2 * Copyright (C) 2012 Texas Instruments
3 * Author: Rob Clark <robdclark@gmail.com>
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.
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
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/>.
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>
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>
31 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
34 struct i2c_client *cec;
35 struct i2c_client *hdmi;
44 struct tda998x_encoder_params params;
46 wait_queue_head_t wq_edid;
47 volatile int wq_edid_wait;
48 struct drm_encoder *encoder;
50 struct work_struct detect_work;
51 struct timer_list edid_delay_timer;
52 wait_queue_head_t edid_delay_waitq;
53 bool edid_delay_active;
56 #define to_tda998x_priv(x) ((struct tda998x_priv *)to_encoder_slave(x)->slave_priv)
58 /* The TDA9988 series of devices use a paged register scheme.. to simplify
59 * things we encode the page # in upper bits of the register #. To read/
60 * write a given register, we need to make sure CURPAGE register is set
61 * appropriately. Which implies reads/writes are not atomic. Fun!
64 #define REG(page, addr) (((page) << 8) | (addr))
65 #define REG2ADDR(reg) ((reg) & 0xff)
66 #define REG2PAGE(reg) (((reg) >> 8) & 0xff)
68 #define REG_CURPAGE 0xff /* write */
71 /* Page 00h: General Control */
72 #define REG_VERSION_LSB REG(0x00, 0x00) /* read */
73 #define REG_MAIN_CNTRL0 REG(0x00, 0x01) /* read/write */
74 # define MAIN_CNTRL0_SR (1 << 0)
75 # define MAIN_CNTRL0_DECS (1 << 1)
76 # define MAIN_CNTRL0_DEHS (1 << 2)
77 # define MAIN_CNTRL0_CECS (1 << 3)
78 # define MAIN_CNTRL0_CEHS (1 << 4)
79 # define MAIN_CNTRL0_SCALER (1 << 7)
80 #define REG_VERSION_MSB REG(0x00, 0x02) /* read */
81 #define REG_SOFTRESET REG(0x00, 0x0a) /* write */
82 # define SOFTRESET_AUDIO (1 << 0)
83 # define SOFTRESET_I2C_MASTER (1 << 1)
84 #define REG_DDC_DISABLE REG(0x00, 0x0b) /* read/write */
85 #define REG_CCLK_ON REG(0x00, 0x0c) /* read/write */
86 #define REG_I2C_MASTER REG(0x00, 0x0d) /* read/write */
87 # define I2C_MASTER_DIS_MM (1 << 0)
88 # define I2C_MASTER_DIS_FILT (1 << 1)
89 # define I2C_MASTER_APP_STRT_LAT (1 << 2)
90 #define REG_FEAT_POWERDOWN REG(0x00, 0x0e) /* read/write */
91 # define FEAT_POWERDOWN_SPDIF (1 << 3)
92 #define REG_INT_FLAGS_0 REG(0x00, 0x0f) /* read/write */
93 #define REG_INT_FLAGS_1 REG(0x00, 0x10) /* read/write */
94 #define REG_INT_FLAGS_2 REG(0x00, 0x11) /* read/write */
95 # define INT_FLAGS_2_EDID_BLK_RD (1 << 1)
96 #define REG_ENA_ACLK REG(0x00, 0x16) /* read/write */
97 #define REG_ENA_VP_0 REG(0x00, 0x18) /* read/write */
98 #define REG_ENA_VP_1 REG(0x00, 0x19) /* read/write */
99 #define REG_ENA_VP_2 REG(0x00, 0x1a) /* read/write */
100 #define REG_ENA_AP REG(0x00, 0x1e) /* read/write */
101 #define REG_VIP_CNTRL_0 REG(0x00, 0x20) /* write */
102 # define VIP_CNTRL_0_MIRR_A (1 << 7)
103 # define VIP_CNTRL_0_SWAP_A(x) (((x) & 7) << 4)
104 # define VIP_CNTRL_0_MIRR_B (1 << 3)
105 # define VIP_CNTRL_0_SWAP_B(x) (((x) & 7) << 0)
106 #define REG_VIP_CNTRL_1 REG(0x00, 0x21) /* write */
107 # define VIP_CNTRL_1_MIRR_C (1 << 7)
108 # define VIP_CNTRL_1_SWAP_C(x) (((x) & 7) << 4)
109 # define VIP_CNTRL_1_MIRR_D (1 << 3)
110 # define VIP_CNTRL_1_SWAP_D(x) (((x) & 7) << 0)
111 #define REG_VIP_CNTRL_2 REG(0x00, 0x22) /* write */
112 # define VIP_CNTRL_2_MIRR_E (1 << 7)
113 # define VIP_CNTRL_2_SWAP_E(x) (((x) & 7) << 4)
114 # define VIP_CNTRL_2_MIRR_F (1 << 3)
115 # define VIP_CNTRL_2_SWAP_F(x) (((x) & 7) << 0)
116 #define REG_VIP_CNTRL_3 REG(0x00, 0x23) /* write */
117 # define VIP_CNTRL_3_X_TGL (1 << 0)
118 # define VIP_CNTRL_3_H_TGL (1 << 1)
119 # define VIP_CNTRL_3_V_TGL (1 << 2)
120 # define VIP_CNTRL_3_EMB (1 << 3)
121 # define VIP_CNTRL_3_SYNC_DE (1 << 4)
122 # define VIP_CNTRL_3_SYNC_HS (1 << 5)
123 # define VIP_CNTRL_3_DE_INT (1 << 6)
124 # define VIP_CNTRL_3_EDGE (1 << 7)
125 #define REG_VIP_CNTRL_4 REG(0x00, 0x24) /* write */
126 # define VIP_CNTRL_4_BLC(x) (((x) & 3) << 0)
127 # define VIP_CNTRL_4_BLANKIT(x) (((x) & 3) << 2)
128 # define VIP_CNTRL_4_CCIR656 (1 << 4)
129 # define VIP_CNTRL_4_656_ALT (1 << 5)
130 # define VIP_CNTRL_4_TST_656 (1 << 6)
131 # define VIP_CNTRL_4_TST_PAT (1 << 7)
132 #define REG_VIP_CNTRL_5 REG(0x00, 0x25) /* write */
133 # define VIP_CNTRL_5_CKCASE (1 << 0)
134 # define VIP_CNTRL_5_SP_CNT(x) (((x) & 3) << 1)
135 #define REG_MUX_AP REG(0x00, 0x26) /* read/write */
136 # define MUX_AP_SELECT_I2S 0x64
137 # define MUX_AP_SELECT_SPDIF 0x40
138 #define REG_MUX_VP_VIP_OUT REG(0x00, 0x27) /* read/write */
139 #define REG_MAT_CONTRL REG(0x00, 0x80) /* write */
140 # define MAT_CONTRL_MAT_SC(x) (((x) & 3) << 0)
141 # define MAT_CONTRL_MAT_BP (1 << 2)
142 #define REG_VIDFORMAT REG(0x00, 0xa0) /* write */
143 #define REG_REFPIX_MSB REG(0x00, 0xa1) /* write */
144 #define REG_REFPIX_LSB REG(0x00, 0xa2) /* write */
145 #define REG_REFLINE_MSB REG(0x00, 0xa3) /* write */
146 #define REG_REFLINE_LSB REG(0x00, 0xa4) /* write */
147 #define REG_NPIX_MSB REG(0x00, 0xa5) /* write */
148 #define REG_NPIX_LSB REG(0x00, 0xa6) /* write */
149 #define REG_NLINE_MSB REG(0x00, 0xa7) /* write */
150 #define REG_NLINE_LSB REG(0x00, 0xa8) /* write */
151 #define REG_VS_LINE_STRT_1_MSB REG(0x00, 0xa9) /* write */
152 #define REG_VS_LINE_STRT_1_LSB REG(0x00, 0xaa) /* write */
153 #define REG_VS_PIX_STRT_1_MSB REG(0x00, 0xab) /* write */
154 #define REG_VS_PIX_STRT_1_LSB REG(0x00, 0xac) /* write */
155 #define REG_VS_LINE_END_1_MSB REG(0x00, 0xad) /* write */
156 #define REG_VS_LINE_END_1_LSB REG(0x00, 0xae) /* write */
157 #define REG_VS_PIX_END_1_MSB REG(0x00, 0xaf) /* write */
158 #define REG_VS_PIX_END_1_LSB REG(0x00, 0xb0) /* write */
159 #define REG_VS_LINE_STRT_2_MSB REG(0x00, 0xb1) /* write */
160 #define REG_VS_LINE_STRT_2_LSB REG(0x00, 0xb2) /* write */
