mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
ef17edae3d
Refreshed all patches. Compile-tested on: cns3xxx, imx6 Runtime-tested on: cns3xxx, imx6 Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
266 lines
8.0 KiB
Diff
266 lines
8.0 KiB
Diff
From e6fe50ef22071fe87ce48f79ab4fe21cbec2081b Mon Sep 17 00:00:00 2001
|
|
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
|
|
Date: Wed, 3 Jan 2018 16:53:20 +0800
|
|
Subject: [PATCH 190/224] usb: xhci-mtk: supports remote wakeup for mt2712 with
|
|
two xHCI IPs
|
|
|
|
The old way of usb wakeup only supports platform with single xHCI IP,
|
|
such as mt8173, but mt2712 has two xHCI IPs, so rebuild its flow and
|
|
supports the new glue layer of usb wakeup on mt2712 which is different
|
|
from mt8173.
|
|
Due to there is a hardware bug with the LINE STATE wakeup mode on
|
|
mt8173 which causes wakeup failure by low speed devices, and also
|
|
because IP SLEEP mode can cover all functions of LINE STATE mode,
|
|
it is unused in fact, and will not support it later, so remove it at
|
|
the same time.
|
|
|
|
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
---
|
|
drivers/usb/host/xhci-mtk.c | 177 +++++++++++++++-----------------------------
|
|
drivers/usb/host/xhci-mtk.h | 6 +-
|
|
2 files changed, 65 insertions(+), 118 deletions(-)
|
|
|
|
--- a/drivers/usb/host/xhci-mtk.c
|
|
+++ b/drivers/usb/host/xhci-mtk.c
|
|
@@ -66,26 +66,21 @@
|
|
/* u2_phy_pll register */
|
|
#define CTRL_U2_FORCE_PLL_STB BIT(28)
|
|
|
|
-#define PERI_WK_CTRL0 0x400
|
|
-#define UWK_CTR0_0P_LS_PE BIT(8) /* posedge */
|
|
-#define UWK_CTR0_0P_LS_NE BIT(7) /* negedge for 0p linestate*/
|
|
-#define UWK_CTL1_1P_LS_C(x) (((x) & 0xf) << 1)
|
|
-#define UWK_CTL1_1P_LS_E BIT(0)
|
|
-
|
|
-#define PERI_WK_CTRL1 0x404
|
|
-#define UWK_CTL1_IS_C(x) (((x) & 0xf) << 26)
|
|
-#define UWK_CTL1_IS_E BIT(25)
|
|
-#define UWK_CTL1_0P_LS_C(x) (((x) & 0xf) << 21)
|
|
-#define UWK_CTL1_0P_LS_E BIT(20)
|
|
-#define UWK_CTL1_IDDIG_C(x) (((x) & 0xf) << 11) /* cycle debounce */
|
|
-#define UWK_CTL1_IDDIG_E BIT(10) /* enable debounce */
|
|
-#define UWK_CTL1_IDDIG_P BIT(9) /* polarity */
|
|
-#define UWK_CTL1_0P_LS_P BIT(7)
|
|
-#define UWK_CTL1_IS_P BIT(6) /* polarity for ip sleep */
|
|
-
|
|
-enum ssusb_wakeup_src {
|
|
- SSUSB_WK_IP_SLEEP = 1,
|
|
- SSUSB_WK_LINE_STATE = 2,
|
|
+/* usb remote wakeup registers in syscon */
|
|
+/* mt8173 etc */
|
|
+#define PERI_WK_CTRL1 0x4
|
|
+#define WC1_IS_C(x) (((x) & 0xf) << 26) /* cycle debounce */
|
|
+#define WC1_IS_EN BIT(25)
|
|
+#define WC1_IS_P BIT(6) /* polarity for ip sleep */
|
|
+
|
|
+/* mt2712 etc */
|
|
+#define PERI_SSUSB_SPM_CTRL 0x0
|
|
+#define SSC_IP_SLEEP_EN BIT(4)
|
|
+#define SSC_SPM_INT_EN BIT(1)
|
|
+
|
|
+enum ssusb_uwk_vers {
|
|
+ SSUSB_UWK_V1 = 1,
|
|
+ SSUSB_UWK_V2,
|
|
};
|
|
|
|
static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
|
|
@@ -308,112 +303,58 @@ static void xhci_mtk_clks_disable(struct
|
|
}
|
|
|
|
/* only clocks can be turn off for ip-sleep wakeup mode */
|
|
-static void usb_wakeup_ip_sleep_en(struct xhci_hcd_mtk *mtk)
|
|
+static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable)
