From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: [patch 2.6.27-omap-git+ 5/5] support LED signals on Beagle Date: Mon, 13 Oct 2008 13:05:05 -0700 Message-ID: <200810131305.05769.david-b@pacbell.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp128.sbc.mail.sp1.yahoo.com ([69.147.65.187]:36280 "HELO smtp128.sbc.mail.sp1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753768AbYJMUSk (ORCPT ); Mon, 13 Oct 2008 16:18:40 -0400 Content-Disposition: inline Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org From: David Brownell Export Beagle's third LED to the LED framework, now that it's accessible through the twl4030-gpio code. Claim the VBUS control, defaulting to OFF. Boards that have an EHCI connector (not rev B) will need to update this slightly. (Ideally as part of adding hooks to the ehci-map code supporting external power switching and overcurrent detection.) Signed-off-by: David Brownell --- arch/arm/mach-omap2/board-omap3beagle.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) --- a/arch/arm/mach-omap2/board-omap3beagle.c +++ b/arch/arm/mach-omap2/board-omap3beagle.c @@ -115,19 +115,26 @@ static struct twl4030_usb_data beagle_us .usb_mode = T2_USB_MODE_ULPI, }; +static struct gpio_led gpio_leds[]; + static int beagle_twl_gpio_setup(struct device *dev, unsigned gpio, unsigned ngpio) { - /* request_gpio(gpio + 0, "mmc0_cd"); - * gpio_direction_input(gpio + 0); + /* gpio + 0 is "mmc0_cd" (input/IRQ) */ + + /* REVISIT: need ehci-omap hooks for external VBUS + * power switch and overcurrent detect */ gpio_request(gpio + 1, "EHCI_nOC"); gpio_direction_input(gpio + 1); - /* gpio + 18 + 0 == ledA, nEN_USB_PWR (out) - * gpio + 18 + 1 == ledB, PMU_STAT (out, a LED) - */ + /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */ + gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR"); + gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1); + + /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */ + gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1; return 0; } @@ -136,6 +143,7 @@ static struct twl4030_gpio_platform_data .gpio_base = OMAP_MAX_GPIO_LINES, .irq_base = TWL4030_GPIO_IRQ_BASE, .irq_end = TWL4030_GPIO_IRQ_END, + .use_leds = true, .pullups = BIT(1), .pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13) | BIT(15) | BIT(16) | BIT(17), @@ -198,6 +206,11 @@ static struct gpio_led gpio_leds[] = { .default_trigger = "mmc0", .gpio = 149, }, + { + .name = "beagleboard::pmu_stat", + .gpio = -EINVAL, /* gets replaced */ + .active_low = true, + }, }; static struct gpio_led_platform_data gpio_led_info = {