 #define REG_IF5_HB0 REG(0x10, 0xa0) /* read/write */
267
268
269 /* Page 11h: audio settings and content info packets */
270 #define REG_AIP_CNTRL_0 REG(0x11, 0x00) /* read/write */
271 # define AIP_CNTRL_0_RST_FIFO (1 << 0)
272 # define AIP_CNTRL_0_SWAP (1 << 1)
273 # define AIP_CNTRL_0_LAYOUT (1 << 2)
274 # define AIP_CNTRL_0_ACR_MAN (1 << 5)
275 # define AIP_CNTRL_0_RST_CTS (1 << 6)
276 #define REG_CA_I2S REG(0x11, 0x01) /* read/write */
277 # define CA_I2S_CA_I2S(x) (((x) & 31) << 0)
278 # define CA_I2S_HBR_CHSTAT (1 << 6)
279 #define REG_LATENCY_RD REG(0x11, 0x04) /* read/write */
280 #define REG_ACR_CTS_0 REG(0x11, 0x05) /* read/write */
281 #define REG_ACR_CTS_1 REG(0x11, 0x06) /* read/write */
282 #define REG_ACR_CTS_2 REG(0x11, 0x07) /* read/write */
283 #define REG_ACR_N_0 REG(0x11, 0x08) /* read/write */
284 #define REG_ACR_N_1 REG(0x11, 0x09) /* read/write */
285 #define REG_ACR_N_2 REG(0x11, 0x0a) /* read/write */
286 #define REG_CTS_N REG(0x11, 0x0c) /* read/write */
287 # define CTS_N_K(x) (((x) & 7) << 0)
288 # define CTS_N_M(x) (((x) & 3) << 4)
289 #define REG_ENC_CNTRL REG(0x11, 0x0d) /* read/write */
290 # define ENC_CNTRL_RST_ENC (1 << 0)
291 # define ENC_CNTRL_RST_SEL (1 << 1)
292 # define ENC_CNTRL_CTL_CODE(x) (((x) & 3) << 2)
293 #define REG_DIP_FLAGS REG(0x11, 0x0e) /* read/write */
294 # define DIP_FLAGS_ACR (1 << 0)
295 # define DIP_FLAGS_GC (1 << 1)
296 #define REG_DIP_IF_FLAGS REG(0x11, 0x0f) /* read/write */
297 # define DIP_IF_FLAGS_IF1 (1 << 1)
298 # define DIP_IF_FLAGS_IF2 (1 << 2)
299 # define DIP_IF_FLAGS_IF3 (1 << 3)
300 # define DIP_IF_FLAGS_IF4 (1 << 4)
301 # define DIP_IF_FLAGS_IF5 (1 << 5)
302 #define REG_CH_STAT_B(x) REG(0x11, 0x14 + (x)) /* read/write */
303
304
305 /* Page 12h: HDCP and OTP */
306 #define REG_TX3 REG(0x12, 0x9a) /* read/write */
307 #define REG_TX4 REG(0x12, 0x9b) /* read/write */
308 # define TX4_PD_RAM (1 << 1)
309 #define REG_TX33 REG(0x12, 0xb8) /* read/write */
310 # define TX33_HDMI (1 << 1)
311
312
313 /* Page 13h: Gamut related metadata packets */
314
315
316
317 /* CEC registers: (not paged)
318 */
319 #define REG_CEC_INTSTATUS 0xee /* read */
320 # define CEC_INTSTATUS_CEC (1 << 0)
321 # define CEC_INTSTATUS_HDMI (1 << 1)
322 #define REG_CEC_FRO_IM_CLK_CTRL 0xfb /* read/write */
323 # define CEC_FRO_IM_CLK_CTRL_GHOST_DIS (1 << 7)
324 # define CEC_FRO_IM_CLK_CTRL_ENA_OTP (1 << 6)
325 # define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL (1 << 1)
326 # define CEC_FRO_IM_CLK_CTRL_FRO_DIV (1 << 0)
327 #define REG_CEC_RXSHPDINTENA 0xfc /* read/write */
328 #define REG_CEC_RXSHPDINT 0xfd /* read */
329 #define REG_CEC_RXSHPDLEV 0xfe /* read */
330 # define CEC_RXSHPDLEV_RXSENS (1 << 0)
331 # define CEC_RXSHPDLEV_HPD (1 << 1)
332
333 #define REG_CEC_ENAMODS 0xff /* read/write */
334 # define CEC_ENAMODS_DIS_FRO (1 << 6)
335 # define CEC_ENAMODS_DIS_CCLK (1 << 5)
336 # define CEC_ENAMODS_EN_RXSENS (1 << 2)
337 # define CEC_ENAMODS_EN_HDMI (1 << 1)
338 # define CEC_ENAMODS_EN_CEC (1 << 0)
339
340
341 /* Device versions: */
342 #define TDA9989N2 0x0101
343 #define TDA19989 0x0201
344 #define TDA19989N2 0x0202
345 #define TDA19988 0x0301
346
347 static void
348 cec_write(struct tda998x_priv *priv, uint16_t addr, uint8_t val)
349 {
350 struct i2c_client *client = priv->cec;
351 uint8_t buf[] = {addr, val};
352 int ret;
353
354 ret = i2c_master_send(client, buf, sizeof(buf));
355 if (ret < 0)
356 dev_err(&client->dev, "Error %d writing to cec:0x%x\n", ret, addr);
357 }
358
359 static uint8_t
360 cec_read(struct tda998x_priv *priv, uint8_t addr)
361 {
362 struct i2c_client *client = priv->cec;
363 uint8_t val;
364 int ret;
365
366 ret = i2c_master_send(client, &addr, sizeof(addr));
367 if (ret < 0)
368 goto fail;
369
370 ret = i2c_master_recv(client, &val, sizeof(val));
371 if (ret < 0)
372 goto fail;
373
374 return val;
375
376 fail:
377 dev_err(&client->dev, "Error %d reading from cec:0x%x\n", ret, addr);
378 return 0;
379 }
380
381 static int
382 set_page(struct tda998x_priv *priv, uint16_t reg)
383 {
384 if (REG2PAGE(reg) != priv->current_page) {
385 struct i2c_client *client = priv->hdmi;
386 uint8_t buf[] = {
387 REG_CURPAGE, REG2PAGE(reg)
388 };
389 int ret = i2c_master_send(client, buf, sizeof(buf));
390 if (ret < 0) {
391 dev_err(&client->dev, "%s %04x err %d\n", __func__,
392 reg, ret);
393 return ret;
394 }
395
396 priv->current_page = REG2PAGE(reg);
397 }
398 return 0;
399 }
400
401 static int
402 reg_read_range(struct tda998x_priv *priv, uint16_t reg, char *buf, int cnt)
