linux-kernel - [PATCH 4/5] mfd:rtsx: Clear hardware PFM mode in rtl8411b

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Message-ID: <5aa9033f6fc5539c992cc293a2e3e46aadebe62b.1373871138.git.wei_wang@realsil.com.cn>
Date:	Mon, 15 Jul 2013 14:56:13 +0800
From:	<wei_wang@...lsil.com.cn>
To:	<sameo@...ux.intel.com>
CC:	<devel@...uxdriverproject.org>, <linux-kernel@...r.kernel.org>,
	<gregkh@...uxfoundation.org>, <rogerable@...ltek.com>,
	<adam.lee@...onical.com>, Wei WANG <wei_wang@...lsil.com.cn>
Subject: [PATCH 4/5] mfd:rtsx: Clear hardware PFM mode in rtl8411b

From: Wei WANG <wei_wang@...lsil.com.cn>

Clear hw_pfm_en to disable hardware PFM mode, to fix a bug that in some
situation registers in 0xFDxx domain can't be accessed.

Signed-off-by: Wei WANG <wei_wang@...lsil.com.cn>
---
 drivers/mfd/rtl8411.c        |    2 ++
 include/linux/mfd/rtsx_pci.h |    1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c
index cd4cee8..dd3981a 100644
--- a/drivers/mfd/rtl8411.c
+++ b/drivers/mfd/rtl8411.c
@@ -110,6 +110,8 @@ static int rtl8411b_extra_init_hw(struct rtsx_pcr *pcr)
 			0xFF, pcr->sd30_drive_sel_3v3);
 	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
 			CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
+	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, FUNC_FORCE_CTL,
+			0x06, 0x00);
 
 	return rtsx_pci_send_cmd(pcr, 100);
 }
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index e070c30..c19044e 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -672,6 +672,7 @@
 #define PME_FORCE_CTL			0xFE56
 #define ASPM_FORCE_CTL			0xFE57
 #define PM_CLK_FORCE_CTL		0xFE58
+#define FUNC_FORCE_CTL			0xFE59
 #define PERST_GLITCH_WIDTH		0xFE5C
 #define CHANGE_LINK_STATE		0xFE5B
 #define RESET_LOAD_REG			0xFE5E
-- 
1.7.9.5

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