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USB:gadget:designware USB device controller (UDC) implementation

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The earlier usb device controller driver was specific to spear platforms. This
patch implements the usb device controller driver as a generic controller which
can be reused by other platforms using this peripheral.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Vipin KUMAR 2012-03-06 23:39:37 +00:00 • committed by Marek Vasut
parent 5b84dd67cf
commit 2721551a11
5 changed files with 37 additions and 36 deletions
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4
drivers/serial/usbtty.h
View file

@ -33,8 +33,8 @@
#include <usb/musb_udc.h> #include <usb/musb_udc.h>
#elif defined(CONFIG_CPU_PXA27X) #elif defined(CONFIG_CPU_PXA27X)
#include <usb/pxa27x_udc.h> #include <usb/pxa27x_udc.h>
#elif defined(CONFIG_SPEAR3XX) || defined(CONFIG_SPEAR600) #elif defined(CONFIG_DW_UDC)
#include <usb/spr_udc.h> #include <usb/designware_udc.h>
#endif #endif
#include <version.h> #include <version.h>

2
drivers/usb/gadget/Makefile
View file

@ -39,11 +39,11 @@ else
ifdef CONFIG_USB_DEVICE ifdef CONFIG_USB_DEVICE
COBJS-y += core.o COBJS-y += core.o
COBJS-y += ep0.o COBJS-y += ep0.o
COBJS-$(CONFIG_DW_UDC) += designware_udc.o
COBJS-$(CONFIG_OMAP1510) += omap1510_udc.o COBJS-$(CONFIG_OMAP1510) += omap1510_udc.o
COBJS-$(CONFIG_OMAP1610) += omap1510_udc.o COBJS-$(CONFIG_OMAP1610) += omap1510_udc.o
COBJS-$(CONFIG_MPC885_FAMILY) += mpc8xx_udc.o COBJS-$(CONFIG_MPC885_FAMILY) += mpc8xx_udc.o
COBJS-$(CONFIG_CPU_PXA27X) += pxa27x_udc.o COBJS-$(CONFIG_CPU_PXA27X) += pxa27x_udc.o
COBJS-$(CONFIG_SPEARUDC) += spr_udc.o
endif endif
endif endif

