From: Stephen Warren <[email protected]> There is no code to set spi->controller_data, and hence the HW CS logic can never trigger. Remove the unused code.
Signed-off-by: Stephen Warren <[email protected]> --- drivers/spi/spi-tegra20-slink.c | 32 +------------------------------- 1 file changed, 1 insertion(+), 31 deletions(-) diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index b8698b3..00f1b06 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -189,7 +189,6 @@ struct tegra_slink_data { unsigned dma_buf_size; unsigned max_buf_size; bool is_curr_dma_xfer; - bool is_hw_based_cs; struct completion rx_dma_complete; struct completion tx_dma_complete; @@ -720,7 +719,6 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi, u8 bits_per_word; unsigned total_fifo_words; int ret; - struct tegra_spi_device_controller_data *cdata = spi->controller_data; unsigned long command; unsigned long command2; @@ -743,39 +741,11 @@ static int tegra_slink_start_transfer_one(struct spi_device *spi, command = tspi->def_command_reg; command |= SLINK_BIT_LENGTH(bits_per_word - 1); + command |= SLINK_CS_SW | SLINK_CS_VALUE; command2 = tspi->def_command2_reg; command2 |= SLINK_SS_EN_CS(spi->chip_select); - /* possibly use the hw based chip select */ - tspi->is_hw_based_cs = false; - if (cdata && cdata->is_hw_based_cs && is_single_xfer && - ((tspi->curr_dma_words * tspi->bytes_per_word) == - (t->len - tspi->cur_pos))) { - int setup_count; - int sts2; - - setup_count = cdata->cs_setup_clk_count >> 1; - setup_count = max(setup_count, 3); - command2 |= SLINK_SS_SETUP(setup_count); - if (tspi->chip_data->cs_hold_time) { - int hold_count; - - hold_count = cdata->cs_hold_clk_count; - hold_count = max(hold_count, 0xF); - sts2 = tegra_slink_readl(tspi, SLINK_STATUS2); - sts2 &= ~SLINK_SS_HOLD_TIME(0xF); - sts2 |= SLINK_SS_HOLD_TIME(hold_count); - tegra_slink_writel(tspi, sts2, SLINK_STATUS2); - } - tspi->is_hw_based_cs = true; - } - - if (tspi->is_hw_based_cs) - command &= ~SLINK_CS_SW; - else - command |= SLINK_CS_SW | SLINK_CS_VALUE; - command &= ~SLINK_MODES; if (spi->mode & SPI_CPHA) command |= SLINK_CK_SDA; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
