Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 1 | #define USE_HW_I2C |
| 2 | #ifdef USE_HW_I2C |
| 3 | #include "ddk750_help.h" |
| 4 | #include "ddk750_reg.h" |
| 5 | #include "ddk750_hwi2c.h" |
| 6 | #include "ddk750_power.h" |
| 7 | |
| 8 | #define MAX_HWI2C_FIFO 16 |
| 9 | #define HWI2C_WAIT_TIMEOUT 0xF0000 |
| 10 | |
Mike Rapoport | 19f70ea | 2015-09-12 11:07:33 +0300 | [diff] [blame] | 11 | int sm750_hw_i2c_init( |
Mike Rapoport | a503da6 | 2015-09-12 11:07:43 +0300 | [diff] [blame] | 12 | unsigned char bus_speed_mode |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 13 | ) |
| 14 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 15 | unsigned int value; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 16 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 17 | /* Enable GPIO 30 & 31 as IIC clock & data */ |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 18 | value = PEEK32(GPIO_MUX); |
| 19 | |
Mike Rapoport | 2a5149e | 2016-01-17 20:04:23 +0200 | [diff] [blame] | 20 | value |= (GPIO_MUX_30 | GPIO_MUX_31); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 21 | POKE32(GPIO_MUX, value); |
| 22 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 23 | /* Enable Hardware I2C power. |
Elizabeth Ferdman | 35e4d8c | 2016-09-28 14:33:51 -0700 | [diff] [blame] | 24 | * TODO: Check if we need to enable GPIO power? |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 25 | */ |
| 26 | enableI2C(1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 27 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 28 | /* Enable the I2C Controller and set the bus speed mode */ |
Mike Rapoport | b71413e | 2016-02-10 18:34:20 +0200 | [diff] [blame] | 29 | value = PEEK32(I2C_CTRL) & ~(I2C_CTRL_MODE | I2C_CTRL_EN); |
| 30 | if (bus_speed_mode) |
| 31 | value |= I2C_CTRL_MODE; |
| 32 | value |= I2C_CTRL_EN; |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 33 | POKE32(I2C_CTRL, value); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 34 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 35 | return 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 36 | } |
| 37 | |
Mike Rapoport | ed7042e | 2015-09-12 11:07:34 +0300 | [diff] [blame] | 38 | void sm750_hw_i2c_close(void) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 39 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 40 | unsigned int value; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 41 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 42 | /* Disable I2C controller */ |
Mike Rapoport | b71413e | 2016-02-10 18:34:20 +0200 | [diff] [blame] | 43 | value = PEEK32(I2C_CTRL) & ~I2C_CTRL_EN; |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 44 | POKE32(I2C_CTRL, value); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 45 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 46 | /* Disable I2C Power */ |
| 47 | enableI2C(0); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 48 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 49 | /* Set GPIO 30 & 31 back as GPIO pins */ |
| 50 | value = PEEK32(GPIO_MUX); |
Mike Rapoport | 2a5149e | 2016-01-17 20:04:23 +0200 | [diff] [blame] | 51 | value &= ~GPIO_MUX_30; |
| 52 | value &= ~GPIO_MUX_31; |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 53 | POKE32(GPIO_MUX, value); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 54 | } |
| 55 | |
Mike Rapoport | ac11895 | 2015-09-12 11:07:37 +0300 | [diff] [blame] | 56 | static long hw_i2c_wait_tx_done(void) |
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 | unsigned int timeout; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 59 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 60 | /* Wait until the transfer is completed. */ |
| 61 | timeout = HWI2C_WAIT_TIMEOUT; |
Mike Rapoport | 3e155b8 | 2016-02-10 18:34:21 +0200 | [diff] [blame] | 62 | while (!(PEEK32(I2C_STATUS) & I2C_STATUS_TX) && (timeout != 0)) |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 63 | timeout--; |
| 64 | |
| 65 | if (timeout == 0) |
Amitoj Kaur Chawla | 732053a | 2016-02-24 22:30:15 +0530 | [diff] [blame] | 66 | return -1; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 67 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 68 | return 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 69 | } |
| 70 | |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 71 | /* |
| 72 | * This function writes data to the i2c slave device registers. |
| 73 | * |
| 74 | * Parameters: |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 75 | * addr - i2c Slave device address |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 76 | * length - Total number of bytes to be written to the device |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 77 | * buf - The buffer that contains the data to be written to the |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 78 | * i2c device. |
| 79 | * |
| 80 | * Return Value: |
| 81 | * Total number of bytes those are actually written. |
| 82 | */ |
Mike Rapoport | ac11895 | 2015-09-12 11:07:37 +0300 | [diff] [blame] | 83 | static unsigned int hw_i2c_write_data( |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 84 | unsigned char addr, |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 85 | unsigned int length, |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 86 | unsigned char *buf |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 87 | ) |