403 {
404 struct i2c_client *client = priv->hdmi;
405 uint8_t addr = REG2ADDR(reg);
406 int ret;
407
408 mutex_lock(&priv->mutex);
409 ret = set_page(priv, reg);
410 if (ret < 0)
411 goto out;
412
413 ret = i2c_master_send(client, &addr, sizeof(addr));
414 if (ret < 0)
415 goto fail;
416
417 ret = i2c_master_recv(client, buf, cnt);
418 if (ret < 0)
419 goto fail;
420
421 goto out;
422
423 fail:
424 dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg);
425 out:
426 mutex_unlock(&priv->mutex);
427 return ret;
428 }
429
430 static void
431 reg_write_range(struct tda998x_priv *priv, uint16_t reg, uint8_t *p, int cnt)
432 {
433 struct i2c_client *client = priv->hdmi;
434 uint8_t buf[cnt+1];
435 int ret;
436
437 buf[0] = REG2ADDR(reg);
438 memcpy(&buf[1], p, cnt);
439
440 mutex_lock(&priv->mutex);
441 ret = set_page(priv, reg);
442 if (ret < 0)
443 goto out;
444
445 ret = i2c_master_send(client, buf, cnt + 1);
446 if (ret < 0)
447 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
448 out:
449 mutex_unlock(&priv->mutex);
450 }
451
452 static int
453 reg_read(struct tda998x_priv *priv, uint16_t reg)
454 {
455 uint8_t val = 0;
456 int ret;
457
458 ret = reg_read_range(priv, reg, &val, sizeof(val));
459 if (ret < 0)
460 return ret;
461 return val;
462 }
463
464 static void
465 reg_write(struct tda998x_priv *priv, uint16_t reg, uint8_t val)
466 {
467 struct i2c_client *client = priv->hdmi;
468 uint8_t buf[] = {REG2ADDR(reg), val};
469 int ret;
470
471 mutex_lock(&priv->mutex);
472 ret = set_page(priv, reg);
473 if (ret < 0)
474 goto out;
475
476 ret = i2c_master_send(client, buf, sizeof(buf));
477 if (ret < 0)
478 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
479 out:
480 mutex_unlock(&priv->mutex);
481 }
482
483 static void
484 reg_write16(struct tda998x_priv *priv, uint16_t reg, uint16_t val)
485 {
486 struct i2c_client *client = priv->hdmi;
487 uint8_t buf[] = {REG2ADDR(reg), val >> 8, val};
488 int ret;
489
490 mutex_lock(&priv->mutex);
491 ret = set_page(priv, reg);
492 if (ret < 0)
493 goto out;
494
495 ret = i2c_master_send(client, buf, sizeof(buf));
496 if (ret < 0)
497 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
498 out:
499 mutex_unlock(&priv->mutex);
500 }
501
502 static void
503 reg_set(struct tda998x_priv *priv, uint16_t reg, uint8_t val)
504 {
505 int old_val;
506
507 old_val = reg_read(priv, reg);
508 if (old_val >= 0)
509 reg_write(priv, reg, old_val | val);
510 }
511
512 static void
513 reg_clear(struct tda998x_priv *priv, uint16_t reg, uint8_t val)
514 {
515 int old_val;
516
517 old_val = reg_read(priv, reg);
518 if (old_val >= 0)
519 reg_write(priv, reg, old_val & ~val);
520 }
521
522 static void
523 tda998x_reset(struct tda998x_priv *priv)
524 {
525 /* reset audio and i2c master: */
526 reg_write(priv, REG_SOFTRESET, SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER);
527 msleep(50);
528 reg_write(priv, REG_SOFTRESET, 0);
529 msleep(50);
530
531 /* reset transmitter: */
532 reg_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
533 reg_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
534
535 /* PLL registers common configuration */
536 reg_write(priv, REG_PLL_SERIAL_1, 0x00);
537 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(1));
538 reg_write(priv, REG_PLL_SERIAL_3, 0x00);
539 reg_write(priv, REG_SERIALIZER, 0x00);
540 reg_write(priv, REG_BUFFER_OUT, 0x00);
541 reg_write(priv, REG_PLL_SCG1, 0x00);
542 reg_write(priv, REG_AUDIO_DIV, AUDIO_DIV_SERCLK_8);
543 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
544 reg_write(priv, REG_PLL_SCGN1, 0xfa);
545 reg_write(priv, REG_PLL_SCGN2, 0x00);
546 reg_write(priv, REG_PLL_SCGR1, 0x5b);
547 reg_write(priv, REG_PLL_SCGR2, 0x00);
548 reg_write(priv, REG_PLL_SCG2, 0x10);
549
550 /* Write the default value MUX register */
551 reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
552 }
553
554 /* handle HDMI connect/disconnect */
555 static void tda998x_hpd(struct work_struct *work)
556 {
557 struct delayed_work *dwork = to_delayed_work(work);
558 struct tda998x_priv *priv =
559 container_of(dwork, struct tda998x_priv, dwork);
560
561 if (priv->encoder && priv->encoder->dev)
562 drm_kms_helper_hotplug_event(priv->encoder->dev);
563 }
564
565 /*
566 * only 2 interrupts may occur: screen plug/unplug and EDID read
567 */
568 static irqreturn_t tda998x_irq_thread(int irq, void *data)
569 {
570 struct tda998x_priv *priv = data;
571 u8 sta, cec, lvl, flag0, flag1, flag2;
572
573 if (!priv)
574 return IRQ_HANDLED;
575 sta = cec_read(priv, REG_CEC_INTSTATUS);