|
|
{
|
|
- u32 tmp;
|
|
- struct regmap *pericfg = mtk->pericfg;
|
|
+ u32 reg, msk, val;
|
|
|
|
- regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
|
|
- tmp &= ~UWK_CTL1_IS_P;
|
|
- tmp &= ~(UWK_CTL1_IS_C(0xf));
|
|
- tmp |= UWK_CTL1_IS_C(0x8);
|
|
- regmap_write(pericfg, PERI_WK_CTRL1, tmp);
|
|
- regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_IS_E);
|
|
-
|
|
- regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
|
|
- dev_dbg(mtk->dev, "%s(): WK_CTRL1[P6,E25,C26:29]=%#x\n",
|
|
- __func__, tmp);
|
|
-}
|
|
-
|
|
-static void usb_wakeup_ip_sleep_dis(struct xhci_hcd_mtk *mtk)
|
|
-{
|
|
- u32 tmp;
|
|
-
|
|
- regmap_read(mtk->pericfg, PERI_WK_CTRL1, &tmp);
|
|
- tmp &= ~UWK_CTL1_IS_E;
|
|
- regmap_write(mtk->pericfg, PERI_WK_CTRL1, tmp);
|
|
+ switch (mtk->uwk_vers) {
|
|
+ case SSUSB_UWK_V1:
|
|
+ reg = mtk->uwk_reg_base + PERI_WK_CTRL1;
|
|
+ msk = WC1_IS_EN | WC1_IS_C(0xf) | WC1_IS_P;
|
|
+ val = enable ? (WC1_IS_EN | WC1_IS_C(0x8)) : 0;
|
|
+ break;
|
|
+ case SSUSB_UWK_V2:
|
|
+ reg = mtk->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
|
|
+ msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;
|
|
+ val = enable ? msk : 0;
|
|
+ break;
|
|
+ default:
|
|
+ return;
|
|
+ };
|
|
+ regmap_update_bits(mtk->uwk, reg, msk, val);
|
|
}
|
|
|
|
-/*
|
|
-* for line-state wakeup mode, phy's power should not power-down
|
|
-* and only support cable plug in/out
|
|
-*/
|
|
-static void usb_wakeup_line_state_en(struct xhci_hcd_mtk *mtk)
|
|
+static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk,
|
|
+ struct device_node *dn)
|
|
{
|
|
- u32 tmp;
|
|
- struct regmap *pericfg = mtk->pericfg;
|
|
-
|
|
- /* line-state of u2-port0 */
|
|
- regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
|
|
- tmp &= ~UWK_CTL1_0P_LS_P;
|
|
- tmp &= ~(UWK_CTL1_0P_LS_C(0xf));
|
|
- tmp |= UWK_CTL1_0P_LS_C(0x8);
|
|
- regmap_write(pericfg, PERI_WK_CTRL1, tmp);
|
|
- regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
|
|
- regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_0P_LS_E);
|
|
+ struct of_phandle_args args;
|
|
+ int ret;
|
|
|
|
- /* line-state of u2-port1 */
|
|
- regmap_read(pericfg, PERI_WK_CTRL0, &tmp);
|
|
- tmp &= ~(UWK_CTL1_1P_LS_C(0xf));
|
|
- tmp |= UWK_CTL1_1P_LS_C(0x8);
|
|
- regmap_write(pericfg, PERI_WK_CTRL0, tmp);
|
|
- regmap_write(pericfg, PERI_WK_CTRL0, tmp | UWK_CTL1_1P_LS_E);
|
|
-}
|
|
+ /* Wakeup function is optional */
|
|
+ mtk->uwk_en = of_property_read_bool(dn, "wakeup-source");
|
|
+ if (!mtk->uwk_en)
|
|
+ return 0;
|
|
|
|
-static void usb_wakeup_line_state_dis(struct xhci_hcd_mtk *mtk)
|
|
-{
|
|
- u32 tmp;
|
|
- struct regmap *pericfg = mtk->pericfg;
|
|
+ ret = of_parse_phandle_with_fixed_args(dn,
|
|
+ "mediatek,syscon-wakeup", 2, 0, &args);
|
|
+ if (ret)
|
|
+ return ret;
|
|
|
|
- /* line-state of u2-port0 */
|
|
- regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
|
|
- tmp &= ~UWK_CTL1_0P_LS_E;
|
|
- regmap_write(pericfg, PERI_WK_CTRL1, tmp);
|
|
+ mtk->uwk_reg_base = args.args[0];
|
|
+ mtk->uwk_vers = args.args[1];
|
|
+ mtk->uwk = syscon_node_to_regmap(args.np);
|
|
