spi: tegra210-quad: use device_reset method

Use device_reset api to replace duplicate code in driver to call
reset_control_get api with reset handle.

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Link: https://lore.kernel.org/r/20220222175611.58051-2-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index cb00ac2..a353f2a 100644 (file)
--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -137,7 +137,6 @@ struct tegra_qspi {
        spinlock_t                              lock;
 
        struct clk                              *clk;
-       struct reset_control                    *rst;
        void __iomem                            *base;
        phys_addr_t                             phys;
        unsigned int                            irq;
@@ -948,9 +947,8 @@ static void tegra_qspi_handle_error(struct tegra_qspi *tqspi)
        dev_err(tqspi->dev, "error in transfer, fifo status 0x%08x\n", tqspi->status_reg);
        tegra_qspi_dump_regs(tqspi);
        tegra_qspi_flush_fifos(tqspi, true);
-       reset_control_assert(tqspi->rst);
-       udelay(2);
-       reset_control_deassert(tqspi->rst);
+       if (device_reset(tqspi->dev) < 0)
+               dev_warn_once(tqspi->dev, "device reset failed\n");
 }
 
 static void tegra_qspi_transfer_end(struct spi_device *spi)
@@ -1251,13 +1249,6 @@ static int tegra_qspi_probe(struct platform_device *pdev)
                return ret;
        }
 
-       tqspi->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL);
-       if (IS_ERR(tqspi->rst)) {
-               ret = PTR_ERR(tqspi->rst);
-               dev_err(&pdev->dev, "failed to get reset control: %d\n", ret);
-               return ret;
-       }
-
        tqspi->max_buf_size = QSPI_FIFO_DEPTH << 2;
        tqspi->dma_buf_size = DEFAULT_QSPI_DMA_BUF_LEN;
 
@@ -1279,9 +1270,8 @@ static int tegra_qspi_probe(struct platform_device *pdev)
                goto exit_pm_disable;
        }
 
-       reset_control_assert(tqspi->rst);
-       udelay(2);
-       reset_control_deassert(tqspi->rst);
+       if (device_reset(tqspi->dev) < 0)
+               dev_warn_once(tqspi->dev, "device reset failed\n");
 
        tqspi->def_command1_reg = QSPI_M_S | QSPI_CS_SW_HW |  QSPI_CS_SW_VAL;
        tegra_qspi_writel(tqspi, tqspi->def_command1_reg, QSPI_COMMAND1);