576 cec = cec_read(priv, REG_CEC_RXSHPDINT);
577 lvl = cec_read(priv, REG_CEC_RXSHPDLEV);
578 flag0 = reg_read(priv, REG_INT_FLAGS_0);
579 flag1 = reg_read(priv, REG_INT_FLAGS_1);
580 flag2 = reg_read(priv, REG_INT_FLAGS_2);
581 DRM_DEBUG_DRIVER(
582 "tda irq sta %02x cec %02x lvl %02x f0 %02x f1 %02x f2 %02x\n",
583 sta, cec, lvl, flag0, flag1, flag2);
584 if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) {
585 priv->wq_edid_wait = 0;
586 wake_up(&priv->wq_edid);
587 } else if (cec != 0) { /* HPD change */
588 schedule_delayed_work(&priv->dwork, HZ/10);
589 }
590 return IRQ_HANDLED;
591 }
592
593 static uint8_t tda998x_cksum(uint8_t *buf, size_t bytes)
594 {
595 int sum = 0;
596
597 while (bytes--)
598 sum -= *buf++;
599 return sum;
600 }
601
602 #define HB(x) (x)
603 #define PB(x) (HB(2) + 1 + (x))
604
605 static void
606 tda998x_write_if(struct tda998x_priv *priv, uint8_t bit, uint16_t addr,
607 uint8_t *buf, size_t size)
608 {
609 reg_clear(priv, REG_DIP_IF_FLAGS, bit);
610 reg_write_range(priv, addr, buf, size);
611 reg_set(priv, REG_DIP_IF_FLAGS, bit);
612 }
613
614 static void
615 tda998x_write_aif(struct tda998x_priv *priv, struct tda998x_encoder_params *p)
616 {
617 u8 buf[PB(HDMI_AUDIO_INFOFRAME_SIZE) + 1];
618
619 memset(buf, 0, sizeof(buf));
620 buf[HB(0)] = HDMI_INFOFRAME_TYPE_AUDIO;
621 buf[HB(1)] = 0x01;
622 buf[HB(2)] = HDMI_AUDIO_INFOFRAME_SIZE;
623 buf[PB(1)] = p->audio_frame[1] & 0x07; /* CC */
624 buf[PB(2)] = p->audio_frame[2] & 0x1c; /* SF */
625 buf[PB(4)] = p->audio_frame[4];
626 buf[PB(5)] = p->audio_frame[5] & 0xf8; /* DM_INH + LSV */
627
628 buf[PB(0)] = tda998x_cksum(buf, sizeof(buf));
629
630 tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, buf,
631 sizeof(buf));
632 }
633
634 static void
635 tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
636 {
637 struct hdmi_avi_infoframe frame;
638 u8 buf[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
639 ssize_t len;
640
641 drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
642
643 frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
644
645 len = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf));
646 if (len < 0) {
647 dev_err(&priv->hdmi->dev,
648 "hdmi_avi_infoframe_pack() failed: %zd\n", len);
649 return;
650 }
651
652 tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, buf, len);
653 }
654
655 static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
656 {
657 if (on) {
658 reg_set(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
659 reg_clear(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
660 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
661 } else {
662 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
663 }
664 }
665
666 static void
667 tda998x_configure_audio(struct tda998x_priv *priv,
668 struct drm_display_mode *mode, struct tda998x_encoder_params *p)
669 {
670 uint8_t buf[6], clksel_aip, clksel_fs, cts_n, adiv;
671 uint32_t n;
672
673 /* Enable audio ports */
674 reg_write(priv, REG_ENA_AP, p->audio_cfg);
675 reg_write(priv, REG_ENA_ACLK, p->audio_clk_cfg);
676
677 /* Set audio input source */
678 switch (p->audio_format) {
679 case AFMT_SPDIF:
680 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF);
681 clksel_aip = AIP_CLKSEL_AIP_SPDIF;
682 clksel_fs = AIP_CLKSEL_FS_FS64SPDIF;
683 cts_n = CTS_N_M(3) | CTS_N_K(3);
684 break;
685
686 case AFMT_I2S:
687 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S);
688 clksel_aip = AIP_CLKSEL_AIP_I2S;
689 clksel_fs = AIP_CLKSEL_FS_ACLK;
690 cts_n = CTS_N_M(3) | CTS_N_K(3);
691 break;
692
693 default:
694 BUG();
695 return;
696 }
697
698 reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
699 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT |
700 AIP_CNTRL_0_ACR_MAN); /* auto CTS */
701 reg_write(priv, REG_CTS_N, cts_n);
702
703 /*
704 * Audio input somehow depends on HDMI line rate which is
705 * related to pixclk. Testing showed that modes with pixclk
706 * >100MHz need a larger divider while <40MHz need the default.
707 * There is no detailed info in the datasheet, so we just
708 * assume 100MHz requires larger divider.
709 */
710 adiv = AUDIO_DIV_SERCLK_8;
711 if (mode->clock > 100000)
712 adiv++; /* AUDIO_DIV_SERCLK_16 */
713
714 /* S/PDIF asks for a larger divider */
715 if (p->audio_format == AFMT_SPDIF)
716 adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */
717
718 reg_write(priv, REG_AUDIO_DIV, adiv);
719
720 /*
721 * This is the approximate value of N, which happens to be
722 * the recommended values for non-coherent clocks.
