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[ARM] 4940/1: AT91: UDPHS driver: SAM9RL board and cpu integration.

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Adds support for the USB High Speed Device Port on the AT91SAM9RL
system on chip. The AT91SAM9RL uses the same UDPHS IP as the AVR32 and
the AT91CAP9 (atmel_usba_udc driver).

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nicolas Ferre 2008-04-08 13:59:18 +01:00 committed by Russell King
parent 6b71dbf65e
commit ba45ca4350
5 changed files with 113 additions and 7 deletions
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95
arch/arm/mach-at91/at91sam9rl_devices.c
View File

@ -25,6 +25,101 @@
#include "generic.h"
/* --------------------------------------------------------------------
* USB HS Device (Gadget)
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_GADGET_ATMEL_USBA) || defined(CONFIG_USB_GADGET_ATMEL_USBA_MODULE)
static struct resource usba_udc_resources[] = {
[0] = {
.start = AT91SAM9RL_UDPHS_FIFO,
.end = AT91SAM9RL_UDPHS_FIFO + SZ_512K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9RL_BASE_UDPHS,
.end = AT91SAM9RL_BASE_UDPHS + SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = AT91SAM9RL_ID_UDPHS,
.end = AT91SAM9RL_ID_UDPHS,
.flags = IORESOURCE_IRQ,
},
};
#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
[idx] = { \
.name = nam, \
.index = idx, \
.fifo_size = maxpkt, \
.nr_banks = maxbk, \
.can_dma = dma, \
.can_isoc = isoc, \
}
static struct usba_ep_data usba_udc_ep[] __initdata = {
EP("ep0", 0, 64, 1, 0, 0),
EP("ep1", 1, 1024, 2, 1, 1),
EP("ep2", 2, 1024, 2, 1, 1),
EP("ep3", 3, 1024, 3, 1, 0),
EP("ep4", 4, 1024, 3, 1, 0),
EP("ep5", 5, 1024, 3, 1, 1),
EP("ep6", 6, 1024, 3, 1, 1),
};
#undef EP
/*
* pdata doesn't have room for any endpoints, so we need to
* append room for the ones we need right after it.
*/
static struct {
struct usba_platform_data pdata;
struct usba_ep_data ep[7];
} usba_udc_data;
static struct platform_device at91_usba_udc_device = {
.name = "atmel_usba_udc",
.id = -1,
.dev = {
.platform_data = &usba_udc_data.pdata,
},
.resource = usba_udc_resources,
.num_resources = ARRAY_SIZE(usba_udc_resources),
};
void __init at91_add_device_usba(struct usba_platform_data *data)
{
/*
* Invalid pins are 0 on AT91, but the usba driver is shared
* with AVR32, which use negative values instead. Once/if
* gpio_is_valid() is ported to AT91, revisit this code.
*/
usba_udc_data.pdata.vbus_pin = -EINVAL;
usba_udc_data.pdata.num_ep = ARRAY_SIZE(usba_udc_ep);
memcpy(usba_udc_data.ep, usba_udc_ep, sizeof(usba_udc_ep));;
if (data && data->vbus_pin > 0) {
at91_set_gpio_input(data->vbus_pin, 0);
at91_set_deglitch(data->vbus_pin, 1);
usba_udc_data.pdata.vbus_pin = data->vbus_pin;
}
/* Pullup pin is handled internally by USB device peripheral */
/* Clocks */
at91_clock_associate("utmi_clk", &at91_usba_udc_device.dev, "hclk");
at91_clock_associate("udphs_clk", &at91_usba_udc_device.dev, "pclk");
platform_device_register(&at91_usba_udc_device);
}
#else
void __init at91_add_device_usba(struct usba_platform_data *data) {}
#endif
/* --------------------------------------------------------------------
* MMC / SD
* -------------------------------------------------------------------- */

10
arch/arm/mach-at91/board-sam9rlek.c
View File

@ -55,6 +55,14 @@ static void __init ek_init_irq(void)
}
/*
* USB HS Device port
*/
static struct usba_platform_data __initdata ek_usba_udc_data = {
.vbus_pin = AT91_PIN_PA8,
};
/*
* MCI (SD/MMC)
*/
@ -175,6 +183,8 @@ static void __init ek_board_init(void)
{
/* Serial */
at91_add_device_serial();
/* USB HS */
at91_add_device_usba(&ek_usba_udc_data);
/* I2C */
at91_add_device_i2c(NULL, 0);
/* NAND */

9
arch/arm/mach-at91/clock.c
View File

@ -391,8 +391,9 @@ static int at91_clk_show(struct seq_file *s, void *unused)
seq_printf(s, "MOR = %8x\n", at91_sys_read(AT91_CKGR_MOR));
seq_printf(s, "MCFR = %8x\n", at91_sys_read(AT91_CKGR_MCFR));
seq_printf(s, "PLLA = %8x\n", at91_sys_read(AT91_CKGR_PLLAR));
seq_printf(s, "PLLB = %8x\n", at91_sys_read(AT91_CKGR_PLLBR));
if (cpu_is_at91cap9())
if (!cpu_is_at91sam9rl())
seq_printf(s, "PLLB = %8x\n", at91_sys_read(AT91_CKGR_PLLBR));
if (cpu_is_at91cap9() || cpu_is_at91sam9rl())
seq_printf(s, "UCKR = %8x\n", uckr = at91_sys_read(AT91_CKGR_UCKR));
seq_printf(s, "MCKR = %8x\n", at91_sys_read(AT91_PMC_MCKR));
seq_printf(s, "SR = %8x\n", sr = at91_sys_read(AT91_PMC_SR));
@ -610,7 +611,7 @@ int __init at91_clock_init(unsigned long main_clock)
/*
* USB HS clock init
*/
if (cpu_is_at91cap9()) {
if (cpu_is_at91cap9() || cpu_is_at91sam9rl()) {
/*
* multiplier is hard-wired to 40
* (obtain the USB High Speed 480 MHz when input is 12 MHz)
@ -635,7 +636,7 @@ int __init at91_clock_init(unsigned long main_clock)
for (i = 0; i < ARRAY_SIZE(standard_pmc_clocks); i++)
list_add_tail(&standard_pmc_clocks[i]->node, &clocks);
if (cpu_is_at91cap9())
if (cpu_is_at91cap9() || cpu_is_at91sam9rl())
list_add_tail(&utmi_clk.node, &clocks);
/* MCK and CPU clock are "always on" */

4
drivers/usb/gadget/Kconfig
View File

@ -118,10 +118,10 @@ config USB_AMD5536UDC
config USB_GADGET_ATMEL_USBA
boolean "Atmel USBA"
select USB_GADGET_DUALSPEED
depends on AVR32 || ARCH_AT91CAP9
depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL
help
USBA is the integrated high-speed USB Device controller on
the AT32AP700x and AT91CAP9 processors from Atmel.
the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
config USB_ATMEL_USBA
tristate

2
include/asm-arm/arch-at91/at91sam9rl.h
View File

@ -110,6 +110,6 @@
#define AT91SAM9RL_ROM_SIZE (2 * SZ_16K) /* Internal ROM size (32Kb) */
#define AT91SAM9RL_LCDC_BASE 0x00500000 /* LCD Controller */
#define AT91SAM9RL_UDPHS_BASE 0x00600000 /* USB Device HS controller */
#define AT91SAM9RL_UDPHS_FIFO 0x00600000 /* USB Device HS controller */
#endif