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linux/include/sound/wm8903.h
Stephen Warren a0f203d384 ASoC: WM8903: Fix platform data gpio_cfg confusion 
wm8903_platform_data.gpio_cfg[] was intended to be interpreted as follows:
0:       Don't touch this GPIO's configuration register
1..7fff: Write that value to the GPIO's configuration register
8000:    Write zero to the GPIO's configuration register
other:   Undefined (invalid)

The rationale is that platform data is usually global data, and a value of
zero means that the field wasn't explicitly set to anything (e.g. because
the field was new to the pdata type, and existing users weren't update to
initialize it) and hence the value zero should be ignored. 0x8000 is an
explicit way to get 0 in the register.

The code worked this way until commit 7cfe561 "ASoC: wm8903: Expose GPIOs
through gpiolib", where the behaviour was changed due to my lack of
awareness of the above rationale.

This patch reverts to the intended behaviour, and updates all in-tree users
to use the correct scheme. This also makes WM8903 consistent with other
devices that use a similar scheme.

WM8903_GPIO_NO_CONFIG is also renamed to WM8903_GPIO_CONFIG_ZERO so that
its name accurately reflects its purpose.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Colin Cross <ccross@android.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-06 10:29:22 +00:00

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/*
* linux/sound/wm8903.h -- Platform data for WM8903
*
* Copyright 2010 Wolfson Microelectronics. PLC.
*
* 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 __LINUX_SND_WM8903_H
#define __LINUX_SND_WM8903_H
/*
* Used to enable configuration of a GPIO to all zeros; a gpio_cfg value of
* zero in platform data means "don't touch this pin".
*/
#define WM8903_GPIO_CONFIG_ZERO 0x8000
/*
* R6 (0x06) - Mic Bias Control 0
*/
#define WM8903_MICDET_THR_MASK 0x0030 /* MICDET_THR - [5:4] */
#define WM8903_MICDET_THR_SHIFT 4 /* MICDET_THR - [5:4] */
#define WM8903_MICDET_THR_WIDTH 2 /* MICDET_THR - [5:4] */
#define WM8903_MICSHORT_THR_MASK 0x000C /* MICSHORT_THR - [3:2] */
#define WM8903_MICSHORT_THR_SHIFT 2 /* MICSHORT_THR - [3:2] */
#define WM8903_MICSHORT_THR_WIDTH 2 /* MICSHORT_THR - [3:2] */
#define WM8903_MICDET_ENA 0x0002 /* MICDET_ENA */
#define WM8903_MICDET_ENA_MASK 0x0002 /* MICDET_ENA */
#define WM8903_MICDET_ENA_SHIFT 1 /* MICDET_ENA */
#define WM8903_MICDET_ENA_WIDTH 1 /* MICDET_ENA */
