diff options
| -rw-r--r-- | drivers/spi/spi-tegra20-slink.c | 73 |
1 files changed, 25 insertions, 48 deletions
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index 6a726c95ac7a..501eca1d0f89 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -1061,33 +1061,12 @@ static int tegra_slink_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Can not get clock %d\n", ret); goto exit_free_master; } - ret = clk_prepare(tspi->clk); - if (ret < 0) { - dev_err(&pdev->dev, "Clock prepare failed %d\n", ret); - goto exit_free_master; - } - ret = clk_enable(tspi->clk); - if (ret < 0) { - dev_err(&pdev->dev, "Clock enable failed %d\n", ret); - goto exit_clk_unprepare; - } - - spi_irq = platform_get_irq(pdev, 0); - tspi->irq = spi_irq; - ret = request_threaded_irq(tspi->irq, tegra_slink_isr, - tegra_slink_isr_thread, IRQF_ONESHOT, - dev_name(&pdev->dev), tspi); - if (ret < 0) { - dev_err(&pdev->dev, "Failed to register ISR for IRQ %d\n", - tspi->irq); - goto exit_clk_disable; - } 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); - goto exit_free_irq; + goto exit_free_master; } tspi->max_buf_size = SLINK_FIFO_DEPTH << 2; @@ -1095,7 +1074,7 @@ static int tegra_slink_probe(struct platform_device *pdev) ret = tegra_slink_init_dma_param(tspi, true); if (ret < 0) - goto exit_free_irq; + goto exit_free_master; ret = tegra_slink_init_dma_param(tspi, false); if (ret < 0) goto exit_rx_dma_free; @@ -1106,16 +1085,9 @@ static int tegra_slink_probe(struct platform_device *pdev) init_completion(&tspi->xfer_completion); pm_runtime_enable(&pdev->dev); - if (!pm_runtime_enabled(&pdev->dev)) { - ret = tegra_slink_runtime_resume(&pdev->dev); - if (ret) - goto exit_pm_disable; - } - - ret = pm_runtime_get_sync(&pdev->dev); - if (ret < 0) { + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) { dev_err(&pdev->dev, "pm runtime get failed, e = %d\n", ret); - pm_runtime_put_noidle(&pdev->dev); goto exit_pm_disable; } @@ -1123,33 +1095,43 @@ static int tegra_slink_probe(struct platform_device *pdev) udelay(2); reset_control_deassert(tspi->rst); + spi_irq = platform_get_irq(pdev, 0); + tspi->irq = spi_irq; + ret = request_threaded_irq(tspi->irq, tegra_slink_isr, + tegra_slink_isr_thread, IRQF_ONESHOT, + dev_name(&pdev->dev), tspi); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to register ISR for IRQ %d\n", + tspi->irq); + goto exit_pm_put; + } + tspi->def_command_reg = SLINK_M_S; tspi->def_command2_reg = SLINK_CS_ACTIVE_BETWEEN; tegra_slink_writel(tspi, tspi->def_command_reg, SLINK_COMMAND); tegra_slink_writel(tspi, tspi->def_command2_reg, SLINK_COMMAND2); - pm_runtime_put(&pdev->dev); master->dev.of_node = pdev->dev.of_node; ret = devm_spi_register_master(&pdev->dev, master); if (ret < 0) { dev_err(&pdev->dev, "can not register to master err %d\n", ret); - goto exit_pm_disable; + goto exit_free_irq; } + + pm_runtime_put(&pdev->dev); + return ret; +exit_free_irq: + free_irq(spi_irq, tspi); +exit_pm_put: + pm_runtime_put(&pdev->dev); exit_pm_disable: pm_runtime_disable(&pdev->dev); - if (!pm_runtime_status_suspended(&pdev->dev)) - tegra_slink_runtime_suspend(&pdev->dev); + tegra_slink_deinit_dma_param(tspi, false); exit_rx_dma_free: tegra_slink_deinit_dma_param(tspi, true); -exit_free_irq: - free_irq(spi_irq, tspi); -exit_clk_disable: - clk_disable(tspi->clk); -exit_clk_unprepare: - clk_unprepare(tspi->clk); exit_free_master: spi_master_put(master); return ret; @@ -1162,8 +1144,7 @@ static int tegra_slink_remove(struct platform_device *pdev) free_irq(tspi->irq, tspi); - clk_disable(tspi->clk); - clk_unprepare(tspi->clk); + pm_runtime_disable(&pdev->dev); if (tspi->tx_dma_chan) tegra_slink_deinit_dma_param(tspi, false); @@ -1171,10 +1152,6 @@ static int tegra_slink_remove(struct platform_device *pdev) if (tspi->rx_dma_chan) tegra_slink_deinit_dma_param(tspi, true); - pm_runtime_disable(&pdev->dev); - if (!pm_runtime_status_suspended(&pdev->dev)) - tegra_slink_runtime_suspend(&pdev->dev); - return 0; } |