misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG

aspm (Active State Power Management)
rtsx_comm_set_aspm: this function is for driver to make sure
not enter power saving when processing of init and card_detcct
ASPM_MODE_CFG: 8411 5209 5227 5229 5249 5250
Change back to use original way to control aspm
ASPM_MODE_REG: 5227A 524A 5250A 5260 5261 5228
Keep the new way to control aspm

Fixes: 121e9c6b5c4c ("misc: rtsx: modify and fix init_hw function")
Reported-by: Chris Chiu <chris.chiu@canonical.com>
Tested-by: Gordon Lack <gordon.lack@dsl.pipex.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20210607101634.4948-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/cardreader/rtl8411.c b/drivers/misc/cardreader/rtl8411.c
index a07674e..4c5621b 100644 (file)
--- a/drivers/misc/cardreader/rtl8411.c
+++ b/drivers/misc/cardreader/rtl8411.c
@@ -468,6 +468,7 @@ static void rtl8411_init_common_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_CFG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
        pcr->ic_version = rtl8411_get_ic_version(pcr);

diff --git a/drivers/misc/cardreader/rts5209.c b/drivers/misc/cardreader/rts5209.c
index 39a6a7e..29f5414 100644 (file)
--- a/drivers/misc/cardreader/rts5209.c
+++ b/drivers/misc/cardreader/rts5209.c
@@ -255,6 +255,7 @@ void rts5209_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_CFG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 16);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 

diff --git a/drivers/misc/cardreader/rts5227.c b/drivers/misc/cardreader/rts5227.c
index 8200af2..4bcfbc9 100644 (file)
--- a/drivers/misc/cardreader/rts5227.c
+++ b/drivers/misc/cardreader/rts5227.c
@@ -358,6 +358,7 @@ void rts5227_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_CFG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 7, 7);
 
@@ -483,6 +484,7 @@ void rts522a_init_params(struct rtsx_pcr *pcr)
 
        rts5227_init_params(pcr);
        pcr->ops = &rts522a_pcr_ops;
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(20, 20, 11);
        pcr->reg_pm_ctrl3 = RTS522A_PM_CTRL3;
 

diff --git a/drivers/misc/cardreader/rts5228.c b/drivers/misc/cardreader/rts5228.c
index 781a86d..ffc1282 100644 (file)
--- a/drivers/misc/cardreader/rts5228.c
+++ b/drivers/misc/cardreader/rts5228.c
@@ -718,6 +718,7 @@ void rts5228_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(28, 27, 11);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 

diff --git a/drivers/misc/cardreader/rts5229.c b/drivers/misc/cardreader/rts5229.c
index 89e6f12..c748eaf 100644 (file)
--- a/drivers/misc/cardreader/rts5229.c
+++ b/drivers/misc/cardreader/rts5229.c
@@ -246,6 +246,7 @@ void rts5229_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_CFG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 6, 6);
 

diff --git a/drivers/misc/cardreader/rts5249.c b/drivers/misc/cardreader/rts5249.c
index b2676e7..53f3a1f 100644 (file)
--- a/drivers/misc/cardreader/rts5249.c
+++ b/drivers/misc/cardreader/rts5249.c
@@ -566,6 +566,7 @@ void rts5249_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_CFG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(1, 29, 16);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 
@@ -729,6 +730,7 @@ static const struct pcr_ops rts524a_pcr_ops = {
 void rts524a_init_params(struct rtsx_pcr *pcr)
 {
        rts5249_init_params(pcr);
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 29, 11);
        pcr->option.ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF;
        pcr->option.ltr_l1off_snooze_sspwrgate =
@@ -845,6 +847,7 @@ static const struct pcr_ops rts525a_pcr_ops = {
 void rts525a_init_params(struct rtsx_pcr *pcr)
 {
        rts5249_init_params(pcr);
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(25, 29, 11);
        pcr->option.ltr_l1off_sspwrgate = LTR_L1OFF_SSPWRGATE_5250_DEF;
        pcr->option.ltr_l1off_snooze_sspwrgate =

diff --git a/drivers/misc/cardreader/rts5260.c b/drivers/misc/cardreader/rts5260.c
index 080a7d6..9b42b20 100644 (file)
--- a/drivers/misc/cardreader/rts5260.c
+++ b/drivers/misc/cardreader/rts5260.c
@@ -628,6 +628,7 @@ void rts5260_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
        pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 29, 11);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 

diff --git a/drivers/misc/cardreader/rts5261.c b/drivers/misc/cardreader/rts5261.c
index 6c64dad..1fd4e0e 100644 (file)
--- a/drivers/misc/cardreader/rts5261.c
+++ b/drivers/misc/cardreader/rts5261.c
@@ -783,6 +783,7 @@ void rts5261_init_params(struct rtsx_pcr *pcr)
        pcr->sd30_drive_sel_1v8 = 0x00;
        pcr->sd30_drive_sel_3v3 = 0x00;
        pcr->aspm_en = ASPM_L1_EN;
+       pcr->aspm_mode = ASPM_MODE_REG;
        pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 11);
        pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
 

diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c
index 2733111..baf8359 100644 (file)
--- a/drivers/misc/cardreader/rtsx_pcr.c
+++ b/drivers/misc/cardreader/rtsx_pcr.c
@@ -85,12 +85,18 @@ static void rtsx_comm_set_aspm(struct rtsx_pcr *pcr, bool enable)
        if (pcr->aspm_enabled == enable)
                return;
 
