diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-sh-msiof.c | 32 | ||||
| -rw-r--r-- | drivers/spi/spi-stm32.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-sun6i.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-tegra114.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-tegra20-sflash.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-tegra20-slink.c | 2 |
6 files changed, 28 insertions, 14 deletions
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index c304c7167866..0eb1e9583485 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -38,6 +38,7 @@ struct sh_msiof_chipdata { u16 tx_fifo_size; u16 rx_fifo_size; u16 master_flags; + u16 min_div; }; struct sh_msiof_spi_priv { @@ -49,6 +50,7 @@ struct sh_msiof_spi_priv { struct completion done; unsigned int tx_fifo_size; unsigned int rx_fifo_size; + unsigned int min_div; void *tx_dma_page; void *rx_dma_page; dma_addr_t tx_dma_addr; @@ -261,6 +263,8 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p, if (!WARN_ON(!spi_hz || !parent_rate)) div = DIV_ROUND_UP(parent_rate, spi_hz); + div = max_t(unsigned long, div, p->min_div); + for (k = 0; k < ARRAY_SIZE(sh_msiof_spi_div_table); k++) { brps = DIV_ROUND_UP(div, sh_msiof_spi_div_table[k].div); /* SCR_BRDV_DIV_1 is valid only if BRPS is x 1/1 or x 1/2 */ @@ -998,24 +1002,33 @@ static const struct sh_msiof_chipdata sh_data = { .tx_fifo_size = 64, .rx_fifo_size = 64, .master_flags = 0, + .min_div = 1, +}; + +static const struct sh_msiof_chipdata rcar_gen2_data = { + .tx_fifo_size = 64, + .rx_fifo_size = 64, + .master_flags = SPI_MASTER_MUST_TX, + .min_div = 1, }; -static const struct sh_msiof_chipdata r8a779x_data = { +static const struct sh_msiof_chipdata rcar_gen3_data = { .tx_fifo_size = 64, .rx_fifo_size = 64, .master_flags = SPI_MASTER_MUST_TX, + .min_div = 2, }; static const struct of_device_id sh_msiof_match[] = { { .compatible = "renesas,sh-mobile-msiof", .data = &sh_data }, - { .compatible = "renesas,msiof-r8a7790", .data = &r8a779x_data }, - { .compatible = "renesas,msiof-r8a7791", .data = &r8a779x_data }, - { .compatible = "renesas,msiof-r8a7792", .data = &r8a779x_data }, - { .compatible = "renesas,msiof-r8a7793", .data = &r8a779x_data }, - { .compatible = "renesas,msiof-r8a7794", .data = &r8a779x_data }, - { .compatible = "renesas,rcar-gen2-msiof", .data = &r8a779x_data }, - { .compatible = "renesas,msiof-r8a7796", .data = &r8a779x_data }, - { .compatible = "renesas,rcar-gen3-msiof", .data = &r8a779x_data }, + { .compatible = "renesas,msiof-r8a7790", .data = &rcar_gen2_data }, + { .compatible = "renesas,msiof-r8a7791", .data = &rcar_gen2_data }, + { .compatible = "renesas,msiof-r8a7792", .data = &rcar_gen2_data }, + { .compatible = "renesas,msiof-r8a7793", .data = &rcar_gen2_data }, + { .compatible = "renesas,msiof-r8a7794", .data = &rcar_gen2_data }, + { .compatible = "renesas,rcar-gen2-msiof", .data = &rcar_gen2_data }, + { .compatible = "renesas,msiof-r8a7796", .data = &rcar_gen3_data }, + { .compatible = "renesas,rcar-gen3-msiof", .data = &rcar_gen3_data }, { .compatible = "renesas,sh-msiof", .data = &sh_data }, /* Deprecated */ {}, }; @@ -1230,6 +1243,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) platform_set_drvdata(pdev, p); p->master = master; p->info = info; + p->min_div = chipdata->min_div; init_completion(&p->done); diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 75644bcd938b..680cdf549506 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -1132,7 +1132,7 @@ static int stm32_spi_probe(struct platform_device *pdev) goto err_master_put; } - spi->rst = devm_reset_control_get(&pdev->dev, NULL); + spi->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (!IS_ERR(spi->rst)) { reset_control_assert(spi->rst); udelay(2); diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 03a773a9531a..fb38234249a8 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -502,7 +502,7 @@ static int sun6i_spi_probe(struct platform_device *pdev) init_completion(&sspi->done); - sspi->rstc = devm_reset_control_get(&pdev->dev, NULL); + sspi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (IS_ERR(sspi->rstc)) { dev_err(&pdev->dev, "Couldn't get reset controller\n"); ret = PTR_ERR(sspi->rstc); diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index 08012ae5aa66..44550182a4a3 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -1083,7 +1083,7 @@ static int tegra_spi_probe(struct platform_device *pdev) goto exit_free_irq; } - tspi->rst = devm_reset_control_get(&pdev->dev, "spi"); + tspi->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi"); if (IS_ERR(tspi->rst)) { dev_err(&pdev->dev, "can not get reset\n"); ret = PTR_ERR(tspi->rst); diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c index 2c797ee2664d..22893a7e0aa0 100644 --- a/drivers/spi/spi-tegra20-sflash.c +++ b/drivers/spi/spi-tegra20-sflash.c @@ -485,7 +485,7 @@ static int tegra_sflash_probe(struct platform_device *pdev) goto exit_free_irq; } - tsd->rst = devm_reset_control_get(&pdev->dev, "spi"); + tsd->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi"); if (IS_ERR(tsd->rst)) { dev_err(&pdev->dev, "can not get reset\n"); ret = PTR_ERR(tsd->rst); diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index 0c06ce424210..3e12d5f87ee4 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -1081,7 +1081,7 @@ static int tegra_slink_probe(struct platform_device *pdev) goto exit_free_irq; } - tspi->rst = devm_reset_control_get(&pdev->dev, "spi"); + tspi->rst = devm_reset_control_get_exclusive(&pdev->dev, "spi"); if (IS_ERR(tspi->rst)) { dev_err(&pdev->dev, "can not get reset\n"); ret = PTR_ERR(tspi->rst); |