Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 1 | #define USE_DVICHIP |
| 2 | #ifdef USE_DVICHIP |
| 3 | |
| 4 | #include "ddk750_sii164.h" |
| 5 | #include "ddk750_hwi2c.h" |
| 6 | |
| 7 | /* I2C Address of each SII164 chip */ |
| 8 | #define SII164_I2C_ADDRESS 0x70 |
| 9 | |
| 10 | /* Define this definition to use hardware i2c. */ |
| 11 | #define USE_HW_I2C |
| 12 | |
| 13 | #ifdef USE_HW_I2C |
Mike Rapoport | 6bdbe62 | 2015-09-12 11:07:36 +0300 | [diff] [blame] | 14 | #define i2cWriteReg sm750_hw_i2c_write_reg |
Mike Rapoport | 5ccf734 | 2015-09-12 11:07:35 +0300 | [diff] [blame] | 15 | #define i2cReadReg sm750_hw_i2c_read_reg |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 16 | #else |
Mike Rapoport | 9a35714 | 2016-01-17 20:04:22 +0200 | [diff] [blame] | 17 | #define i2cWriteReg sm750_sw_i2c_write_reg |
| 18 | #define i2cReadReg sm750_sw_i2c_read_reg |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 19 | #endif |
| 20 | |
| 21 | /* SII164 Vendor and Device ID */ |
| 22 | #define SII164_VENDOR_ID 0x0001 |
| 23 | #define SII164_DEVICE_ID 0x0006 |
| 24 | |
| 25 | #ifdef SII164_FULL_FUNCTIONS |
| 26 | /* Name of the DVI Controller chip */ |
| 27 | static char *gDviCtrlChipName = "Silicon Image SiI 164"; |
| 28 | #endif |
| 29 | |
| 30 | /* |
| 31 | * sii164GetVendorID |
| 32 | * This function gets the vendor ID of the DVI controller chip. |
| 33 | * |
| 34 | * Output: |
| 35 | * Vendor ID |
| 36 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 37 | unsigned short sii164GetVendorID(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 38 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 39 | unsigned short vendorID; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 40 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 41 | vendorID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_HIGH) << 8) | |
| 42 | (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_LOW); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 43 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 44 | return vendorID; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | /* |
| 48 | * sii164GetDeviceID |
| 49 | * This function gets the device ID of the DVI controller chip. |
| 50 | * |
| 51 | * Output: |
| 52 | * Device ID |
| 53 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 54 | unsigned short sii164GetDeviceID(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 55 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 56 | unsigned short deviceID; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 57 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 58 | deviceID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_HIGH) << 8) | |
| 59 | (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_LOW); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 60 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 61 | return deviceID; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | |
| 65 | |
| 66 | /* DVI.C will handle all SiI164 chip stuffs and try it best to make code minimal and useful */ |
| 67 | |
| 68 | /* |
| 69 | * sii164InitChip |
| 70 | * This function initialize and detect the DVI controller chip. |
| 71 | * |
| 72 | * Input: |
| 73 | * edgeSelect - Edge Select: |
| 74 | * 0 = Input data is falling edge latched (falling edge |
| 75 | * latched first in dual edge mode) |
| 76 | * 1 = Input data is rising edge latched (rising edge |
| 77 | * latched first in dual edge mode) |
| 78 | * busSelect - Input Bus Select: |
| 79 | * 0 = Input data bus is 12-bits wide |
| 80 | * 1 = Input data bus is 24-bits wide |
| 81 | * dualEdgeClkSelect - Dual Edge Clock Select |
| 82 | * 0 = Input data is single edge latched |
| 83 | * 1 = Input data is dual edge latched |
| 84 | * hsyncEnable - Horizontal Sync Enable: |
| 85 | * 0 = HSYNC input is transmitted as fixed LOW |
| 86 | * 1 = HSYNC input is transmitted as is |
| 87 | * vsyncEnable - Vertical Sync Enable: |
| 88 | * 0 = VSYNC input is transmitted as fixed LOW |
| 89 | * 1 = VSYNC input is transmitted as is |
| 90 | * deskewEnable - De-skewing Enable: |
| 91 | * 0 = De-skew disabled |
| 92 | * 1 = De-skew enabled |
| 93 | * deskewSetting - De-skewing Setting (increment of 260psec) |
| 94 | * 0 = 1 step --> minimum setup / maximum hold |
| 95 | * 1 = 2 step |
| 96 | * 2 = 3 step |
| 97 | * 3 = 4 step |
| 98 | * 4 = 5 step |
| 99 | * 5 = 6 step |
| 100 | * 6 = 7 step |
| 101 | * 7 = 8 step --> maximum setup / minimum hold |
| 102 | * continuousSyncEnable- SYNC Continuous: |
| 103 | * 0 = Disable |
| 104 | * 1 = Enable |
| 105 | * pllFilterEnable - PLL Filter Enable |
| 106 | * 0 = Disable PLL Filter |
| 107 | * 1 = Enable PLL Filter |
| 108 | * pllFilterValue - PLL Filter characteristics: |
| 109 | * 0~7 (recommended value is 4) |
| 110 | * |