#define WM8903_MICBIAS_ENA 0x0001 /* MICBIAS_ENA */
#define WM8903_MICBIAS_ENA_MASK 0x0001 /* MICBIAS_ENA */
#define WM8903_MICBIAS_ENA_SHIFT 0 /* MICBIAS_ENA */
#define WM8903_MICBIAS_ENA_WIDTH 1 /* MICBIAS_ENA */
/*
* WM8903_GPn_FN values
*
* See datasheets for list of valid values per pin
*/
#define WM8903_GPn_FN_GPIO_OUTPUT 0
#define WM8903_GPn_FN_BCLK 1
#define WM8903_GPn_FN_IRQ_OUTPT 2
#define WM8903_GPn_FN_GPIO_INPUT 3
#define WM8903_GPn_FN_MICBIAS_CURRENT_DETECT 4
#define WM8903_GPn_FN_MICBIAS_SHORT_DETECT 5
#define WM8903_GPn_FN_DMIC_LR_CLK_OUTPUT 6
#define WM8903_GPn_FN_FLL_LOCK_OUTPUT 8
#define WM8903_GPn_FN_FLL_CLOCK_OUTPUT 9
/*
* R116 (0x74) - GPIO Control 1
*/
#define WM8903_GP1_FN_MASK 0x1F00 /* GP1_FN - [12:8] */
#define WM8903_GP1_FN_SHIFT 8 /* GP1_FN - [12:8] */
#define WM8903_GP1_FN_WIDTH 5 /* GP1_FN - [12:8] */
#define WM8903_GP1_DIR 0x0080 /* GP1_DIR */
#define WM8903_GP1_DIR_MASK 0x0080 /* GP1_DIR */
#define WM8903_GP1_DIR_SHIFT 7 /* GP1_DIR */
#define WM8903_GP1_DIR_WIDTH 1 /* GP1_DIR */
#define WM8903_GP1_OP_CFG 0x0040 /* GP1_OP_CFG */
#define WM8903_GP1_OP_CFG_MASK 0x0040 /* GP1_OP_CFG */
#define WM8903_GP1_OP_CFG_SHIFT 6 /* GP1_OP_CFG */
#define WM8903_GP1_OP_CFG_WIDTH 1 /* GP1_OP_CFG */
#define WM8903_GP1_IP_CFG 0x0020 /* GP1_IP_CFG */
#define WM8903_GP1_IP_CFG_MASK 0x0020 /* GP1_IP_CFG */
#define WM8903_GP1_IP_CFG_SHIFT 5 /* GP1_IP_CFG */
#define WM8903_GP1_IP_CFG_WIDTH 1 /* GP1_IP_CFG */
#define WM8903_GP1_LVL 0x0010 /* GP1_LVL */
#define WM8903_GP1_LVL_MASK 0x0010 /* GP1_LVL */
#define WM8903_GP1_LVL_SHIFT 4 /* GP1_LVL */
#define WM8903_GP1_LVL_WIDTH 1 /* GP1_LVL */
#define WM8903_GP1_PD 0x0008 /* GP1_PD */
#define WM8903_GP1_PD_MASK 0x0008 /* GP1_PD */
#define WM8903_GP1_PD_SHIFT 3 /* GP1_PD */
#define WM8903_GP1_PD_WIDTH 1 /* GP1_PD */
#define WM8903_GP1_PU 0x0004 /* GP1_PU */
#define WM8903_GP1_PU_MASK 0x0004 /* GP1_PU */
#define WM8903_GP1_PU_SHIFT 2 /* GP1_PU */
#define WM8903_GP1_PU_WIDTH 1 /* GP1_PU */
#define WM8903_GP1_INTMODE 0x0002 /* GP1_INTMODE */
#define WM8903_GP1_INTMODE_MASK 0x0002 /* GP1_INTMODE */
#define WM8903_GP1_INTMODE_SHIFT 1 /* GP1_INTMODE */
#define WM8903_GP1_INTMODE_WIDTH 1 /* GP1_INTMODE */
#define WM8903_GP1_DB 0x0001 /* GP1_DB */
#define WM8903_GP1_DB_MASK 0x0001 /* GP1_DB */
#define WM8903_GP1_DB_SHIFT 0 /* GP1_DB */
#define WM8903_GP1_DB_WIDTH 1 /* GP1_DB */
/*
* R117 (0x75) - GPIO Control 2
*/
#define WM8903_GP2_FN_MASK 0x1F00 /* GP2_FN - [12:8] */
