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usb: mtu3: add ->udc_set_speed()

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Make use of the method to make sure connect on speeds
supported by the gadget driver.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1595834101-13094-6-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2020-07-27 15:14:55 +08:00 committed by Greg Kroah-Hartman
parent 1258450ef3
commit dc4c1aa7ea
3 changed files with 58 additions and 28 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/usb/mtu3/mtu3.h
View file

@ -348,7 +348,8 @@ struct mtu3 {
struct usb_gadget_driver *gadget_driver;
struct mtu3_request ep0_req;
u8 setup_buf[EP0_RESPONSE_BUF];
u32 max_speed;
enum usb_device_speed max_speed;
enum usb_device_speed speed;
unsigned is_active:1;
unsigned may_wakeup:1;
@ -433,6 +434,7 @@ void mtu3_ep0_setup(struct mtu3 *mtu);
void mtu3_start(struct mtu3 *mtu);
void mtu3_stop(struct mtu3 *mtu);
void mtu3_dev_on_off(struct mtu3 *mtu, int is_on);
void mtu3_set_speed(struct mtu3 *mtu, enum usb_device_speed speed);
int mtu3_gadget_setup(struct mtu3 *mtu);
void mtu3_gadget_cleanup(struct mtu3 *mtu);

68
drivers/usb/mtu3/mtu3_core.c
View file

@ -203,7 +203,42 @@ static void mtu3_intr_enable(struct mtu3 *mtu)
mtu3_writel(mbase, U3D_DEV_LINK_INTR_ENABLE, SSUSB_DEV_SPEED_CHG_INTR);
}
static void mtu3_set_speed(struct mtu3 *mtu);
void mtu3_set_speed(struct mtu3 *mtu, enum usb_device_speed speed)
{
void __iomem *mbase = mtu->mac_base;
if (speed > mtu->max_speed)
speed = mtu->max_speed;
switch (speed) {
case USB_SPEED_FULL:
/* disable U3 SS function */
mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
/* disable HS function */
mtu3_clrbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
break;
case USB_SPEED_HIGH:
mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
/* HS/FS detected by HW */
mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
break;
case USB_SPEED_SUPER:
mtu3_clrbits(mtu->ippc_base, SSUSB_U3_CTRL(0),
SSUSB_U3_PORT_SSP_SPEED);
break;
case USB_SPEED_SUPER_PLUS:
mtu3_setbits(mtu->ippc_base, SSUSB_U3_CTRL(0),
SSUSB_U3_PORT_SSP_SPEED);
break;
default:
dev_err(mtu->dev, "invalid speed: %s\n",
usb_speed_string(speed));
return;
}
mtu->speed = speed;
dev_dbg(mtu->dev, "set speed: %s\n", usb_speed_string(speed));
}
/* CSR registers will be reset to default value if port is disabled */
static void mtu3_csr_init(struct mtu3 *mtu)
@ -225,8 +260,6 @@ static void mtu3_csr_init(struct mtu3 *mtu)
mtu3_setbits(mbase, U3D_U3U2_SWITCH_CTRL, SOFTCON_CLR_AUTO_EN);
}
mtu3_set_speed(mtu);
/* delay about 0.1us from detecting reset to send chirp-K */
mtu3_clrbits(mbase, U3D_LINK_RESET_INFO, WTCHRP_MSK);
/* enable automatical HWRW from L1 */
@ -280,13 +313,13 @@ void mtu3_ep_stall_set(struct mtu3_ep *mep, bool set)
void mtu3_dev_on_off(struct mtu3 *mtu, int is_on)
{
if (mtu->is_u3_ip && mtu->max_speed >= USB_SPEED_SUPER)
if (mtu->is_u3_ip && mtu->speed >= USB_SPEED_SUPER)
mtu3_ss_func_set(mtu, is_on);
else
mtu3_hs_softconn_set(mtu, is_on);
dev_info(mtu->dev, "gadget (%s) pullup D%s\n",
usb_speed_string(mtu->max_speed), is_on ? "+" : "-");
usb_speed_string(mtu->speed), is_on ? "+" : "-");
}
void mtu3_start(struct mtu3 *mtu)
@ -299,6 +332,7 @@ void mtu3_start(struct mtu3 *mtu)
mtu3_clrbits(mtu->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN);
mtu3_csr_init(mtu);
mtu3_set_speed(mtu, mtu->speed);
/* Initialize the default interrupts */
mtu3_intr_enable(mtu);
@ -569,28 +603,6 @@ static void mtu3_mem_free(struct mtu3 *mtu)
kfree(mtu->ep_array);
}
static void mtu3_set_speed(struct mtu3 *mtu)
{
void __iomem *mbase = mtu->mac_base;
if (mtu->max_speed == USB_SPEED_FULL) {
/* disable U3 SS function */
mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
/* disable HS function */
mtu3_clrbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
} else if (mtu->max_speed == USB_SPEED_HIGH) {
mtu3_clrbits(mbase, U3D_USB3_CONFIG, USB3_EN);
/* HS/FS detected by HW */
mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE);
} else if (mtu->max_speed == USB_SPEED_SUPER) {
mtu3_clrbits(mtu->ippc_base, SSUSB_U3_CTRL(0),
SSUSB_U3_PORT_SSP_SPEED);
}
dev_info(mtu->dev, "max_speed: %s\n",
usb_speed_string(mtu->max_speed));
}
static void mtu3_regs_init(struct mtu3 *mtu)
{
void __iomem *mbase = mtu->mac_base;
@ -780,6 +792,8 @@ static void mtu3_check_params(struct mtu3 *mtu)
if (!mtu->is_u3_ip && (mtu->max_speed > USB_SPEED_HIGH))
mtu->max_speed = USB_SPEED_HIGH;
mtu->speed = mtu->max_speed;
dev_info(mtu->dev, "max_speed: %s\n",
usb_speed_string(mtu->max_speed));
}

14
drivers/usb/mtu3/mtu3_gadget.c
View file

@ -577,6 +577,19 @@ static int mtu3_gadget_stop(struct usb_gadget *g)
return 0;
}
static void
mtu3_gadget_set_speed(struct usb_gadget *g, enum usb_device_speed speed)
{
struct mtu3 *mtu = gadget_to_mtu3(g);
unsigned long flags;
dev_dbg(mtu->dev, "%s %s\n", __func__, usb_speed_string(speed));
spin_lock_irqsave(&mtu->lock, flags);
mtu3_set_speed(mtu, speed);
spin_unlock_irqrestore(&mtu->lock, flags);
}
static const struct usb_gadget_ops mtu3_gadget_ops = {
.get_frame = mtu3_gadget_get_frame,
.wakeup = mtu3_gadget_wakeup,
@ -584,6 +597,7 @@ static const struct usb_gadget_ops mtu3_gadget_ops = {
.pullup = mtu3_gadget_pullup,
.udc_start = mtu3_gadget_start,
.udc_stop = mtu3_gadget_stop,
.udc_set_speed = mtu3_gadget_set_speed,
};
static void mtu3_state_reset(struct mtu3 *mtu)