From ba45ca435060614e595a107ac323a36b52619d7d Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Tue, 8 Apr 2008 13:59:18 +0100 Subject: [ARM] 4940/1: AT91: UDPHS driver: SAM9RL board and cpu integration. 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 Acked-by: Andrew Victor Signed-off-by: Russell King --- arch/arm/mach-at91/at91sam9rl_devices.c | 95 +++++++++++++++++++++++++++++++++ arch/arm/mach-at91/board-sam9rlek.c | 10 ++++ arch/arm/mach-at91/clock.c | 9 ++-- 3 files changed, 110 insertions(+), 4 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index 450db304936..8507dd02fe9 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -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 * -------------------------------------------------------------------- */ diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c index ffc0597aee8..b6a70fc735c 100644 --- a/arch/arm/mach-at91/board-sam9rlek.c +++ b/arch/arm/mach-at91/board-sam9rlek.c @@ -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 */ diff --git a/arch/arm/mach-at91/clock.c b/arch/arm/mach-at91/clock.c index b87772cd3d3..e8ce8f0f3ed 100644 --- a/arch/arm/mach-at91/clock.c +++ b/arch/arm/mach-at91/clock.c @@ -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" */ -- cgit v1.2.3