[RFC PATCH v1 13/19] rtw88: mac: Add support for SDIO specifics in the power on sequence

Martin Blumenstingl
2022-12-27T23:32:36Z

Add the code specific to SDIO HCI in the MAC power on sequence. This is
based on the RTL8822BS and RTL8822CS vendor drivers.

Co-developed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
drivers/net/wireless/realtek/rtw88/mac.c | 41 ++++++++++++++++++++++--
1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/mac.c b/drivers/net/wireless/realtek/rtw88/mac.c
index 8e1fa824b32b..ad71f9838d1d 100644
--- a/drivers/net/wireless/realtek/rtw88/mac.c
+++ b/drivers/net/wireless/realtek/rtw88/mac.c
@@ -7,6 +7,7 @@
#include "reg.h"
#include "fw.h"
#include "debug.h"
+#include "sdio.h"

void rtw_set_channel_mac(struct rtw_dev *rtwdev, u8 channel, u8 bw,
u8 primary_ch_idx)
@@ -60,6 +61,7 @@ EXPORT_SYMBOL(rtw_set_channel_mac);

static int rtw_mac_pre_system_cfg(struct rtw_dev *rtwdev)
{
+ unsigned int retry;
u32 value32;
u8 value8;

@@ -77,6 +79,26 @@ static int rtw_mac_pre_system_cfg(struct rtw_dev *rtwdev)
case RTW_HCI_TYPE_PCIE:
rtw_write32_set(rtwdev, REG_HCI_OPT_CTRL, BIT_USB_SUS_DIS);
break;
+ case RTW_HCI_TYPE_SDIO:
+ rtw_write8_clr(rtwdev, REG_SDIO_HSUS_CTRL, BIT(0));
+
+ for (retry = 0; retry < RTW_PWR_POLLING_CNT; retry++) {
+ if (rtw_read8(rtwdev, REG_SDIO_HSUS_CTRL) & BIT(1))
+ break;
+
+ usleep_range(10, 50);
+ }
+
+ if (retry == RTW_PWR_POLLING_CNT) {
+ rtw_err(rtwdev, "failed to poll REG_SDIO_HSUS_CTRL[1]");
+ return -ETIMEDOUT;
+ }
+
+ if (rtw_sdio_is_sdio30_supported(rtwdev))
+ rtw_write8_set(rtwdev, REG_HCI_OPT_CTRL + 2, BIT(2));
+ else
+ rtw_write8_clr(rtwdev, REG_HCI_OPT_CTRL + 2, BIT(2));
+ break;
case RTW_HCI_TYPE_USB:
break;
default:
@@ -248,6 +270,7 @@ static int rtw_mac_power_switch(struct rtw_dev *rtwdev, bool pwr_on)
{
const struct rtw_chip_info *chip = rtwdev->chip;
const struct rtw_pwr_seq_cmd **pwr_seq;
+ u32 imr;
u8 rpwm;
bool cur_pwr;

@@ -278,12 +301,19 @@ static int rtw_mac_power_switch(struct rtw_dev *rtwdev, bool pwr_on)
*/
rtw_hci_power_switch(rtwdev, false);

+ imr = rtw_read32(rtwdev, REG_SDIO_HIMR);
+ rtw_write32(rtwdev, REG_SDIO_HIMR, 0);
+
pwr_seq = pwr_on ? chip->pwr_on_seq : chip->pwr_off_seq;
- if (rtw_pwr_seq_parser(rtwdev, pwr_seq))
+ if (rtw_pwr_seq_parser(rtwdev, pwr_seq)) {
+ rtw_write32(rtwdev, REG_SDIO_HIMR, imr);
return -EINVAL;
+ }

rtw_hci_power_switch(rtwdev, pwr_on);

+ rtw_write32(rtwdev, REG_SDIO_HIMR, imr);
+
return 0;
}

@@ -450,6 +480,9 @@ static void download_firmware_reg_backup(struct rtw_dev *rtwdev,
rtw_write16(rtwdev, REG_FIFOPAGE_INFO_1, 0x200);
rtw_write32(rtwdev, REG_RQPN_CTRL_2, bckp[bckp_idx - 1].val);

+ if (rtw_hci_type(rtwdev) == RTW_HCI_TYPE_SDIO)
+ rtw_read32(rtwdev, REG_SDIO_FREE_TXPG);
+
/* Disable beacon related functions */
tmp = rtw_read8(rtwdev, REG_BCN_CTRL);
bckp[bckp_idx].len = 1;
@@ -1062,8 +1095,12 @@ static int txdma_queue_mapping(struct rtw_dev *rtwdev)
if (rtw_chip_wcpu_11ac(rtwdev))
rtw_write32(rtwdev, REG_H2CQ_CSR, BIT_H2CQ_FULL);

- if (rtw_hci_type(rtwdev) == RTW_HCI_TYPE_USB)
+ if (rtw_hci_type(rtwdev) == RTW_HCI_TYPE_SDIO) {
+ rtw_read32(rtwdev, REG_SDIO_FREE_TXPG);
+ rtw_write32(rtwdev, REG_SDIO_TX_CTRL, 0);
+ } else if (rtw_hci_type(rtwdev) == RTW_HCI_TYPE_USB) {
rtw_write8_set(rtwdev, REG_TXDMA_PQ_MAP, BIT_RXDMA_ARBBW_EN);
+ }

return 0;
}
--
2.39.0