diff options
Diffstat (limited to 'arch/arm/plat-stmp3xxx/include/mach/pinmux.h')
| -rw-r--r-- | arch/arm/plat-stmp3xxx/include/mach/pinmux.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/arm/plat-stmp3xxx/include/mach/pinmux.h b/arch/arm/plat-stmp3xxx/include/mach/pinmux.h deleted file mode 100644 index cc5af82279ad..000000000000 --- a/arch/arm/plat-stmp3xxx/include/mach/pinmux.h +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Freescale STMP37XX/STMP378X Pin Multiplexing - * - * Author: Vladislav Buzov <vbuzov@embeddedalley.com> - * - * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. - */ - -/* - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ -#ifndef __PINMUX_H -#define __PINMUX_H - -#include <linux/spinlock.h> -#include <linux/types.h> -#include <linux/gpio.h> -#include <asm-generic/gpio.h> - -/* Pin definitions */ -#include "pins.h" -#include <mach/pins.h> - -/* - * Each pin may be routed up to four different HW interfaces - * including GPIO - */ -enum pin_fun { - PIN_FUN1 = 0, - PIN_FUN2, - PIN_FUN3, - PIN_GPIO, -}; - -/* - * Each pin may have different output drive strength in range from - * 4mA to 20mA. The most common case is 4, 8 and 12 mA strengths. - */ -enum pin_strength { - PIN_4MA = 0, - PIN_8MA, - PIN_12MA, - PIN_16MA, - PIN_20MA, -}; - -/* - * Each pin can be programmed for 1.8V or 3.3V - */ -enum pin_voltage { - PIN_1_8V = 0, - PIN_3_3V, -}; - -/* - * Structure to define a group of pins and their parameters - */ -struct pin_desc { - unsigned id; - enum pin_fun fun; - enum pin_strength strength; - enum pin_voltage voltage; - unsigned pullup:1; -}; - -struct pin_group { - struct pin_desc *pins; - int nr_pins; -}; - -/* Set pin drive strength */ -void stmp3xxx_pin_strength(unsigned id, enum pin_strength strength, - const char *label); - -/* Set pin voltage */ -void stmp3xxx_pin_voltage(unsigned id, enum pin_voltage voltage, - const char *label); - -/* Enable pull-up resistor for a pin */ -void stmp3xxx_pin_pullup(unsigned id, int enable, const char *label); - -/* - * Request a pin ownership, only one module (identified by @label) - * may own a pin. - */ -int stmp3xxx_request_pin(unsigned id, enum pin_fun fun, const char *label); - -/* Release pin */ -void stmp3xxx_release_pin(unsigned id, const char *label); - -void stmp3xxx_set_pin_type(unsigned id, enum pin_fun fun); - -/* - * Each bank is associated with a number of registers to control - * pin function, drive strength, voltage and pull-up reigster. The - * number of registers of a given type depends on the number of bits - * describin particular pin. - */ -#define HW_MUXSEL_NUM 2 /* registers per bank */ -#define HW_MUXSEL_PIN_LEN 2 /* bits per pin */ -#define HW_MUXSEL_PIN_NUM 16 /* pins per register */ -#define HW_MUXSEL_PINFUN_MASK 0x3 /* pin function mask */ -#define HW_MUXSEL_PINFUN_NUM 4 /* four options for a pin */ - -#define HW_DRIVE_NUM 4 /* registers per bank */ -#define HW_DRIVE_PIN_LEN 4 /* bits per pin */ -#define HW_DRIVE_PIN_NUM 8 /* pins per register */ -#define HW_DRIVE_PINDRV_MASK 0x3 /* pin strength mask - 2 bits */ -#define HW_DRIVE_PINDRV_NUM 5 /* five possible strength values */ -#define HW_DRIVE_PINV_MASK 0x4 /* pin voltage mask - 1 bit */ - - -struct stmp3xxx_pinmux_bank { - struct gpio_chip chip; - - /* Pins allocation map */ - unsigned long pin_map; - - /* Pin owner names */ - const char *pin_labels[32]; - - /* Bank registers */ - void __iomem *hw_muxsel[HW_MUXSEL_NUM]; - void __iomem *hw_drive[HW_DRIVE_NUM]; - void __iomem *hw_pull; - - void __iomem *pin2irq, - *irqlevel, - *irqpolarity, - *irqen, - *irqstat; - - /* HW MUXSEL register function bit values */ - u8 functions[HW_MUXSEL_PINFUN_NUM]; - - /* - * HW DRIVE register strength bit values: - * 0xff - requested strength is not supported for this bank - */ - u8 strengths[HW_DRIVE_PINDRV_NUM]; - - /* GPIO things */ - void __iomem *hw_gpio_in, - *hw_gpio_out, - *hw_gpio_doe; - int irq, virq; -}; - -int __init stmp3xxx_pinmux_init(int virtual_irq_start); - -#endif /* __PINMUX_H */ |