161 #define REG_VS_PIX_STRT_2_MSB REG(0x00, 0xb3) /* write */
162 #define REG_VS_PIX_STRT_2_LSB REG(0x00, 0xb4) /* write */
163 #define REG_VS_LINE_END_2_MSB REG(0x00, 0xb5) /* write */
164 #define REG_VS_LINE_END_2_LSB REG(0x00, 0xb6) /* write */
165 #define REG_VS_PIX_END_2_MSB REG(0x00, 0xb7) /* write */
166 #define REG_VS_PIX_END_2_LSB REG(0x00, 0xb8) /* write */
167 #define REG_HS_PIX_START_MSB REG(0x00, 0xb9) /* write */
168 #define REG_HS_PIX_START_LSB REG(0x00, 0xba) /* write */
169 #define REG_HS_PIX_STOP_MSB REG(0x00, 0xbb) /* write */
170 #define REG_HS_PIX_STOP_LSB REG(0x00, 0xbc) /* write */
171 #define REG_VWIN_START_1_MSB REG(0x00, 0xbd) /* write */
172 #define REG_VWIN_START_1_LSB REG(0x00, 0xbe) /* write */
173 #define REG_VWIN_END_1_MSB REG(0x00, 0xbf) /* write */
174 #define REG_VWIN_END_1_LSB REG(0x00, 0xc0) /* write */
175 #define REG_VWIN_START_2_MSB REG(0x00, 0xc1) /* write */
176 #define REG_VWIN_START_2_LSB REG(0x00, 0xc2) /* write */
177 #define REG_VWIN_END_2_MSB REG(0x00, 0xc3) /* write */
178 #define REG_VWIN_END_2_LSB REG(0x00, 0xc4) /* write */
179 #define REG_DE_START_MSB REG(0x00, 0xc5) /* write */
180 #define REG_DE_START_LSB REG(0x00, 0xc6) /* write */
181 #define REG_DE_STOP_MSB REG(0x00, 0xc7) /* write */
182 #define REG_DE_STOP_LSB REG(0x00, 0xc8) /* write */
183 #define REG_TBG_CNTRL_0 REG(0x00, 0xca) /* write */
184 # define TBG_CNTRL_0_TOP_TGL (1 << 0)
185 # define TBG_CNTRL_0_TOP_SEL (1 << 1)
186 # define TBG_CNTRL_0_DE_EXT (1 << 2)
187 # define TBG_CNTRL_0_TOP_EXT (1 << 3)
188 # define TBG_CNTRL_0_FRAME_DIS (1 << 5)
189 # define TBG_CNTRL_0_SYNC_MTHD (1 << 6)
190 # define TBG_CNTRL_0_SYNC_ONCE (1 << 7)
191 #define REG_TBG_CNTRL_1 REG(0x00, 0xcb) /* write */
192 # define TBG_CNTRL_1_H_TGL (1 << 0)
193 # define TBG_CNTRL_1_V_TGL (1 << 1)
194 # define TBG_CNTRL_1_TGL_EN (1 << 2)
195 # define TBG_CNTRL_1_X_EXT (1 << 3)
196 # define TBG_CNTRL_1_H_EXT (1 << 4)
197 # define TBG_CNTRL_1_V_EXT (1 << 5)
198 # define TBG_CNTRL_1_DWIN_DIS (1 << 6)
199 #define REG_ENABLE_SPACE REG(0x00, 0xd6) /* write */
200 #define REG_HVF_CNTRL_0 REG(0x00, 0xe4) /* write */
201 # define HVF_CNTRL_0_SM (1 << 7)
202 # define HVF_CNTRL_0_RWB (1 << 6)
203 # define HVF_CNTRL_0_PREFIL(x) (((x) & 3) << 2)
204 # define HVF_CNTRL_0_INTPOL(x) (((x) & 3) << 0)
205 #define REG_HVF_CNTRL_1 REG(0x00, 0xe5) /* write */
206 # define HVF_CNTRL_1_FOR (1 << 0)
207 # define HVF_CNTRL_1_YUVBLK (1 << 1)
208 # define HVF_CNTRL_1_VQR(x) (((x) & 3) << 2)
209 # define HVF_CNTRL_1_PAD(x) (((x) & 3) << 4)
210 # define HVF_CNTRL_1_SEMI_PLANAR (1 << 6)
211 #define REG_RPT_CNTRL REG(0x00, 0xf0) /* write */
212 #define REG_I2S_FORMAT REG(0x00, 0xfc) /* read/write */
213 # define I2S_FORMAT(x) (((x) & 3) << 0)
214 #define REG_AIP_CLKSEL REG(0x00, 0xfd) /* write */
215 # define AIP_CLKSEL_AIP_SPDIF (0 << 3)
216 # define AIP_CLKSEL_AIP_I2S (1 << 3)
217 # define AIP_CLKSEL_FS_ACLK (0 << 0)
218 # define AIP_CLKSEL_FS_MCLK (1 << 0)
219 # define AIP_CLKSEL_FS_FS64SPDIF (2 << 0)
221 /* Page 02h: PLL settings */
222 #define REG_PLL_SERIAL_1 REG(0x02, 0x00) /* read/write */
223 # define PLL_SERIAL_1_SRL_FDN (1 << 0)
224 # define PLL_SERIAL_1_SRL_IZ(x) (((x) & 3) << 1)
225 # define PLL_SERIAL_1_SRL_MAN_IZ (1 << 6)
226 #define REG_PLL_SERIAL_2 REG(0x02, 0x01) /* read/write */
227 # define PLL_SERIAL_2_SRL_NOSC(x) ((x) << 0)
228 # define PLL_SERIAL_2_SRL_PR(x) (((x) & 0xf) << 4)
229 #define REG_PLL_SERIAL_3 REG(0x02, 0x02) /* read/write */
230 # define PLL_SERIAL_3_SRL_CCIR (1 << 0)
231 # define PLL_SERIAL_3_SRL_DE (1 << 2)
232 # define PLL_SERIAL_3_SRL_PXIN_SEL (1 << 4)
233 #define REG_SERIALIZER REG(0x02, 0x03) /* read/write */
234 #define REG_BUFFER_OUT REG(0x02, 0x04) /* read/write */
235 #define REG_PLL_SCG1 REG(0x02, 0x05) /* read/write */
236 #define REG_PLL_SCG2 REG(0x02, 0x06) /* read/write */
237 #define REG_PLL_SCGN1 REG(0x02, 0x07) /* read/write */
238 #define REG_PLL_SCGN2 REG(0x02, 0x08) /* read/write */
239 #define REG_PLL_SCGR1 REG(0x02, 0x09) /* read/write */
240 #define REG_PLL_SCGR2 REG(0x02, 0x0a) /* read/write */
241 #define REG_AUDIO_DIV REG(0x02, 0x0e) /* read/write */
242 # define AUDIO_DIV_SERCLK_1 0
243 # define AUDIO_DIV_SERCLK_2 1
244 # define AUDIO_DIV_SERCLK_4 2
245 # define AUDIO_DIV_SERCLK_8 3
246 # define AUDIO_DIV_SERCLK_16 4
247 # define AUDIO_DIV_SERCLK_32 5
248 #define REG_SEL_CLK REG(0x02, 0x11) /* read/write */
249 # define SEL_CLK_SEL_CLK1 (1 << 0)
250 # define SEL_CLK_SEL_VRF_CLK(x) (((x) & 3) << 1)
251 # define SEL_CLK_ENA_SC_CLK (1 << 3)
252 #define REG_ANA_GENERAL REG(0x02, 0x12) /* read/write */
255 /* Page 09h: EDID Control */
256 #define REG_EDID_DATA_0 REG(0x09, 0x00) /* read */
257 /* next 127 successive registers are the EDID block */
258 #define REG_EDID_CTRL REG(0x09, 0xfa) /* read/write */
259 #define REG_DDC_ADDR REG(0x09, 0xfb) /* read/write */
260 #define REG_DDC_OFFS REG(0x09, 0xfc) /* read/write */
261 #define REG_DDC_SEGM_ADDR REG(0x09, 0xfd) /* read/write */
262 #define REG_DDC_SEGM REG(0x09, 0xfe) /* read/write */
265 /* Page 10h: information frames and packets */
266 #define REG_IF1_HB0 REG(0x10, 0x20) /* read/write */
267 #define REG_IF2_HB0 REG(0x10, 0x40) /* read/write */
268 #define REG_IF3_HB0 REG(0x10, 0x60) /* read/write */
269 #define REG_IF4_HB0 REG(0x10, 0x80) /* read/write */
270 #define REG_IF5_HB0 REG(0x10, 0xa0) /* read/write */
273 /* Page 11h: audio settings and content info packets */
274 #define REG_AIP_CNTRL_0 REG(0x11, 0x00) /* read/write */
275 # define AIP_CNTRL_0_RST_FIFO (1 << 0)
276 # define AIP_CNTRL_0_SWAP (1 << 1)
277 # define AIP_CNTRL_0_LAYOUT (1 << 2)
278 # define AIP_CNTRL_0_ACR_MAN (1 << 5)
279 # define AIP_CNTRL_0_RST_CTS (1 << 6)
280 #define REG_CA_I2S REG(0x11, 0x01) /* read/write */
281 # define CA_I2S_CA_I2S(x) (((x) & 31) << 0)