#define WM8903_GP2_FN_SHIFT 8 /* GP2_FN - [12:8] */
#define WM8903_GP2_FN_WIDTH 5 /* GP2_FN - [12:8] */
#define WM8903_GP2_DIR 0x0080 /* GP2_DIR */
#define WM8903_GP2_DIR_MASK 0x0080 /* GP2_DIR */
#define WM8903_GP2_DIR_SHIFT 7 /* GP2_DIR */
#define WM8903_GP2_DIR_WIDTH 1 /* GP2_DIR */
#define WM8903_GP2_OP_CFG 0x0040 /* GP2_OP_CFG */
#define WM8903_GP2_OP_CFG_MASK 0x0040 /* GP2_OP_CFG */
#define WM8903_GP2_OP_CFG_SHIFT 6 /* GP2_OP_CFG */
#define WM8903_GP2_OP_CFG_WIDTH 1 /* GP2_OP_CFG */
#define WM8903_GP2_IP_CFG 0x0020 /* GP2_IP_CFG */
#define WM8903_GP2_IP_CFG_MASK 0x0020 /* GP2_IP_CFG */
#define WM8903_GP2_IP_CFG_SHIFT 5 /* GP2_IP_CFG */
#define WM8903_GP2_IP_CFG_WIDTH 1 /* GP2_IP_CFG */
#define WM8903_GP2_LVL 0x0010 /* GP2_LVL */
#define WM8903_GP2_LVL_MASK 0x0010 /* GP2_LVL */
#define WM8903_GP2_LVL_SHIFT 4 /* GP2_LVL */
#define WM8903_GP2_LVL_WIDTH 1 /* GP2_LVL */
#define WM8903_GP2_PD 0x0008 /* GP2_PD */
#define WM8903_GP2_PD_MASK 0x0008 /* GP2_PD */
#define WM8903_GP2_PD_SHIFT 3 /* GP2_PD */
#define WM8903_GP2_PD_WIDTH 1 /* GP2_PD */
#define WM8903_GP2_PU 0x0004 /* GP2_PU */
#define WM8903_GP2_PU_MASK 0x0004 /* GP2_PU */
#define WM8903_GP2_PU_SHIFT 2 /* GP2_PU */
#define WM8903_GP2_PU_WIDTH 1 /* GP2_PU */
#define WM8903_GP2_INTMODE 0x0002 /* GP2_INTMODE */
#define WM8903_GP2_INTMODE_MASK 0x0002 /* GP2_INTMODE */
#define WM8903_GP2_INTMODE_SHIFT 1 /* GP2_INTMODE */
#define WM8903_GP2_INTMODE_WIDTH 1 /* GP2_INTMODE */
#define WM8903_GP2_DB 0x0001 /* GP2_DB */
#define WM8903_GP2_DB_MASK 0x0001 /* GP2_DB */
#define WM8903_GP2_DB_SHIFT 0 /* GP2_DB */
#define WM8903_GP2_DB_WIDTH 1 /* GP2_DB */
/*
* R118 (0x76) - GPIO Control 3
*/
#define WM8903_GP3_FN_MASK 0x1F00 /* GP3_FN - [12:8] */
#define WM8903_GP3_FN_SHIFT 8 /* GP3_FN - [12:8] */
#define WM8903_GP3_FN_WIDTH 5 /* GP3_FN - [12:8] */
#define WM8903_GP3_DIR 0x0080 /* GP3_DIR */
#define WM8903_GP3_DIR_MASK 0x0080 /* GP3_DIR */
#define WM8903_GP3_DIR_SHIFT 7 /* GP3_DIR */
#define WM8903_GP3_DIR_WIDTH 1 /* GP3_DIR */
#define WM8903_GP3_OP_CFG 0x0040 /* GP3_OP_CFG */
#define WM8903_GP3_OP_CFG_MASK 0x0040 /* GP3_OP_CFG */
#define WM8903_GP3_OP_CFG_SHIFT 6 /* GP3_OP_CFG */
#define WM8903_GP3_OP_CFG_WIDTH 1 /* GP3_OP_CFG */
#define WM8903_GP3_IP_CFG 0x0020 /* GP3_IP_CFG */
#define WM8903_GP3_IP_CFG_MASK 0x0020 /* GP3_IP_CFG */
#define WM8903_GP3_IP_CFG_SHIFT 5 /* GP3_IP_CFG */
#define WM8903_GP3_IP_CFG_WIDTH 1 /* GP3_IP_CFG */
#define WM8903_GP3_LVL 0x0010 /* GP3_LVL */
