diff options
Diffstat (limited to 'drivers/usb/musb/musb_core.c')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c deleted file mode 100644 index 260552e4dbd..00000000000 --- a/drivers/usb/musb/musb_core.c +++ /dev/null @@ -1,150 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Mentor USB OTG Core functionality common for both Host and Device - * functionality. - * - * Copyright (c) 2008 Texas Instruments - * - * Author: Thomas Abraham t-abraham@ti.com, Texas Instruments - */ - -#include <linux/bitops.h> - -#include "musb_core.h" -struct musb_regs *musbr; - -/* - * program the mentor core to start (enable interrupts, dma, etc.) - */ -void musb_start(void) -{ -#if defined(CONFIG_USB_MUSB_HCD) - u8 devctl; - u8 busctl; -#endif - - /* disable all interrupts */ - writew(0, &musbr->intrtxe); - writew(0, &musbr->intrrxe); - writeb(0, &musbr->intrusbe); - writeb(0, &musbr->testmode); - - /* put into basic highspeed mode and start session */ - writeb(MUSB_POWER_HSENAB, &musbr->power); -#if defined(CONFIG_USB_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(addr, &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 - * and set the FIFO sizes. Note: The summation of FIFO sizes of all endpoints - * should not be more than the available FIFO size. - * - * epinfo - Pointer to EP configuration table - * cnt - Number of entries in the EP conf table. - */ -void musb_configure_ep(const struct musb_epinfo *epinfo, u8 cnt) -{ - u16 csr; - u16 fifoaddr = 64 >> 3; /* First 64 bytes of FIFO reserved for EP0 */ - u32 fifosize; - u8 idx; - - while (cnt--) { - /* prepare fifosize to write to register */ - fifosize = epinfo->epsize >> 3; - idx = fifosize ? ((ffs(fifosize) - 1) & 0xF) : 0; - - writeb(epinfo->epnum, &musbr->index); - if (epinfo->epdir) { - /* Configure fifo size and fifo base address */ - config_fifo(tx, idx, fifoaddr); - - csr = readw(&musbr->txcsr); - /* clear the data toggle bit */ - writew(csr | MUSB_TXCSR_CLRDATATOG, &musbr->txcsr); - /* Flush fifo if required */ - if (csr & MUSB_TXCSR_TXPKTRDY) - writew(csr | MUSB_TXCSR_FLUSHFIFO, - &musbr->txcsr); - } else { - /* Configure fifo size and fifo base address */ - config_fifo(rx, idx, fifoaddr); - - csr = readw(&musbr->rxcsr); - /* clear the data toggle bit */ - writew(csr | MUSB_RXCSR_CLRDATATOG, &musbr->rxcsr); - /* Flush fifo if required */ - if (csr & MUSB_RXCSR_RXPKTRDY) - writew(csr | MUSB_RXCSR_FLUSHFIFO, - &musbr->rxcsr); - } - fifoaddr += 1 << idx; - epinfo++; - } -} - -/* - * This function writes data to endpoint fifo - * - * ep - endpoint number - * 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; - - /* select the endpoint index */ - writeb(ep, &musbr->index); - - /* write the data to the fifo */ - while (length--) - 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 - * - * ep - endpoint number - * 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; - - /* select the endpoint index */ - writeb(ep, &musbr->index); - - /* read the data to the fifo */ - while (length--) - *data++ = readb(&musbr->fifox[ep]); -} -#endif /* CONFIG_USB_AM35X */ |