282 # define CA_I2S_HBR_CHSTAT (1 << 6)
283 #define REG_LATENCY_RD REG(0x11, 0x04) /* read/write */
284 #define REG_ACR_CTS_0 REG(0x11, 0x05) /* read/write */
285 #define REG_ACR_CTS_1 REG(0x11, 0x06) /* read/write */
286 #define REG_ACR_CTS_2 REG(0x11, 0x07) /* read/write */
287 #define REG_ACR_N_0 REG(0x11, 0x08) /* read/write */
288 #define REG_ACR_N_1 REG(0x11, 0x09) /* read/write */
289 #define REG_ACR_N_2 REG(0x11, 0x0a) /* read/write */
290 #define REG_CTS_N REG(0x11, 0x0c) /* read/write */
291 # define CTS_N_K(x) (((x) & 7) << 0)
292 # define CTS_N_M(x) (((x) & 3) << 4)
293 #define REG_ENC_CNTRL REG(0x11, 0x0d) /* read/write */
294 # define ENC_CNTRL_RST_ENC (1 << 0)
295 # define ENC_CNTRL_RST_SEL (1 << 1)
296 # define ENC_CNTRL_CTL_CODE(x) (((x) & 3) << 2)
297 #define REG_DIP_FLAGS REG(0x11, 0x0e) /* read/write */
298 # define DIP_FLAGS_ACR (1 << 0)
299 # define DIP_FLAGS_GC (1 << 1)
300 #define REG_DIP_IF_FLAGS REG(0x11, 0x0f) /* read/write */
301 # define DIP_IF_FLAGS_IF1 (1 << 1)
302 # define DIP_IF_FLAGS_IF2 (1 << 2)
303 # define DIP_IF_FLAGS_IF3 (1 << 3)
304 # define DIP_IF_FLAGS_IF4 (1 << 4)
305 # define DIP_IF_FLAGS_IF5 (1 << 5)
306 #define REG_CH_STAT_B(x) REG(0x11, 0x14 + (x)) /* read/write */
309 /* Page 12h: HDCP and OTP */
310 #define REG_TX3 REG(0x12, 0x9a) /* read/write */
311 #define REG_TX4 REG(0x12, 0x9b) /* read/write */
312 # define TX4_PD_RAM (1 << 1)
313 #define REG_TX33 REG(0x12, 0xb8) /* read/write */
314 # define TX33_HDMI (1 << 1)
317 /* Page 13h: Gamut related metadata packets */
321 /* CEC registers: (not paged)
323 #define REG_CEC_INTSTATUS 0xee /* read */
324 # define CEC_INTSTATUS_CEC (1 << 0)
325 # define CEC_INTSTATUS_HDMI (1 << 1)
326 #define REG_CEC_FRO_IM_CLK_CTRL 0xfb /* read/write */
327 # define CEC_FRO_IM_CLK_CTRL_GHOST_DIS (1 << 7)
328 # define CEC_FRO_IM_CLK_CTRL_ENA_OTP (1 << 6)
329 # define CEC_FRO_IM_CLK_CTRL_IMCLK_SEL (1 << 1)
330 # define CEC_FRO_IM_CLK_CTRL_FRO_DIV (1 << 0)
331 #define REG_CEC_RXSHPDINTENA 0xfc /* read/write */
332 #define REG_CEC_RXSHPDINT 0xfd /* read */
333 # define CEC_RXSHPDINT_RXSENS BIT(0)
334 # define CEC_RXSHPDINT_HPD BIT(1)
335 #define REG_CEC_RXSHPDLEV 0xfe /* read */
336 # define CEC_RXSHPDLEV_RXSENS (1 << 0)
337 # define CEC_RXSHPDLEV_HPD (1 << 1)
339 #define REG_CEC_ENAMODS 0xff /* read/write */
340 # define CEC_ENAMODS_DIS_FRO (1 << 6)
341 # define CEC_ENAMODS_DIS_CCLK (1 << 5)
342 # define CEC_ENAMODS_EN_RXSENS (1 << 2)
343 # define CEC_ENAMODS_EN_HDMI (1 << 1)
344 # define CEC_ENAMODS_EN_CEC (1 << 0)
347 /* Device versions: */
348 #define TDA9989N2 0x0101
349 #define TDA19989 0x0201
350 #define TDA19989N2 0x0202
351 #define TDA19988 0x0301
354 cec_write(struct tda998x_priv *priv, u16 addr, u8 val)
356 struct i2c_client *client = priv->cec;
357 u8 buf[] = {addr, val};
360 ret = i2c_master_send(client, buf, sizeof(buf));
362 dev_err(&client->dev, "Error %d writing to cec:0x%x\n", ret, addr);
366 cec_read(struct tda998x_priv *priv, u8 addr)
368 struct i2c_client *client = priv->cec;
372 ret = i2c_master_send(client, &addr, sizeof(addr));
376 ret = i2c_master_recv(client, &val, sizeof(val));
383 dev_err(&client->dev, "Error %d reading from cec:0x%x\n", ret, addr);
388 set_page(struct tda998x_priv *priv, u16 reg)
390 if (REG2PAGE(reg) != priv->current_page) {
391 struct i2c_client *client = priv->hdmi;
393 REG_CURPAGE, REG2PAGE(reg)
395 int ret = i2c_master_send(client, buf, sizeof(buf));
397 dev_err(&client->dev, "%s %04x err %d\n", __func__,
402 priv->current_page = REG2PAGE(reg);
408 reg_read_range(struct tda998x_priv *priv, u16 reg, char *buf, int cnt)
410 struct i2c_client *client = priv->hdmi;
411 u8 addr = REG2ADDR(reg);
414 mutex_lock(&priv->mutex);
415 ret = set_page(priv, reg);
419 ret = i2c_master_send(client, &addr, sizeof(addr));
423 ret = i2c_master_recv(client, buf, cnt);
430 dev_err(&client->dev, "Error %d reading from 0x%x\n", ret, reg);
432 mutex_unlock(&priv->mutex);
437 reg_write_range(struct tda998x_priv *priv, u16 reg, u8 *p, int cnt)
439 struct i2c_client *client = priv->hdmi;
443 buf[0] = REG2ADDR(reg);
444 memcpy(&buf[1], p, cnt);
446 mutex_lock(&priv->mutex);
447 ret = set_page(priv, reg);
451 ret = i2c_master_send(client, buf, cnt + 1);
453 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
455 mutex_unlock(&priv->mutex);
459 reg_read(struct tda998x_priv *priv, u16 reg)
464 ret = reg_read_range(priv, reg, &val, sizeof(val));
471 reg_write(struct tda998x_priv *priv, u16 reg, u8 val)
473 struct i2c_client *client = priv->hdmi;
474 u8 buf[] = {REG2ADDR(reg), val};
477 mutex_lock(&priv->mutex);
478 ret = set_page(priv, reg);
482 ret = i2c_master_send(client, buf, sizeof(buf));
484 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
486 mutex_unlock(&priv->mutex);
490 reg_write16(struct tda998x_priv *priv, u16 reg, u16 val)
492 struct i2c_client *client = priv->hdmi;
493 u8 buf[] = {REG2ADDR(reg), val >> 8, val};
496 mutex_lock(&priv->mutex);
497 ret = set_page(priv, reg);
501 ret = i2c_master_send(client, buf, sizeof(buf));
503 dev_err(&client->dev, "Error %d writing to 0x%x\n", ret, reg);
505 mutex_unlock(&priv->mutex);
509 reg_set(struct tda998x_priv *priv, u16 reg, u8 val)
513 old_val = reg_read(priv, reg);
515 reg_write(priv, reg, old_val | val);
519 reg_clear(struct tda998x_priv *priv, u16 reg, u8 val)
523 old_val = reg_read(priv, reg);
525 reg_write(priv, reg, old_val & ~val);
529 tda998x_reset(struct tda998x_priv *priv)
531 /* reset audio and i2c master: */
532 reg_write(priv, REG_SOFTRESET, SOFTRESET_AUDIO | SOFTRESET_I2C_MASTER);
534 reg_write(priv, REG_SOFTRESET, 0);
537 /* reset transmitter: */
538 reg_set(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
539 reg_clear(priv, REG_MAIN_CNTRL0, MAIN_CNTRL0_SR);
541 /* PLL registers common configuration */
