1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2014 Freescale Semiconductor, Inc.
4 * Copyright 2019 NXP
5 */
6
7 #include <asm/io.h>
8 #include <common.h>
9 #include <fsl_dcu_fb.h>
10 #include <i2c.h>
11 #include <linux/fb.h>
12
13 #define PIXEL_CLK_LSB_REG 0x00
14 #define PIXEL_CLK_MSB_REG 0x01
15 #define VERT_FREQ_LSB_REG 0x02
16 #define VERT_FREQ_MSB_REG 0x03
17 #define TOTAL_PIXELS_LSB_REG 0x04
18 #define TOTAL_PIXELS_MSB_REG 0x05
19 #define TOTAL_LINES_LSB_REG 0x06
20 #define TOTAL_LINES_MSB_REG 0x07
21 #define TPI_INBUS_FMT_REG 0x08
22 #define TPI_INPUT_FMT_REG 0x09
23 #define TPI_OUTPUT_FMT_REG 0x0A
24 #define TPI_SYS_CTRL_REG 0x1A
25 #define TPI_PWR_STAT_REG 0x1E
26 #define TPI_AUDIO_HANDING_REG 0x25
27 #define TPI_AUDIO_INTF_REG 0x26
28 #define TPI_AUDIO_FREQ_REG 0x27
29 #define TPI_SET_PAGE_REG 0xBC
30 #define TPI_SET_OFFSET_REG 0xBD
31 #define TPI_RW_ACCESS_REG 0xBE
32 #define TPI_TRANS_MODE_REG 0xC7
33
34 #define TPI_INBUS_CLOCK_RATIO_1 (1 << 6)
35 #define TPI_INBUS_FULL_PIXEL_WIDE (1 << 5)
36 #define TPI_INBUS_RISING_EDGE (1 << 4)
37 #define TPI_INPUT_CLR_DEPTH_8BIT (0 << 6)
38 #define TPI_INPUT_VRANGE_EXPAN_AUTO (0 << 2)
39 #define TPI_INPUT_CLR_RGB (0 << 0)
40 #define TPI_OUTPUT_CLR_DEPTH_8BIT (0 << 6)
41 #define TPI_OUTPUT_VRANGE_COMPRE_AUTO (0 << 2)
42 #define TPI_OUTPUT_CLR_HDMI_RGB (0 << 0)
43 #define TPI_SYS_TMDS_OUTPUT (0 << 4)
44 #define TPI_SYS_AV_NORAML (0 << 3)
45 #define TPI_SYS_AV_MUTE (1 << 3)
46 #define TPI_SYS_DVI_MODE (0 << 0)
47 #define TPI_SYS_HDMI_MODE (1 << 0)
48 #define TPI_PWR_STAT_MASK (3 << 0)
49 #define TPI_PWR_STAT_D0 (0 << 0)
50 #define TPI_AUDIO_PASS_BASIC (0 << 0)
51 #define TPI_AUDIO_INTF_I2S (2 << 6)
52 #define TPI_AUDIO_INTF_NORMAL (0 << 4)
53 #define TPI_AUDIO_TYPE_PCM (1 << 0)
54 #define TPI_AUDIO_SAMP_SIZE_16BIT (1 << 6)
55 #define TPI_AUDIO_SAMP_FREQ_44K (2 << 3)
56 #define TPI_SET_PAGE_SII9022A 0x01
57 #define TPI_SET_OFFSET_SII9022A 0x82
58 #define TPI_RW_EN_SRC_TERMIN (1 << 0)
59 #define TPI_TRANS_MODE_ENABLE (0 << 7)
60
61 /* Programming of Silicon SIi9022a HDMI Transmitter */
dcu_set_dvi_encoder(struct fb_videomode * videomode)62 int dcu_set_dvi_encoder(struct fb_videomode *videomode)
63 {
64 u8 temp;
65 u16 temp1, temp2;
66 u32 temp3;
67 #if CONFIG_IS_ENABLED(DM_I2C)
68 struct udevice *dev;
69 int ret;
70
71 ret = i2c_get_chip_for_busnum(CONFIG_SYS_I2C_DVI_BUS_NUM,
72 CONFIG_SYS_I2C_DVI_ADDR,
73 1, &dev);
74 if (ret) {
75 printf("%s: Cannot find udev for a bus %d\n", __func__,
76 CONFIG_SYS_I2C_DVI_BUS_NUM);
77 return ret;
78 }
79
80 /* Enable TPI transmitter mode */
81 temp = TPI_TRANS_MODE_ENABLE;
82 dm_i2c_write(dev, TPI_TRANS_MODE_REG, &temp, 1);
83
84 /* Enter into D0 state, full operation */
85 dm_i2c_read(dev, TPI_PWR_STAT_REG, &temp, 1);
86 temp &= ~TPI_PWR_STAT_MASK;
87 temp |= TPI_PWR_STAT_D0;
88 dm_i2c_write(dev, TPI_PWR_STAT_REG, &temp, 1);
89
90 /* Enable source termination */
91 temp = TPI_SET_PAGE_SII9022A;
92 dm_i2c_write(dev, TPI_SET_PAGE_REG, &temp, 1);
93 temp = TPI_SET_OFFSET_SII9022A;
94 dm_i2c_write(dev, TPI_SET_OFFSET_REG, &temp, 1);
95
96 dm_i2c_read(dev, TPI_RW_ACCESS_REG, &temp, 1);
