diff options
| author | Patrice Chotard <patrice.chotard@st.com> | 2019-03-29 15:42:20 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-04-21 10:26:52 +0200 |
| commit | 763bb106f66c147b7d0c3046dbba66a07d7a9dd2 (patch) | |
| tree | 88d8ab8ac95746c9fa6d772e1c83298b7e5fde47 /drivers/usb | |
| parent | 5bd97e80730bdda59656ca927d67d62fb2a4ecb6 (diff) | |
usb: dwc2_udc_otg: Add tx_fifo_sz array support
All TX fifo size can be different, add tx_fifo_sz_array[]
into dwc2_plat_otg_data to be able to set them.
tx_fifo_sz_array[] is 17 Bytes long and can contains max 16
tx fifo size (synopsys IP supports max 16 IN endpoints).
First entry of tx_fifo_sz_array[] is the number of valid
fifo size the array contains.
In case of tx_fifo_sz_array[] doesn't contains the same
number of element than max hardware endpoint, display
a warning message.
Compatibility with board which doesn't use tx_fifo_sz_array[]
(Rockchip rk322x/rk3128/rv1108/rk3288/rk3036) is kept.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/dwc2_udc_otg.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index 5c7d131a5d..106dec5d09 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -457,6 +457,7 @@ static void reconfig_usbd(struct dwc2_udc *dev) uint32_t dflt_gusbcfg; uint32_t rx_fifo_sz, tx_fifo_sz, np_tx_fifo_sz; u32 max_hw_ep; + int pdata_hw_ep; debug("Reseting OTG controller\n"); @@ -542,11 +543,20 @@ static void reconfig_usbd(struct dwc2_udc *dev) /* retrieve the number of IN Endpoints (excluding ep0) */ max_hw_ep = (readl(®->ghwcfg4) & GHWCFG4_NUM_IN_EPS_MASK) >> GHWCFG4_NUM_IN_EPS_SHIFT; + pdata_hw_ep = dev->pdata->tx_fifo_sz_nb; + + /* tx_fifo_sz_nb should equal to number of IN Endpoint */ + if (pdata_hw_ep && max_hw_ep != pdata_hw_ep) + pr_warn("Got %d hw endpoint but %d tx-fifo-size in array !!\n", + max_hw_ep, pdata_hw_ep); + + for (i = 0; i < max_hw_ep; i++) { + if (pdata_hw_ep) + tx_fifo_sz = dev->pdata->tx_fifo_sz_array[i]; - for (i = 0; i < max_hw_ep; i++) writel((rx_fifo_sz + np_tx_fifo_sz + (tx_fifo_sz * i)) | tx_fifo_sz << 16, ®->dieptxf[i]); - + } /* Flush the RX FIFO */ writel(RX_FIFO_FLUSH, ®->grstctl); while (readl(®->grstctl) & RX_FIFO_FLUSH) |