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misc: rtsx: Add hardware auto power off for RTS5261

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

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397312-2991-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Rui Feng 2020-11-03 17:55:12 +08:00 committed by Ulf Hansson
parent 1da3c51512
commit 1672617d51
2 changed files with 12 additions and 0 deletions
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9
drivers/misc/cardreader/rts5261.c
View File

@ -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);

3
include/linux/rtsx_pci.h
View File

@ -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)