diff options
Diffstat (limited to 'drivers/scsi/ufs/ti-j721e-ufs.c')
-rw-r--r-- | drivers/scsi/ufs/ti-j721e-ufs.c | 96 |
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"); |