97 temp |= TPI_RW_EN_SRC_TERMIN;
98 dm_i2c_write(dev, TPI_RW_ACCESS_REG, &temp, 1);
99
100 /* Set TPI system control */
101 temp = TPI_SYS_TMDS_OUTPUT | TPI_SYS_AV_NORAML | TPI_SYS_DVI_MODE;
102 dm_i2c_write(dev, TPI_SYS_CTRL_REG, &temp, 1);
103
104 /* Set pixel clock */
105 temp1 = PICOS2KHZ(videomode->pixclock) / 10;
106 temp = (u8)(temp1 & 0xFF);
107 dm_i2c_write(dev, PIXEL_CLK_LSB_REG, &temp, 1);
108 temp = (u8)(temp1 >> 8);
109 dm_i2c_write(dev, PIXEL_CLK_MSB_REG, &temp, 1);
110
111 /* Set total pixels per line */
112 temp1 = videomode->hsync_len + videomode->left_margin +
113 videomode->xres + videomode->right_margin;
114 temp = (u8)(temp1 & 0xFF);
115 dm_i2c_write(dev, TOTAL_PIXELS_LSB_REG, &temp, 1);
116 temp = (u8)(temp1 >> 8);
117 dm_i2c_write(dev, TOTAL_PIXELS_MSB_REG, &temp, 1);
118
119 /* Set total lines */
120 temp2 = videomode->vsync_len + videomode->upper_margin +
121 videomode->yres + videomode->lower_margin;
122 temp = (u8)(temp2 & 0xFF);
123 dm_i2c_write(dev, TOTAL_LINES_LSB_REG, &temp, 1);
124 temp = (u8)(temp2 >> 8);
125 dm_i2c_write(dev, TOTAL_LINES_MSB_REG, &temp, 1);
126
127 /* Set vertical frequency in Hz */
128 temp3 = temp1 * temp2;
129 temp3 = (PICOS2KHZ(videomode->pixclock) * 1000) / temp3;
130 temp1 = (u16)temp3 * 100;
131 temp = (u8)(temp1 & 0xFF);
132 dm_i2c_write(dev, VERT_FREQ_LSB_REG, &temp, 1);
133 temp = (u8)(temp1 >> 8);
134 dm_i2c_write(dev, VERT_FREQ_MSB_REG, &temp, 1);
135
136 /* Set TPI input bus and pixel repetition data */
137 temp = TPI_INBUS_CLOCK_RATIO_1 | TPI_INBUS_FULL_PIXEL_WIDE |
138 TPI_INBUS_RISING_EDGE;
139 dm_i2c_write(dev, TPI_INBUS_FMT_REG, &temp, 1);
140
141 /* Set TPI AVI Input format data */
142 temp = TPI_INPUT_CLR_DEPTH_8BIT | TPI_INPUT_VRANGE_EXPAN_AUTO |
143 TPI_INPUT_CLR_RGB;
144 dm_i2c_write(dev, TPI_INPUT_FMT_REG, &temp, 1);
145
146 /* Set TPI AVI Output format data */
147 temp = TPI_OUTPUT_CLR_DEPTH_8BIT | TPI_OUTPUT_VRANGE_COMPRE_AUTO |
148 TPI_OUTPUT_CLR_HDMI_RGB;
149 dm_i2c_write(dev, TPI_OUTPUT_FMT_REG, &temp, 1);
150
151 /* Set TPI audio configuration write data */
152 temp = TPI_AUDIO_PASS_BASIC;
153 dm_i2c_write(dev, TPI_AUDIO_HANDING_REG, &temp, 1);
154
155 temp = TPI_AUDIO_INTF_I2S | TPI_AUDIO_INTF_NORMAL |
156 TPI_AUDIO_TYPE_PCM;
157 dm_i2c_write(dev, TPI_AUDIO_INTF_REG, &temp, 1);
158
159 temp = TPI_AUDIO_SAMP_SIZE_16BIT | TPI_AUDIO_SAMP_FREQ_44K;
160 dm_i2c_write(dev, TPI_AUDIO_FREQ_REG, &temp, 1);
161 #else
162 i2c_set_bus_num(CONFIG_SYS_I2C_DVI_BUS_NUM);
163
164 /* Enable TPI transmitter mode */
165 temp = TPI_TRANS_MODE_ENABLE;
166 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_TRANS_MODE_REG, 1, &temp, 1);
167
168 /* Enter into D0 state, full operation */
169 i2c_read(CONFIG_SYS_I2C_DVI_ADDR, TPI_PWR_STAT_REG, 1, &temp, 1);
170 temp &= ~TPI_PWR_STAT_MASK;
171 temp |= TPI_PWR_STAT_D0;
172 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_PWR_STAT_REG, 1, &temp, 1);
173
174 /* Enable source termination */
175 temp = TPI_SET_PAGE_SII9022A;
176 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_SET_PAGE_REG, 1, &temp, 1);
177 temp = TPI_SET_OFFSET_SII9022A;
178 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_SET_OFFSET_REG, 1, &temp, 1);
