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Subject[PATCH 7/8] misc: rtsx: Add hardware auto power off for RTS5261
Date
From: Rui Feng <rui_feng@realsil.com.cn>

This patch enable hardware auto power off when card is removed.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
---
drivers/misc/cardreader/rts5261.c | 9 +++++++++
include/linux/rtsx_pci.h | 3 +++
2 files changed, 12 insertions(+)

diff --git a/drivers/misc/cardreader/rts5261.c b/drivers/misc/cardreader/rts5261.c
index 0ef6b3e04a8d..2ada973a0f33 100644
--- a/drivers/misc/cardreader/rts5261.c
+++ b/drivers/misc/cardreader/rts5261.c
@@ -176,6 +176,8 @@ static int rts5261_card_power_on(struct rtsx_pcr *pcr, int card)
if (option->ocp_en)
rtsx_pci_enable_ocp(pcr);

+ rtsx_pci_write_register(pcr, REG_CRC_DUMMY_0,
+ CFG_SD_POW_AUTO_PD, CFG_SD_POW_AUTO_PD);

rtsx_pci_write_register(pcr, RTS5261_LDO1_CFG1,
RTS5261_LDO1_TUNE_MASK, RTS5261_LDO1_33);
@@ -303,6 +305,8 @@ static int rts5261_card_power_off(struct rtsx_pcr *pcr, int card)
err = rtsx_pci_write_register(pcr, RTS5261_LDO1233318_POW_CTL,
RTS5261_LDO_POWERON_MASK, 0);

+ rtsx_pci_write_register(pcr, REG_CRC_DUMMY_0,
+ CFG_SD_POW_AUTO_PD, 0);
if (pcr->option.ocp_en)
rtsx_pci_disable_ocp(pcr);

@@ -475,6 +479,7 @@ static void rts5261_init_from_cfg(struct rtsx_pcr *pcr)
static int rts5261_extra_init_hw(struct rtsx_pcr *pcr)
{
struct rtsx_cr_option *option = &pcr->option;
+ u32 val;

rtsx_pci_write_register(pcr, RTS5261_AUTOLOAD_CFG1,
CD_RESUME_EN_MASK, CD_RESUME_EN_MASK);
@@ -489,6 +494,10 @@ static int rts5261_extra_init_hw(struct rtsx_pcr *pcr)
AUX_CLK_ACTIVE_SEL_MASK, MAC_CKSW_DONE);
rtsx_pci_write_register(pcr, L1SUB_CONFIG3, 0xFF, 0);

+ if (is_version_higher_than(pcr, PID_5261, IC_VER_B)) {
+ val = rtsx_pci_readl(pcr, RTSX_DUM_REG);
+ rtsx_pci_writel(pcr, RTSX_DUM_REG, val | 0x1);
+ }
rtsx_pci_write_register(pcr, RTS5261_AUTOLOAD_CFG4,
RTS5261_AUX_CLK_16M_EN, 0);

diff --git a/include/linux/rtsx_pci.h b/include/linux/rtsx_pci.h
index db249e8707f3..fcaadc7c9df1 100644
--- a/include/linux/rtsx_pci.h
+++ b/include/linux/rtsx_pci.h
@@ -82,6 +82,7 @@
#define MS_OC_INT_EN (1 << 23)
#define SD_OC_INT_EN (1 << 22)

+#define RTSX_DUM_REG 0x1C

/*
* macros for easy use
@@ -1272,6 +1273,8 @@ struct rtsx_pcr {
#define PCI_PID(pcr) ((pcr)->pci->device)
#define is_version(pcr, pid, ver) \
(CHK_PCI_PID(pcr, pid) && (pcr)->ic_version == (ver))
+#define is_version_higher_than(pcr, pid, ver) \
+ (CHK_PCI_PID(pcr, pid) && (pcr)->ic_version > (ver))
#define pcr_dbg(pcr, fmt, arg...) \
dev_dbg(&(pcr)->pci->dev, fmt, ##arg)

--
2.17.1
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