542 reg_write(priv, REG_PLL_SERIAL_1, 0x00);
543 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(1));
544 reg_write(priv, REG_PLL_SERIAL_3, 0x00);
545 reg_write(priv, REG_SERIALIZER, 0x00);
546 reg_write(priv, REG_BUFFER_OUT, 0x00);
547 reg_write(priv, REG_PLL_SCG1, 0x00);
548 reg_write(priv, REG_AUDIO_DIV, AUDIO_DIV_SERCLK_8);
549 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
550 reg_write(priv, REG_PLL_SCGN1, 0xfa);
551 reg_write(priv, REG_PLL_SCGN2, 0x00);
552 reg_write(priv, REG_PLL_SCGR1, 0x5b);
553 reg_write(priv, REG_PLL_SCGR2, 0x00);
554 reg_write(priv, REG_PLL_SCG2, 0x10);
556 /* Write the default value MUX register */
557 reg_write(priv, REG_MUX_VP_VIP_OUT, 0x24);
561 * The TDA998x has a problem when trying to read the EDID close to a
562 * HPD assertion: it needs a delay of 100ms to avoid timing out while
563 * trying to read EDID data.
565 * However, tda998x_encoder_get_modes() may be called at any moment
566 * after tda998x_encoder_detect() indicates that we are connected, so
567 * we need to delay probing modes in tda998x_encoder_get_modes() after
568 * we have seen a HPD inactive->active transition. This code implements
571 static void tda998x_edid_delay_done(unsigned long data)
573 struct tda998x_priv *priv = (struct tda998x_priv *)data;
575 priv->edid_delay_active = false;
576 wake_up(&priv->edid_delay_waitq);
577 schedule_work(&priv->detect_work);
580 static void tda998x_edid_delay_start(struct tda998x_priv *priv)
582 priv->edid_delay_active = true;
583 mod_timer(&priv->edid_delay_timer, jiffies + HZ/10);
586 static int tda998x_edid_delay_wait(struct tda998x_priv *priv)
588 return wait_event_killable(priv->edid_delay_waitq, !priv->edid_delay_active);
592 * We need to run the KMS hotplug event helper outside of our threaded
593 * interrupt routine as this can call back into our get_modes method,
594 * which will want to make use of interrupts.
596 static void tda998x_detect_work(struct work_struct *work)
598 struct tda998x_priv *priv =
599 container_of(work, struct tda998x_priv, detect_work);
600 struct drm_device *dev = priv->encoder->dev;
603 drm_kms_helper_hotplug_event(dev);
607 * only 2 interrupts may occur: screen plug/unplug and EDID read
609 static irqreturn_t tda998x_irq_thread(int irq, void *data)
611 struct tda998x_priv *priv = data;
612 u8 sta, cec, lvl, flag0, flag1, flag2;
613 bool handled = false;
615 sta = cec_read(priv, REG_CEC_INTSTATUS);
616 cec = cec_read(priv, REG_CEC_RXSHPDINT);
617 lvl = cec_read(priv, REG_CEC_RXSHPDLEV);
618 flag0 = reg_read(priv, REG_INT_FLAGS_0);
619 flag1 = reg_read(priv, REG_INT_FLAGS_1);
620 flag2 = reg_read(priv, REG_INT_FLAGS_2);
622 "tda irq sta %02x cec %02x lvl %02x f0 %02x f1 %02x f2 %02x\n",
623 sta, cec, lvl, flag0, flag1, flag2);
625 if (cec & CEC_RXSHPDINT_HPD) {
626 if (lvl & CEC_RXSHPDLEV_HPD)
627 tda998x_edid_delay_start(priv);
629 schedule_work(&priv->detect_work);
634 if ((flag2 & INT_FLAGS_2_EDID_BLK_RD) && priv->wq_edid_wait) {
635 priv->wq_edid_wait = 0;
636 wake_up(&priv->wq_edid);
640 return IRQ_RETVAL(handled);
644 tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr,
645 union hdmi_infoframe *frame)
650 len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
652 dev_err(&priv->hdmi->dev,
653 "hdmi_infoframe_pack() type=0x%02x failed: %zd\n",
654 frame->any.type, len);
658 reg_clear(priv, REG_DIP_IF_FLAGS, bit);
659 reg_write_range(priv, addr, buf, len);
660 reg_set(priv, REG_DIP_IF_FLAGS, bit);
664 tda998x_write_aif(struct tda998x_priv *priv, struct tda998x_encoder_params *p)
666 union hdmi_infoframe frame;
668 hdmi_audio_infoframe_init(&frame.audio);
670 frame.audio.channels = p->audio_frame[1] & 0x07;
671 frame.audio.channel_allocation = p->audio_frame[4];
672 frame.audio.level_shift_value = (p->audio_frame[5] & 0x78) >> 3;
673 frame.audio.downmix_inhibit = (p->audio_frame[5] & 0x80) >> 7;
676 * L-PCM and IEC61937 compressed audio shall always set sample
677 * frequency to "refer to stream". For others, see the HDMI
680 frame.audio.sample_frequency = (p->audio_frame[2] & 0x1c) >> 2;
682 tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, &frame);
686 tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
688 union hdmi_infoframe frame;
690 drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
691 frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
693 tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, &frame);
696 static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
699 reg_set(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
700 reg_clear(priv, REG_SOFTRESET, SOFTRESET_AUDIO);
701 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
703 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
708 tda998x_configure_audio(struct tda998x_priv *priv,
709 struct drm_display_mode *mode, struct tda998x_encoder_params *p)
711 u8 buf[6], clksel_aip, clksel_fs, cts_n, adiv;
714 /* Enable audio ports */
715 reg_write(priv, REG_ENA_AP, p->audio_cfg);
716 reg_write(priv, REG_ENA_ACLK, p->audio_clk_cfg);
718 /* Set audio input source */
719 switch (p->audio_format) {
721 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF);
722 clksel_aip = AIP_CLKSEL_AIP_SPDIF;
723 clksel_fs = AIP_CLKSEL_FS_FS64SPDIF;
724 cts_n = CTS_N_M(3) | CTS_N_K(3);
728 reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S);
729 clksel_aip = AIP_CLKSEL_AIP_I2S;
730 clksel_fs = AIP_CLKSEL_FS_ACLK;
731 cts_n = CTS_N_M(3) | CTS_N_K(3);
739 reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
740 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_LAYOUT |
741 AIP_CNTRL_0_ACR_MAN); /* auto CTS */
742 reg_write(priv, REG_CTS_N, cts_n);
745 * Audio input somehow depends on HDMI line rate which is
746 * related to pixclk. Testing showed that modes with pixclk
747 * >100MHz need a larger divider while <40MHz need the default.
