diff options
author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2020-07-27 10:14:55 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-29 17:53:58 +0300 |
commit | dc4c1aa7eae99d7a69717247cc6bd1c071407104 (patch) | |
tree | c43fcf1891d7a049f5efcac4b1f797e11e5b05bc /drivers | |
parent | 1258450ef38af7ea5b27a0a14195bb406f59cda8 (diff) | |
download | linux-dc4c1aa7eae99d7a69717247cc6bd1c071407104.tar.xz |
usb: mtu3: add ->udc_set_speed()
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/usb/mtu3/mtu3.h | 4 | ||||
-rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 68 | ||||
-rw-r--r-- | drivers/usb/mtu3/mtu3_gadget.c | 14 |
3 files changed, 58 insertions, 28 deletions
diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index d49db92ab26c..9d68f25e4c85 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -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); diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index c37842dbfb95..9e0b68b3920c 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -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)); } diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index 6b26cb8054cd..3d1312972bfe 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -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) |