57
drivers/usb/gadget/spr_udc.c → drivers/usb/gadget/designware_udc.c
View file

@ -29,14 +29,13 @@
#include <usbdevice.h> #include <usbdevice.h>
#include "ep0.h" #include "ep0.h"
#include <usb/spr_udc.h> #include <usb/designware_udc.h>
#include <asm/arch/hardware.h> #include <asm/arch/hardware.h>
#include <asm/arch/spr_misc.h>
#define UDC_INIT_MDELAY 80 /* Device settle delay */ #define UDC_INIT_MDELAY 80 /* Device settle delay */
/* Some kind of debugging output... */ /* Some kind of debugging output... */
#ifndef DEBUG_SPRUSBTTY #ifndef DEBUG_DWUSBTTY
#define UDCDBG(str) #define UDCDBG(str)
#define UDCDBGA(fmt, args...) #define UDCDBGA(fmt, args...)
#else #else
@ -251,7 +250,7 @@ static void usbputpcktofifo(int epNum, u8 *bufp, u32 len)
} }
/* /*
* spear_write_noniso_tx_fifo - Write the next packet to TxFIFO. * dw_write_noniso_tx_fifo - Write the next packet to TxFIFO.
* @endpoint: Endpoint pointer. * @endpoint: Endpoint pointer.
* *
* If the endpoint has an active tx_urb, then the next packet of data from the * If the endpoint has an active tx_urb, then the next packet of data from the
@ -263,7 +262,7 @@ static void usbputpcktofifo(int epNum, u8 *bufp, u32 len)
* transmitted in this packet. * transmitted in this packet.
* *
*/ */
static void spear_write_noniso_tx_fifo(struct usb_endpoint_instance static void dw_write_noniso_tx_fifo(struct usb_endpoint_instance
*endpoint) *endpoint)
{ {
struct urb *urb = endpoint->tx_urb; struct urb *urb = endpoint->tx_urb;
@ -307,7 +306,7 @@ static void spear_write_noniso_tx_fifo(struct usb_endpoint_instance
* Handle SETUP USB interrupt. * Handle SETUP USB interrupt.
* This function implements TRM Figure 14-14. * This function implements TRM Figure 14-14.
*/ */
static void spear_udc_setup(struct usb_endpoint_instance *endpoint) static void dw_udc_setup(struct usb_endpoint_instance *endpoint)
{ {
u8 *datap = (u8 *)&ep0_urb->device_request; u8 *datap = (u8 *)&ep0_urb->device_request;
int ep_addr = endpoint->endpoint_address; int ep_addr = endpoint->endpoint_address;
@ -344,11 +343,11 @@ static void spear_udc_setup(struct usb_endpoint_instance *endpoint)
endpoint->tx_urb = ep0_urb; endpoint->tx_urb = ep0_urb;
endpoint->sent = 0; endpoint->sent = 0;
/* /*
* Write packet data to the FIFO. spear_write_noniso_tx_fifo * Write packet data to the FIFO. dw_write_noniso_tx_fifo
* will update endpoint->last with the number of bytes written * will update endpoint->last with the number of bytes written
* to the FIFO. * to the FIFO.
*/ */
spear_write_noniso_tx_fifo(endpoint); dw_write_noniso_tx_fifo(endpoint);
writel(0x0, &inep_regs_p[ep_addr].write_done); writel(0x0, &inep_regs_p[ep_addr].write_done);
} }
@ -361,7 +360,7 @@ static void spear_udc_setup(struct usb_endpoint_instance *endpoint)
/* /*
* Handle endpoint 0 RX interrupt * Handle endpoint 0 RX interrupt
*/ */
static void spear_udc_ep0_rx(struct usb_endpoint_instance *endpoint) static void dw_udc_ep0_rx(struct usb_endpoint_instance *endpoint)
{ {
u8 dummy[64]; u8 dummy[64];
@ -395,7 +394,7 @@ static void spear_udc_ep0_rx(struct usb_endpoint_instance *endpoint)
/* /*
* Handle endpoint 0 TX interrupt * Handle endpoint 0 TX interrupt
*/ */
static void spear_udc_ep0_tx(struct usb_endpoint_instance *endpoint) static void dw_udc_ep0_tx(struct usb_endpoint_instance *endpoint)
{ {
struct usb_device_request *request = &ep0_urb->device_request; struct usb_device_request *request = &ep0_urb->device_request;
int ep_addr; int ep_addr;
@ -444,7 +443,7 @@ static void spear_udc_ep0_tx(struct usb_endpoint_instance *endpoint)
* need a zero-length terminating packet. * need a zero-length terminating packet.
*/ */
UDCDBG("ACK control read data stage packet"); UDCDBG("ACK control read data stage packet");
spear_write_noniso_tx_fifo(endpoint); dw_write_noniso_tx_fifo(endpoint);
ep_addr = endpoint->endpoint_address; ep_addr = endpoint->endpoint_address;
writel(0x0, &inep_regs_p[ep_addr].write_done); writel(0x0, &inep_regs_p[ep_addr].write_done);
@ -452,7 +451,7 @@ static void spear_udc_ep0_tx(struct usb_endpoint_instance *endpoint)
} }
} }
static struct usb_endpoint_instance *spear_find_ep(int ep) static struct usb_endpoint_instance *dw_find_ep(int ep)
{ {
int i; int i;
@ -469,11 +468,11 @@ static struct usb_endpoint_instance *spear_find_ep(int ep)
* The ep argument is a physical endpoint number for a non-ISO IN endpoint * The ep argument is a physical endpoint number for a non-ISO IN endpoint
* in the range 1 to 15. * in the range 1 to 15.
*/ */
static void spear_udc_epn_rx(int ep) static void dw_udc_epn_rx(int ep)
{ {
int nbytes = 0; int nbytes = 0;
struct urb *urb; struct urb *urb;
struct usb_endpoint_instance *endpoint = spear_find_ep(ep); struct usb_endpoint_instance *endpoint = dw_find_ep(ep);
if (endpoint) { if (endpoint) {
urb = endpoint->rcv_urb; urb = endpoint->rcv_urb;
@ -494,9 +493,9 @@ static void spear_udc_epn_rx(int ep)
* The ep argument is a physical endpoint number for a non-ISO IN endpoint * The ep argument is a physical endpoint number for a non-ISO IN endpoint
* in the range 16 to 30. * in the range 16 to 30.
*/ */
static void spear_udc_epn_tx(int ep) static void dw_udc_epn_tx(int ep)
{ {
struct usb_endpoint_instance *endpoint = spear_find_ep(ep); struct usb_endpoint_instance *endpoint = dw_find_ep(ep);
/* /*