+ of_node_put(args.np);
|
|
+ dev_info(mtk->dev, "uwk - reg:0x%x, version:%d\n",
|
|
+ mtk->uwk_reg_base, mtk->uwk_vers);
|
|
|
|
- /* line-state of u2-port1 */
|
|
- regmap_read(pericfg, PERI_WK_CTRL0, &tmp);
|
|
- tmp &= ~UWK_CTL1_1P_LS_E;
|
|
- regmap_write(pericfg, PERI_WK_CTRL0, tmp);
|
|
-}
|
|
+ return PTR_ERR_OR_ZERO(mtk->uwk);
|
|
|
|
-static void usb_wakeup_enable(struct xhci_hcd_mtk *mtk)
|
|
-{
|
|
- if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP)
|
|
- usb_wakeup_ip_sleep_en(mtk);
|
|
- else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE)
|
|
- usb_wakeup_line_state_en(mtk);
|
|
}
|
|
|
|
-static void usb_wakeup_disable(struct xhci_hcd_mtk *mtk)
|
|
+static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable)
|
|
{
|
|
- if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP)
|
|
- usb_wakeup_ip_sleep_dis(mtk);
|
|
- else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE)
|
|
- usb_wakeup_line_state_dis(mtk);
|
|
-}
|
|
-
|
|
-static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk,
|
|
- struct device_node *dn)
|
|
-{
|
|
- struct device *dev = mtk->dev;
|
|
-
|
|
- /*
|
|
- * wakeup function is optional, so it is not an error if this property
|
|
- * does not exist, and in such case, no need to get relative
|
|
- * properties anymore.
|
|
- */
|
|
- of_property_read_u32(dn, "mediatek,wakeup-src", &mtk->wakeup_src);
|
|
- if (!mtk->wakeup_src)
|
|
- return 0;
|
|
-
|
|
- mtk->pericfg = syscon_regmap_lookup_by_phandle(dn,
|
|
- "mediatek,syscon-wakeup");
|
|
- if (IS_ERR(mtk->pericfg)) {
|
|
- dev_err(dev, "fail to get pericfg regs\n");
|
|
- return PTR_ERR(mtk->pericfg);
|
|
- }
|
|
-
|
|
- return 0;
|
|
+ if (mtk->uwk_en)
|
|
+ usb_wakeup_ip_sleep_set(mtk, enable);
|
|
}
|
|
|
|
static int xhci_mtk_setup(struct usb_hcd *hcd);
|
|
@@ -595,8 +536,10 @@ static int xhci_mtk_probe(struct platfor
|
|
&mtk->u3p_dis_msk);
|
|
|
|
ret = usb_wakeup_of_property_parse(mtk, node);
|
|
- if (ret)
|
|
+ if (ret) {
|
|
+ dev_err(dev, "failed to parse uwk property\n");
|
|
return ret;
|
|
+ }
|
|
|
|
mtk->num_phys = of_count_phandle_with_args(node,
|
|
"phys", "#phy-cells");
|
|
@@ -782,7 +725,7 @@ static int __maybe_unused xhci_mtk_suspe
|
|
xhci_mtk_host_disable(mtk);
|
|
xhci_mtk_phy_power_off(mtk);
|
|
xhci_mtk_clks_disable(mtk);
|
|
- usb_wakeup_enable(mtk);
|
|
+ usb_wakeup_set(mtk, true);
|
|
return 0;
|
|
}
|
|
|
|
@@ -792,7 +735,7 @@ static int __maybe_unused xhci_mtk_resum
|
|
struct usb_hcd *hcd = mtk->hcd;
|
|
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
|
|
|
- usb_wakeup_disable(mtk);
|
|
+ usb_wakeup_set(mtk, false);
|
|
xhci_mtk_clks_enable(mtk);
|
|
xhci_mtk_phy_power_on(mtk);
|
|
xhci_mtk_host_enable(mtk);
|
|
--- a/drivers/usb/host/xhci-mtk.h
|
|
+++ b/drivers/usb/host/xhci-mtk.h
|
|
@@ -131,8 +131,12 @@ struct xhci_hcd_mtk {
|
|
struct regmap *pericfg;
|
|
struct phy **phys;
|
|
int num_phys;
|
|
- int wakeup_src;
|
|
bool lpm_support;
|
|
+ /* usb remote wakeup */
|
|
+ bool uwk_en;
|
|
+ struct regmap *uwk;
|
|
+ u32 uwk_reg_base;
|
|
+ u32 uwk_vers;
|
|
};
|
|
|
|
static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd)
|