748 * There is no detailed info in the datasheet, so we just
749 * assume 100MHz requires larger divider.
751 adiv = AUDIO_DIV_SERCLK_8;
752 if (mode->clock > 100000)
753 adiv++; /* AUDIO_DIV_SERCLK_16 */
755 /* S/PDIF asks for a larger divider */
756 if (p->audio_format == AFMT_SPDIF)
757 adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */
759 reg_write(priv, REG_AUDIO_DIV, adiv);
762 * This is the approximate value of N, which happens to be
763 * the recommended values for non-coherent clocks.
765 n = 128 * p->audio_sample_rate / 1000;
767 /* Write the CTS and N values */
774 reg_write_range(priv, REG_ACR_CTS_0, buf, 6);
776 /* Set CTS clock reference */
777 reg_write(priv, REG_AIP_CLKSEL, clksel_aip | clksel_fs);
779 /* Reset CTS generator */
780 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
781 reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
783 /* Write the channel status */
784 buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
786 buf[2] = IEC958_AES3_CON_FS_NOTID;
787 buf[3] = IEC958_AES4_CON_ORIGFS_NOTID |
788 IEC958_AES4_CON_MAX_WORDLEN_24;
789 reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);
791 tda998x_audio_mute(priv, true);
793 tda998x_audio_mute(priv, false);
795 /* Write the audio information packet */
796 tda998x_write_aif(priv, p);
799 /* DRM encoder functions */
801 static void tda998x_encoder_set_config(struct tda998x_priv *priv,
802 const struct tda998x_encoder_params *p)
804 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(p->swap_a) |
805 (p->mirr_a ? VIP_CNTRL_0_MIRR_A : 0) |
806 VIP_CNTRL_0_SWAP_B(p->swap_b) |
807 (p->mirr_b ? VIP_CNTRL_0_MIRR_B : 0);
808 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(p->swap_c) |
809 (p->mirr_c ? VIP_CNTRL_1_MIRR_C : 0) |
810 VIP_CNTRL_1_SWAP_D(p->swap_d) |
811 (p->mirr_d ? VIP_CNTRL_1_MIRR_D : 0);
812 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(p->swap_e) |
813 (p->mirr_e ? VIP_CNTRL_2_MIRR_E : 0) |
814 VIP_CNTRL_2_SWAP_F(p->swap_f) |
815 (p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);
820 static void tda998x_encoder_dpms(struct tda998x_priv *priv, int mode)
822 /* we only care about on or off: */
823 if (mode != DRM_MODE_DPMS_ON)
824 mode = DRM_MODE_DPMS_OFF;
826 if (mode == priv->dpms)
830 case DRM_MODE_DPMS_ON:
831 /* enable video ports, audio will be enabled later */
832 reg_write(priv, REG_ENA_VP_0, 0xff);
833 reg_write(priv, REG_ENA_VP_1, 0xff);
834 reg_write(priv, REG_ENA_VP_2, 0xff);
835 /* set muxing after enabling ports: */
836 reg_write(priv, REG_VIP_CNTRL_0, priv->vip_cntrl_0);
837 reg_write(priv, REG_VIP_CNTRL_1, priv->vip_cntrl_1);
838 reg_write(priv, REG_VIP_CNTRL_2, priv->vip_cntrl_2);
840 case DRM_MODE_DPMS_OFF:
841 /* disable video ports */
842 reg_write(priv, REG_ENA_VP_0, 0x00);
843 reg_write(priv, REG_ENA_VP_1, 0x00);
844 reg_write(priv, REG_ENA_VP_2, 0x00);
852 tda998x_encoder_save(struct drm_encoder *encoder)
858 tda998x_encoder_restore(struct drm_encoder *encoder)
864 tda998x_encoder_mode_fixup(struct drm_encoder *encoder,
865 const struct drm_display_mode *mode,
866 struct drm_display_mode *adjusted_mode)
871 static int tda998x_encoder_mode_valid(struct tda998x_priv *priv,
872 struct drm_display_mode *mode)
874 if (mode->clock > 150000)
875 return MODE_CLOCK_HIGH;
876 if (mode->htotal >= BIT(13))
877 return MODE_BAD_HVALUE;
878 if (mode->vtotal >= BIT(11))
879 return MODE_BAD_VVALUE;
884 tda998x_encoder_mode_set(struct tda998x_priv *priv,
885 struct drm_display_mode *mode,
886 struct drm_display_mode *adjusted_mode)
888 u16 ref_pix, ref_line, n_pix, n_line;
889 u16 hs_pix_s, hs_pix_e;
890 u16 vs1_pix_s, vs1_pix_e, vs1_line_s, vs1_line_e;
891 u16 vs2_pix_s, vs2_pix_e, vs2_line_s, vs2_line_e;
892 u16 vwin1_line_s, vwin1_line_e;
893 u16 vwin2_line_s, vwin2_line_e;
894 u16 de_pix_s, de_pix_e;
898 * Internally TDA998x is using ITU-R BT.656 style sync but
899 * we get VESA style sync. TDA998x is using a reference pixel
900 * relative to ITU to sync to the input frame and for output
901 * sync generation. Currently, we are using reference detection
902 * from HS/VS, i.e. REFPIX/REFLINE denote frame start sync point
903 * which is position of rising VS with coincident rising HS.
905 * Now there is some issues to take care of:
906 * - HDMI data islands require sync-before-active
907 * - TDA998x register values must be > 0 to be enabled
908 * - REFLINE needs an additional offset of +1
909 * - REFPIX needs an addtional offset of +1 for UYUV and +3 for RGB
911 * So we add +1 to all horizontal and vertical register values,
912 * plus an additional +3 for REFPIX as we are using RGB input only.
