RE: [PATCH v2 4/7] scsi: ufs-renesas: Add support for Renesas R-Car UFS controller

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Hi Alim,

Thank you for your review!

> From: Alim Akhtar, Sent: Thursday, April 14, 2022 1:59 PM
> 
> Hi Yoshihiro
> 
> >-----Original Message-----
> >From: Yoshihiro Shimoda [mailto:yoshihiro.shimoda.uh@xxxxxxxxxxx]
> >Sent: Thursday, April 14, 2022 8:01 AM
> >
> >Add support for Renesas R-Car UFS controller which needs vender specific
> >initialization.
> >
> >Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> >---
> > drivers/scsi/ufs/Kconfig       |  12 +
> > drivers/scsi/ufs/Makefile      |   1 +
> > drivers/scsi/ufs/ufs-renesas.c | 418
> >+++++++++++++++++++++++++++++++++
> > 3 files changed, 431 insertions(+)
> > create mode 100644 drivers/scsi/ufs/ufs-renesas.c
> >
> >diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig index
> >9fe27b01904e..7e7ec1b26537 100644
> >--- a/drivers/scsi/ufs/Kconfig
> >+++ b/drivers/scsi/ufs/Kconfig
> >@@ -136,6 +136,18 @@ config SCSI_UFS_HISI
> > 	  Select this if you have UFS controller on Hisilicon chipset.
> > 	  If unsure, say N.
> >
> >+config SCSI_UFS_RENESAS
> >+	tristate "Renesas specific hooks to UFS controller platform driver"
> >+	depends on (ARCH_RENESAS || COMPILE_TEST) &&
> >SCSI_UFSHCD_PLATFORM
> >+	help
> >+	  This selects the Renesas specific additions to UFSHCD platform
> driver.
> >+	  UFS host on Renesas needs some vendor specific configuration
> >before
> >+	  accessing the hardware.
> >+
> >+	  Select this if you have UFS controller on Renesas chipset.
> >+
> >+	  If unsure, say N.
> >+
> > config SCSI_UFS_TI_J721E
> > 	tristate "TI glue layer for Cadence UFS Controller"
> > 	depends on OF && HAS_IOMEM && (ARCH_K3 || COMPILE_TEST) diff
> >--git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile index
> >966048875b50..b7e4a739ea44 100644
> >--- a/drivers/scsi/ufs/Makefile
> >+++ b/drivers/scsi/ufs/Makefile
> >@@ -23,4 +23,5 @@ obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o
> > obj-$(CONFIG_SCSI_UFSHCD_PLATFORM) += ufshcd-pltfrm.o
> > obj-$(CONFIG_SCSI_UFS_HISI) += ufs-hisi.o
> > obj-$(CONFIG_SCSI_UFS_MEDIATEK) += ufs-mediatek.o
> >+obj-$(CONFIG_SCSI_UFS_RENESAS) += ufs-renesas.o
> > obj-$(CONFIG_SCSI_UFS_TI_J721E) += ti-j721e-ufs.o diff --git
> >a/drivers/scsi/ufs/ufs-renesas.c b/drivers/scsi/ufs/ufs-renesas.c new file
> >mode 100644 index 000000000000..5fb2484ead64
> >--- /dev/null
> >+++ b/drivers/scsi/ufs/ufs-renesas.c
> >@@ -0,0 +1,418 @@
> >+// SPDX-License-Identifier: GPL-2.0 OR MIT
> >+/*
> >+ * Renesas UFS host controller driver
> >+ *
