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From a7c3d46915bce6d84e61e684e76564b034bdc1a9 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Mon, 27 Jun 2016 17:08:30 -0400
Subject: [PATCH] rtl8xxxu: First stab at rtl8188e_power_on()
Code based on code from Andrea Merello.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
.../net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 82 ++++++++++++++++++++++
1 file changed, 82 insertions(+)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
@@ -92,8 +92,90 @@ static int rtl8188eu_load_firmware(struc
return ret;
}
+static int rtl8188e_emu_to_active(struct rtl8xxxu_priv *priv)
+{
+ u8 val8;
+ u32 val32;
+ u16 val16;
+ int count, ret = 0;
+
+ /* wait till 0x04[17] = 1 power ready*/
+ for (count = RTL8XXXU_MAX_REG_POLL; count; count--) {
+ val32 = rtl8xxxu_read32(priv, REG_APS_FSMCO);
+ if (val32 & BIT(17))
+ break;
+
+ udelay(10);
+ }
+
+ if (!count) {
+ ret = -EBUSY;
+ goto exit;
+ }
+
+ /* reset baseband */
+ val8 = rtl8xxxu_read8(priv, REG_SYS_FUNC);
+ val8 &= ~(SYS_FUNC_BBRSTB | SYS_FUNC_BB_GLB_RSTN);
+ rtl8xxxu_write8(priv, REG_SYS_FUNC, val8);
+
+ /*0x24[23] = 2b'01 schmit trigger */
+ val32 = rtl8xxxu_read32(priv, REG_AFE_XTAL_CTRL);
+ val32 |= BIT(23);
+ rtl8xxxu_write32(priv, REG_AFE_XTAL_CTRL, val32);
+
+ /* 0x04[15] = 0 disable HWPDN (control by DRV)*/
+ val16 = rtl8xxxu_read16(priv, REG_APS_FSMCO);
+ val16 &= ~APS_FSMCO_HW_POWERDOWN;
+ rtl8xxxu_write16(priv, REG_APS_FSMCO, val16);
+
+ /*0x04[12:11] = 2b'00 disable WL suspend*/
+ val16 = rtl8xxxu_read16(priv, REG_APS_FSMCO);
+ val16 &= ~(APS_FSMCO_HW_SUSPEND | APS_FSMCO_PCIE);
+ rtl8xxxu_write16(priv, REG_APS_FSMCO, val16);
+
+ /* set, then poll until 0 */
+ val32 = rtl8xxxu_read32(priv, REG_APS_FSMCO);
+ val32 |= APS_FSMCO_MAC_ENABLE;
+ rtl8xxxu_write32(priv, REG_APS_FSMCO, val32);
+
+ for (count = RTL8XXXU_MAX_REG_POLL; count; count--) {
+ val32 = rtl8xxxu_read32(priv, REG_APS_FSMCO);
+ if ((val32 & APS_FSMCO_MAC_ENABLE) == 0) {
+ ret = 0;
+ break;
+ }
+ udelay(10);
+ }
+
+ if (!count) {
+ ret = -EBUSY;
+ goto exit;
+ }
+
+ /* LDO normal mode*/
+ val8 = rtl8xxxu_read8(priv, REG_LPLDO_CTRL);
+ val8 &= ~BIT(4);
+ rtl8xxxu_write8(priv, REG_LPLDO_CTRL, val8);
+
+exit:
+ return ret;
+}
+
+static int rtl8188eu_power_on(struct rtl8xxxu_priv *priv)
+{
+ int ret;
+
+ ret = rtl8188e_emu_to_active(priv);
+ if (ret)
+ goto exit;
+
+exit:
+ return ret;
+}
+
struct rtl8xxxu_fileops rtl8188eu_fops = {
.parse_efuse = rtl8188eu_parse_efuse,
.load_firmware = rtl8188eu_load_firmware,
+ .power_on = rtl8188eu_power_on,
.reset_8051 = rtl8xxxu_reset_8051,
};
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