*
* Copyright (c) 2008 Texas Instruments
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*
* Author: Thomas Abraham t-abraham@ti.com, Texas Instruments
*/
*/
void musb_start(void)
{
+#if defined(CONFIG_MUSB_HCD)
u8 devctl;
+ u8 busctl;
+#endif
/* disable all interrupts */
writew(0, &musbr->intrtxe);
/* put into basic highspeed mode and start session */
writeb(MUSB_POWER_HSENAB, &musbr->power);
#if defined(CONFIG_MUSB_HCD)
+ /* Program PHY to use EXT VBUS if required */
+ if (musb_cfg.extvbus == 1) {
+ busctl = musb_read_ulpi_buscontrol(musbr);
+ musb_write_ulpi_buscontrol(musbr, busctl | ULPI_USE_EXTVBUS);
+ }
+
devctl = readb(&musbr->devctl);
writeb(devctl | MUSB_DEVCTL_SESSION, &musbr->devctl);
#endif
}
+#ifdef MUSB_NO_DYNAMIC_FIFO
+# define config_fifo(dir, idx, addr)
+#else
+# define config_fifo(dir, idx, addr) \
+ do { \
+ writeb(idx, &musbr->dir##fifosz); \
+ writew(fifoaddr >> 3, &musbr->dir##fifoadd); \
+ } while (0)
+#endif
+
/*
* This function configures the endpoint configuration. The musb hcd or musb
* device implementation can use this function to configure the endpoints
* epinfo - Pointer to EP configuration table
* cnt - Number of entries in the EP conf table.
*/
-void musb_configure_ep(struct musb_epinfo *epinfo, u8 cnt)
+void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt)
{
u16 csr;
u16 fifoaddr = 64; /* First 64 bytes of FIFO reserved for EP0 */
writeb(epinfo->epnum, &musbr->index);
if (epinfo->epdir) {
/* Configure fifo size and fifo base address */
- writeb(idx, &musbr->txfifosz);
- writew(fifoaddr >> 3, &musbr->txfifoadd);
+ config_fifo(tx, idx, fifoaddr);
+
+ csr = readw(&musbr->txcsr);
#if defined(CONFIG_MUSB_HCD)
/* clear the data toggle bit */
- csr = readw(&musbr->txcsr);
writew(csr | MUSB_TXCSR_CLRDATATOG, &musbr->txcsr);
#endif
/* Flush fifo if required */
&musbr->txcsr);
} else {
/* Configure fifo size and fifo base address */
- writeb(idx, &musbr->rxfifosz);
- writew(fifoaddr >> 3, &musbr->rxfifoadd);
+ config_fifo(rx, idx, fifoaddr);
+
+ csr = readw(&musbr->rxcsr);
#if defined(CONFIG_MUSB_HCD)
/* clear the data toggle bit */
- csr = readw(&musbr->rxcsr);
writew(csr | MUSB_RXCSR_CLRDATATOG, &musbr->rxcsr);
#endif
/* Flush fifo if required */
* length - number of bytes to write to FIFO
* fifo_data - Pointer to data buffer that contains the data to write
*/
+__attribute__((weak))
void write_fifo(u8 ep, u32 length, void *fifo_data)
{
u8 *data = (u8 *)fifo_data;
writeb(*data++, &musbr->fifox[ep]);
}
+/*
+ * AM35x supports only 32bit read operations so
+ * use seperate read_fifo() function for it.
+ */
+#ifndef CONFIG_USB_AM35X
/*
* This function reads data from endpoint fifo
*
* length - number of bytes to read from FIFO
* fifo_data - pointer to data buffer into which data is read
*/
+__attribute__((weak))
void read_fifo(u8 ep, u32 length, void *fifo_data)
{
u8 *data = (u8 *)fifo_data;
while (length--)
*data++ = readb(&musbr->fifox[ep]);
}
+#endif /* CONFIG_USB_AM35X */