From bd41b99d4661e775ff152f2842782c43dbb30a59 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 23 Apr 2009 21:15:04 +0100 Subject: [ARM] 5471/2: U300 GPIO and PADMUX support This adds GPIO and PADMUX headers and implementation for the U300 platform. This is an implementation in isolation that depend on later patches in this series to plug into the framework. Signed-off-by: Linus Walleij Signed-off-by: Russell King --- arch/arm/mach-u300/padmux.c | 58 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 arch/arm/mach-u300/padmux.c (limited to 'arch/arm/mach-u300/padmux.c') diff --git a/arch/arm/mach-u300/padmux.c b/arch/arm/mach-u300/padmux.c new file mode 100644 index 00000000000..f3664564f08 --- /dev/null +++ b/arch/arm/mach-u300/padmux.c @@ -0,0 +1,58 @@ +/* + * + * arch/arm/mach-u300/padmux.c + * + * + * Copyright (C) 2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * U300 PADMUX functions + * Author: Linus Walleij + * + */ +#include +#include +#include +#include + +#include "padmux.h" + +/* Set the PAD MUX to route the MMC reader correctly to GPIO0. */ +void pmx_set_mission_mode_mmc(void) +{ + u16 val; + + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1LR); + val &= ~U300_SYSCON_PMC1LR_MMCSD_MASK; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1LR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); + val &= ~U300_SYSCON_PMC1HR_APP_GPIO_1_MASK; + val |= U300_SYSCON_PMC1HR_APP_GPIO_1_MMC; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); +} + +void pmx_set_mission_mode_spi(void) +{ + u16 val; + + /* Set up padmuxing so the SPI port and its chipselects are active */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); + /* + * Activate the SPI port (disable the use of these pins for generic + * GPIO, DSP, AAIF + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_2_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_2_SPI; + /* + * Use GPIO pin SPI CS1 for CS1 actually (it can be used for other + * things also) + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_CS_1_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_CS_1_SPI; + /* + * Use GPIO pin SPI CS2 for CS2 actually (it can be used for other + * things also) + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_CS_2_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_CS_2_SPI; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); +} -- cgit v1.2.3