diff options
| author | Mario Alejandro Posso Escobar <mario.posso.escobar@intel.com> | 2020-11-16 17:32:45 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2020-12-03 21:20:53 +0100 |
| commit | 5e9a97b1f4491b8b65874901ad084348fcaba327 (patch) | |
| tree | 512aa4ed6aa8220f0ce8cdfef49e6aee89916edb /drivers/i2c | |
| parent | dc4e10b62695558a39aafa65210f5980125285b3 (diff) | |
| download | linux-5e9a97b1f4491b8b65874901ad084348fcaba327.tar.gz | |
i2c: ismt: Adding support for I2C_SMBUS_BLOCK_PROC_CALL
Expand the driver to support I2C_SMBUS_BLOCK_PROC_CALL since HW supports it already. Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mario Alejandro Posso Escobar <mario.posso.escobar@intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-ismt.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index a35a27c320e7..a6187cbec2c9 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -53,7 +53,7 @@ * Features supported by this driver: * Hardware PEC yes * Block buffer yes - * Block process call transaction no + * Block process call transaction yes * Slave mode no */ @@ -332,7 +332,8 @@ static int ismt_process_desc(const struct ismt_desc *desc, if (desc->status & ISMT_DESC_SCS) { if (read_write == I2C_SMBUS_WRITE && - size != I2C_SMBUS_PROC_CALL) + size != I2C_SMBUS_PROC_CALL && + size != I2C_SMBUS_BLOCK_PROC_CALL) return 0; switch (size) { @@ -345,6 +346,7 @@ static int ismt_process_desc(const struct ismt_desc *desc, data->word = dma_buffer[0] | (dma_buffer[1] << 8); break; case I2C_SMBUS_BLOCK_DATA: + case I2C_SMBUS_BLOCK_PROC_CALL: if (desc->rxbytes != dma_buffer[0] + 1) return -EMSGSIZE; @@ -518,6 +520,18 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr, } break; + case I2C_SMBUS_BLOCK_PROC_CALL: + dev_dbg(dev, "I2C_SMBUS_BLOCK_PROC_CALL\n"); + dma_size = I2C_SMBUS_BLOCK_MAX; + desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, 1); + desc->wr_len_cmd = data->block[0] + 1; + desc->rd_len = dma_size; + desc->control |= ISMT_DESC_BLK; + dma_direction = DMA_BIDIRECTIONAL; + dma_buffer[0] = command; + memcpy(&dma_buffer[1], &data->block[1], data->block[0]); + break; + case I2C_SMBUS_I2C_BLOCK_DATA: /* Make sure the length is valid */ if (data->block[0] < 1) @@ -624,6 +638,7 @@ static u32 ismt_func(struct i2c_adapter *adap) I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_PROC_CALL | + I2C_FUNC_SMBUS_BLOCK_PROC_CALL | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_PEC; |