-       if (pcr->aspm_en & 0x02)
-               rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
-                       FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
-       else
-               rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
-                       FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
+       if (pcr->aspm_mode == ASPM_MODE_CFG) {
+               pcie_capability_clear_and_set_word(pcr->pci, PCI_EXP_LNKCTL,
+                                               PCI_EXP_LNKCTL_ASPMC,
+                                               enable ? pcr->aspm_en : 0);
+       } else if (pcr->aspm_mode == ASPM_MODE_REG) {
+               if (pcr->aspm_en & 0x02)
+                       rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
+                               FORCE_ASPM_CTL1, enable ? 0 : FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
+               else
+                       rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, FORCE_ASPM_CTL0 |
+                               FORCE_ASPM_CTL1, FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1);
+       }
 
        if (!enable && (pcr->aspm_en & 0x02))
                mdelay(10);
@@ -1394,7 +1400,8 @@ static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
                        return err;
        }
 
-       rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0x30, 0x30);
+       if (pcr->aspm_mode == ASPM_MODE_REG)
+               rtsx_pci_write_register(pcr, ASPM_FORCE_CTL, 0x30, 0x30);
 
        /* No CD interrupt if probing driver with card inserted.
         * So we need to initialize pcr->card_exist here.
@@ -1410,6 +1417,8 @@ static int rtsx_pci_init_hw(struct rtsx_pcr *pcr)
 static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
 {
        int err;
+       u16 cfg_val;
+       u8 val;
 
        spin_lock_init(&pcr->lock);
        mutex_init(&pcr->pcr_mutex);
@@ -1477,6 +1486,21 @@ static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
        if (!pcr->slots)
                return -ENOMEM;
 
+       if (pcr->aspm_mode == ASPM_MODE_CFG) {
+               pcie_capability_read_word(pcr->pci, PCI_EXP_LNKCTL, &cfg_val);
+               if (cfg_val & PCI_EXP_LNKCTL_ASPM_L1)
+                       pcr->aspm_enabled = true;
+               else
+                       pcr->aspm_enabled = false;
+
+       } else if (pcr->aspm_mode == ASPM_MODE_REG) {
+               rtsx_pci_read_register(pcr, ASPM_FORCE_CTL, &val);
+               if (val & FORCE_ASPM_CTL0 && val & FORCE_ASPM_CTL1)
+                       pcr->aspm_enabled = false;
+               else
+                       pcr->aspm_enabled = true;
+       }
+
        if (pcr->ops->fetch_vendor_settings)
                pcr->ops->fetch_vendor_settings(pcr);
 
@@ -1506,7 +1530,6 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
        struct pcr_handle *handle;
        u32 base, len;
        int ret, i, bar = 0;
-       u8 val;
 
        dev_dbg(&(pcidev->dev),
                ": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n",
@@ -1572,11 +1595,6 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
        pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr;
        pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
        pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
-       rtsx_pci_read_register(pcr, ASPM_FORCE_CTL, &val);
-       if (val & FORCE_ASPM_CTL0 && val & FORCE_ASPM_CTL1)
-               pcr->aspm_enabled = false;
-       else
-               pcr->aspm_enabled = true;
        pcr->card_inserted = 0;
        pcr->card_removed = 0;
        INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect);

diff --git a/include/linux/rtsx_pci.h b/include/linux/rtsx_pci.h
index 6f155f9..4ab7bfc 100644 (file)
--- a/include/linux/rtsx_pci.h
+++ b/include/linux/rtsx_pci.h
@@ -1109,6 +1109,7 @@ struct pcr_ops {
 };
 
 enum PDEV_STAT  {PDEV_STAT_IDLE, PDEV_STAT_RUN};
+enum ASPM_MODE  {ASPM_MODE_CFG, ASPM_MODE_REG};
 
 #define ASPM_L1_1_EN                   BIT(0)
 #define ASPM_L1_2_EN                   BIT(1)
@@ -1234,6 +1235,7 @@ struct rtsx_pcr {
        u8                              card_drive_sel;
 #define ASPM_L1_EN                     0x02
        u8                              aspm_en;
+       enum ASPM_MODE                  aspm_mode;
        bool                            aspm_enabled;
 
 #define PCR_MS_PMOS                    (1 << 0)