diff options
Diffstat (limited to 'drivers/spi/spi-rockchip.c')
| -rw-r--r-- | drivers/spi/spi-rockchip.c | 60 |
1 files changed, 31 insertions, 29 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 0b4a52b3e1dc..fdcf3076681b 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -568,7 +568,13 @@ static void rockchip_spi_config(struct rockchip_spi *rs) writel_relaxed(cr0, rs->regs + ROCKCHIP_SPI_CTRLR0); - writel_relaxed(rs->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + if (rs->n_bytes == 1) + writel_relaxed(rs->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + else if (rs->n_bytes == 2) + writel_relaxed((rs->len / 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + else + writel_relaxed((rs->len * 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); + writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_TXFTLR); writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_RXFTLR); @@ -666,7 +672,7 @@ static bool rockchip_spi_can_dma(struct spi_master *master, static int rockchip_spi_probe(struct platform_device *pdev) { - int ret = 0; + int ret; struct rockchip_spi *rs; struct spi_master *master; struct resource *mem; @@ -703,13 +709,13 @@ static int rockchip_spi_probe(struct platform_device *pdev) } ret = clk_prepare_enable(rs->apb_pclk); - if (ret) { + if (ret < 0) { dev_err(&pdev->dev, "Failed to enable apb_pclk\n"); goto err_put_master; } ret = clk_prepare_enable(rs->spiclk); - if (ret) { + if (ret < 0) { dev_err(&pdev->dev, "Failed to enable spi_clk\n"); goto err_disable_apbclk; } @@ -786,7 +792,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) } ret = devm_spi_register_master(&pdev->dev, master); - if (ret) { + if (ret < 0) { dev_err(&pdev->dev, "Failed to register master\n"); goto err_free_dma_rx; } @@ -816,11 +822,15 @@ static int rockchip_spi_remove(struct platform_device *pdev) struct spi_master *master = spi_master_get(platform_get_drvdata(pdev)); struct rockchip_spi *rs = spi_master_get_devdata(master); - pm_runtime_disable(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); clk_disable_unprepare(rs->spiclk); clk_disable_unprepare(rs->apb_pclk); + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + if (rs->dma_tx.ch) dma_release_channel(rs->dma_tx.ch); if (rs->dma_rx.ch) @@ -834,43 +844,34 @@ static int rockchip_spi_remove(struct platform_device *pdev) #ifdef CONFIG_PM_SLEEP static int rockchip_spi_suspend(struct device *dev) { - int ret = 0; + int ret; struct spi_master *master = dev_get_drvdata(dev); struct rockchip_spi *rs = spi_master_get_devdata(master); ret = spi_master_suspend(rs->master); - if (ret) + if (ret < 0) return ret; - if (!pm_runtime_suspended(dev)) { - clk_disable_unprepare(rs->spiclk); - clk_disable_unprepare(rs->apb_pclk); - } + ret = pm_runtime_force_suspend(dev); + if (ret < 0) + return ret; pinctrl_pm_select_sleep_state(dev); - return ret; + return 0; } static int rockchip_spi_resume(struct device *dev) { - int ret = 0; + int ret; struct spi_master *master = dev_get_drvdata(dev); struct rockchip_spi *rs = spi_master_get_devdata(master); pinctrl_pm_select_default_state(dev); - if (!pm_runtime_suspended(dev)) { - ret = clk_prepare_enable(rs->apb_pclk); - if (ret < 0) - return ret; - - ret = clk_prepare_enable(rs->spiclk); - if (ret < 0) { - clk_disable_unprepare(rs->apb_pclk); - return ret; - } - } + ret = pm_runtime_force_resume(dev); + if (ret < 0) + return ret; ret = spi_master_resume(rs->master); if (ret < 0) { @@ -878,7 +879,7 @@ static int rockchip_spi_resume(struct device *dev) clk_disable_unprepare(rs->apb_pclk); } - return ret; + return 0; } #endif /* CONFIG_PM_SLEEP */ @@ -901,14 +902,14 @@ static int rockchip_spi_runtime_resume(struct device *dev) struct rockchip_spi *rs = spi_master_get_devdata(master); ret = clk_prepare_enable(rs->apb_pclk); - if (ret) + if (ret < 0) return ret; ret = clk_prepare_enable(rs->spiclk); - if (ret) + if (ret < 0) clk_disable_unprepare(rs->apb_pclk); - return ret; + return 0; } #endif /* CONFIG_PM */ @@ -919,6 +920,7 @@ static const struct dev_pm_ops rockchip_spi_pm = { }; static const struct of_device_id rockchip_spi_dt_match[] = { + { .compatible = "rockchip,rv1108-spi", }, { .compatible = "rockchip,rk3036-spi", }, { .compatible = "rockchip,rk3066-spi", }, { .compatible = "rockchip,rk3188-spi", }, |