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Subject[PATCH 3/5] phy: renesas: rcar-gen3-usb2: use prefix "has_otg_pins_" for dedicated pins handling
Date
To support gpio handling in the future, this patch clean-ups the code
to use prefix "has_otg_pins_" functions.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
drivers/phy/renesas/phy-rcar-gen3-usb2.c | 130 ++++++++++++++++++++-----------
1 file changed, 85 insertions(+), 45 deletions(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
index beeaa30..6d6f3eb 100644
--- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
@@ -93,21 +93,21 @@ struct rcar_gen3_chan {
bool has_otg_pins;
};

-static void rcar_gen3_phy_usb2_work(struct work_struct *work)
+static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm)
{
- struct rcar_gen3_chan *ch = container_of(work, struct rcar_gen3_chan,
- work);
+ void __iomem *usb2_base = ch->base;
+ u32 val = readl(usb2_base + USB2_LINECTRL1);

- if (ch->extcon_host) {
- extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, true);
- extcon_set_state_sync(ch->extcon, EXTCON_USB, false);
- } else {
- extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, false);
- extcon_set_state_sync(ch->extcon, EXTCON_USB, true);
- }
+ dev_vdbg(&ch->phy->dev, "%s: %08x, %d, %d\n", __func__, val, dp, dm);
+ val &= ~(USB2_LINECTRL1_DP_RPD | USB2_LINECTRL1_DM_RPD);
+ if (dp)
+ val |= USB2_LINECTRL1_DP_RPD;
+ if (dm)
+ val |= USB2_LINECTRL1_DM_RPD;
+ writel(val, usb2_base + USB2_LINECTRL1);
}

-static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
+static void has_otg_pins_set_host(struct rcar_gen3_chan *ch, int host)
{
void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_COMMCTRL);
@@ -120,21 +120,27 @@ static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
writel(val, usb2_base + USB2_COMMCTRL);
}

-static void rcar_gen3_set_linectrl(struct rcar_gen3_chan *ch, int dp, int dm)
+static bool has_otg_pins_is_host(struct rcar_gen3_chan *ch)
+{
+ return !(readl(ch->base + USB2_COMMCTRL) & USB2_COMMCTRL_OTG_PERI);
+}
+
+static irqreturn_t has_otg_pins_irq_handler(struct rcar_gen3_chan *ch)
{
void __iomem *usb2_base = ch->base;
- u32 val = readl(usb2_base + USB2_LINECTRL1);
+ u32 status = readl(usb2_base + USB2_OBINTSTA);
+ irqreturn_t ret = IRQ_NONE;

- dev_vdbg(&ch->phy->dev, "%s: %08x, %d, %d\n", __func__, val, dp, dm);
- val &= ~(USB2_LINECTRL1_DP_RPD | USB2_LINECTRL1_DM_RPD);
- if (dp)
- val |= USB2_LINECTRL1_DP_RPD;
- if (dm)
- val |= USB2_LINECTRL1_DM_RPD;
- writel(val, usb2_base + USB2_LINECTRL1);
+ if (status & USB2_OBINT_BITS) {
+ dev_vdbg(&ch->phy->dev, "%s: %08x\n", __func__, status);
+ writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA);
+ ret = IRQ_HANDLED;
+ }
+
+ return ret;
}

-static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
+static void has_otg_pins_enable_vbus(struct rcar_gen3_chan *ch, int vbus)
{
void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_ADPCTRL);
@@ -147,7 +153,7 @@ static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
writel(val, usb2_base + USB2_ADPCTRL);
}

-static void rcar_gen3_enable_otg_irq(struct rcar_gen3_chan *ch, int enable)
+static void has_otg_pins_enable_irq(struct rcar_gen3_chan *ch, int enable)
{
void __iomem *usb2_base = ch->base;
u32 val = readl(usb2_base + USB2_OBINTEN);
@@ -159,6 +165,57 @@ static void rcar_gen3_enable_otg_irq(struct rcar_gen3_chan *ch, int enable)
writel(val, usb2_base + USB2_OBINTEN);
}

