diff options
Diffstat (limited to 'drivers/phy/renesas/phy-rcar-gen3-usb2.c')
| -rw-r--r-- | drivers/phy/renesas/phy-rcar-gen3-usb2.c | 134 |
1 files changed, 99 insertions, 35 deletions
diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 47beb94cd424..3f6b480e1092 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -9,6 +9,8 @@ * Copyright (C) 2014 Cogent Embedded, Inc. */ +#include <linux/bitfield.h> +#include <linux/bits.h> #include <linux/cleanup.h> #include <linux/extcon-provider.h> #include <linux/interrupt.h> @@ -69,14 +71,20 @@ #define USB2_COMMCTRL_OTG_PERI BIT(31) /* 1 = Peripheral mode */ /* OBINTSTA and OBINTEN */ +#define USB2_OBINTSTA_CLEAR GENMASK(31, 0) #define USB2_OBINT_SESSVLDCHG BIT(12) #define USB2_OBINT_IDDIGCHG BIT(11) -#define USB2_OBINT_BITS (USB2_OBINT_SESSVLDCHG | \ - USB2_OBINT_IDDIGCHG) +#define USB2_OBINT_VBSTAINT BIT(3) +#define USB2_OBINT_IDCHG_EN BIT(0) /* RZ/G2L specific */ /* VBCTRL */ +#define USB2_VBCTRL_VBSTA_MASK GENMASK(31, 28) +#define USB2_VBCTRL_VBSTA_DEFAULT 2 +#define USB2_VBCTRL_VBLVL_MASK GENMASK(23, 20) +#define USB2_VBCTRL_VBLVL(m) FIELD_PREP_CONST(USB2_VBCTRL_VBLVL_MASK, (m)) #define USB2_VBCTRL_OCCLREN BIT(16) #define USB2_VBCTRL_DRVVBUSSEL BIT(8) +#define USB2_VBCTRL_SIDDQREL BIT(2) #define USB2_VBCTRL_VBOUT BIT(0) /* LINECTRL1 */ @@ -89,11 +97,11 @@ /* ADPCTRL */ #define USB2_ADPCTRL_OTGSESSVLD BIT(20) #define USB2_ADPCTRL_IDDIG BIT(19) +#define USB2_ADPCTRL_VBUSVALID BIT(18) #define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */ #define USB2_ADPCTRL_DRVVBUS BIT(4) /* RZ/G2L specific */ -#define USB2_OBINT_IDCHG_EN BIT(0) #define USB2_LINECTRL1_USB2_IDMON BIT(0) #define NUM_OF_PHYS 4 @@ -122,6 +130,7 @@ struct rcar_gen3_phy { struct rcar_gen3_chan { void __iomem *base; struct device *dev; /* platform_device's device */ + const struct rcar_gen3_phy_drv_data *phy_data; struct extcon_dev *extcon; struct rcar_gen3_phy rphys[NUM_OF_PHYS]; struct regulator *vbus; @@ -129,12 +138,9 @@ struct rcar_gen3_chan { struct work_struct work; spinlock_t lock; /* protects access to hardware and driver data structure. */ enum usb_dr_mode dr_mode; - u32 obint_enable_bits; bool extcon_host; bool is_otg_channel; bool uses_otg_pins; - bool soc_no_adp_ctrl; - bool utmi_ctrl; }; struct rcar_gen3_phy_drv_data { @@ -142,6 +148,8 @@ struct rcar_gen3_phy_drv_data { bool no_adp_ctrl; bool init_bus; bool utmi_ctrl; + bool vblvl_ctrl; + u32 obint_enable_bits; }; /* @@ -203,8 +211,7 @@ static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus) u32 vbus_ctrl_val = USB2_ADPCTRL_DRVVBUS; u32 val; - dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus); - if (ch->soc_no_adp_ctrl) { + if (ch->phy_data->no_adp_ctrl || ch->phy_data->vblvl_ctrl) { if (ch->vbus) regulator_hardware_enable(ch->vbus, vbus); @@ -217,6 +224,7 @@ static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus) val |= vbus_ctrl_val; else val &= ~vbus_ctrl_val; + dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus); writel(val, usb2_base + vbus_ctrl_reg); } @@ -226,9 +234,9 @@ static void rcar_gen3_control_otg_irq(struct rcar_gen3_chan *ch, int enable) u32 val = readl(usb2_base + USB2_OBINTEN); if (ch->uses_otg_pins && enable) - val |= ch->obint_enable_bits; + val |= ch->phy_data->obint_enable_bits; else - val &= ~ch->obint_enable_bits; + val &= ~ch->phy_data->obint_enable_bits; writel(val, usb2_base + USB2_OBINTEN); } @@ -287,10 +295,20 @@ static void rcar_gen3_init_from_a_peri_to_a_host(struct rcar_gen3_chan *ch) static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch) { + if (ch->phy_data->vblvl_ctrl) { + bool vbus_valid; + bool device; + + device = !