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spi: rockchip: Add sclk_in gate support

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Change-Id: If757c7e23f8e9791991a2e4e4eb769a8c3d56eeb
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2022-04-25 16:49:08 +08:00
committed by Tao Huang
parent 1d51332e49
commit a3cc38e65d
1 changed files with 20 additions and 3 deletions
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23
drivers/spi/spi-rockchip.c
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@@ -173,6 +173,7 @@ struct rockchip_spi {
struct clk *spiclk;
struct clk *apb_pclk;
struct clk *sclk_in;
void __iomem *regs;
dma_addr_t dma_addr_rx;
@@ -800,6 +801,13 @@ static int rockchip_spi_probe(struct platform_device *pdev)
goto err_put_ctlr;
}
rs->sclk_in = devm_clk_get_optional(&pdev->dev, "sclk_in");
if (IS_ERR(rs->sclk_in)) {
dev_err(&pdev->dev, "Failed to get sclk_in\n");
ret = PTR_ERR(rs->sclk_in);
goto err_put_ctlr;
}
ret = clk_prepare_enable(rs->apb_pclk);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to enable apb_pclk\n");
@@ -812,16 +820,22 @@ static int rockchip_spi_probe(struct platform_device *pdev)
goto err_disable_apbclk;
}
ret = clk_prepare_enable(rs->sclk_in);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to enable sclk_in\n");
goto err_disable_spiclk;
}
spi_enable_chip(rs, false);
ret = platform_get_irq(pdev, 0);
if (ret < 0)
goto err_disable_spiclk;
goto err_disable_sclk_in;
ret = devm_request_threaded_irq(&pdev->dev, ret, rockchip_spi_isr, NULL,
IRQF_ONESHOT, dev_name(&pdev->dev), ctlr);
if (ret)
goto err_disable_spiclk;
goto err_disable_sclk_in;
rs->dev = &pdev->dev;
rs->freq = clk_get_rate(rs->spiclk);
@@ -847,7 +861,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
if (!rs->fifo_len) {
dev_err(&pdev->dev, "Failed to get fifo length\n");
ret = -EINVAL;
goto err_disable_spiclk;
goto err_disable_sclk_in;
}
pm_runtime_set_active(&pdev->dev);
@@ -947,6 +961,8 @@ err_free_dma_tx:
dma_release_channel(ctlr->dma_tx);
err_disable_pm_runtime:
pm_runtime_disable(&pdev->dev);
err_disable_sclk_in:
clk_disable_unprepare(rs->sclk_in);
err_disable_spiclk:
clk_disable_unprepare(rs->spiclk);
err_disable_apbclk:
@@ -964,6 +980,7 @@ static int rockchip_spi_remove(struct platform_device *pdev)
pm_runtime_get_sync(&pdev->dev);
clk_disable_unprepare(rs->sclk_in);
clk_disable_unprepare(rs->spiclk);
clk_disable_unprepare(rs->apb_pclk);