> >+ * Copyright (C) 2022 Renesas Electronics Corporation  */
> >+
> >+#include <linux/clk.h>
> >+#include <linux/delay.h>
> >+#include <linux/err.h>
> >+#include <linux/iopoll.h>
> >+#include <linux/kernel.h>
> >+#include <linux/module.h>
> >+#include <linux/of.h>
> >+#include <linux/of_device.h>
> >+#include <linux/pm_runtime.h>
> >+
> >+#include "ufshcd.h"
> >+#include "ufshcd-pltfrm.h"
> >+
> >+struct ufs_renesas_priv {
> >+	bool initialized;	/* The hardware needs initialization once */
> >+};
> >+
> >+enum {
> >+	SET_PHY_INDEX_LO = 0,
> >+	SET_PHY_INDEX_HI,
> >+	TIMER_INDEX,
> >+	MAX_INDEX
> >+};
> >+
> >+enum ufs_renesas_init_param_mode {
> >+	MODE_RESTORE,
> >+	MODE_SET,
> >+	MODE_SAVE,
> >+	MODE_POLL,
> >+	MODE_WAIT,
> >+	MODE_WRITE,
> >+};
> >+
> >+#define PARAM_RESTORE(_reg, _index) \
> >+		{ .mode = MODE_RESTORE, .reg = _reg, .index = _index }
> >#define
> >+PARAM_SET(_index, _set) \
> >+		{ .mode = MODE_SET, .index = _index, .u.set = _set } #define
> >+PARAM_SAVE(_reg, _mask, _index) \
> >+		{ .mode = MODE_SAVE, .reg = _reg, .mask = (u32)(_mask), \
> >+		  .index = _index }
> >+#define PARAM_POLL(_reg, _expected, _mask) \
> >+		{ .mode = MODE_POLL, .reg = _reg, .u.expected = _expected,
> >\
> >+		  .mask = (u32)(_mask) }
> >+#define PARAM_WAIT(_delay_us) \
> >+		{ .mode = MODE_WAIT, .u.delay_us = _delay_us }
> >+
> >+#define PARAM_WRITE(_reg, _val) \
> >+		{ .mode = MODE_WRITE, .reg = _reg, .u.val = _val }
> >+
> >+#define PARAM_WRITE_D0_D4(_d0, _d4) \
> >+		PARAM_WRITE(0xd0, _d0),	PARAM_WRITE(0xd4, _d4)
> >+
> >+#define PARAM_WRITE_800_80C_POLL(_addr, _data_800)		\
> >+		PARAM_WRITE_D0_D4(0x0000080c, 0x00000100),	\
> >+		PARAM_WRITE_D0_D4(0x00000800, ((_data_800) << 16) |
> >BIT(8) | (_addr)), \
> >+		PARAM_WRITE(0xd0, 0x0000080c),			\
> >+		PARAM_POLL(0xd4, BIT(8), BIT(8))
> >+
> >+#define PARAM_RESTORE_800_80C_POLL(_index)			\
> >+		PARAM_WRITE_D0_D4(0x0000080c, 0x00000100),	\
> >+		PARAM_WRITE(0xd0, 0x00000800),			\
> >+		PARAM_RESTORE(0xd4, _index),			\
> >+		PARAM_WRITE(0xd0, 0x0000080c),			\
> >+		PARAM_POLL(0xd4, BIT(8), BIT(8))
> >+
> >+#define PARAM_WRITE_804_80C_POLL(_addr, _data_804)		\
> >+		PARAM_WRITE_D0_D4(0x0000080c, 0x00000100),	\
> >+		PARAM_WRITE_D0_D4(0x00000804, ((_data_804) << 16) |
> >BIT(8) | (_addr)), \
> >+		PARAM_WRITE(0xd0, 0x0000080c),			\
> >+		PARAM_POLL(0xd4, BIT(8), BIT(8))
> >+
> >+#define PARAM_WRITE_828_82C_POLL(_data_828)			\
> >+		PARAM_WRITE_D0_D4(0x0000082c, 0x0f000000),	\
> >+		PARAM_WRITE_D0_D4(0x00000828, _data_828),	\
> >+		PARAM_WRITE(0xd0, 0x0000082c),			\
> >+		PARAM_POLL(0xd4, _data_828, _data_828)
> >+
> >+#define PARAM_WRITE_PHY(_addr16, _data16)			\