* We need to transmit a terminating zero-length packet now if * We need to transmit a terminating zero-length packet now if
@ -516,7 +515,7 @@ static void spear_udc_epn_tx(int ep)
*/ */
if (endpoint->tx_urb && endpoint->tx_urb->actual_length) { if (endpoint->tx_urb && endpoint->tx_urb->actual_length) {
/* write data to FIFO */ /* write data to FIFO */
spear_write_noniso_tx_fifo(endpoint); dw_write_noniso_tx_fifo(endpoint);
writel(0x0, &inep_regs_p[ep].write_done); writel(0x0, &inep_regs_p[ep].write_done);
} else if (endpoint->tx_urb } else if (endpoint->tx_urb
@ -765,7 +764,7 @@ void udc_startup_events(struct usb_device_instance *device)
* DEVICE_HUB_CONFIGURED and DEVICE_RESET events here. * DEVICE_HUB_CONFIGURED and DEVICE_RESET events here.
* DEVICE_HUB_CONFIGURED causes a transition to the state STATE_POWERED, * DEVICE_HUB_CONFIGURED causes a transition to the state STATE_POWERED,
* and DEVICE_RESET causes a transition to the state STATE_DEFAULT. * and DEVICE_RESET causes a transition to the state STATE_DEFAULT.
* The SPEAr USB client controller has the capability to detect when the * The DW USB client controller has the capability to detect when the
* USB cable is connected to a powered USB bus, so we will defer the * USB cable is connected to a powered USB bus, so we will defer the
* DEVICE_HUB_CONFIGURED and DEVICE_RESET events until later. * DEVICE_HUB_CONFIGURED and DEVICE_RESET events until later.
*/ */
@ -776,7 +775,7 @@ void udc_startup_events(struct usb_device_instance *device)
/* /*
* Plug detection interrupt handling * Plug detection interrupt handling
*/ */
void spear_udc_plug_irq(void) void dw_udc_plug_irq(void)
{ {
if (readl(&plug_regs_p->plug_state) & PLUG_STATUS_ATTACHED) { if (readl(&plug_regs_p->plug_state) & PLUG_STATUS_ATTACHED) {
/* /*
@ -805,7 +804,7 @@ void spear_udc_plug_irq(void)
/* /*
* Device interrupt handling * Device interrupt handling
*/ */
void spear_udc_dev_irq(void) void dw_udc_dev_irq(void)
{ {
if (readl(&udc_regs_p->dev_int) & DEV_INT_USBRESET) { if (readl(&udc_regs_p->dev_int) & DEV_INT_USBRESET) {
writel(~0x0, &udc_regs_p->endp_int_mask); writel(~0x0, &udc_regs_p->endp_int_mask);
@ -870,7 +869,7 @@ void spear_udc_dev_irq(void)
/* /*
* Endpoint interrupt handling * Endpoint interrupt handling
*/ */
void spear_udc_endpoint_irq(void) void dw_udc_endpoint_irq(void)
{ {
while (readl(&udc_regs_p->endp_int) & ENDP0_INT_CTRLOUT) { while (readl(&udc_regs_p->endp_int) & ENDP0_INT_CTRLOUT) {
@ -878,13 +877,13 @@ void spear_udc_endpoint_irq(void)
if ((readl(&outep_regs_p[0].endp_status) & ENDP_STATUS_OUTMSK) if ((readl(&outep_regs_p[0].endp_status) & ENDP_STATUS_OUTMSK)
== ENDP_STATUS_OUT_SETUP) { == ENDP_STATUS_OUT_SETUP) {
spear_udc_setup(udc_device->bus->endpoint_array + 0); dw_udc_setup(udc_device->bus->endpoint_array + 0);
writel(ENDP_STATUS_OUT_SETUP, writel(ENDP_STATUS_OUT_SETUP,
&outep_regs_p[0].endp_status); &outep_regs_p[0].endp_status);
} else if ((readl(&outep_regs_p[0].endp_status) & } else if ((readl(&outep_regs_p[0].endp_status) &
ENDP_STATUS_OUTMSK) == ENDP_STATUS_OUT_DATA) { ENDP_STATUS_OUTMSK) == ENDP_STATUS_OUT_DATA) {
spear_udc_ep0_rx(udc_device->bus->endpoint_array + 0); dw_udc_ep0_rx(udc_device->bus->endpoint_array + 0);
writel(ENDP_STATUS_OUT_DATA, writel(ENDP_STATUS_OUT_DATA,
&outep_regs_p[0].endp_status); &outep_regs_p[0].endp_status);
@ -897,7 +896,7 @@ void spear_udc_endpoint_irq(void)
} }
if (readl(&udc_regs_p->endp_int) & ENDP0_INT_CTRLIN) { if (readl(&udc_regs_p->endp_int) & ENDP0_INT_CTRLIN) {
spear_udc_ep0_tx(udc_device->bus->endpoint_array + 0); dw_udc_ep0_tx(udc_device->bus->endpoint_array + 0);
writel(ENDP_STATUS_IN, &inep_regs_p[0].endp_status); writel(ENDP_STATUS_IN, &inep_regs_p[0].endp_status);
writel(ENDP0_INT_CTRLIN, &udc_regs_p->endp_int); writel(ENDP0_INT_CTRLIN, &udc_regs_p->endp_int);
@ -919,7 +918,7 @@ void spear_udc_endpoint_irq(void)
if ((readl(&outep_regs_p[epnum].endp_status) & if ((readl(&outep_regs_p[epnum].endp_status) &
ENDP_STATUS_OUTMSK) == ENDP_STATUS_OUT_DATA) { ENDP_STATUS_OUTMSK) == ENDP_STATUS_OUT_DATA) {
spear_udc_epn_rx(epnum); dw_udc_epn_rx(epnum);
writel(ENDP_STATUS_OUT_DATA, writel(ENDP_STATUS_OUT_DATA,
&outep_regs_p[epnum].endp_status); &outep_regs_p[epnum].endp_status);
} else if ((readl(&outep_regs_p[epnum].endp_status) & } else if ((readl(&outep_regs_p[epnum].endp_status) &
@ -941,7 +940,7 @@ void spear_udc_endpoint_irq(void)
if (readl(&inep_regs_p[epnum].endp_status) & ENDP_STATUS_IN) { if (readl(&inep_regs_p[epnum].endp_status) & ENDP_STATUS_IN) {
writel(ENDP_STATUS_IN, writel(ENDP_STATUS_IN,
&outep_regs_p[epnum].endp_status); &outep_regs_p[epnum].endp_status);
spear_udc_epn_tx(epnum); dw_udc_epn_tx(epnum);
writel(ENDP_STATUS_IN, writel(ENDP_STATUS_IN,
&outep_regs_p[epnum].endp_status); &outep_regs_p[epnum].endp_status);
@ -963,13 +962,13 @@ void udc_irq(void)
* host requests. * host requests.
*/ */
while (readl(&plug_regs_p->plug_pending)) while (readl(&plug_regs_p->plug_pending))
spear_udc_plug_irq(); dw_udc_plug_irq();
while (readl(&udc_regs_p->dev_int)) while (readl(&udc_regs_p->dev_int))
spear_udc_dev_irq(); dw_udc_dev_irq();
if (readl(&udc_regs_p->endp_int)) if (readl(&udc_regs_p->endp_int))
spear_udc_endpoint_irq(); dw_udc_endpoint_irq();
} }
/* Flow control */ /* Flow control */