| 88 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 89 | unsigned char count, i; |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 90 | unsigned int total_bytes = 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 91 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 92 | /* Set the Device Address */ |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 93 | POKE32(I2C_SLAVE_ADDRESS, addr & ~0x01); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 94 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 95 | /* Write data. |
| 96 | * Note: |
| 97 | * Only 16 byte can be accessed per i2c start instruction. |
| 98 | */ |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 99 | do { |
Mike Rapoport | 9137f81 | 2015-09-12 11:07:49 +0300 | [diff] [blame] | 100 | /* |
| 101 | * Reset I2C by writing 0 to I2C_RESET register to |
| 102 | * clear the previous status. |
| 103 | */ |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 104 | POKE32(I2C_RESET, 0); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 105 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 106 | /* Set the number of bytes to be written */ |
| 107 | if (length < MAX_HWI2C_FIFO) |
| 108 | count = length - 1; |
| 109 | else |
| 110 | count = MAX_HWI2C_FIFO - 1; |
| 111 | POKE32(I2C_BYTE_COUNT, count); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 112 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 113 | /* Move the data to the I2C data register */ |
| 114 | for (i = 0; i <= count; i++) |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 115 | POKE32(I2C_DATA0 + i, *buf++); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 116 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 117 | /* Start the I2C */ |
Mike Rapoport | b71413e | 2016-02-10 18:34:20 +0200 | [diff] [blame] | 118 | POKE32(I2C_CTRL, PEEK32(I2C_CTRL) | I2C_CTRL_CTRL); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 119 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 120 | /* Wait until the transfer is completed. */ |
Mike Rapoport | ac11895 | 2015-09-12 11:07:37 +0300 | [diff] [blame] | 121 | if (hw_i2c_wait_tx_done() != 0) |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 122 | break; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 123 | |
Matej Vasek | fbb8c96 | 2016-01-25 16:02:33 +0100 | [diff] [blame] | 124 | /* Subtract length */ |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 125 | length -= (count + 1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 126 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 127 | /* Total byte written */ |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 128 | total_bytes += (count + 1); |
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 | } while (length > 0); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 131 | |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 132 | return total_bytes; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 133 | } |
| 134 | |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 135 | /* |
| 136 | * This function reads data from the slave device and stores them |
| 137 | * in the given buffer |
| 138 | * |
| 139 | * Parameters: |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 140 | * addr - i2c Slave device address |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 141 | * length - Total number of bytes to be read |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 142 | * buf - Pointer to a buffer to be filled with the data read |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 143 | * from the slave device. It has to be the same size as the |
| 144 | * length to make sure that it can keep all the data read. |
| 145 | * |
| 146 | * Return Value: |
| 147 | * Total number of actual bytes read from the slave device |
| 148 | */ |
Mike Rapoport | ac11895 | 2015-09-12 11:07:37 +0300 | [diff] [blame] | 149 | static unsigned int hw_i2c_read_data( |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 150 | unsigned char addr, |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 151 | unsigned int length, |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 152 | unsigned char *buf |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 153 | ) |
| 154 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 155 | unsigned char count, i; |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 156 | unsigned int total_bytes = 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 157 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 158 | /* Set the Device Address */ |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 159 | POKE32(I2C_SLAVE_ADDRESS, addr | 0x01); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 160 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 161 | /* Read data and save them to the buffer. |
| 162 | * Note: |
| 163 | * Only 16 byte can be accessed per i2c start instruction. |
| 164 | */ |
Juston Li | 259fef3 | 2015-07-14 21:14:45 -0700 | [diff] [blame] | 165 | do { |
Mike Rapoport | 9137f81 | 2015-09-12 11:07:49 +0300 | [diff] [blame] | 166 | /* |
