[PATCH] misc: rtsx: rts522a rts5228 rts5261 support Runtime PM

From: Ricky WU
Date: Mon Feb 21 2022 - 06:25:12 EST

rts522a, rts5228, rts5261
add extra init flow for rtd3
add more power_down setting for avoid being woken up
by plugging or unplugging card when system in S3

Signed-off-by: Ricky Wu <ricky_wu@xxxxxxxxxxx>
---
drivers/misc/cardreader/rts5227.c | 47 ++++++++++++++++++++++++++++++
drivers/misc/cardreader/rts5228.c | 21 +++++++++++--
drivers/misc/cardreader/rts5261.c | 33 +++++++++++++++++++--
drivers/misc/cardreader/rtsx_pcr.h | 2 ++
4 files changed, 98 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/cardreader/rts5227.c b/drivers/misc/cardreader/rts5227.c
index 4bcfbc9afbac..d676cf63a966 100644
--- a/drivers/misc/cardreader/rts5227.c
+++ b/drivers/misc/cardreader/rts5227.c
@@ -72,6 +72,8 @@ static void rts5227_fetch_vendor_settings(struct rtsx_pcr *pcr)

pci_read_config_dword(pdev, PCR_SETTING_REG2, &reg);
pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
+ if (CHK_PCI_PID(pcr, 0x522A))
+ pcr->rtd3_en = rtsx_reg_to_rtd3(reg);
if (rtsx_check_mmc_support(reg))
pcr->extra_caps |= EXTRA_CAPS_NO_MMC;
pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
@@ -171,6 +173,28 @@ static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
else
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0x30, 0x00);

+ if (CHK_PCI_PID(pcr, 0x522A))
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS522A_AUTOLOAD_CFG1,
+ CD_RESUME_EN_MASK, CD_RESUME_EN_MASK);
+
+ if (pcr->rtd3_en) {
+ if (CHK_PCI_PID(pcr, 0x522A)) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS522A_PM_CTRL3, 0x01, 0x01);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS522A_PME_FORCE_CTL, 0x30, 0x30);
+ } else {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x01, 0x01);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PME_FORCE_CTL, 0xFF, 0x33);
+ }
+ } else {
+ if (CHK_PCI_PID(pcr, 0x522A)) {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS522A_PM_CTRL3, 0x01, 0x00);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, RTS522A_PME_FORCE_CTL, 0x30, 0x20);
+ } else {
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PME_FORCE_CTL, 0xFF, 0x30);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x01, 0x00);
+ }
+ }
+
if (option->force_clkreq_0)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG,
FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_LOW);
@@ -438,6 +462,28 @@ static int rts522a_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
return rtsx_pci_send_cmd(pcr, 100);
}

+static void rts522a_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool runtime)
+{
+ /* Set relink_time to 0 */
+ rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, MASK_8_BIT_DEF, 0);
+ rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, MASK_8_BIT_DEF, 0);
+ rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3,
+ RELINK_TIME_MASK, 0);
+
+ rtsx_pci_write_register(pcr, RTS522A_PM_CTRL3,
+ D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);
+
+ if (!runtime) {
+ rtsx_pci_write_register(pcr, RTS522A_AUTOLOAD_CFG1,
+ CD_RESUME_EN_MASK, 0);
+ rtsx_pci_write_register(pcr, RTS522A_PM_CTRL3, 0x01, 0x00);
+ rtsx_pci_write_register(pcr, RTS522A_PME_FORCE_CTL, 0x30, 0x20);
+ }
+
+ rtsx_pci_write_register(pcr, FPDCTL, ALL_POWER_DOWN, ALL_POWER_DOWN);
+}
+
+
static void rts522a_set_l1off_cfg_sub_d0(struct rtsx_pcr *pcr, int active)
{
struct rtsx_cr_option *option = &pcr->option;
@@ -473,6 +519,7 @@ static const struct pcr_ops rts522a_pcr_ops = {
.card_power_on = rts5227_card_power_on,
.card_power_off = rts5227_card_power_off,
.switch_output_voltage = rts522a_switch_output_voltage,
+ .force_power_down = rts522a_force_power_down,
.cd_deglitch = NULL,
.conv_clk_and_div_n = NULL,
.set_l1off_cfg_sub_d0 = rts522a_set_l1off_cfg_sub_d0,
diff --git a/drivers/misc/cardreader/rts5228.c b/drivers/misc/cardreader/rts5228.c
index ffe3afbf8bfe..af581f4f74d1 100644
--- a/drivers/misc/cardreader/rts5228.c
+++ b/drivers/misc/cardreader/rts5228.c
@@ -102,6 +102,14 @@ static void rts5228_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool run
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);