4
include/configs/spear-common.h
View file

@ -28,14 +28,16 @@
*/ */
/* USBD driver configuration */ /* USBD driver configuration */
#define CONFIG_SPEARUDC #define CONFIG_DW_UDC
#define CONFIG_USB_DEVICE #define CONFIG_USB_DEVICE
#define CONFIG_USB_TTY #define CONFIG_USB_TTY
#define CONFIG_USBD_PRODUCT_NAME "SPEAr SoC" #define CONFIG_USBD_PRODUCT_NAME "SPEAr SoC"
#define CONFIG_USBD_MANUFACTURER "ST Microelectronics" #define CONFIG_USBD_MANUFACTURER "ST Microelectronics"
#if defined(CONFIG_USB_TTY)
#define CONFIG_EXTRA_ENV_USBTTY "usbtty=cdc_acm\0" #define CONFIG_EXTRA_ENV_USBTTY "usbtty=cdc_acm\0"
#endif
/* I2C driver configuration */ /* I2C driver configuration */
#define CONFIG_HARD_I2C #define CONFIG_HARD_I2C

6
include/usb/spr_udc.h → include/usb/designware_udc.h
View file

@ -21,8 +21,8 @@
* MA 02111-1307 USA * MA 02111-1307 USA
*/ */
#ifndef __SPR_UDC_H #ifndef __DW_UDC_H
#define __SPR_UDC_H #define __DW_UDC_H
/* /*
* Defines for USBD * Defines for USBD
@ -227,4 +227,4 @@ void udc_startup_events(struct usb_device_instance *device);
void udc_setup_ep(struct usb_device_instance *device, unsigned int ep, void udc_setup_ep(struct usb_device_instance *device, unsigned int ep,
struct usb_endpoint_instance *endpoint); struct usb_endpoint_instance *endpoint);
#endif /* __SPR_UDC_H */ #endif /* __DW_UDC_H */