summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/ufs/ti-j721e-ufs.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/ufs/ti-j721e-ufs.c')
-rw-r--r--drivers/scsi/ufs/ti-j721e-ufs.c96
1 files changed, 0 insertions, 96 deletions
diff --git a/drivers/scsi/ufs/ti-j721e-ufs.c b/drivers/scsi/ufs/ti-j721e-ufs.c
deleted file mode 100644
index 122d650d0810..000000000000
--- a/drivers/scsi/ufs/ti-j721e-ufs.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-//
-// Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
-//
-
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_platform.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-
-#define TI_UFS_SS_CTRL 0x4
-#define TI_UFS_SS_RST_N_PCS BIT(0)
-#define TI_UFS_SS_CLK_26MHZ BIT(4)
-
-static int ti_j721e_ufs_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- unsigned long clk_rate;
- void __iomem *regbase;
- struct clk *clk;
- u32 reg = 0;
- int ret;
-
- regbase = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(regbase))
- return PTR_ERR(regbase);
-
- pm_runtime_enable(dev);
- ret = pm_runtime_resume_and_get(dev);
- if (ret < 0)
- goto disable_pm;
-
- /* Select MPHY refclk frequency */
- clk = devm_clk_get(dev, NULL);
- if (IS_ERR(clk)) {
- ret = PTR_ERR(clk);
- dev_err(dev, "Cannot claim MPHY clock.\n");
- goto clk_err;
- }
- clk_rate = clk_get_rate(clk);
- if (clk_rate == 26000000)
- reg |= TI_UFS_SS_CLK_26MHZ;
- devm_clk_put(dev, clk);
-
- /* Take UFS slave device out of reset */
- reg |= TI_UFS_SS_RST_N_PCS;
- writel(reg, regbase + TI_UFS_SS_CTRL);
-
- ret = of_platform_populate(pdev->dev.of_node, NULL, NULL,
- dev);
- if (ret) {
- dev_err(dev, "failed to populate child nodes %d\n", ret);
- goto clk_err;
- }
-
- return ret;
-
-clk_err:
- pm_runtime_put_sync(dev);
-disable_pm:
- pm_runtime_disable(dev);
- return ret;
-}
-
-static int ti_j721e_ufs_remove(struct platform_device *pdev)
-{
- of_platform_depopulate(&pdev->dev);
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
-
- return 0;
-}
-
-static const struct of_device_id ti_j721e_ufs_of_match[] = {
- {
- .compatible = "ti,j721e-ufs",
- },
- { },
-};
-
-static struct platform_driver ti_j721e_ufs_driver = {
- .probe = ti_j721e_ufs_probe,
- .remove = ti_j721e_ufs_remove,
- .driver = {
- .name = "ti-j721e-ufs",
- .of_match_table = ti_j721e_ufs_of_match,
- },
-};
-module_platform_driver(ti_j721e_ufs_driver);
-
-MODULE_AUTHOR("Vignesh Raghavendra <vigneshr@ti.com>");
-MODULE_DESCRIPTION("TI UFS host controller glue driver");
-MODULE_LICENSE("GPL v2");