a9481f3d6f8d760955bc6cb4e24939bb8cc2406e
[openwrt/openwrt.git] / target / linux / mediatek / patches-4.14 / 0125-phy-phy-mtk-tphy-add-set_mode-callback.patch
1 From d42ebed1aa669c5a897ec0aa5e1ede8d9069894a Mon Sep 17 00:00:00 2001
2 From: Chunfeng Yun <chunfeng.yun@mediatek.com>
3 Date: Thu, 21 Sep 2017 18:31:49 +0800
4 Subject: [PATCH 125/224] phy: phy-mtk-tphy: add set_mode callback
5
6 This is used to force PHY with USB OTG function to enter a specific
7 mode, and override OTG IDPIN(or IDDIG) signal.
8
9 Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
10 Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
11 ---
12 drivers/phy/mediatek/phy-mtk-tphy.c | 39 +++++++++++++++++++++++++++++++++++++
13 1 file changed, 39 insertions(+)
14
15 --- a/drivers/phy/mediatek/phy-mtk-tphy.c
16 +++ b/drivers/phy/mediatek/phy-mtk-tphy.c
17 @@ -96,9 +96,11 @@
18
19 #define U3P_U2PHYDTM1 0x06C
20 #define P2C_RG_UART_EN BIT(16)
21 +#define P2C_FORCE_IDDIG BIT(9)
22 #define P2C_RG_VBUSVALID BIT(5)
23 #define P2C_RG_SESSEND BIT(4)
24 #define P2C_RG_AVALID BIT(2)
25 +#define P2C_RG_IDDIG BIT(1)
26
27 #define U3P_U3_CHIP_GPIO_CTLD 0x0c
28 #define P3C_REG_IP_SW_RST BIT(31)
29 @@ -585,6 +587,31 @@ static void u2_phy_instance_exit(struct
30 }
31 }
32
33 +static void u2_phy_instance_set_mode(struct mtk_tphy *tphy,
34 + struct mtk_phy_instance *instance,
35 + enum phy_mode mode)
36 +{
37 + struct u2phy_banks *u2_banks = &instance->u2_banks;
38 + u32 tmp;
39 +
40 + tmp = readl(u2_banks->com + U3P_U2PHYDTM1);
41 + switch (mode) {
42 + case PHY_MODE_USB_DEVICE:
43 + tmp |= P2C_FORCE_IDDIG | P2C_RG_IDDIG;
44 + break;
45 + case PHY_MODE_USB_HOST:
46 + tmp |= P2C_FORCE_IDDIG;
47 + tmp &= ~P2C_RG_IDDIG;
48 + break;
49 + case PHY_MODE_USB_OTG:
50 + tmp &= ~(P2C_FORCE_IDDIG | P2C_RG_IDDIG);
51 + break;
52 + default:
53 + return;
54 + }
55 + writel(tmp, u2_banks->com + U3P_U2PHYDTM1);
56 +}
57 +
58 static void pcie_phy_instance_init(struct mtk_tphy *tphy,
59 struct mtk_phy_instance *instance)
60 {
61 @@ -881,6 +908,17 @@ static int mtk_phy_exit(struct phy *phy)
62 return 0;
63 }
64
65 +static int mtk_phy_set_mode(struct phy *phy, enum phy_mode mode)
66 +{
67 + struct mtk_phy_instance *instance = phy_get_drvdata(phy);
68 + struct mtk_tphy *tphy = dev_get_drvdata(phy->dev.parent);
69 +
70 + if (instance->type == PHY_TYPE_USB2)
71 + u2_phy_instance_set_mode(tphy, instance, mode);
72 +
73 + return 0;
74 +}
75 +
76 static struct phy *mtk_phy_xlate(struct device *dev,
77 struct of_phandle_args *args)
78 {
79 @@ -931,6 +969,7 @@ static const struct phy_ops mtk_tphy_ops
80 .exit = mtk_phy_exit,
81 .power_on = mtk_phy_power_on,
82 .power_off = mtk_phy_power_off,
83 + .set_mode = mtk_phy_set_mode,
84 .owner = THIS_MODULE,
85 };
86