914 n_pix = mode->htotal;
915 n_line = mode->vtotal;
917 hs_pix_e = mode->hsync_end - mode->hdisplay;
918 hs_pix_s = mode->hsync_start - mode->hdisplay;
919 de_pix_e = mode->htotal;
920 de_pix_s = mode->htotal - mode->hdisplay;
921 ref_pix = 3 + hs_pix_s;
924 * Attached LCD controllers may generate broken sync. Allow
925 * those to adjust the position of the rising VS edge by adding
928 if (adjusted_mode->flags & DRM_MODE_FLAG_HSKEW)
929 ref_pix += adjusted_mode->hskew;
931 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) == 0) {
932 ref_line = 1 + mode->vsync_start - mode->vdisplay;
933 vwin1_line_s = mode->vtotal - mode->vdisplay - 1;
934 vwin1_line_e = vwin1_line_s + mode->vdisplay;
935 vs1_pix_s = vs1_pix_e = hs_pix_s;
936 vs1_line_s = mode->vsync_start - mode->vdisplay;
937 vs1_line_e = vs1_line_s +
938 mode->vsync_end - mode->vsync_start;
939 vwin2_line_s = vwin2_line_e = 0;
940 vs2_pix_s = vs2_pix_e = 0;
941 vs2_line_s = vs2_line_e = 0;
943 ref_line = 1 + (mode->vsync_start - mode->vdisplay)/2;
944 vwin1_line_s = (mode->vtotal - mode->vdisplay)/2;
945 vwin1_line_e = vwin1_line_s + mode->vdisplay/2;
946 vs1_pix_s = vs1_pix_e = hs_pix_s;
947 vs1_line_s = (mode->vsync_start - mode->vdisplay)/2;
948 vs1_line_e = vs1_line_s +
949 (mode->vsync_end - mode->vsync_start)/2;
950 vwin2_line_s = vwin1_line_s + mode->vtotal/2;
951 vwin2_line_e = vwin2_line_s + mode->vdisplay/2;
952 vs2_pix_s = vs2_pix_e = hs_pix_s + mode->htotal/2;
953 vs2_line_s = vs1_line_s + mode->vtotal/2 ;
954 vs2_line_e = vs2_line_s +
955 (mode->vsync_end - mode->vsync_start)/2;
958 div = 148500 / mode->clock;
965 /* mute the audio FIFO: */
966 reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_FIFO);
968 /* set HDMI HDCP mode off: */
969 reg_write(priv, REG_TBG_CNTRL_1, TBG_CNTRL_1_DWIN_DIS);
970 reg_clear(priv, REG_TX33, TX33_HDMI);
971 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(0));
973 /* no pre-filter or interpolator: */
974 reg_write(priv, REG_HVF_CNTRL_0, HVF_CNTRL_0_PREFIL(0) |
975 HVF_CNTRL_0_INTPOL(0));
976 reg_write(priv, REG_VIP_CNTRL_5, VIP_CNTRL_5_SP_CNT(0));
977 reg_write(priv, REG_VIP_CNTRL_4, VIP_CNTRL_4_BLANKIT(0) |
980 reg_clear(priv, REG_PLL_SERIAL_1, PLL_SERIAL_1_SRL_MAN_IZ);
981 reg_clear(priv, REG_PLL_SERIAL_3, PLL_SERIAL_3_SRL_CCIR |
982 PLL_SERIAL_3_SRL_DE);
983 reg_write(priv, REG_SERIALIZER, 0);
984 reg_write(priv, REG_HVF_CNTRL_1, HVF_CNTRL_1_VQR(0));
986 /* TODO enable pixel repeat for pixel rates less than 25Msamp/s */
988 reg_write(priv, REG_RPT_CNTRL, 0);
989 reg_write(priv, REG_SEL_CLK, SEL_CLK_SEL_VRF_CLK(0) |
990 SEL_CLK_SEL_CLK1 | SEL_CLK_ENA_SC_CLK);
992 reg_write(priv, REG_PLL_SERIAL_2, PLL_SERIAL_2_SRL_NOSC(div) |
993 PLL_SERIAL_2_SRL_PR(rep));
995 /* set color matrix bypass flag: */
996 reg_write(priv, REG_MAT_CONTRL, MAT_CONTRL_MAT_BP |
997 MAT_CONTRL_MAT_SC(1));
999 /* set BIAS tmds value: */
1000 reg_write(priv, REG_ANA_GENERAL, 0x09);
1003 * Sync on rising HSYNC/VSYNC
1005 reg = VIP_CNTRL_3_SYNC_HS;
1008 * TDA19988 requires high-active sync at input stage,
1009 * so invert low-active sync provided by master encoder here
1011 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1012 reg |= VIP_CNTRL_3_H_TGL;
1013 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1014 reg |= VIP_CNTRL_3_V_TGL;
1015 reg_write(priv, REG_VIP_CNTRL_3, reg);
1017 reg_write(priv, REG_VIDFORMAT, 0x00);
1018 reg_write16(priv, REG_REFPIX_MSB, ref_pix);
1019 reg_write16(priv, REG_REFLINE_MSB, ref_line);
1020 reg_write16(priv, REG_NPIX_MSB, n_pix);
1021 reg_write16(priv, REG_NLINE_MSB, n_line);
1022 reg_write16(priv, REG_VS_LINE_STRT_1_MSB, vs1_line_s);
1023 reg_write16(priv, REG_VS_PIX_STRT_1_MSB, vs1_pix_s);
1024 reg_write16(priv, REG_VS_LINE_END_1_MSB, vs1_line_e);
1025 reg_write16(priv, REG_VS_PIX_END_1_MSB, vs1_pix_e);
1026 reg_write16(priv, REG_VS_LINE_STRT_2_MSB, vs2_line_s);
1027 reg_write16(priv, REG_VS_PIX_STRT_2_MSB, vs2_pix_s);
1028 reg_write16(priv, REG_VS_LINE_END_2_MSB, vs2_line_e);
1029 reg_write16(priv, REG_VS_PIX_END_2_MSB, vs2_pix_e);
1030 reg_write16(priv, REG_HS_PIX_START_MSB, hs_pix_s);
1031 reg_write16(priv, REG_HS_PIX_STOP_MSB, hs_pix_e);
1032 reg_write16(priv, REG_VWIN_START_1_MSB, vwin1_line_s);
1033 reg_write16(priv, REG_VWIN_END_1_MSB, vwin1_line_e);
1034 reg_write16(priv, REG_VWIN_START_2_MSB, vwin2_line_s);
1035 reg_write16(priv, REG_VWIN_END_2_MSB, vwin2_line_e);
1036 reg_write16(priv, REG_DE_START_MSB, de_pix_s);
1037 reg_write16(priv, REG_DE_STOP_MSB, de_pix_e);
1039 if (priv->rev == TDA19988) {
1040 /* let incoming pixels fill the active space (if any) */
1041 reg_write(priv, REG_ENABLE_SPACE, 0x00);
1045 * Always generate sync polarity relative to input sync and
1046 * revert input stage toggled sync at output stage
1048 reg = TBG_CNTRL_1_DWIN_DIS | TBG_CNTRL_1_TGL_EN;
1049 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1050 reg |= TBG_CNTRL_1_H_TGL;
1051 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1052 reg |= TBG_CNTRL_1_V_TGL;
1053 reg_write(priv, REG_TBG_CNTRL_1, reg);
1055 /* must be last register set: */
1056 reg_write(priv, REG_TBG_CNTRL_0, 0);
1058 /* Only setup the info frames if the sink is HDMI */
1059 if (priv->is_hdmi_sink) {
1060 /* We need to turn HDMI HDCP stuff on to get audio through */
1061 reg &= ~TBG_CNTRL_1_DWIN_DIS;
1062 reg_write(priv, REG_TBG_CNTRL_1, reg);
1063 reg_write(priv, REG_ENC_CNTRL, ENC_CNTRL_CTL_CODE(1));
1064 reg_set(priv, REG_TX33, TX33_HDMI);
1066 tda998x_write_avi(priv, adjusted_mode);
1068 if (priv->params.audio_cfg)
1069 tda998x_configure_audio(priv, adjusted_mode,
1074 static enum drm_connector_status
1075 tda998x_encoder_detect(struct tda998x_priv *priv)
1077 u8 val = cec_read(priv, REG_CEC_RXSHPDLEV);
1079 return (val & CEC_RXSHPDLEV_HPD) ? connector_status_connected :
1080 connector_status_disconnected;
1083 static int read_edid_block(void *data, u8 *buf, unsigned int blk, size_t length)
1085 struct tda998x_priv *priv = data;
1089 offset = (blk & 1) ? 128 : 0;
1092 reg_write(priv, REG_DDC_ADDR, 0xa0);
1093 reg_write(priv, REG_DDC_OFFS, offset);
1094 reg_write(priv, REG_DDC_SEGM_ADDR, 0x60);
1095 reg_write(priv, REG_DDC_SEGM, segptr);
1097 /* enable reading EDID: */
1098 priv->wq_edid_wait = 1;
1099 reg_write(priv, REG_EDID_CTRL, 0x1);
1101 /* flag must be cleared by sw: */
1102 reg_write(priv, REG_EDID_CTRL, 0x0);
1104 /* wait for block read to complete: */
1105 if (priv->hdmi->irq) {
1106 i = wait_event_timeout(priv->wq_edid,
1107 !priv->wq_edid_wait,
1108 msecs_to_jiffies(100));
1110 dev_err(&priv->hdmi->dev, "read edid wait err %d\n", i);
1114 for (i = 100; i > 0; i--) {
1116 ret = reg_read(priv, REG_INT_FLAGS_2);
1119 if (ret & INT_FLAGS_2_EDID_BLK_RD)
1125 dev_err(&priv->hdmi->dev, "read edid timeout\n");
1129 ret = reg_read_range(priv, REG_EDID_DATA_0, buf, length);
1130 if (ret != length) {
1131 dev_err(&priv->hdmi->dev, "failed to read edid block %d: %d\n",
1140 tda998x_encoder_get_modes(struct tda998x_priv *priv,
1141 struct drm_connector *connector)
1147 * If we get killed while waiting for the HPD timeout, return
1148 * no modes found: we are not in a restartable path, so we
1149 * can't handle signals gracefully.