723 */
724 n = 128 * p->audio_sample_rate / 1000;
725
726 /* Write the CTS and N values */
727 buf[0] = 0x44;
728 buf[1] = 0x42;
729 buf[2] = 0x01;
730 buf[3] = n;
731 buf[4] = n >> 8;
732 buf[5] = n >> 16;
733 reg_write_range(priv, REG_ACR_CTS_0, buf, 6);
734
735 /* Set CTS clock reference */
736 reg_write(priv, REG_AIP_CLKSEL, clksel_aip | clksel_fs);
737
738 /* Reset CTS generator */
739 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
740 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
741
742 /* Write the channel status */
743 buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
744 buf[1] = 0x00;
745 buf[2] = IEC958_AES3_CON_FS_NOTID;
746 buf[3] = IEC958_AES4_CON_ORIGFS_NOTID |
747 IEC958_AES4_CON_MAX_WORDLEN_24;
748 reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);
749
750 tda998x_audio_mute(priv, true);
751 msleep(20);
752 tda998x_audio_mute(priv, false);
753
754 /* Write the audio information packet */
755 tda998x_write_aif(priv, p);
756 }
757
758 /* DRM encoder functions */
759
760 static void tda998x_encoder_set_config(struct tda998x_priv *priv,
761 const struct tda998x_encoder_params *p)
762 {
763 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) |
764 (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) |
765 VIP_CNTRL_0_SWAP_B(p->swap_b) |
766 (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0);
767 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) |
768 (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) |
769 VIP_CNTRL_1_SWAP_D(p->swap_d) |
770 (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0);
771 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) |
772 (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) |
773 VIP_CNTRL_2_SWAP_F(p->swap_f) |
774 (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
775
776 priv->params = *p;
777 }
778
779 static void tda998x_encoder_dpms(struct tda998x_priv *priv, int mode)
780 {
781 /* we only care about on or off: */
782 if (mode != DRM_MODE_DPMS_ON)
783 mode = DRM_MODE_DPMS_OFF;
784
785 if (mode == priv->dpms)
786 return;
787
788 switch (mode) {
789 case DRM_MODE_DPMS_ON:
790 /* enable video ports, audio will be enabled later */
791 reg_write(priv, REG_ENA_VP_0, 0xff);
792 reg_write(priv, REG_ENA_VP_1, 0xff);
793 reg_write(priv, REG_ENA_VP_2, 0xff);
794 /* set muxing after enabling ports: */
795 reg_write(priv, REG_VIP_CNTRL_0, priv->vip_cntrl_0);
796 reg_write(priv, REG_VIP_CNTRL_1, priv->vip_cntrl_1);
797 reg_write(priv, REG_VIP_CNTRL_2, priv->vip_cntrl_2);
798 break;
799 case DRM_MODE_DPMS_OFF:
800 /* disable video ports */
801 reg_write(priv, REG_ENA_VP_0, 0x00);
802 reg_write(priv, REG_ENA_VP_1, 0x00);
803 reg_write(priv, REG_ENA_VP_2, 0x00);
804 break;
805 }
806
807 priv->dpms = mode;
808 }
809
810 static void
811 tda998x_encoder_save(struct drm_encoder *encoder)
812 {
813 DBG("");
814 }
815
816 static void
817 tda998x_encoder_restore(struct drm_encoder *encoder)
818 {
819 DBG("");
820 }
821
822 static bool
823 tda998x_encoder_mode_fixup(struct drm_encoder *encoder,
824 const struct drm_display_mode *mode,
825 struct drm_display_mode *adjusted_mode)
826 {
827 return true;
828 }
829
830 static int tda998x_encoder_mode_valid(struct tda998x_priv *priv,
831 struct drm_display_mode *mode)
832 {
833 if (mode->clock > 150000)
834 return MODE_CLOCK_HIGH;
835 if (mode->htotal >= BIT(13))
836 return MODE_BAD_HVALUE;
837 if (mode->vtotal >= BIT(11))
838 return MODE_BAD_VVALUE;
839 return MODE_OK;
840 }
841
842 static void
843 tda998x_encoder_mode_set(struct tda998x_priv *priv,
844 struct drm_display_mode *mode,
845 struct drm_display_mode *adjusted_mode)
846 {
847 uint16_t ref_pix, ref_line, n_pix, n_line;
848 uint16_t hs_pix_s, hs_pix_e;
849 uint16_t vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
850 uint16_t vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e;
851 uint16_t vwin1_line_s, vwin1_line_e;
852 uint16_t vwin2_line_s, vwin2_line_e;
853 uint16_t de_pix_s, de_pix_e;
854 uint8_t reg, div, rep;
855
856 /*
857 * Internally TDA998x is using ITU-R BT.656 style sync but
858 * we get VESA style sync. TDA998x is using a reference pixel
859 * relative to ITU to sync to the input frame and for output
860 * sync generation. Currently, we are using reference detection
861 * from HS/VS, i.e. REFPIX/REFLINE denote frame start sync point
862 * which is position of rising VS with coincident rising HS.
863 *
864 * Now there is some issues to take care of:
865 * - HDMI data islands require sync-before-active
866 * - TDA998x register values must be > 0 to be enabled
867 * - REFLINE needs an additional offset of +1
868 * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB
869 *
870 * So we add +1 to all horizontal and vertical register values,
871 * plus an additional +3 for REFPIX as we are using RGB input only.
872 */
873 n_pix = mode->htotal;
874 n_line = mode->vtotal;
875
876 hs_pix_e = mode->hsync_end - mode->hdisplay;
877 hs_pix_s = mode->hsync_start - mode->hdisplay;
878 de_pix_e = mode->htotal;
879 de_pix_s = mode->htotal - mode->hdisplay;
880 ref_pix = 3 + hs_pix_s;
881
882 /*
883 * Attached LCD controllers may generate broken sync. Allow
884 * those to adjust the position of the rising VS edge by adding
885 * HSKEW to ref_pix.
886 */
887 if (adjusted_mode->flags & DRM_MODE_FLAG_HSKEW)
888 ref_pix += adjusted_mode->hskew;
889
890 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0) {
891 ref_line = 1 + mode->vsync_start - mode->vdisplay;
892 vwin1_line_s = mode->vtotal - mode->vdisplay - 1;
893 vwin1_line_e = vwin1_line_s + mode->vdisplay;
894 vs1_pix_s = vs1_pix_e = hs_pix_s;
895 vs1_line_s = mode->vsync_start - mode->vdisplay;
