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

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

Change-Id: I8862ebd31eb61b7cac6c88f66cbfe4f8255682cf
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
This commit is contained in:
Asutosh Das 2019-06-28 15:38:15 +05:30
commit cd1b0b7440
2 changed files with 10 additions and 3 deletions
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9
drivers/scsi/ufs/ufshcd.c
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@ -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);

4
drivers/scsi/ufs/ufshcd.h
View file

@ -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 {