1151 if (tda998x_edid_delay_wait(priv))
1154 if (priv->rev == TDA19988)
1155 reg_clear(priv, REG_TX4, TX4_PD_RAM);
1157 edid = drm_do_get_edid(connector, read_edid_block, priv);
1159 if (priv->rev == TDA19988)
1160 reg_set(priv, REG_TX4, TX4_PD_RAM);
1163 dev_warn(&priv->hdmi->dev, "failed to read EDID\n");
1167 drm_mode_connector_update_edid_property(connector, edid);
1168 n = drm_add_edid_modes(connector, edid);
1169 priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
1175 static void tda998x_encoder_set_polling(struct tda998x_priv *priv,
1176 struct drm_connector *connector)
1178 if (priv->hdmi->irq)
1179 connector->polled = DRM_CONNECTOR_POLL_HPD;
1181 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
1182 DRM_CONNECTOR_POLL_DISCONNECT;
1186 tda998x_encoder_set_property(struct drm_encoder *encoder,
1187 struct drm_connector *connector,
1188 struct drm_property *property,
1195 static void tda998x_destroy(struct tda998x_priv *priv)
1197 /* disable all IRQs and free the IRQ handler */
1198 cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1199 reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1201 if (priv->hdmi->irq)
1202 free_irq(priv->hdmi->irq, priv);
1204 del_timer_sync(&priv->edid_delay_timer);
1205 cancel_work_sync(&priv->detect_work);
1207 i2c_unregister_device(priv->cec);
1210 /* Slave encoder support */
1213 tda998x_encoder_slave_set_config(struct drm_encoder *encoder, void *params)
1215 tda998x_encoder_set_config(to_tda998x_priv(encoder), params);
1218 static void tda998x_encoder_slave_destroy(struct drm_encoder *encoder)
1220 struct tda998x_priv *priv = to_tda998x_priv(encoder);
1222 tda998x_destroy(priv);
1223 drm_i2c_encoder_destroy(encoder);
1227 static void tda998x_encoder_slave_dpms(struct drm_encoder *encoder, int mode)
1229 tda998x_encoder_dpms(to_tda998x_priv(encoder), mode);
1232 static int tda998x_encoder_slave_mode_valid(struct drm_encoder *encoder,
1233 struct drm_display_mode *mode)
1235 return tda998x_encoder_mode_valid(to_tda998x_priv(encoder), mode);
1239 tda998x_encoder_slave_mode_set(struct drm_encoder *encoder,
1240 struct drm_display_mode *mode,
1241 struct drm_display_mode *adjusted_mode)
1243 tda998x_encoder_mode_set(to_tda998x_priv(encoder), mode, adjusted_mode);
1246 static enum drm_connector_status
1247 tda998x_encoder_slave_detect(struct drm_encoder *encoder,
1248 struct drm_connector *connector)
1250 return tda998x_encoder_detect(to_tda998x_priv(encoder));
1253 static int tda998x_encoder_slave_get_modes(struct drm_encoder *encoder,
1254 struct drm_connector *connector)
1256 return tda998x_encoder_get_modes(to_tda998x_priv(encoder), connector);
1260 tda998x_encoder_slave_create_resources(struct drm_encoder *encoder,
1261 struct drm_connector *connector)
1263 tda998x_encoder_set_polling(to_tda998x_priv(encoder), connector);
1267 static struct drm_encoder_slave_funcs tda998x_encoder_slave_funcs = {
1268 .set_config = tda998x_encoder_slave_set_config,
1269 .destroy = tda998x_encoder_slave_destroy,
1270 .dpms = tda998x_encoder_slave_dpms,
1271 .save = tda998x_encoder_save,
1272 .restore = tda998x_encoder_restore,
1273 .mode_fixup = tda998x_encoder_mode_fixup,
1274 .mode_valid = tda998x_encoder_slave_mode_valid,
1275 .mode_set = tda998x_encoder_slave_mode_set,
1276 .detect = tda998x_encoder_slave_detect,
1277 .get_modes = tda998x_encoder_slave_get_modes,
1278 .create_resources = tda998x_encoder_slave_create_resources,
1279 .set_property = tda998x_encoder_set_property,
1282 /* I2C driver functions */
1284 static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
1286 struct device_node *np = client->dev.of_node;
1288 int rev_lo, rev_hi, ret;
1289 unsigned short cec_addr;
1291 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
1292 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
1293 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
1295 priv->current_page = 0xff;
1296 priv->hdmi = client;
1297 /* CEC I2C address bound to TDA998x I2C addr by configuration pins */
1298 cec_addr = 0x34 + (client->addr & 0x03);
1299 priv->cec = i2c_new_dummy(client->adapter, cec_addr);
1303 priv->dpms = DRM_MODE_DPMS_OFF;
1305 mutex_init(&priv->mutex); /* protect the page access */
1306 init_waitqueue_head(&priv->edid_delay_waitq);
1307 setup_timer(&priv->edid_delay_timer, tda998x_edid_delay_done,
1308 (unsigned long)priv);
1309 INIT_WORK(&priv->detect_work, tda998x_detect_work);
1311 /* wake up the device: */
1312 cec_write(priv, REG_CEC_ENAMODS,
1313 CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
1315 tda998x_reset(priv);
1318 rev_lo = reg_read(priv, REG_VERSION_LSB);
1319 rev_hi = reg_read(priv, REG_VERSION_MSB);
1320 if (rev_lo < 0 || rev_hi < 0) {
1321 ret = rev_lo < 0 ? rev_lo : rev_hi;
1325 priv->rev = rev_lo | rev_hi << 8;
1327 /* mask off feature bits: */
1328 priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */
1330 switch (priv->rev) {
1332 dev_info(&client->dev, "found TDA9989 n2");
1335 dev_info(&client->dev, "found TDA19989");
1338 dev_info(&client->dev, "found TDA19989 n2");
1341 dev_info(&client->dev, "found TDA19988");
1344 dev_err(&client->dev, "found unsupported device: %04x\n",
1349 /* after reset, enable DDC: */
1350 reg_write(priv, REG_DDC_DISABLE, 0x00);
1352 /* set clock on DDC channel: */
1353 reg_write(priv, REG_TX3, 39);
1355 /* if necessary, disable multi-master: */
1356 if (priv->rev == TDA19989)
1357 reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
1359 cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
1360 CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
1362 /* initialize the optional IRQ */
1366 /* init read EDID waitqueue and HDP work */
1367 init_waitqueue_head(&priv->wq_edid);
1369 /* clear pending interrupts */
1370 reg_read(priv, REG_INT_FLAGS_0);
1371 reg_read(priv, REG_INT_FLAGS_1);
1372 reg_read(priv, REG_INT_FLAGS_2);
1375 irqd_get_trigger_type(irq_get_irq_data(client->irq));
1376 ret = request_threaded_irq(client->irq, NULL,
1378 irqf_trigger | IRQF_ONESHOT,
1381 dev_err(&client->dev,
1382 "failed to request IRQ#%u: %d\n",
1387 /* enable HPD irq */
1388 cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
1391 /* enable EDID read irq: */
1392 reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1395 return 0; /* non-DT */
1397 /* get the optional video properties */
1398 ret = of_property_read_u32(np, "video-ports", &video);
1400 priv->vip_cntrl_0 = video >> 16;
1401 priv->vip_cntrl_1 = video >> 8;
1402 priv->vip_cntrl_2 = video;
1408 /* if encoder_init fails, the encoder slave is never registered,
1412 i2c_unregister_device(priv->cec);