#define WM8903_GP3_LVL_MASK 0x0010 /* GP3_LVL */
#define WM8903_GP3_LVL_SHIFT 4 /* GP3_LVL */
#define WM8903_GP3_LVL_WIDTH 1 /* GP3_LVL */
#define WM8903_GP3_PD 0x0008 /* GP3_PD */
#define WM8903_GP3_PD_MASK 0x0008 /* GP3_PD */
#define WM8903_GP3_PD_SHIFT 3 /* GP3_PD */
#define WM8903_GP3_PD_WIDTH 1 /* GP3_PD */
#define WM8903_GP3_PU 0x0004 /* GP3_PU */
#define WM8903_GP3_PU_MASK 0x0004 /* GP3_PU */
#define WM8903_GP3_PU_SHIFT 2 /* GP3_PU */
#define WM8903_GP3_PU_WIDTH 1 /* GP3_PU */
#define WM8903_GP3_INTMODE 0x0002 /* GP3_INTMODE */
#define WM8903_GP3_INTMODE_MASK 0x0002 /* GP3_INTMODE */
#define WM8903_GP3_INTMODE_SHIFT 1 /* GP3_INTMODE */
#define WM8903_GP3_INTMODE_WIDTH 1 /* GP3_INTMODE */
#define WM8903_GP3_DB 0x0001 /* GP3_DB */
#define WM8903_GP3_DB_MASK 0x0001 /* GP3_DB */
#define WM8903_GP3_DB_SHIFT 0 /* GP3_DB */
#define WM8903_GP3_DB_WIDTH 1 /* GP3_DB */
/*
* R119 (0x77) - GPIO Control 4
*/
#define WM8903_GP4_FN_MASK 0x1F00 /* GP4_FN - [12:8] */
#define WM8903_GP4_FN_SHIFT 8 /* GP4_FN - [12:8] */
#define WM8903_GP4_FN_WIDTH 5 /* GP4_FN - [12:8] */
#define WM8903_GP4_DIR 0x0080 /* GP4_DIR */
#define WM8903_GP4_DIR_MASK 0x0080 /* GP4_DIR */
#define WM8903_GP4_DIR_SHIFT 7 /* GP4_DIR */
#define WM8903_GP4_DIR_WIDTH 1 /* GP4_DIR */
#define WM8903_GP4_OP_CFG 0x0040 /* GP4_OP_CFG */
#define WM8903_GP4_OP_CFG_MASK 0x0040 /* GP4_OP_CFG */
#define WM8903_GP4_OP_CFG_SHIFT 6 /* GP4_OP_CFG */
#define WM8903_GP4_OP_CFG_WIDTH 1 /* GP4_OP_CFG */
#define WM8903_GP4_IP_CFG 0x0020 /* GP4_IP_CFG */
#define WM8903_GP4_IP_CFG_MASK 0x0020 /* GP4_IP_CFG */
#define WM8903_GP4_IP_CFG_SHIFT 5 /* GP4_IP_CFG */
#define WM8903_GP4_IP_CFG_WIDTH 1 /* GP4_IP_CFG */
#define WM8903_GP4_LVL 0x0010 /* GP4_LVL */
#define WM8903_GP4_LVL_MASK 0x0010 /* GP4_LVL */
#define WM8903_GP4_LVL_SHIFT 4 /* GP4_LVL */
#define WM8903_GP4_LVL_WIDTH 1 /* GP4_LVL */
#define WM8903_GP4_PD 0x0008 /* GP4_PD */
#define WM8903_GP4_PD_MASK 0x0008 /* GP4_PD */
#define WM8903_GP4_PD_SHIFT 3 /* GP4_PD */
#define WM8903_GP4_PD_WIDTH 1 /* GP4_PD */
#define WM8903_GP4_PU 0x0004 /* GP4_PU */
#define WM8903_GP4_PU_MASK 0x0004 /* GP4_PU */
#define WM8903_GP4_PU_SHIFT 2 /* GP4_PU */
#define WM8903_GP4_PU_WIDTH 1 /* GP4_PU */
#define WM8903_GP4_INTMODE 0x0002 /* GP4_INTMODE */
#define WM8903_GP4_INTMODE_MASK 0x0002 /* GP4_INTMODE */
#define WM8903_GP4_INTMODE_SHIFT 1 /* GP4_INTMODE */
#define WM8903_GP4_INTMODE_WIDTH 1 /* GP4_INTMODE */
#define WM8903_GP4_DB 0x0001 /* GP4_DB */