| 111 | * Output: |
| 112 | * 0 - Success |
| 113 | * -1 - Fail. |
| 114 | */ |
| 115 | long sii164InitChip( |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 116 | unsigned char edgeSelect, |
| 117 | unsigned char busSelect, |
| 118 | unsigned char dualEdgeClkSelect, |
| 119 | unsigned char hsyncEnable, |
| 120 | unsigned char vsyncEnable, |
| 121 | unsigned char deskewEnable, |
| 122 | unsigned char deskewSetting, |
| 123 | unsigned char continuousSyncEnable, |
| 124 | unsigned char pllFilterEnable, |
| 125 | unsigned char pllFilterValue |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 126 | ) |
| 127 | { |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 128 | unsigned char config; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 129 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 130 | /* Initialize the i2c bus */ |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 131 | #ifdef USE_HW_I2C |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 132 | /* Use fast mode. */ |
Mike Rapoport | 19f70ea | 2015-09-12 11:07:33 +0300 | [diff] [blame] | 133 | sm750_hw_i2c_init(1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 134 | #else |
Mike Rapoport | f2ea773 | 2015-09-12 11:07:38 +0300 | [diff] [blame] | 135 | sm750_sw_i2c_init(DEFAULT_I2C_SCL, DEFAULT_I2C_SDA); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 136 | #endif |
| 137 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 138 | /* Check if SII164 Chip exists */ |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 139 | if ((sii164GetVendorID() == SII164_VENDOR_ID) && (sii164GetDeviceID() == SII164_DEVICE_ID)) { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 140 | /* |
| 141 | * Initialize SII164 controller chip. |
| 142 | */ |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 143 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 144 | /* Select the edge */ |
| 145 | if (edgeSelect == 0) |
| 146 | config = SII164_CONFIGURATION_LATCH_FALLING; |
| 147 | else |
| 148 | config = SII164_CONFIGURATION_LATCH_RISING; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 149 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 150 | /* Select bus wide */ |
| 151 | if (busSelect == 0) |
| 152 | config |= SII164_CONFIGURATION_BUS_12BITS; |
| 153 | else |
| 154 | config |= SII164_CONFIGURATION_BUS_24BITS; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 155 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 156 | /* Select Dual/Single Edge Clock */ |
| 157 | if (dualEdgeClkSelect == 0) |
| 158 | config |= SII164_CONFIGURATION_CLOCK_SINGLE; |
| 159 | else |
| 160 | config |= SII164_CONFIGURATION_CLOCK_DUAL; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 161 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 162 | /* Select HSync Enable */ |
| 163 | if (hsyncEnable == 0) |
| 164 | config |= SII164_CONFIGURATION_HSYNC_FORCE_LOW; |
| 165 | else |
| 166 | config |= SII164_CONFIGURATION_HSYNC_AS_IS; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 167 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 168 | /* Select VSync Enable */ |
| 169 | if (vsyncEnable == 0) |
| 170 | config |= SII164_CONFIGURATION_VSYNC_FORCE_LOW; |
| 171 | else |
| 172 | config |= SII164_CONFIGURATION_VSYNC_AS_IS; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 173 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 174 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 175 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 176 | /* De-skew enabled with default 111b value. |
Elizabeth Ferdman | 35e4d8c | 2016-09-28 14:33:51 -0700 | [diff] [blame] | 177 | * This fixes some artifacts problem in some mode on board 2.2. |
| 178 | * Somehow this fix does not affect board 2.1. |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 179 | */ |
| 180 | if (deskewEnable == 0) |
| 181 | config = SII164_DESKEW_DISABLE; |
| 182 | else |
| 183 | config = SII164_DESKEW_ENABLE; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 184 | |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 185 | switch (deskewSetting) { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 186 | case 0: |
| 187 | config |= SII164_DESKEW_1_STEP; |
| 188 | break; |
| 189 | case 1: |
| 190 | config |= SII164_DESKEW_2_STEP; |
| 191 | break; |
| 192 | case 2: |
| 193 | config |= SII164_DESKEW_3_STEP; |
| 194 | break; |
| 195 | case 3: |
| 196 | config |= SII164_DESKEW_4_STEP; |
| 197 | break; |
| 198 | case 4: |
| 199 | config |= SII164_DESKEW_5_STEP; |
| 200 | break; |
| 201 | case 5: |
| 202 | config |= SII164_DESKEW_6_STEP; |
| 203 | break; |
| 204 | case 6: |
| 205 | config |= SII164_DESKEW_7_STEP; |
| 206 | break; |
| 207 | case 7: |
| 208 | config |= SII164_DESKEW_8_STEP; |
| 209 | break; |
| 210 | } |