1416 static int tda998x_encoder_init(struct i2c_client *client,
1417 struct drm_device *dev,
1418 struct drm_encoder_slave *encoder_slave)
1420 struct tda998x_priv *priv;
1423 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1427 priv->encoder = &encoder_slave->base;
1429 ret = tda998x_create(client, priv);
1435 encoder_slave->slave_priv = priv;
1436 encoder_slave->slave_funcs = &tda998x_encoder_slave_funcs;
1441 struct tda998x_priv2 {
1442 struct tda998x_priv base;
1443 struct drm_encoder encoder;
1444 struct drm_connector connector;
1447 #define conn_to_tda998x_priv2(x) \
1448 container_of(x, struct tda998x_priv2, connector);
1450 #define enc_to_tda998x_priv2(x) \
1451 container_of(x, struct tda998x_priv2, encoder);
1453 static void tda998x_encoder2_dpms(struct drm_encoder *encoder, int mode)
1455 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1457 tda998x_encoder_dpms(&priv->base, mode);
1460 static void tda998x_encoder_prepare(struct drm_encoder *encoder)
1462 tda998x_encoder2_dpms(encoder, DRM_MODE_DPMS_OFF);
1465 static void tda998x_encoder_commit(struct drm_encoder *encoder)
1467 tda998x_encoder2_dpms(encoder, DRM_MODE_DPMS_ON);
1470 static void tda998x_encoder2_mode_set(struct drm_encoder *encoder,
1471 struct drm_display_mode *mode,
1472 struct drm_display_mode *adjusted_mode)
1474 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1476 tda998x_encoder_mode_set(&priv->base, mode, adjusted_mode);
1479 static const struct drm_encoder_helper_funcs tda998x_encoder_helper_funcs = {
1480 .dpms = tda998x_encoder2_dpms,
1481 .save = tda998x_encoder_save,
1482 .restore = tda998x_encoder_restore,
1483 .mode_fixup = tda998x_encoder_mode_fixup,
1484 .prepare = tda998x_encoder_prepare,
1485 .commit = tda998x_encoder_commit,
1486 .mode_set = tda998x_encoder2_mode_set,
1489 static void tda998x_encoder_destroy(struct drm_encoder *encoder)
1491 struct tda998x_priv2 *priv = enc_to_tda998x_priv2(encoder);
1493 tda998x_destroy(&priv->base);
1494 drm_encoder_cleanup(encoder);
1497 static const struct drm_encoder_funcs tda998x_encoder_funcs = {
1498 .destroy = tda998x_encoder_destroy,
1501 static int tda998x_connector_get_modes(struct drm_connector *connector)
1503 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1505 return tda998x_encoder_get_modes(&priv->base, connector);
1508 static int tda998x_connector_mode_valid(struct drm_connector *connector,
1509 struct drm_display_mode *mode)
1511 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1513 return tda998x_encoder_mode_valid(&priv->base, mode);
1516 static struct drm_encoder *
1517 tda998x_connector_best_encoder(struct drm_connector *connector)
1519 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1521 return &priv->encoder;
1525 const struct drm_connector_helper_funcs tda998x_connector_helper_funcs = {
1526 .get_modes = tda998x_connector_get_modes,
1527 .mode_valid = tda998x_connector_mode_valid,
1528 .best_encoder = tda998x_connector_best_encoder,
1531 static enum drm_connector_status
1532 tda998x_connector_detect(struct drm_connector *connector, bool force)
1534 struct tda998x_priv2 *priv = conn_to_tda998x_priv2(connector);
1536 return tda998x_encoder_detect(&priv->base);
1539 static void tda998x_connector_destroy(struct drm_connector *connector)
1541 drm_connector_unregister(connector);
1542 drm_connector_cleanup(connector);
1545 static const struct drm_connector_funcs tda998x_connector_funcs = {
1546 .dpms = drm_helper_connector_dpms,
1547 .fill_modes = drm_helper_probe_single_connector_modes,
1548 .detect = tda998x_connector_detect,
1549 .destroy = tda998x_connector_destroy,
1552 static int tda998x_bind(struct device *dev, struct device *master, void *data)
1554 struct tda998x_encoder_params *params = dev->platform_data;
1555 struct i2c_client *client = to_i2c_client(dev);
1556 struct drm_device *drm = data;
1557 struct tda998x_priv2 *priv;
1561 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1565 dev_set_drvdata(dev, priv);
1568 crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
1570 /* If no CRTCs were found, fall back to our old behaviour */
1572 dev_warn(dev, "Falling back to first CRTC\n");
1576 priv->base.encoder = &priv->encoder;
1577 priv->connector.interlace_allowed = 1;
1578 priv->encoder.possible_crtcs = crtcs;
1580 ret = tda998x_create(client, &priv->base);
1584 if (!dev->of_node && params)
1585 tda998x_encoder_set_config(&priv->base, params);
1587 tda998x_encoder_set_polling(&priv->base, &priv->connector);
1589 drm_encoder_helper_add(&priv->encoder, &tda998x_encoder_helper_funcs);
1590 ret = drm_encoder_init(drm, &priv->encoder, &tda998x_encoder_funcs,
1591 DRM_MODE_ENCODER_TMDS);
1595 drm_connector_helper_add(&priv->connector,
1596 &tda998x_connector_helper_funcs);
1597 ret = drm_connector_init(drm, &priv->connector,
1598 &tda998x_connector_funcs,
1599 DRM_MODE_CONNECTOR_HDMIA);
1603 ret = drm_connector_register(&priv->connector);
1607 priv->connector.encoder = &priv->encoder;
1608 drm_mode_connector_attach_encoder(&priv->connector, &priv->encoder);
1613 drm_connector_cleanup(&priv->connector);
1615 drm_encoder_cleanup(&priv->encoder);
1617 tda998x_destroy(&priv->base);
1621 static void tda998x_unbind(struct device *dev, struct device *master,
1624 struct tda998x_priv2 *priv = dev_get_drvdata(dev);
1626 drm_connector_cleanup(&priv->connector);
1627 drm_encoder_cleanup(&priv->encoder);
1628 tda998x_destroy(&priv->base);
1631 static const struct component_ops tda998x_ops = {
1632 .bind = tda998x_bind,
1633 .unbind = tda998x_unbind,
1637 tda998x_probe(struct i2c_client *client, const struct i2c_device_id *id)
1639 return component_add(&client->dev, &tda998x_ops);
1642 static int tda998x_remove(struct i2c_client *client)
1644 component_del(&client->dev, &tda998x_ops);
1649 static const struct of_device_id tda998x_dt_ids[] = {
1650 { .compatible = "nxp,tda998x", },
1653 MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
1656 static struct i2c_device_id tda998x_ids[] = {
1660 MODULE_DEVICE_TABLE(i2c, tda998x_ids);
1662 static struct drm_i2c_encoder_driver tda998x_driver = {
1664 .probe = tda998x_probe,
1665 .remove = tda998x_remove,
1668 .of_match_table = of_match_ptr(tda998x_dt_ids),
1670 .id_table = tda998x_ids,
1672 .encoder_init = tda998x_encoder_init,
1675 /* Module initialization */
1681 return drm_i2c_encoder_register(THIS_MODULE, &tda998x_driver);
1688 drm_i2c_encoder_unregister(&tda998x_driver);
1691 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1692 MODULE_DESCRIPTION("NXP Semiconductors TDA998X HDMI Encoder");
1693 MODULE_LICENSE("GPL");
1695 module_init(tda998x_init);
1696 module_exit(tda998x_exit);