896 vs1_line_e = vs1_line_s +
897 mode->vsync_end - mode->vsync_start;
898 vwin2_line_s = vwin2_line_e = 0;
899 vs2_pix_s = vs2_pix_e = 0;
900 vs2_line_s = vs2_line_e = 0;
901 } else {
902 ref_line = 1 + (mode->vsync_start - mode->vdisplay)/2;
903 vwin1_line_s = (mode->vtotal - mode->vdisplay)/2;
904 vwin1_line_e = vwin1_line_s + mode->vdisplay/2;
905 vs1_pix_s = vs1_pix_e = hs_pix_s;
906 vs1_line_s = (mode->vsync_start - mode->vdisplay)/2;
907 vs1_line_e = vs1_line_s +
908 (mode->vsync_end - mode->vsync_start)/2;
909 vwin2_line_s = vwin1_line_s + mode->vtotal/2;
910 vwin2_line_e = vwin2_line_s + mode->vdisplay/2;
911 vs2_pix_s = vs2_pix_e = hs_pix_s + mode->htotal/2;
912 vs2_line_s = vs1_line_s + mode->vtotal/2 ;
913 vs2_line_e = vs2_line_s +
914 (mode->vsync_end - mode->vsync_start)/2;
915 }
916
917 div = 148500 / mode->clock;
918 if (div != 0) {
919 div--;
920 if (div > 3)
921 div = 3;
922 }
923
924 /* mute the audio FIFO: */
925 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
926
927 /* set HDMI HDCP mode off: */
928 reg_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS);
929 reg_clear(priv, REG_TX33, TX33_HDMI);
930 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0));
931
932 /* no pre-filter or interpolator: */
933 reg_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) |
934 HVF_CNTRL_0_INTPOL(0));
935 reg_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0));
936 reg_write(priv, REG_VIP_CNTRL_4, VIP_CNTRL_4_BLANKIT(0) |
937 VIP_CNTRL_4_BLC(0));
938
939 reg_clear(priv, REG_PLL_SERIAL_1, PLL_SERIAL_1_SRL_MAN_IZ);
940 reg_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR |
941 PLL_SERIAL_3_SRL_DE);
942 reg_write(priv, REG_SERIALIZER, 0);
943 reg_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0));
944
945 /* TODO enable pixel repeat for pixel rates less than 25Msamp/s */
946 rep = 0;
947 reg_write(priv, REG_RPT_CNTRL, 0);
948 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_VRF_CLK(0) |
949 SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
950
951 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) |
952 PLL_SERIAL_2_SRL_PR(rep));
953
954 /* set color matrix bypass flag: */
955 reg_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP |
956 MAT_CONTRL_MAT_SC(1));
957
958 /* set BIAS tmds value: */
959 reg_write(priv, REG_ANA_GENERAL, 0x09);
960
961 /*
962 * Sync on rising HSYNC/VSYNC
963 */
964 reg = VIP_CNTRL_3_SYNC_HS;
965
966 /*
967 * TDA19988 requires high-active sync at input stage,
968 * so invert low-active sync provided by master encoder here
969 */
970 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
971 reg |= VIP_CNTRL_3_H_TGL;
972 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
973 reg |= VIP_CNTRL_3_V_TGL;
974 reg_write(priv, REG_VIP_CNTRL_3, reg);
975
976 reg_write(priv, REG_VIDFORMAT, 0x00);
977 reg_write16(priv, REG_REFPIX_MSB, ref_pix);
978 reg_write16(priv, REG_REFLINE_MSB, ref_line);
979 reg_write16(priv, REG_NPIX_MSB, n_pix);
980 reg_write16(priv, REG_NLINE_MSB, n_line);
981 reg_write16(priv, REG_VS_LINE_STRT_1_MSB, vs1_line_s);
982 reg_write16(priv, REG_VS_PIX_STRT_1_MSB, vs1_pix_s);
983 reg_write16(priv, REG_VS_LINE_END_1_MSB, vs1_line_e);
984 reg_write16(priv, REG_VS_PIX_END_1_MSB, vs1_pix_e);
985 reg_write16(priv, REG_VS_LINE_STRT_2_MSB, vs2_line_s);
986 reg_write16(priv, REG_VS_PIX_STRT_2_MSB, vs2_pix_s);
987 reg_write16(priv, REG_VS_LINE_END_2_MSB, vs2_line_e);
988 reg_write16(priv, REG_VS_PIX_END_2_MSB, vs2_pix_e);
989 reg_write16(priv, REG_HS_PIX_START_MSB, hs_pix_s);
990 reg_write16(priv, REG_HS_PIX_STOP_MSB, hs_pix_e);
991 reg_write16(priv, REG_VWIN_START_1_MSB, vwin1_line_s);
992 reg_write16(priv, REG_VWIN_END_1_MSB, vwin1_line_e);
993 reg_write16(priv, REG_VWIN_START_2_MSB, vwin2_line_s);
994 reg_write16(priv, REG_VWIN_END_2_MSB, vwin2_line_e);
995 reg_write16(priv, REG_DE_START_MSB, de_pix_s);
996 reg_write16(priv, REG_DE_STOP_MSB, de_pix_e);
997
998 if (priv->rev == TDA19988) {
999 /* let incoming pixels fill the active space (if any) */
1000 reg_write(priv, REG_ENABLE_SPACE, 0x00);
1001 }
1002
1003 /*
1004 * Always generate sync polarity relative to input sync and
1005 * revert input stage toggled sync at output stage
1006 */
1007 reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN;
1008 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1009 reg |= TBG_CNTRL_1_H_TGL;
1010 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1011 reg |= TBG_CNTRL_1_V_TGL;
1012 reg_write(priv, REG_TBG_CNTRL_1, reg);
1013
1014 /* must be last register set: */
1015 reg_write(priv, REG_TBG_CNTRL_0, 0);
1016
1017 /* Only setup the info frames if the sink is HDMI */
1018 if (priv->is_hdmi_sink) {
1019 /* We need to turn HDMI HDCP stuff on to get audio through */
1020 reg &= ~TBG_CNTRL_1_DWIN_DIS;
1021 reg_write(priv, REG_TBG_CNTRL_1, reg);
1022 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1));
1023 reg_set(priv, REG_TX33, TX33_HDMI);
1024
1025 tda998x_write_avi(priv, adjusted_mode);
1026
1027 if (priv->params.audio_cfg)
1028 tda998x_configure_audio(priv, adjusted_mode,
1029 &priv->params);
1030 }
1031 }
1032
1033 static enum drm_connector_status
1034 tda998x_encoder_detect(struct tda998x_priv *priv)
1035 {
1036 uint8_t val = cec_read(priv, REG_CEC_RXSHPDLEV);
1037
1038 return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected :
1039 connector_status_disconnected;
1040 }
1041
1042 static int read_edid_block(void *data, u8 *buf, unsigned int blk, size_t length)
1043 {
1044 struct tda998x_priv *priv = data;
1045 uint8_t offset, segptr;
1046 int ret, i;
1047
1048 offset = (blk & 1) ? 128 : 0;
1049 segptr = blk / 2;
1050
1051 reg_write(priv, REG_DDC_ADDR, 0xa0);