| 211 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DESKEW, config); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 212 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 213 | /* Enable/Disable Continuous Sync. */ |
| 214 | if (continuousSyncEnable == 0) |
| 215 | config = SII164_PLL_FILTER_SYNC_CONTINUOUS_DISABLE; |
| 216 | else |
| 217 | config = SII164_PLL_FILTER_SYNC_CONTINUOUS_ENABLE; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 218 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 219 | /* Enable/Disable PLL Filter */ |
| 220 | if (pllFilterEnable == 0) |
| 221 | config |= SII164_PLL_FILTER_DISABLE; |
| 222 | else |
| 223 | config |= SII164_PLL_FILTER_ENABLE; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 224 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 225 | /* Set the PLL Filter value */ |
| 226 | config |= ((pllFilterValue & 0x07) << 1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 227 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 228 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_PLL, config); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 229 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 230 | /* Recover from Power Down and enable output. */ |
| 231 | config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION); |
| 232 | config |= SII164_CONFIGURATION_POWER_NORMAL; |
| 233 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 234 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 235 | return 0; |
| 236 | } |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 237 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 238 | /* Return -1 if initialization fails. */ |
Amitoj Kaur Chawla | 732053a | 2016-02-24 22:30:15 +0530 | [diff] [blame] | 239 | return -1; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | |
| 243 | |
| 244 | |
| 245 | |
Carlos E. Garcia | 69e98df | 2015-04-24 09:40:42 -0400 | [diff] [blame] | 246 | /* below sii164 function is not necessary */ |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 247 | |
| 248 | #ifdef SII164_FULL_FUNCTIONS |
| 249 | |
| 250 | /* |
| 251 | * sii164ResetChip |
| 252 | * This function resets the DVI Controller Chip. |
| 253 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 254 | void sii164ResetChip(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 255 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 256 | /* Power down */ |
| 257 | sii164SetPower(0); |
| 258 | sii164SetPower(1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | |
| 262 | /* |
| 263 | * sii164GetChipString |
| 264 | * This function returns a char string name of the current DVI Controller chip. |
| 265 | * It's convenient for application need to display the chip name. |
| 266 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 267 | char *sii164GetChipString(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 268 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 269 | return gDviCtrlChipName; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | |
| 273 | /* |
| 274 | * sii164SetPower |
| 275 | * This function sets the power configuration of the DVI Controller Chip. |
| 276 | * |
| 277 | * Input: |
| 278 | * powerUp - Flag to set the power down or up |
| 279 | */ |
| 280 | void sii164SetPower( |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 281 | unsigned char powerUp |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 282 | ) |
| 283 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 284 | unsigned char config; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 285 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 286 | config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION); |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 287 | if (powerUp == 1) { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 288 | /* Power up the chip */ |
| 289 | config &= ~SII164_CONFIGURATION_POWER_MASK; |
| 290 | config |= SII164_CONFIGURATION_POWER_NORMAL; |
| 291 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 292 | } else { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 293 | /* Power down the chip */ |
| 294 | config &= ~SII164_CONFIGURATION_POWER_MASK; |
| 295 | config |= SII164_CONFIGURATION_POWER_DOWN; |
| 296 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); |
| 297 | } |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | |
| 301 | /* |
| 302 | * sii164SelectHotPlugDetectionMode |
| 303 | * This function selects the mode of the hot plug detection. |
| 304 | */ |
| 305 | static void sii164SelectHotPlugDetectionMode( |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 306 | sii164_hot_plug_mode_t hotPlugMode |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 307 | ) |