+ if (!runtime) {
+ rtsx_pci_write_register(pcr, RTS5228_AUTOLOAD_CFG1,
+ CD_RESUME_EN_MASK, 0);
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+ rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+ }
+
rtsx_pci_write_register(pcr, FPDCTL,
SSC_POWER_DOWN, SSC_POWER_DOWN);
}
@@ -480,9 +488,18 @@ static int rts5228_extra_init_hw(struct rtsx_pcr *pcr)
FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH);

rtsx_pci_write_register(pcr, PWD_SUSPEND_EN, 0xFF, 0xFB);
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x00);
+
+ if (pcr->rtd3_en) {
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x01);
rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
- FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+ FORCE_PM_CONTROL | FORCE_PM_VALUE,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE);
+ } else {
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+ rtsx_pci_write_register(pcr, RTS5228_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+ }
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, D3_DELINK_MODE_EN, 0x00);

return 0;
}
diff --git a/drivers/misc/cardreader/rts5261.c b/drivers/misc/cardreader/rts5261.c
index 64333347c14a..a77585ab0f30 100644
--- a/drivers/misc/cardreader/rts5261.c
+++ b/drivers/misc/cardreader/rts5261.c
@@ -103,6 +103,24 @@ static void rts5261_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool run
rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3,
D3_DELINK_MODE_EN, D3_DELINK_MODE_EN);

+ if (!runtime) {
+ rtsx_pci_write_register(pcr, RTS5261_AUTOLOAD_CFG1,
+ CD_RESUME_EN_MASK, 0);
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+ rtsx_pci_write_register(pcr, RTS5261_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+
+ } else {
+ rtsx_pci_write_register(pcr, RTS5261_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE, 0);
+
+ rtsx_pci_write_register(pcr, RTS5261_FW_CTL,
+ RTS5261_INFORM_RTD3_COLD, RTS5261_INFORM_RTD3_COLD);
+ rtsx_pci_write_register(pcr, RTS5261_AUTOLOAD_CFG4,
+ RTS5261_FORCE_PRSNT_LOW, RTS5261_FORCE_PRSNT_LOW);
+
+ }
+
rtsx_pci_write_register(pcr, RTS5261_REG_FPDCTL,
SSC_POWER_DOWN, SSC_POWER_DOWN);
}
@@ -536,9 +554,18 @@ static int rts5261_extra_init_hw(struct rtsx_pcr *pcr)
FORCE_CLKREQ_DELINK_MASK, FORCE_CLKREQ_HIGH);

rtsx_pci_write_register(pcr, PWD_SUSPEND_EN, 0xFF, 0xFB);
- rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x10, 0x00);
- rtsx_pci_write_register(pcr, RTS5261_REG_PME_FORCE_CTL,
- FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+
+ if (pcr->rtd3_en) {
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x01);
+ rtsx_pci_write_register(pcr, RTS5261_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE);
+ } else {
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, 0x01, 0x00);
+ rtsx_pci_write_register(pcr, RTS5261_REG_PME_FORCE_CTL,
+ FORCE_PM_CONTROL | FORCE_PM_VALUE, FORCE_PM_CONTROL);
+ }
+ rtsx_pci_write_register(pcr, pcr->reg_pm_ctrl3, D3_DELINK_MODE_EN, 0x00);

/* Clear Enter RTD3_cold Information*/
rtsx_pci_write_register(pcr, RTS5261_FW_CTL,
diff --git a/drivers/misc/cardreader/rtsx_pcr.h b/drivers/misc/cardreader/rtsx_pcr.h
index aa0ebd667227..37d1f316ae17 100644
--- a/drivers/misc/cardreader/rtsx_pcr.h
+++ b/drivers/misc/cardreader/rtsx_pcr.h
@@ -15,6 +15,8 @@
#define MIN_DIV_N_PCR 80
#define MAX_DIV_N_PCR 208

+#define RTS522A_PME_FORCE_CTL 0xFF78
+#define RTS522A_AUTOLOAD_CFG1 0xFF7C
#define RTS522A_PM_CTRL3 0xFF7E

#define RTS524A_PME_FORCE_CTL 0xFF78
--
2.25.1