1052 reg_write(priv, REG_DDC_OFFS, offset);
1053 reg_write(priv, REG_DDC_SEGM_ADDR, 0x60);
1054 reg_write(priv, REG_DDC_SEGM, segptr);
1055
1056 /* enable reading EDID: */
1057 priv->wq_edid_wait = 1;
1058 reg_write(priv, REG_EDID_CTRL, 0x1);
1059
1060 /* flag must be cleared by sw: */
1061 reg_write(priv, REG_EDID_CTRL, 0x0);
1062
1063 /* wait for block read to complete: */
1064 if (priv->hdmi->irq) {
1065 i = wait_event_timeout(priv->wq_edid,
1066 !priv->wq_edid_wait,
1067 msecs_to_jiffies(100));
1068 if (i < 0) {
1069 dev_err(&priv->hdmi->dev, "read edid wait err %d\n", i);
1070 return i;
1071 }
1072 } else {
1073 for (i = 100; i > 0; i--) {
1074 msleep(1);
1075 ret = reg_read(priv, REG_INT_FLAGS_2);
1076 if (ret < 0)
1077 return ret;
1078 if (ret & INT_FLAGS_2_EDID_BLK_RD)
1079 break;
1080 }
1081 }
1082
1083 if (i == 0) {
1084 dev_err(&priv->hdmi->dev, "read edid timeout\n");
1085 return -ETIMEDOUT;
1086 }
1087
1088 ret = reg_read_range(priv, REG_EDID_DATA_0, buf, length);
1089 if (ret != length) {
1090 dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n",
1091 blk, ret);
1092 return ret;
1093 }
1094
1095 return 0;
1096 }
1097
1098 static int
1099 tda998x_encoder_get_modes(struct tda998x_priv *priv,
1100 struct drm_connector *connector)
1101 {
1102 struct edid *edid;
1103 int n;
1104
1105 if (priv->rev == TDA19988)
1106 reg_clear(priv, REG_TX4, TX4_PD_RAM);
1107
1108 edid = drm_do_get_edid(connector, read_edid_block, priv);
1109
1110 if (priv->rev == TDA19988)
1111 reg_set(priv, REG_TX4, TX4_PD_RAM);
1112
1113 if (!edid) {
1114 dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
1115 return 0;
1116 }
1117
1118 drm_mode_connector_update_edid_property(connector, edid);
1119 n = drm_add_edid_modes(connector, edid);
1120 priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
1121 kfree(edid);
1122
1123 return n;
1124 }
1125
1126 static void tda998x_encoder_set_polling(struct tda998x_priv *priv,
1127 struct drm_connector *connector)
1128 {
1129 if (priv->hdmi->irq)
1130 connector->polled = DRM_CONNECTOR_POLL_HPD;
1131 else
1132 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
1133 DRM_CONNECTOR_POLL_DISCONNECT;
1134 }
1135
1136 static int
1137 tda998x_encoder_set_property(struct drm_encoder *encoder,
1138 struct drm_connector *connector,
1139 struct drm_property *property,
1140 uint64_t val)
1141 {
1142 DBG("");
1143 return 0;
1144 }
1145
1146 static void tda998x_destroy(struct tda998x_priv *priv)
1147 {
1148 /* disable all IRQs and free the IRQ handler */
1149 cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1150 reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1151 if (priv->hdmi->irq) {
1152 free_irq(priv->hdmi->irq, priv);
1153 cancel_delayed_work_sync(&priv->dwork);
1154 }
1155
1156 i2c_unregister_device(priv->cec);
1157 }
1158
1159 /* Slave encoder support */
1160
1161 static void
1162 tda998x_encoder_slave_set_config(struct drm_encoder *encoder, void *params)
1163 {
1164 tda998x_encoder_set_config(to_tda998x_priv(encoder), params);
1165 }
1166
1167 static void tda998x_encoder_slave_destroy(struct drm_encoder *encoder)
1168 {
1169 struct tda998x_priv *priv = to_tda998x_priv(encoder);
1170
1171 tda998x_destroy(priv);
1172 drm_i2c_encoder_destroy(encoder);
1173 kfree(priv);
1174 }
1175
1176 static void tda998x_encoder_slave_dpms(struct drm_encoder *encoder, int mode)
1177 {
1178 tda998x_encoder_dpms(to_tda998x_priv(encoder), mode);
1179 }
1180
1181 static int tda998x_encoder_slave_mode_valid(struct drm_encoder *encoder,
1182 struct drm_display_mode *mode)
1183 {
1184 return tda998x_encoder_mode_valid(to_tda998x_priv(encoder), mode);
1185 }
1186
1187 static void
1188 tda998x_encoder_slave_mode_set(struct drm_encoder *encoder,
1189 struct drm_display_mode *mode,
1190 struct drm_display_mode *adjusted_mode)
1191 {
1192 tda998x_encoder_mode_set(to_tda998x_priv(encoder), mode, adjusted_mode);
1193 }
1194
1195 static enum drm_connector_status
1196 tda998x_encoder_slave_detect(struct drm_encoder *encoder,
1197 struct drm_connector *connector)
1198 {
1199 return tda998x_encoder_detect(to_tda998x_priv(encoder));
1200 }
1201
1202 static int tda998x_encoder_slave_get_modes(struct drm_encoder *encoder,
1203 struct drm_connector *connector)
1204 {
1205 return tda998x_encoder_get_modes(to_tda998x_priv(encoder), connector);
1206 }
1207
1208 static int
1209 tda998x_encoder_slave_create_resources(struct drm_encoder *encoder,
1210 struct drm_connector *connector)
1211 {
1212 tda998x_encoder_set_polling(to_tda998x_priv(encoder), connector);
1213 return 0;
1214 }
1215
1216 static struct drm_encoder_slave_funcs tda998x_encoder_slave_funcs = {
1217 .set_config = tda998x_encoder_slave_set_config,
1218 .destroy = tda998x_encoder_slave_destroy,
1219 .dpms = tda998x_encoder_slave_dpms,
1220 .save = tda998x_encoder_save,
1221 .restore = tda998x_encoder_restore,
1222 .mode_fixup = tda998x_encoder_mode_fixup,
1223 .mode_valid = tda998x_encoder_slave_mode_valid,
1224 .mode_set = tda998x_encoder_slave_mode_set,
1225 .detect = tda998x_encoder_slave_detect,
1226 .get_modes = tda998x_encoder_slave_get_modes,
1227 .create_resources = tda998x_encoder_slave_create_resources,
1228 .set_property = tda998x_encoder_set_property,
1229 };
1230
1231 /* I2C driver functions */
1232
1233 static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
1234 {
1235 struct device_node *np = client->dev.of_node;
1236 u32 video;
1237 int rev_lo, rev_hi, ret;
1238 unsigned short cec_addr;
1239
1240 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
1241 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
1242 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
1243
1244 priv->current_page = 0xff;