| 308 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 309 | unsigned char detectReg; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 310 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 311 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & ~SII164_DETECT_MONITOR_SENSE_OUTPUT_FLAG; |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 312 | switch (hotPlugMode) { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 313 | case SII164_HOTPLUG_DISABLE: |
| 314 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HIGH; |
| 315 | break; |
| 316 | case SII164_HOTPLUG_USE_MDI: |
| 317 | detectReg &= ~SII164_DETECT_INTERRUPT_MASK; |
| 318 | detectReg |= SII164_DETECT_INTERRUPT_BY_HTPLG_PIN; |
| 319 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_MDI; |
| 320 | break; |
| 321 | case SII164_HOTPLUG_USE_RSEN: |
| 322 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_RSEN; |
| 323 | break; |
| 324 | case SII164_HOTPLUG_USE_HTPLG: |
| 325 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HTPLG; |
| 326 | break; |
| 327 | } |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 328 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 329 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /* |
| 333 | * sii164EnableHotPlugDetection |
| 334 | * This function enables the Hot Plug detection. |
| 335 | * |
| 336 | * enableHotPlug - Enable (=1) / disable (=0) Hot Plug detection |
| 337 | */ |
| 338 | void sii164EnableHotPlugDetection( |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 339 | unsigned char enableHotPlug |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 340 | ) |
| 341 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 342 | unsigned char detectReg; |
Juston Li | 40403c1 | 2015-07-14 21:14:48 -0700 | [diff] [blame] | 343 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 344 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 345 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 346 | /* Depending on each DVI controller, need to enable the hot plug based on each |
Elizabeth Ferdman | 35e4d8c | 2016-09-28 14:33:51 -0700 | [diff] [blame] | 347 | * individual chip design. |
| 348 | */ |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 349 | if (enableHotPlug != 0) |
| 350 | sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_USE_MDI); |
| 351 | else |
| 352 | sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_DISABLE); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 353 | } |
| 354 | |
| 355 | /* |
| 356 | * sii164IsConnected |
| 357 | * Check if the DVI Monitor is connected. |
| 358 | * |
| 359 | * Output: |
| 360 | * 0 - Not Connected |
| 361 | * 1 - Connected |
| 362 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 363 | unsigned char sii164IsConnected(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 364 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 365 | unsigned char hotPlugValue; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 366 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 367 | hotPlugValue = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_HOT_PLUG_STATUS_MASK; |
| 368 | if (hotPlugValue == SII164_DETECT_HOT_PLUG_STATUS_ON) |
| 369 | return 1; |
| 370 | else |
| 371 | return 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | /* |
| 375 | * sii164CheckInterrupt |
Carlos E. Garcia | 69e98df | 2015-04-24 09:40:42 -0400 | [diff] [blame] | 376 | * Checks if interrupt has occurred. |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 377 | * |
| 378 | * Output: |
| 379 | * 0 - No interrupt |
| 380 | * 1 - Interrupt occurs |
| 381 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 382 | unsigned char sii164CheckInterrupt(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 383 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 384 | unsigned char detectReg; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 385 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 386 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_MONITOR_STATE_MASK; |
| 387 | if (detectReg == SII164_DETECT_MONITOR_STATE_CHANGE) |
| 388 | return 1; |
| 389 | else |
| 390 | return 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | /* |
| 394 | * sii164ClearInterrupt |
| 395 | * Clear the hot plug interrupt. |
| 396 | */ |
Supriya Karanth | 6fa7db8 | 2015-03-12 01:11:00 +0900 | [diff] [blame] | 397 | void sii164ClearInterrupt(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 398 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 399 | unsigned char detectReg; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 400 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 401 | /* Clear the MDI interrupt */ |
| 402 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT); |
| 403 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg | SII164_DETECT_MONITOR_STATE_CLEAR); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | #endif |
| 407 | |
| 408 | #endif |
| 409 | |
| 410 | |