> >+		PARAM_WRITE(0xf0, 1),				\
> >+		PARAM_WRITE_800_80C_POLL(0x16, (_addr16) & 0xff), \
> >+		PARAM_WRITE_800_80C_POLL(0x17, ((_addr16) >> 8) & 0xff),
> >\
> >+		PARAM_WRITE_800_80C_POLL(0x18, (_data16) & 0xff), \
> >+		PARAM_WRITE_800_80C_POLL(0x19, ((_data16) >> 8) & 0xff),
> >\
> >+		PARAM_WRITE_800_80C_POLL(0x1c, 0x01),		\
> >+		PARAM_WRITE_828_82C_POLL(0x0f000000),		\
> >+		PARAM_WRITE(0xf0, 0)
> >+
> >+#define PARAM_SET_PHY(_addr16, _data16)				\
> >+		PARAM_WRITE(0xf0, 1),				\
> >+		PARAM_WRITE_800_80C_POLL(0x16, (_addr16) & 0xff), \
> >+		PARAM_WRITE_800_80C_POLL(0x17, ((_addr16) >> 8) & 0xff),
> >\
> >+		PARAM_WRITE_800_80C_POLL(0x1c, 0x01),		\
> >+		PARAM_WRITE_828_82C_POLL(0x0f000000),		\
> >+		PARAM_WRITE_804_80C_POLL(0x1a, 0),		\
> >+		PARAM_WRITE(0xd0, 0x00000808),			\
> >+		PARAM_SAVE(0xd4, 0xff, SET_PHY_INDEX_LO),	\
> >+		PARAM_WRITE_804_80C_POLL(0x1b, 0),		\
> >+		PARAM_WRITE(0xd0, 0x00000808),			\
> >+		PARAM_SAVE(0xd4, 0xff, SET_PHY_INDEX_HI),	\
> >+		PARAM_WRITE_828_82C_POLL(0x0f000000),		\
> >+		PARAM_WRITE(0xf0, 0),				\
> >+		PARAM_WRITE(0xf0, 1),				\
> >+		PARAM_WRITE_800_80C_POLL(0x16, (_addr16) & 0xff), \
> >+		PARAM_WRITE_800_80C_POLL(0x17, ((_addr16) >> 8) & 0xff),
> >\
> >+		PARAM_SET(SET_PHY_INDEX_LO, ((_data16 & 0xff) << 16) |
> >BIT(8) | 0x18), \
> >+		PARAM_RESTORE_800_80C_POLL(SET_PHY_INDEX_LO),
> >	\
> >+		PARAM_SET(SET_PHY_INDEX_HI, (((_data16 >> 8) & 0xff) <<
> >16) | BIT(8) | 0x19), \
> >+		PARAM_RESTORE_800_80C_POLL(SET_PHY_INDEX_HI),
> >	\
> >+		PARAM_WRITE_800_80C_POLL(0x1c, 0x01),		\
> >+		PARAM_WRITE_828_82C_POLL(0x0f000000),		\
> >+		PARAM_WRITE(0xf0, 0)
> >+
> >+#define PARAM_INDIRECT_WRITE(_gpio, _addr, _data_800)		\
> >+		PARAM_WRITE(0xf0, _gpio),			\
> >+		PARAM_WRITE_800_80C_POLL(_addr, _data_800),	\
> >+		PARAM_WRITE_828_82C_POLL(0x0f000000),		\
> >+		PARAM_WRITE(0xf0, 0)
> >+
> >+#define PARAM_INDIRECT_POLL(_gpio, _addr, _expected, _mask)	\
> >+		PARAM_WRITE(0xf0, _gpio),			\
> >+		PARAM_WRITE_800_80C_POLL(_addr, 0),		\
> >+		PARAM_WRITE(0xd0, 0x00000808),			\
> >+		PARAM_POLL(0xd4, _expected, _mask),		\
> >+		PARAM_WRITE(0xf0, 0)
> >+
> 
> These above macro gives lot of checkpatch error, please fix the same.

The error is:
ERROR: Macros with complex values should be enclosed in parentheses

In general, we should fix a checkpatch error. However, these macros
can add multiple entries of struct ufs_renesas_init_param by a line.
In other words, we cannot add parentheses for it because build error
happens. If these macros are not acceptable, I need to write a lot
of lines to the entries instead and I think it will be less readability.