1245 priv->hdmi = client;
1246 /* CEC I2C address bound to TDA998x I2C addr by configuration pins */
1247 cec_addr = 0x34 + (client->addr & 0x03);
1248 priv->cec = i2c_new_dummy(client->adapter, cec_addr);
1249 if (!priv->cec)
1250 return -ENODEV;
1251
1252 priv->dpms = DRM_MODE_DPMS_OFF;
1253
1254 mutex_init(&priv->mutex); /* protect the page access */
1255
1256 /* wake up the device: */
1257 cec_write(priv, REG_CEC_ENAMODS,
1258 CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
1259
1260 tda998x_reset(priv);
1261
1262 /* read version: */
1263 rev_lo = reg_read(priv, REG_VERSION_LSB);
1264 rev_hi = reg_read(priv, REG_VERSION_MSB);
1265 if (rev_lo < 0 || rev_hi < 0) {
1266 ret = rev_lo < 0 ? rev_lo : rev_hi;
1267 goto fail;
1268 }
1269
1270 priv->rev = rev_lo | rev_hi << 8;
1271
1272 /* mask off feature bits: */
1273 priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */
1274
1275 switch (priv->rev) {
1276 case TDA9989N2:
1277 dev_info(&client->dev, "found TDA9989 n2");
1278 break;
1279 case TDA19989:
1280 dev_info(&client->dev, "found TDA19989");
1281 break;
1282 case TDA19989N2:
1283 dev_info(&client->dev, "found TDA19989 n2");
1284 break;
1285 case TDA19988:
1286 dev_info(&client->dev, "found TDA19988");
1287 break;
1288 default:
1289 dev_err(&client->dev, "found unsupported device: %04x\n",
1290 priv->rev);
1291 goto fail;
1292 }
1293
1294 /* after reset, enable DDC: */
1295 reg_write(priv, REG_DDC_DISABLE, 0x00);
1296
1297 /* set clock on DDC channel: */
1298 reg_write(priv, REG_TX3, 39);
1299
1300 /* if necessary, disable multi-master: */
1301 if (priv->rev == TDA19989)
1302 reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
1303
1304 cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
1305 CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
1306
1307 /* initialize the optional IRQ */
1308 if (client->irq) {
1309 int irqf_trigger;
1310
1311 /* init read EDID waitqueue and HDP work */
1312 init_waitqueue_head(&priv->wq_edid);
1313 INIT_DELAYED_WORK(&priv->dwork, tda998x_hpd);
1314
1315 /* clear pending interrupts */
1316 reg_read(priv, REG_INT_FLAGS_0);
1317 reg_read(priv, REG_INT_FLAGS_1);
1318 reg_read(priv, REG_INT_FLAGS_2);
1319
1320 irqf_trigger =
1321 irqd_get_trigger_type(irq_get_irq_data(client->irq));
1322 ret = request_threaded_irq(client->irq, NULL,
1323 tda998x_irq_thread,
1324 irqf_trigger | IRQF_ONESHOT,
1325 "tda998x", priv);
1326 if (ret) {
1327 dev_err(&client->dev,
1328 "failed to request IRQ#%u: %d\n",
1329 client->irq, ret);
1330 goto fail;
1331 }
1332
1333 /* enable HPD irq */
1334 cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
1335 }
1336
1337 /* enable EDID read irq: */
1338 reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1339
1340 if (!np)
1341 return 0; /* non-DT */
1342
1343 /* get the optional video properties */
1344 ret = of_property_read_u32(np, "video-ports", &video);
1345 if (ret == 0) {
1346 priv->vip_cntrl_0 = video >> 16;
1347 priv->vip_cntrl_1 = video >> 8;
1348 priv->vip_cntrl_2 = video;
1349 }
1350
1351 return 0;
1352
1353 fail:
1354 /* if encoder_init fails, the encoder slave is never registered,
1355 * so cleanup here:
1356 */
1357 if (priv->cec)
1358 i2c_unregister_device(priv->cec);
1359 return -ENXIO;
1360 }
1361
1362 static int tda998x_encoder_init(struct i2c_client *client,
1363 struct drm_device *dev,
1364 struct drm_encoder_slave *encoder_slave)
1365 {
1366 struct tda998x_priv *priv;
1367 int ret;
1368
1369 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1370 if (!priv)
1371 return -ENOMEM;
1372
1373 priv->encoder = &encoder_slave->base;
1374
1375 ret = tda998x_create(client, priv);
1376 if (ret) {
1377 kfree(priv);
1378 return ret;
1379 }
1380
1381 encoder_slave->slave_priv = priv;
1382 encoder_slave->slave_funcs = &tda998x_encoder_slave_funcs;
1383
1384 return 0;
1385 }
1386
1387 struct tda998x_priv2 {
1388 struct tda998x_priv base;
1389 struct drm_encoder encoder;
1390 struct drm_connector connector;
1391 };
1392
1393 #define conn_to_tda998x_priv2(x) \
1394 container_of(x, struct tda998x_priv2, connector);
1395
1396 #define enc_to_tda998x_priv2(x) \
1397 container_of(x, struct tda998x_priv2, encoder);
1398
1399 static void tda998x_encoder2_dpms(struct drm_encoder *encoder, int mode)
1400 {
1401 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1402
1403 tda998x_encoder_dpms(&priv->base, mode);
1404 }
1405
1406 static void tda998x_encoder_prepare(struct drm_encoder *encoder)
1407 {
1408 tda998x_encoder2_dpms(encoder, DRM_MODE_DPMS_OFF);
1409 }
1410
1411 static void tda998x_encoder_commit(struct drm_encoder *encoder)
1412 {
1413 tda998x_encoder2_dpms(encoder, DRM_MODE_DPMS_ON);
1414 }
1415
1416 static void tda998x_encoder2_mode_set(struct drm_encoder *encoder,
1417 struct drm_display_mode *mode,
1418 struct drm_display_mode *adjusted_mode)
1419 {
1420 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1421
1422 tda998x_encoder_mode_set(&priv->base, mode, adjusted_mode);
1423 }
1424
1425 static const struct drm_encoder_helper_funcs tda998x_encoder_helper_funcs = {
1426 .dpms = tda998x_encoder2_dpms,
1427 .save = tda998x_encoder_save,
1428 .restore = tda998x_encoder_restore,
1429 .mode_fixup = tda998x_encoder_mode_fixup,
1430 .prepare = tda998x_encoder_prepare,
1431 .commit = tda998x_encoder_commit,
1432 .mode_set = tda998x_encoder2_mode_set,
1433 };
1434
1435 static void tda998x_encoder_destroy(struct drm_encoder *encoder)
1436 {
1437 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1438
1439 tda998x_destroy(&priv->base);
1440 drm_encoder_cleanup(encoder);
1441 }
1442
1443 static const struct drm_encoder_funcs tda998x_encoder_funcs = {
