diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2016-10-19 05:28:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-27 18:02:41 +0300 |
| commit | d0ed062a8b75b9c9ba5a942894636f2d9bb72040 (patch) | |
| tree | 13f0860c5451f03778668e823b7c9321b5089d00 /drivers/usb/mtu3/mtu3_core.c | |
| parent | b3f4e727c1ecec36e628e89298349d9c51a32aac (diff) | |
| download | linux-d0ed062a8b75b9c9ba5a942894636f2d9bb72040.tar.xz | |
usb: mtu3: dual-role mode support
support dual-role mode; there are two ways to switch between
host and device modes, one is by idpin, another is by debugfs
which depends on user input.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_core.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 2eef9727312c..520e55a760c9 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -150,7 +150,6 @@ static void mtu3_intr_disable(struct mtu3 *mtu) /* Disable level 1 interrupts */ mtu3_writel(mbase, U3D_LV1IECR, ~0x0); - /* Disable endpoint interrupts */ mtu3_writel(mbase, U3D_EPIECR, ~0x0); } @@ -161,13 +160,10 @@ static void mtu3_intr_status_clear(struct mtu3 *mtu) /* Clear EP0 and Tx/Rx EPn interrupts status */ mtu3_writel(mbase, U3D_EPISR, ~0x0); - /* Clear U2 USB common interrupts status */ mtu3_writel(mbase, U3D_COMMON_USB_INTR, ~0x0); - /* Clear U3 LTSSM interrupts status */ mtu3_writel(mbase, U3D_LTSSM_INTR, ~0x0); - /* Clear speed change interrupt status */ mtu3_writel(mbase, U3D_DEV_LINK_INTR, ~0x0); } @@ -268,7 +264,6 @@ void mtu3_start(struct mtu3 *mtu) /* Initialize the default interrupts */ mtu3_intr_enable(mtu); - mtu->is_active = 1; if (mtu->softconnect) @@ -516,7 +511,6 @@ static int mtu3_mem_alloc(struct mtu3 *mtu) mtu->out_eps = &ep_array[mtu->num_eps]; /* ep0 uses in_eps[0], out_eps[0] is reserved */ mtu->ep0 = mtu->in_eps; - mtu->ep0->mtu = mtu; mtu->ep0->epnum = 0; @@ -560,6 +554,7 @@ static void mtu3_set_speed(struct mtu3 *mtu) /* HS/FS detected by HW */ mtu3_setbits(mbase, U3D_POWER_MANAGEMENT, HS_ENABLE); } + dev_info(mtu->dev, "max_speed: %s\n", usb_speed_string(mtu->max_speed)); } @@ -586,13 +581,10 @@ static void mtu3_regs_init(struct mtu3 *mtu) /* delay about 0.1us from detecting reset to send chirp-K */ mtu3_clrbits(mbase, U3D_LINK_RESET_INFO, WTCHRP_MSK); - /* U2/U3 detected by HW */ mtu3_writel(mbase, U3D_DEVICE_CONF, 0); - /* enable QMU 16B checksum */ mtu3_setbits(mbase, U3D_QCR0, QMU_CS16B_EN); - /* vbus detected by HW */ mtu3_clrbits(mbase, U3D_MISC_CTRL, VBUS_FRC_EN | VBUS_ON); } @@ -838,6 +830,10 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) goto gadget_err; } + /* init as host mode, power down device IP for power saving */ + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + mtu3_stop(mtu); + dev_dbg(dev, " %s() done...\n", __func__); return 0; |