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG); + vbus_valid = !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_VBUSVALID); + + return vbus_valid ? device : !device; + } + if (!ch->uses_otg_pins) - return (ch->dr_mode == USB_DR_MODE_HOST) ? false : true; + return ch->dr_mode != USB_DR_MODE_HOST; - if (ch->soc_no_adp_ctrl) + if (ch->phy_data->no_adp_ctrl) return !!(readl(ch->base + USB2_LINECTRL1) & USB2_LINECTRL1_USB2_IDMON); return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG); @@ -421,21 +439,47 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) USB2_LINECTRL1_DMRPD_EN | USB2_LINECTRL1_DM_RPD; writel(val, usb2_base + USB2_LINECTRL1); - if (!ch->soc_no_adp_ctrl) { - val = readl(usb2_base + USB2_VBCTRL); - val &= ~USB2_VBCTRL_OCCLREN; - writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); - val = readl(usb2_base + USB2_ADPCTRL); - writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); + if (!ch->phy_data->no_adp_ctrl) { + if (ch->phy_data->vblvl_ctrl) { + val = readl(usb2_base + USB2_VBCTRL); + val = (val & ~USB2_VBCTRL_VBLVL_MASK) | USB2_VBCTRL_VBLVL(2); + writel(val, usb2_base + USB2_VBCTRL); + val = readl(usb2_base + USB2_ADPCTRL); + writel(val | USB2_ADPCTRL_IDPULLUP | USB2_ADPCTRL_DRVVBUS, + usb2_base + USB2_ADPCTRL); + } else { + val = readl(usb2_base + USB2_VBCTRL); + val &= ~USB2_VBCTRL_OCCLREN; + writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); + val = readl(usb2_base + USB2_ADPCTRL); + writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); + } } mdelay(20); writel(0xffffffff, usb2_base + USB2_OBINTSTA); - writel(ch->obint_enable_bits, usb2_base + USB2_OBINTEN); + writel(ch->phy_data->obint_enable_bits, usb2_base + USB2_OBINTEN); rcar_gen3_device_recognition(ch); } +static void rcar_gen3_configure_vblvl_ctrl(struct rcar_gen3_chan *ch) +{ + void __iomem *usb2_base = ch->base; + u32 val; + + if (!ch->phy_data->vblvl_ctrl) + return; + + val = readl(usb2_base + USB2_VBCTRL); + if ((val & USB2_VBCTRL_VBSTA_MASK) == + FIELD_PREP_CONST(USB2_VBCTRL_VBSTA_MASK, USB2_VBCTRL_VBSTA_DEFAULT)) + val &= ~USB2_VBCTRL_VBLVL_MASK; + else + val |= USB2_VBCTRL_VBLVL(USB2_VBCTRL_VBSTA_DEFAULT); + writel(val, usb2_base + USB2_VBCTRL); +} + static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch) { struct rcar_gen3_chan *ch = _ch; @@ -451,10 +495,14 @@ static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch) scoped_guard(spinlock, &ch->lock) { status = readl(usb2_base + USB2_OBINTSTA); - if (status & ch->obint_enable_bits) { + if (status & ch->phy_data->obint_enable_bits) { dev_vdbg(dev, "%s: %08x\n", __func__, status); - writel(ch->obint_enable_bits, usb2_base + USB2_OBINTSTA); + if (ch->phy_data->vblvl_ctrl) + writel(USB2_OBINTSTA_CLEAR, usb2_base + USB2_OBINTSTA); + else + writel(ch->phy_data->obint_enable_bits, usb2_base + USB2_OBINTSTA); rcar_gen3_device_recognition(ch); + rcar_gen3_configure_vblvl_ctrl(ch); ret = IRQ_HANDLED; } } @@ -487,7 +535,14 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) if (rphy->int_enable_bits) rcar_gen3_init_otg(channel); - if (channel->utmi_ctrl) { + if (channel->phy_data->vblvl_ctrl) { + /* SIDDQ mode release */ + writel(readl(usb2_base + USB2_VBCTRL) | USB2_VBCTRL_SIDDQREL, + usb2_base + USB2_VBCTRL); + udelay(250); + } + + if (channel->phy_data->utmi_ctrl) { val = readl(usb2_base + USB2_REGEN_CG_CTRL) | USB2_REGEN_CG_CTRL_UPHY_WEN; writel(val, usb2_base + USB2_REGEN_CG_CTRL); @@ -592,28 +647,41 @@ static const struct phy_ops rz_g1c_phy_usb2_ops = { static const struct rcar_gen3_phy_drv_data rcar_gen3_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = false, + .obint_enable_bits = USB2_OBINT_SESSVLDCHG | + USB2_OBINT_IDDIGCHG, }; static const struct rcar_gen3_phy_drv_data rz_g1c_phy_usb2_data = { .phy_usb2_ops = &rz_g1c_phy_usb2_ops, .no_adp_ctrl = false, + .obint_enable_bits = USB2_OBINT_SESSVLDCHG | + USB2_OBINT_IDDIGCHG, }; static const struct rcar_gen3_phy_drv_data rz_g2l_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = true, + .obint_enable_bits = USB2_OBINT_IDCHG_EN, }; static const struct rcar_gen3_phy_drv_data rz_g3s_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = true, .init_bus = true, + .obint_enable_bits = USB2_OBINT_IDCHG_EN, +}; + +static const struct rcar_gen3_phy_drv_data rz_t2h_phy_usb2_data = { + .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, + .vblvl_ctrl = true, + .obint_enable_bits = USB2_OBINT_IDCHG_EN | USB2_OBINT_VBSTAINT, }; static const struct rcar_gen3_phy_drv_data rz_v2h_phy_usb2_data = { .phy_usb2_ops = &rcar_gen3_phy_usb2_ops, .no_adp_ctrl = true, .utmi_ctrl = true, + .obint_enable_bits = USB2_OBINT_IDCHG_EN, }; static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { @@ -642,6 +710,10 @@ static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { .data = &rz_v2h_phy_usb2_data, }, { + .compatible = "renesas,usb2-phy-r9a09g077", + .data = &rz_t2h_phy_usb2_data, + }, + { .compatible = "renesas,rzg2l-usb2-phy", .data = &rz_g2l_phy_usb2_data, }, @@ -730,7 +802,6 @@ rpm_put: static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) { - const struct rcar_gen3_phy_drv_data *phy_data; struct device *dev = &pdev->dev; struct rcar_gen3_chan *channel; struct phy_provider *provider; @@ -749,7 +820,6 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) if (IS_ERR(channel->base)) return PTR_ERR(channel->base); - channel->obint_enable_bits = USB2_OBINT_BITS; channel->dr_mode = rcar_gen3_get_dr_mode(dev->of_node); if (channel->dr_mode != USB_DR_MODE_UNKNOWN) { channel->is_otg_channel = true; @@ -773,8 +843,8 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) */ pm_runtime_enable(dev); - phy_data = of_device_get_match_data(dev); - if (!phy_data) { + channel->phy_data = of_device_get_match_data(dev); + if (!channel->phy_data) { ret = -EINVAL; goto error; } @@ -782,22 +852,16 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) platform_set_drvdata(pdev, channel); channel->dev = dev; - if (phy_data->init_bus) { + if (channel->phy_data->init_bus) { ret = rcar_gen3_phy_usb2_init_bus(channel); if (ret) goto error; } - channel->soc_no_adp_ctrl = phy_data->no_adp_ctrl; - if (phy_data->no_adp_ctrl) - channel->obint_enable_bits = USB2_OBINT_IDCHG_EN; - - channel->utmi_ctrl = phy_data->utmi_ctrl; - spin_lock_init(&channel->lock); for (i = 0; i < NUM_OF_PHYS; i++) { channel->rphys[i].phy = devm_phy_create(dev, NULL, - phy_data->phy_usb2_ops); + channel->phy_data->phy_usb2_ops); if (IS_ERR(channel->rphys[i].phy)) { dev_err(dev, "Failed to create USB2 PHY\n"); ret = PTR_ERR(channel->rphys[i].phy); @@ -808,7 +872,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) phy_set_drvdata(channel->rphys[i].phy, &channel->rphys[i]); } - if (channel->soc_no_adp_ctrl && channel->is_otg_channel) + if (channel->phy_data->no_adp_ctrl && channel->is_otg_channel) channel->vbus = devm_regulator_get_exclusive(dev, "vbus"); else channel->vbus = devm_regulator_get_optional(dev, "vbus"); |