1444 .destroy = tda998x_encoder_destroy,
1445 };
1446
1447 static int tda998x_connector_get_modes(struct drm_connector *connector)
1448 {
1449 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1450
1451 return tda998x_encoder_get_modes(&priv->base, connector);
1452 }
1453
1454 static int tda998x_connector_mode_valid(struct drm_connector *connector,
1455 struct drm_display_mode *mode)
1456 {
1457 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1458
1459 return tda998x_encoder_mode_valid(&priv->base, mode);
1460 }
1461
1462 static struct drm_encoder *
1463 tda998x_connector_best_encoder(struct drm_connector *connector)
1464 {
1465 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1466
1467 return &priv->encoder;
1468 }
1469
1470 static
1471 const struct drm_connector_helper_funcs tda998x_connector_helper_funcs = {
1472 .get_modes = tda998x_connector_get_modes,
1473 .mode_valid = tda998x_connector_mode_valid,
1474 .best_encoder = tda998x_connector_best_encoder,
1475 };
1476
1477 static enum drm_connector_status
1478 tda998x_connector_detect(struct drm_connector *connector, bool force)
1479 {
1480 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1481
1482 return tda998x_encoder_detect(&priv->base);
1483 }
1484
1485 static void tda998x_connector_destroy(struct drm_connector *connector)
1486 {
1487 drm_connector_unregister(connector);
1488 drm_connector_cleanup(connector);
1489 }
1490
1491 static const struct drm_connector_funcs tda998x_connector_funcs = {
1492 .dpms = drm_helper_connector_dpms,
1493 .fill_modes = drm_helper_probe_single_connector_modes,
1494 .detect = tda998x_connector_detect,
1495 .destroy = tda998x_connector_destroy,
1496 };
1497
1498 static int tda998x_bind(struct device *dev, struct device *master, void *data)
1499 {
1500 struct tda998x_encoder_params *params = dev->platform_data;
1501 struct i2c_client *client = to_i2c_client(dev);
1502 struct drm_device *drm = data;
1503 struct tda998x_priv2 *priv;
1504 uint32_t crtcs = 0;
1505 int ret;
1506
1507 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1508 if (!priv)
1509 return -ENOMEM;
1510
1511 dev_set_drvdata(dev, priv);
1512
1513 if (dev->of_node)
1514 crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
1515
1516 /* If no CRTCs were found, fall back to our old behaviour */
1517 if (crtcs == 0) {
1518 dev_warn(dev, "Falling back to first CRTC\n");
1519 crtcs = 1 << 0;
1520 }
1521
1522 priv->base.encoder = &priv->encoder;
1523 priv->connector.interlace_allowed = 1;
1524 priv->encoder.possible_crtcs = crtcs;
1525
1526 ret = tda998x_create(client, &priv->base);
1527 if (ret)
1528 return ret;
1529
1530 if (!dev->of_node && params)
1531 tda998x_encoder_set_config(&priv->base, params);
1532
1533 tda998x_encoder_set_polling(&priv->base, &priv->connector);
1534
1535 drm_encoder_helper_add(&priv->encoder, &tda998x_encoder_helper_funcs);
1536 ret = drm_encoder_init(drm, &priv->encoder, &tda998x_encoder_funcs,
1537 DRM_MODE_ENCODER_TMDS);
1538 if (ret)
1539 goto err_encoder;
1540
1541 drm_connector_helper_add(&priv->connector,
1542 &tda998x_connector_helper_funcs);
1543 ret = drm_connector_init(drm, &priv->connector,
1544 &tda998x_connector_funcs,
1545 DRM_MODE_CONNECTOR_HDMIA);
1546 if (ret)
1547 goto err_connector;
1548
1549 ret = drm_connector_register(&priv->connector);
1550 if (ret)
1551 goto err_sysfs;
1552
1553 priv->connector.encoder = &priv->encoder;
1554 drm_mode_connector_attach_encoder(&priv->connector, &priv->encoder);
1555
1556 return 0;
1557
1558 err_sysfs:
1559 drm_connector_cleanup(&priv->connector);
1560 err_connector:
1561 drm_encoder_cleanup(&priv->encoder);
1562 err_encoder:
1563 tda998x_destroy(&priv->base);
1564 return ret;
1565 }
1566
1567 static void tda998x_unbind(struct device *dev, struct device *master,
1568 void *data)
1569 {
1570 struct tda998x_priv2 *priv = dev_get_drvdata(dev);
1571
1572 drm_connector_cleanup(&priv->connector);
1573 drm_encoder_cleanup(&priv->encoder);
1574 tda998x_destroy(&priv->base);
1575 }
1576
1577 static const struct component_ops tda998x_ops = {
1578 .bind = tda998x_bind,
1579 .unbind = tda998x_unbind,
1580 };
1581
1582 static int
1583 tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
1584 {
1585 return component_add(&client->dev, &tda998x_ops);
1586 }
1587
1588 static int tda998x_remove(struct i2c_client *client)
1589 {
1590 component_del(&client->dev, &tda998x_ops);
1591 return 0;
1592 }
1593
1594 #ifdef CONFIG_OF
1595 static const struct of_device_id tda998x_dt_ids[] = {
1596 { .compatible = "nxp,tda998x", },
1597 { }
1598 };
1599 MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
1600 #endif
1601
1602 static struct i2c_device_id tda998x_ids[] = {
1603 { "tda998x", 0 },
1604 { }
1605 };
1606 MODULE_DEVICE_TABLE(i2c, tda998x_ids);
1607
1608 static struct drm_i2c_encoder_driver tda998x_driver = {
1609 .i2c_driver = {
1610 .probe = tda998x_probe,
1611 .remove = tda998x_remove,
1612 .driver = {
1613 .name = "tda998x",
1614 .of_match_table = of_match_ptr(tda998x_dt_ids),
1615 },
1616 .id_table = tda998x_ids,
1617 },
1618 .encoder_init = tda998x_encoder_init,
1619 };
1620
1621 /* Module initialization */
1622
1623 static int __init
1624 tda998x_init(void)
1625 {
1626 DBG("");
1627 return drm_i2c_encoder_register(THIS_MODULE, &tda998x_driver);
1628 }
1629
1630 static void __exit
1631 tda998x_exit(void)
1632 {
1633 DBG("");
1634 drm_i2c_encoder_unregister(&tda998x_driver);
1635 }
1636
1637 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1638 MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder");
1639 MODULE_LICENSE("GPL");
1640
1641 module_init(tda998x_init);
1642 module_exit(tda998x_exit);
Linux with added FPC-III support