> >+struct ufs_renesas_init_param {
> >+	enum ufs_renesas_init_param_mode mode;
> >+	u32 reg;
> >+	union {
> >+		u32 expected;
> >+		u32 delay_us;
> >+		u32 set;
> >+		u32 val;
> >+	} u;
> >+	u32 mask;
> >+	u32 index;
> >+};
> >+
> >+/* This setting is for SERIES B */
> >+static const struct ufs_renesas_init_param ufs_param[] = {
> >+	PARAM_WRITE(0xc0, 0x49425308),
> >+	PARAM_WRITE_D0_D4(0x00000104, 0x00000002),
> >+	PARAM_WAIT(1),
> >+	PARAM_WRITE_D0_D4(0x00000828, 0x00000200),
> >+	PARAM_WAIT(1),
> >+	PARAM_WRITE_D0_D4(0x00000828, 0x00000000),
> >+	PARAM_WRITE_D0_D4(0x00000104, 0x00000001),
> >+	PARAM_WRITE_D0_D4(0x00000940, 0x00000001),
> >+	PARAM_WAIT(1),
> >+	PARAM_WRITE_D0_D4(0x00000940, 0x00000000),
> >+
> >+	PARAM_WRITE(0xc0, 0x49425308),
> >+	PARAM_WRITE(0xc0, 0x41584901),
> >+
> >+	PARAM_WRITE_D0_D4(0x0000080c, 0x00000100),
> >+	PARAM_WRITE_D0_D4(0x00000804, 0x00000000),
> >+	PARAM_WRITE(0xd0, 0x0000080c),
> >+	PARAM_POLL(0xd4, BIT(8), BIT(8)),
> >+
> >+	PARAM_WRITE(REG_CONTROLLER_ENABLE, 0x00000001),
> >+
> >+	PARAM_WRITE(0xd0, 0x00000804),
> >+	PARAM_POLL(0xd4, BIT(8) | BIT(6) | BIT(0), BIT(8) | BIT(6) |
> BIT(0)),
> >+
> >+	PARAM_WRITE(0xd0, 0x00000d00),
> >+	PARAM_SAVE(0xd4, 0x0000ffff, TIMER_INDEX),
> >+	PARAM_WRITE(0xd4, 0x00000000),
> >+	PARAM_WRITE_D0_D4(0x0000082c, 0x0f000000),
> >+	PARAM_WRITE_D0_D4(0x00000828, 0x08000000),
> >+	PARAM_WRITE(0xd0, 0x0000082c),
> >+	PARAM_POLL(0xd4, BIT(27), BIT(27)),
> >+	PARAM_WRITE(0xd0, 0x00000d2c),
> >+	PARAM_POLL(0xd4, BIT(0), BIT(0)),
> >+
> >+	/* phy setup */
> >+	PARAM_INDIRECT_WRITE(1, 0x01, 0x001f),
> >+	PARAM_INDIRECT_WRITE(7, 0x5d, 0x0014),
> >+	PARAM_INDIRECT_WRITE(7, 0x5e, 0x0014),
> >+	PARAM_INDIRECT_WRITE(7, 0x0d, 0x0003),
> >+	PARAM_INDIRECT_WRITE(7, 0x0e, 0x0007),
> >+	PARAM_INDIRECT_WRITE(7, 0x5f, 0x0003),
> >+	PARAM_INDIRECT_WRITE(7, 0x60, 0x0003),
> >+	PARAM_INDIRECT_WRITE(7, 0x5b, 0x00a6),
> >+	PARAM_INDIRECT_WRITE(7, 0x5c, 0x0003),
> >+
> >+	PARAM_INDIRECT_POLL(7, 0x3c, 0, BIT(7)),
> >+	PARAM_INDIRECT_POLL(7, 0x4c, 0, BIT(4)),
> >+
> >+	PARAM_INDIRECT_WRITE(1, 0x32, 0x0080),
> >+	PARAM_INDIRECT_WRITE(1, 0x1f, 0x0001),
> >+	PARAM_INDIRECT_WRITE(0, 0x2c, 0x0001),
> >+	PARAM_INDIRECT_WRITE(0, 0x32, 0x0087),
> >+
> >+	PARAM_INDIRECT_WRITE(1, 0x4d, 0x0061),
> >+	PARAM_INDIRECT_WRITE(4, 0x9b, 0x0009),
> >+	PARAM_INDIRECT_WRITE(4, 0xa6, 0x0005),
> >+	PARAM_INDIRECT_WRITE(4, 0xa5, 0x0058),
> >+	PARAM_INDIRECT_WRITE(1, 0x39, 0x0027),
> >+	PARAM_INDIRECT_WRITE(1, 0x47, 0x004c),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x0d, 0x0002),
> >+	PARAM_INDIRECT_WRITE(7, 0x0e, 0x0007),
> >+
> >+	PARAM_WRITE_PHY(0x0028, 0x0061),
> >+	PARAM_WRITE_PHY(0x4014, 0x0061),
> >+	PARAM_SET_PHY(0x401c, BIT(2)),
> >+	PARAM_WRITE_PHY(0x4000, 0x0000),