179
180 i2c_read(CONFIG_SYS_I2C_DVI_ADDR, TPI_RW_ACCESS_REG, 1, &temp, 1);
181 temp |= TPI_RW_EN_SRC_TERMIN;
182 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_RW_ACCESS_REG, 1, &temp, 1);
183
184 /* Set TPI system control */
185 temp = TPI_SYS_TMDS_OUTPUT | TPI_SYS_AV_NORAML | TPI_SYS_DVI_MODE;
186 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_SYS_CTRL_REG, 1, &temp, 1);
187
188 /* Set pixel clock */
189 temp1 = PICOS2KHZ(videomode->pixclock) / 10;
190 temp = (u8)(temp1 & 0xFF);
191 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, PIXEL_CLK_LSB_REG, 1, &temp, 1);
192 temp = (u8)(temp1 >> 8);
193 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, PIXEL_CLK_MSB_REG, 1, &temp, 1);
194
195 /* Set total pixels per line */
196 temp1 = videomode->hsync_len + videomode->left_margin +
197 videomode->xres + videomode->right_margin;
198 temp = (u8)(temp1 & 0xFF);
199 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TOTAL_PIXELS_LSB_REG, 1, &temp, 1);
200 temp = (u8)(temp1 >> 8);
201 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TOTAL_PIXELS_MSB_REG, 1, &temp, 1);
202
203 /* Set total lines */
204 temp2 = videomode->vsync_len + videomode->upper_margin +
205 videomode->yres + videomode->lower_margin;
206 temp = (u8)(temp2 & 0xFF);
207 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TOTAL_LINES_LSB_REG, 1, &temp, 1);
208 temp = (u8)(temp2 >> 8);
209 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TOTAL_LINES_MSB_REG, 1, &temp, 1);
210
211 /* Set vertical frequency in Hz */
212 temp3 = temp1 * temp2;
213 temp3 = (PICOS2KHZ(videomode->pixclock) * 1000) / temp3;
214 temp1 = (u16)temp3 * 100;
215 temp = (u8)(temp1 & 0xFF);
216 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, VERT_FREQ_LSB_REG, 1, &temp, 1);
217 temp = (u8)(temp1 >> 8);
218 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, VERT_FREQ_MSB_REG, 1, &temp, 1);
219
220 /* Set TPI input bus and pixel repetition data */
221 temp = TPI_INBUS_CLOCK_RATIO_1 | TPI_INBUS_FULL_PIXEL_WIDE |
222 TPI_INBUS_RISING_EDGE;
223 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_INBUS_FMT_REG, 1, &temp, 1);
224
225 /* Set TPI AVI Input format data */
226 temp = TPI_INPUT_CLR_DEPTH_8BIT | TPI_INPUT_VRANGE_EXPAN_AUTO |
227 TPI_INPUT_CLR_RGB;
228 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_INPUT_FMT_REG, 1, &temp, 1);
229
230 /* Set TPI AVI Output format data */
231 temp = TPI_OUTPUT_CLR_DEPTH_8BIT | TPI_OUTPUT_VRANGE_COMPRE_AUTO |
232 TPI_OUTPUT_CLR_HDMI_RGB;
233 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_OUTPUT_FMT_REG, 1, &temp, 1);
234
235 /* Set TPI audio configuration write data */
236 temp = TPI_AUDIO_PASS_BASIC;
237 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_AUDIO_HANDING_REG, 1, &temp, 1);
238
239 temp = TPI_AUDIO_INTF_I2S | TPI_AUDIO_INTF_NORMAL |
240 TPI_AUDIO_TYPE_PCM;
241 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_AUDIO_INTF_REG, 1, &temp, 1);
242
243 temp = TPI_AUDIO_SAMP_SIZE_16BIT | TPI_AUDIO_SAMP_FREQ_44K;
244 i2c_write(CONFIG_SYS_I2C_DVI_ADDR, TPI_AUDIO_FREQ_REG, 1, &temp, 1);
245 #endif
246
247 return 0;
248 }
249