diff options
author | Mathieu J. Poirier <mathieu.poirier@linaro.org> | 2012-08-03 11:05:12 (GMT) |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 12:58:19 (GMT) |
commit | 84dee301c30d728f97c85f795661804980fb0c77 (patch) | |
tree | 272531d48c7393233c38f3a9b3c0fdbd6ff1d4bf /arch/arm/include/asm/arch-u8500 | |
parent | 77bfa6b4361e72529742ce36693a2adab66890a6 (diff) | |
download | u-boot-fsl-qoriq-84dee301c30d728f97c85f795661804980fb0c77.tar.xz |
snowball: Add support for ux500 based snowball board
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Acked-by: Tom Rini <trini@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Conflicts:
drivers/gpio/Makefile
Diffstat (limited to 'arch/arm/include/asm/arch-u8500')
-rw-r--r-- | arch/arm/include/asm/arch-u8500/db8500_gpio.h | 42 | ||||
-rw-r--r-- | arch/arm/include/asm/arch-u8500/db8500_pincfg.h | 170 |
2 files changed, 212 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-u8500/db8500_gpio.h b/arch/arm/include/asm/arch-u8500/db8500_gpio.h new file mode 100644 index 0000000..7c85a89 --- /dev/null +++ b/arch/arm/include/asm/arch-u8500/db8500_gpio.h @@ -0,0 +1,42 @@ +/* + * Structures and registers for GPIO access in the Nomadik SoC + * + * Code ported from Nomadik GPIO driver in ST-Ericsson Linux kernel code. + * The purpose is that GPIO config found in kernel should work by simply + * copy-paste it to U-boot. + * + * Ported to U-boot by: + * Copyright (C) 2010 Joakim Axelsson <joakim.axelsson AT stericsson.com> + * Copyright (C) 2008 STMicroelectronics + * Author: Prafulla WADASKAR <prafulla.wadaskar@st.com> + * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __DB8500_GPIO_H__ +#define __DB8500_GPIO_H__ + +/* Alternate functions: function C is set in hw by setting both A and B */ +enum db8500_gpio_alt { + DB8500_GPIO_ALT_GPIO = 0, + DB8500_GPIO_ALT_A = 1, + DB8500_GPIO_ALT_B = 2, + DB8500_GPIO_ALT_C = (DB8500_GPIO_ALT_A | DB8500_GPIO_ALT_B) +}; + +enum db8500_gpio_pull { + DB8500_GPIO_PULL_NONE, + DB8500_GPIO_PULL_UP, + DB8500_GPIO_PULL_DOWN +}; + +void db8500_gpio_set_pull(unsigned gpio, enum db8500_gpio_pull pull); +void db8500_gpio_make_input(unsigned gpio); +int db8500_gpio_get_input(unsigned gpio); +void db8500_gpio_make_output(unsigned gpio, int val); +void db8500_gpio_set_output(unsigned gpio, int val); + +#endif /* __DB8500_GPIO_H__ */ diff --git a/arch/arm/include/asm/arch-u8500/db8500_pincfg.h b/arch/arm/include/asm/arch-u8500/db8500_pincfg.h new file mode 100644 index 0000000..6495701 --- /dev/null +++ b/arch/arm/include/asm/arch-u8500/db8500_pincfg.h @@ -0,0 +1,170 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Code ported from Nomadik GPIO driver in ST-Ericsson Linux kernel code. + * The purpose is that GPIO config found in kernel should work by simply + * copy-paste it to U-boot. Ported 2010 to U-boot by: + * Author: Joakim Axelsson <joakim.axelsson AT stericsson.com> + * + * License terms: GNU General Public License, version 2 + * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson + * + * + * Based on arch/arm/mach-pxa/include/mach/mfp.h: + * Copyright (C) 2007 Marvell International Ltd. + * eric miao <eric.miao@marvell.com> + */ + +#ifndef __DB8500_PINCFG_H +#define __DB8500_PINCFG_H + +#include "db8500_gpio.h" + +/* + * U-boot info: + * SLPM (sleep mode) config will be ignored by U-boot but it is still + * possible to configure it in order to keep cut-n-paste compability + * with Linux kernel config. + * + * pin configurations are represented by 32-bit integers: + * + * bit 0.. 8 - Pin Number (512 Pins Maximum) + * bit 9..10 - Alternate Function Selection + * bit 11..12 - Pull up/down state + * bit 13 - Sleep mode behaviour (not used in U-boot) + * bit 14 - Direction + * bit 15 - Value (if output) + * bit 16..18 - SLPM pull up/down state (not used in U-boot) + * bit 19..20 - SLPM direction (not used in U-boot) + * bit 21..22 - SLPM Value (if output) (not used in U-boot) + * + * to facilitate the definition, the following macros are provided + * + * PIN_CFG_DEFAULT - default config (0): + * pull up/down = disabled + * sleep mode = input/wakeup + * direction = input + * value = low + * SLPM direction = same as normal + * SLPM pull = same as normal + * SLPM value = same as normal + * + * PIN_CFG - default config with alternate function + * PIN_CFG_PULL - default config with alternate function and pull up/down + */ + +/* Sleep mode */ +enum db8500_gpio_slpm { + DB8500_GPIO_SLPM_INPUT, + DB8500_GPIO_SLPM_WAKEUP_ENABLE = DB8500_GPIO_SLPM_INPUT, + DB8500_GPIO_SLPM_NOCHANGE, + DB8500_GPIO_SLPM_WAKEUP_DISABLE = DB8500_GPIO_SLPM_NOCHANGE, +}; + +#define PIN_NUM_MASK 0x1ff +#define PIN_NUM(x) ((x) & PIN_NUM_MASK) + +#define PIN_ALT_SHIFT 9 +#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) +#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) +#define PIN_GPIO (DB8500_GPIO_ALT_GPIO << PIN_ALT_SHIFT) +#define PIN_ALT_A (DB8500_GPIO_ALT_A << PIN_ALT_SHIFT) +#define PIN_ALT_B (DB8500_GPIO_ALT_B << PIN_ALT_SHIFT) +#define PIN_ALT_C (DB8500_GPIO_ALT_C << PIN_ALT_SHIFT) + +#define PIN_PULL_SHIFT 11 +#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) +#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) +#define PIN_PULL_NONE (DB8500_GPIO_PULL_NONE << PIN_PULL_SHIFT) +#define PIN_PULL_UP (DB8500_GPIO_PULL_UP << PIN_PULL_SHIFT) +#define PIN_PULL_DOWN (DB8500_GPIO_PULL_DOWN << PIN_PULL_SHIFT) + +#define PIN_SLPM_SHIFT 13 +#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) +#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) +#define PIN_SLPM_MAKE_INPUT (DB8500_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) +#define PIN_SLPM_NOCHANGE (DB8500_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) +/* These two replace the above in DB8500v2+ */ +#define PIN_SLPM_WAKEUP_ENABLE \ + (DB8500_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_WAKEUP_DISABLE \ + (DB8500_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT) + +#define PIN_DIR_SHIFT 14 +#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT) +#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT) +#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT) +#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT) + +#define PIN_VAL_SHIFT 15 +#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT) +#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT) +#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT) +#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT) + +#define PIN_SLPM_PULL_SHIFT 16 +#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL(x) \ + (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_NONE \ + ((1 + DB8500_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_UP \ + ((1 + DB8500_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_DOWN \ + ((1 + DB8500_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT) + +#define PIN_SLPM_DIR_SHIFT 19 +#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR(x) \ + (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT) + +#define PIN_SLPM_VAL_SHIFT 21 +#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL(x) \ + (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT) + +/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */ +#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN) +#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP) +#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE) +#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW) +#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH) + +#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN) +#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP) +#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE) +#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW) +#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH) + +#define PIN_CFG_DEFAULT (0) + +#define PIN_CFG(num, alt) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt)) + +#define PIN_CFG_INPUT(num, alt, pull) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull)) + +#define PIN_CFG_OUTPUT(num, alt, val) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val)) + +#define PIN_CFG_PULL(num, alt, pull) \ + ((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\ + (PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull)) + +/** + * db8500_gpio_config_pins - configure several pins at once + * @cfgs: array of pin configurations + * @num: number of elments in the array + * + * Configures several GPIO pins. + */ +void db8500_gpio_config_pins(unsigned long *cfgs, size_t num); + +#endif |