| 167 | * Reset I2C by writing 0 to I2C_RESET register to |
| 168 | * clear all the status. |
| 169 | */ |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 170 | POKE32(I2C_RESET, 0); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 171 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 172 | /* Set the number of bytes to be read */ |
| 173 | if (length <= MAX_HWI2C_FIFO) |
| 174 | count = length - 1; |
| 175 | else |
| 176 | count = MAX_HWI2C_FIFO - 1; |
| 177 | POKE32(I2C_BYTE_COUNT, count); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 178 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 179 | /* Start the I2C */ |
Mike Rapoport | b71413e | 2016-02-10 18:34:20 +0200 | [diff] [blame] | 180 | POKE32(I2C_CTRL, PEEK32(I2C_CTRL) | I2C_CTRL_CTRL); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 181 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 182 | /* Wait until transaction done. */ |
Mike Rapoport | ac11895 | 2015-09-12 11:07:37 +0300 | [diff] [blame] | 183 | if (hw_i2c_wait_tx_done() != 0) |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 184 | break; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 185 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 186 | /* Save the data to the given buffer */ |
| 187 | for (i = 0; i <= count; i++) |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 188 | *buf++ = PEEK32(I2C_DATA0 + i); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 189 | |
Matej Vasek | fbb8c96 | 2016-01-25 16:02:33 +0100 | [diff] [blame] | 190 | /* Subtract length by 16 */ |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 191 | length -= (count + 1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 192 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 193 | /* Number of bytes read. */ |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 194 | total_bytes += (count + 1); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 195 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 196 | } while (length > 0); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 197 | |
Mike Rapoport | b3696b7 | 2015-09-12 11:07:45 +0300 | [diff] [blame] | 198 | return total_bytes; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 199 | } |
| 200 | |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 201 | /* |
| 202 | * This function reads the slave device's register |
| 203 | * |
| 204 | * Parameters: |
| 205 | * deviceAddress - i2c Slave device address which register |
| 206 | * to be read from |
| 207 | * registerIndex - Slave device's register to be read |
| 208 | * |
| 209 | * Return Value: |
| 210 | * Register value |
| 211 | */ |
Mike Rapoport | 5ccf734 | 2015-09-12 11:07:35 +0300 | [diff] [blame] | 212 | unsigned char sm750_hw_i2c_read_reg( |
Mike Rapoport | 938ad7e | 2015-09-12 11:07:44 +0300 | [diff] [blame] | 213 | unsigned char addr, |
| 214 | unsigned char reg |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 215 | ) |
| 216 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 217 | unsigned char value = (0xFF); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 218 | |
Mike Rapoport | 938ad7e | 2015-09-12 11:07:44 +0300 | [diff] [blame] | 219 | if (hw_i2c_write_data(addr, 1, ®) == 1) |
| 220 | hw_i2c_read_data(addr, 1, &value); |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 221 | |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 222 | return value; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 223 | } |
| 224 | |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 225 | /* |
| 226 | * This function writes a value to the slave device's register |
| 227 | * |
| 228 | * Parameters: |
| 229 | * deviceAddress - i2c Slave device address which register |
| 230 | * to be written |
| 231 | * registerIndex - Slave device's register to be written |
| 232 | * data - Data to be written to the register |
| 233 | * |
| 234 | * Result: |
| 235 | * 0 - Success |
| 236 | * -1 - Fail |
| 237 | */ |
Mike Rapoport | 6bdbe62 | 2015-09-12 11:07:36 +0300 | [diff] [blame] | 238 | int sm750_hw_i2c_write_reg( |
Mike Rapoport | 938ad7e | 2015-09-12 11:07:44 +0300 | [diff] [blame] | 239 | unsigned char addr, |
| 240 | unsigned char reg, |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 241 | unsigned char data |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 242 | ) |
| 243 | { |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 244 | unsigned char value[2]; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 245 | |
Mike Rapoport | 938ad7e | 2015-09-12 11:07:44 +0300 | [diff] [blame] | 246 | value[0] = reg; |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 247 | value[1] = data; |
Mike Rapoport | 938ad7e | 2015-09-12 11:07:44 +0300 | [diff] [blame] | 248 | if (hw_i2c_write_data(addr, 2, value) == 2) |
Juston Li | 7837653 | 2015-07-14 21:14:30 -0700 | [diff] [blame] | 249 | return 0; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 250 | |
Amitoj Kaur Chawla | 732053a | 2016-02-24 22:30:15 +0530 | [diff] [blame] | 251 | return -1; |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 252 | } |
| 253 | |
Sudip Mukherjee | 81dee67 | 2015-03-03 16:21:06 +0530 | [diff] [blame] | 254 | #endif |