#define WM8903_GP4_DB_MASK 0x0001 /* GP4_DB */
#define WM8903_GP4_DB_SHIFT 0 /* GP4_DB */
#define WM8903_GP4_DB_WIDTH 1 /* GP4_DB */
/*
* R120 (0x78) - GPIO Control 5
*/
#define WM8903_GP5_FN_MASK 0x1F00 /* GP5_FN - [12:8] */
#define WM8903_GP5_FN_SHIFT 8 /* GP5_FN - [12:8] */
#define WM8903_GP5_FN_WIDTH 5 /* GP5_FN - [12:8] */
#define WM8903_GP5_DIR 0x0080 /* GP5_DIR */
#define WM8903_GP5_DIR_MASK 0x0080 /* GP5_DIR */
#define WM8903_GP5_DIR_SHIFT 7 /* GP5_DIR */
#define WM8903_GP5_DIR_WIDTH 1 /* GP5_DIR */
#define WM8903_GP5_OP_CFG 0x0040 /* GP5_OP_CFG */
#define WM8903_GP5_OP_CFG_MASK 0x0040 /* GP5_OP_CFG */
#define WM8903_GP5_OP_CFG_SHIFT 6 /* GP5_OP_CFG */
#define WM8903_GP5_OP_CFG_WIDTH 1 /* GP5_OP_CFG */
#define WM8903_GP5_IP_CFG 0x0020 /* GP5_IP_CFG */
#define WM8903_GP5_IP_CFG_MASK 0x0020 /* GP5_IP_CFG */
#define WM8903_GP5_IP_CFG_SHIFT 5 /* GP5_IP_CFG */
#define WM8903_GP5_IP_CFG_WIDTH 1 /* GP5_IP_CFG */
#define WM8903_GP5_LVL 0x0010 /* GP5_LVL */
#define WM8903_GP5_LVL_MASK 0x0010 /* GP5_LVL */
#define WM8903_GP5_LVL_SHIFT 4 /* GP5_LVL */
#define WM8903_GP5_LVL_WIDTH 1 /* GP5_LVL */
#define WM8903_GP5_PD 0x0008 /* GP5_PD */
#define WM8903_GP5_PD_MASK 0x0008 /* GP5_PD */
#define WM8903_GP5_PD_SHIFT 3 /* GP5_PD */
#define WM8903_GP5_PD_WIDTH 1 /* GP5_PD */
#define WM8903_GP5_PU 0x0004 /* GP5_PU */
#define WM8903_GP5_PU_MASK 0x0004 /* GP5_PU */
#define WM8903_GP5_PU_SHIFT 2 /* GP5_PU */
#define WM8903_GP5_PU_WIDTH 1 /* GP5_PU */
#define WM8903_GP5_INTMODE 0x0002 /* GP5_INTMODE */
#define WM8903_GP5_INTMODE_MASK 0x0002 /* GP5_INTMODE */
#define WM8903_GP5_INTMODE_SHIFT 1 /* GP5_INTMODE */
#define WM8903_GP5_INTMODE_WIDTH 1 /* GP5_INTMODE */
#define WM8903_GP5_DB 0x0001 /* GP5_DB */
#define WM8903_GP5_DB_MASK 0x0001 /* GP5_DB */
#define WM8903_GP5_DB_SHIFT 0 /* GP5_DB */
#define WM8903_GP5_DB_WIDTH 1 /* GP5_DB */
#define WM8903_NUM_GPIO 5
struct wm8903_platform_data {
bool irq_active_low; /* Set if IRQ active low, default high */
/* Default register value for R6 (Mic bias), used to configure
* microphone detection. In conjunction with gpio_cfg this
* can be used to route the microphone status signals out onto
* the GPIOs for use with snd_soc_jack_add_gpios().
*/
u16 micdet_cfg;
int micdet_delay; /* Delay after microphone detection (ms) */
int gpio_base;
u32 gpio_cfg[WM8903_NUM_GPIO]; /* Default register values for GPIO pin mux */
};
#endif
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