> >+	PARAM_WRITE_PHY(0x4001, 0x0000),
> >+
> >+	PARAM_WRITE_PHY(0x10ae, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ad, 0x0000),
> >+	PARAM_WRITE_PHY(0x10af, 0x0001),
> >+	PARAM_WRITE_PHY(0x10b6, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ae, 0x0000),
> >+
> >+	PARAM_WRITE_PHY(0x10ae, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ad, 0x0000),
> >+	PARAM_WRITE_PHY(0x10af, 0x0002),
> >+	PARAM_WRITE_PHY(0x10b6, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ae, 0x0000),
> >+
> >+	PARAM_WRITE_PHY(0x10ae, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ad, 0x0080),
> >+	PARAM_WRITE_PHY(0x10af, 0x0000),
> >+	PARAM_WRITE_PHY(0x10b6, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ae, 0x0000),
> >+
> >+	PARAM_WRITE_PHY(0x10ae, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ad, 0x0080),
> >+	PARAM_WRITE_PHY(0x10af, 0x001a),
> >+	PARAM_WRITE_PHY(0x10b6, 0x0001),
> >+	PARAM_WRITE_PHY(0x10ae, 0x0000),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x70, 0x0016),
> >+	PARAM_INDIRECT_WRITE(7, 0x71, 0x0016),
> >+	PARAM_INDIRECT_WRITE(7, 0x72, 0x0014),
> >+	PARAM_INDIRECT_WRITE(7, 0x73, 0x0014),
> >+	PARAM_INDIRECT_WRITE(7, 0x74, 0x0000),
> >+	PARAM_INDIRECT_WRITE(7, 0x75, 0x0000),
> >+	PARAM_INDIRECT_WRITE(7, 0x76, 0x0010),
> >+	PARAM_INDIRECT_WRITE(7, 0x77, 0x0010),
> >+	PARAM_INDIRECT_WRITE(7, 0x78, 0x00ff),
> >+	PARAM_INDIRECT_WRITE(7, 0x79, 0x0000),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x19, 0x0007),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x1a, 0x0007),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x24, 0x000c),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x25, 0x000c),
> >+
> >+	PARAM_INDIRECT_WRITE(7, 0x62, 0x0000),
> >+	PARAM_INDIRECT_WRITE(7, 0x63, 0x0000),
> >+	PARAM_INDIRECT_WRITE(7, 0x5d, 0x0014),
> >+	PARAM_INDIRECT_WRITE(7, 0x5e, 0x0017),
> >+	PARAM_INDIRECT_WRITE(7, 0x5d, 0x0004),
> >+	PARAM_INDIRECT_WRITE(7, 0x5e, 0x0017),
> >+	PARAM_INDIRECT_POLL(7, 0x55, 0, BIT(6)),
> >+	PARAM_INDIRECT_POLL(7, 0x41, 0, BIT(7)),
> >+	/* end of phy setup */
> >+
> >+	PARAM_WRITE(0xf0, 0),
> >+	PARAM_WRITE(0xd0, 0x00000d00),
> >+	PARAM_RESTORE(0xd4, TIMER_INDEX),
> >+};
> >+
> >+static void ufs_renesas_dbg_register_dump(struct ufs_hba *hba) {
> >+	ufshcd_dump_regs(hba, 0xc0, 0x40, "regs: 0xc0 + "); }
> >+
> >+static void ufs_renesas_reg_control(struct ufs_hba *hba,
> >+				    const struct ufs_renesas_init_param *p)
> {
> >+	static u32 save[MAX_INDEX];
> >+	int ret;
> >+	u32 val;
> >+
> >+	pr_debug("%s: %d %04x %08x, %08x, %d\n", __func__, p->mode, p-
> >>reg,
> >+		 p->u.val, p->mask, p->index);
> >+
> >+	BUG_ON(p->index >= MAX_INDEX);
> 
> Do you really need a BUG_ON here? May be a WARN_ON?

WARN_ON() is OK to me. So, I'll fix it.

