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Commit cd1b0b74 authored by Asutosh Das's avatar Asutosh Das
Browse files

ufs: ufshcd: Add check for broken auto-h8 support 



Add quirk for broken auto-hibern8 support.
It also retries to get the clock if clk_get fails.

Change-Id: I8862ebd31eb61b7cac6c88f66cbfe4f8255682cf
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent 42012669

drivers/scsi/ufs/ufshcd.c

+7 −2
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 *

 * This code is based on drivers/scsi/ufs/ufshcd.c

 * Copyright (C) 2011-2013 Samsung India Software Operations

 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.

 * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.

 *

 * Authors:

 *	Santosh Yaraganavi <santosh.sy@samsung.com>
@@ -3908,7 +3908,8 @@ static void ufshcd_auto_hibern8_enable(struct ufs_hba *hba) 
{

	unsigned long flags;



	if (!(hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) || !hba->ahit)

	if (!(hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) || !hba->ahit

	    || (hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8))

		return;



	spin_lock_irqsave(hba->host->host_lock, flags);
@@ -6741,6 +6742,10 @@ void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk) 
	unsigned long freq;



	freq = clk_get_rate(refclk);

	if (freq == 0) {

		dev_warn(hba->dev, " (%s) clk_get_rate - %d\n", __func__, freq);

		freq = clk_round_rate(refclk, 19200000);

	}



	hba->dev_ref_clk_freq =

		ufs_get_bref_clk_from_hz(freq);

drivers/scsi/ufs/ufshcd.h

+3 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 *

 * This code is based on drivers/scsi/ufs/ufshcd.h

 * Copyright (C) 2011-2013 Samsung India Software Operations

 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.

 * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.

 *

 * Authors:

 *	Santosh Yaraganavi <santosh.sy@samsung.com>
@@ -72,6 +72,8 @@ 
#define UFSHCD "ufshcd"

#define UFSHCD_DRIVER_VERSION "0.2"



#define UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8                0x40000



struct ufs_hba;



enum dev_cmd_type {