+static bool has_otg_pins_check_id(struct rcar_gen3_chan *ch)
+{
+ return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG);
+}
+
+static void has_otg_pins_init(struct rcar_gen3_chan *ch)
+{
+ void __iomem *usb2_base = ch->base;
+ u32 val;
+
+ val = readl(usb2_base + USB2_VBCTRL);
+ writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL);
+ writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA);
+ has_otg_pins_enable_irq(ch, 1);
+ val = readl(usb2_base + USB2_ADPCTRL);
+ writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL);
+ val = readl(usb2_base + USB2_LINECTRL1);
+ rcar_gen3_set_linectrl(ch, 0, 0);
+ writel(val | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN,
+ usb2_base + USB2_LINECTRL1);
+}
+
+static void rcar_gen3_phy_usb2_work(struct work_struct *work)
+{
+ struct rcar_gen3_chan *ch = container_of(work, struct rcar_gen3_chan,
+ work);
+
+ if (ch->extcon_host) {
+ extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, true);
+ extcon_set_state_sync(ch->extcon, EXTCON_USB, false);
+ } else {
+ extcon_set_state_sync(ch->extcon, EXTCON_USB_HOST, false);
+ extcon_set_state_sync(ch->extcon, EXTCON_USB, true);
+ }
+}
+
+static void rcar_gen3_set_host_mode(struct rcar_gen3_chan *ch, int host)
+{
+ has_otg_pins_set_host(ch, host);
+}
+
+static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
+{
+ has_otg_pins_enable_vbus(ch, vbus);
+}
+
+static void rcar_gen3_enable_otg_irq(struct rcar_gen3_chan *ch, int enable)
+{
+ has_otg_pins_enable_irq(ch, enable);
+}
+
static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch)
{
rcar_gen3_set_linectrl(ch, 1, 1);
@@ -214,7 +271,7 @@ 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)
{
- return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG);
+ return has_otg_pins_check_id(ch);
}

static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch)
@@ -227,7 +284,7 @@ static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch)

static bool rcar_gen3_is_host(struct rcar_gen3_chan *ch)
{
- return !(readl(ch->base + USB2_COMMCTRL) & USB2_COMMCTRL_OTG_PERI);
+ return has_otg_pins_is_host(ch);
}

static enum phy_mode rcar_gen3_get_phy_mode(struct rcar_gen3_chan *ch)
@@ -293,19 +350,7 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr,

static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch)
{
- void __iomem *usb2_base = ch->base;
- u32 val;
-
- val = readl(usb2_base + USB2_VBCTRL);
- writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL);
- writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA);
- rcar_gen3_enable_otg_irq(ch, 1);
- val = readl(usb2_base + USB2_ADPCTRL);
- writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL);
- val = readl(usb2_base + USB2_LINECTRL1);
- rcar_gen3_set_linectrl(ch, 0, 0);
- writel(val | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN,
- usb2_base + USB2_LINECTRL1);
+ has_otg_pins_init(ch);

rcar_gen3_device_recognition(ch);
}
@@ -380,16 +425,11 @@ static int rcar_gen3_phy_usb2_power_off(struct phy *p)
static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch)
{
struct rcar_gen3_chan *ch = _ch;
- void __iomem *usb2_base = ch->base;
- u32 status = readl(usb2_base + USB2_OBINTSTA);
- irqreturn_t ret = IRQ_NONE;
+ irqreturn_t ret;

- if (status & USB2_OBINT_BITS) {
- dev_vdbg(&ch->phy->dev, "%s: %08x\n", __func__, status);
- writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA);
+ ret = has_otg_pins_irq_handler(ch);
+ if (ret == IRQ_HANDLED)
rcar_gen3_device_recognition(ch);
- ret = IRQ_HANDLED;
- }

return ret;
}
--
1.9.1
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