Best regards,
Yoshihiro Shimoda

> >+
> >+	switch (p->mode) {
> >+	case MODE_RESTORE:
> >+		ufshcd_writel(hba, save[p->index], p->reg);
> >+		break;
> >+	case MODE_SET:
> >+		pr_debug("%s: %d %x %x\n", __func__, p->index, save[p-
> >>index],
> >+			 p->u.set);
> >+		save[p->index] |= p->u.set;
> >+		break;
> >+	case MODE_SAVE:
> >+		save[p->index] = ufshcd_readl(hba, p->reg) & p->mask;
> >+		pr_debug("%s: index = %d, val = %08x\n", __func__,
> >+			 p->index, val);
> >+		break;
> >+	case MODE_POLL:
> >+		ret = readl_poll_timeout_atomic(hba->mmio_base + p->reg,
> >+						val,
> >+						(val & p->mask) == p-
> >>u.expected,
> >+						10, 1000);
> >+		if (ret)
> >+			pr_err("%s: poll failed %d (%08x, %08x, %08x)\n",
> >+			       __func__, ret, val, p->mask, p->u.expected);
> >+		break;
> >+	case MODE_WAIT:
> >+		if (p->u.delay_us > 1000)
> >+			mdelay(p->u.delay_us / 1000);
> >+		else
> >+			udelay(p->u.delay_us);
> >+		break;
> >+	case MODE_WRITE:
> >+		ufshcd_writel(hba, p->u.val, p->reg);
> >+		break;
> >+	default:
> >+		break;
> >+	}
> >+}
> >+
> >+static void ufs_renesas_pre_init(struct ufs_hba *hba) {
> >+	const struct ufs_renesas_init_param *p = ufs_param;
> >+	int i;
> >+
> >+	for (i = 0; i < ARRAY_SIZE(ufs_param); i++)
> >+		ufs_renesas_reg_control(hba, &p[i]);
> >+}
> >+
> >+static int ufs_renesas_hce_enable_notify(struct ufs_hba *hba,
> >+					 enum ufs_notify_change_status
> >status) {
> >+	struct ufs_renesas_priv *priv = ufshcd_get_variant(hba);
> >+
> >+	if (priv->initialized)
> >+		return 0;
> >+
> >+	if (status == PRE_CHANGE)
> >+		ufs_renesas_pre_init(hba);
> >+
> >+	priv->initialized = true;
> >+
> >+	return 0;
> >+}
> >+
> >+static int ufs_renesas_setup_clocks(struct ufs_hba *hba, bool on,
> >+				    enum ufs_notify_change_status status) {
> >+	if (on && status == PRE_CHANGE)
> >+		pm_runtime_get_sync(hba->dev);
> >+	else if (!on && status == POST_CHANGE)
> >+		pm_runtime_put(hba->dev);
> >+
> >+	return 0;
> >+}
> >+
> >+static int ufs_renesas_init(struct ufs_hba *hba) {
> >+	struct ufs_renesas_priv *priv;
> >+
> >+	priv = devm_kmalloc(hba->dev, sizeof(*priv), GFP_KERNEL);
> >+	if (!priv)
> >+		return -ENOMEM;
> >+	ufshcd_set_variant(hba, priv);
> >+
> >+	hba->quirks |= UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS |
> >+UFSHCD_QUIRK_HIBERN_FASTAUTO;
> >+
> >+	return 0;
> >+}
> >+
> >+static const struct ufs_hba_variant_ops ufs_renesas_vops = {
> >+	.name		= "renesas",
> >+	.init		= ufs_renesas_init,
> >+	.setup_clocks	= ufs_renesas_setup_clocks,
> >+	.hce_enable_notify = ufs_renesas_hce_enable_notify,
> >+	.dbg_register_dump = ufs_renesas_dbg_register_dump, };
> >+
> >+static const struct of_device_id __maybe_unused ufs_renesas_of_match[]
> >= {
> >+	{ .compatible = "renesas,r8a779f0-ufs" }, };
> >MODULE_DEVICE_TABLE(of,
> >+ufs_renesas_of_match);
> >+
> >+static int ufs_renesas_probe(struct platform_device *pdev) {
> >+	return ufshcd_pltfrm_init(pdev, &ufs_renesas_vops); }
> >+
> >+static int ufs_renesas_remove(struct platform_device *pdev) {
> >+	struct ufs_hba *hba = platform_get_drvdata(pdev);
> >+
> >+	ufshcd_remove(hba);
> >+
> >+	return 0;
> >+}
> >+
> >+static struct platform_driver ufs_renesas_platform = {
> >+	.probe	= ufs_renesas_probe,
> >+	.remove	= ufs_renesas_remove,
> >+	.driver	= {
> >+		.name	= "ufshcd-renesas",
> >+		.of_match_table	=
> >of_match_ptr(ufs_renesas_of_match),
> >+	},
> >+};
> >+module_platform_driver(ufs_renesas_platform);
> >+
> >+MODULE_AUTHOR("Yoshihiro Shimoda
> ><yoshihiro.shimoda.uh@xxxxxxxxxxx>");
> >+MODULE_DESCRIPTION("Renesas UFS host controller driver");
> >+MODULE_LICENSE("Dual MIT/GPL");
> >--
> >2.25.1
> 





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