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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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fb14159755
This patch allows UCB1400 to get IRQ GPIO from platform data. In case platform_data are not supplied or the IRQ supplied in the platform_data is negative, fall back to the old IRQ detection algorithm. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
174 lines
4.4 KiB
C
174 lines
4.4 KiB
C
/*
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* Register definitions and functions for:
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* Philips UCB1400 driver
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*
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* Based on ucb1400_ts:
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* Author: Nicolas Pitre
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* Created: September 25, 2006
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* Copyright: MontaVista Software, Inc.
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*
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* Spliting done by: Marek Vasut <marek.vasut@gmail.com>
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* If something doesnt work and it worked before spliting, e-mail me,
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* dont bother Nicolas please ;-)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This code is heavily based on ucb1x00-*.c copyrighted by Russell King
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* covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
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* been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
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*/
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#ifndef _LINUX__UCB1400_H
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#define _LINUX__UCB1400_H
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#include <sound/ac97_codec.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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/*
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* UCB1400 AC-link registers
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*/
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#define UCB_IO_DATA 0x5a
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#define UCB_IO_DIR 0x5c
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#define UCB_IE_RIS 0x5e
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#define UCB_IE_FAL 0x60
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#define UCB_IE_STATUS 0x62
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#define UCB_IE_CLEAR 0x62
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#define UCB_IE_ADC (1 << 11)
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#define UCB_IE_TSPX (1 << 12)
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#define UCB_TS_CR 0x64
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#define UCB_TS_CR_TSMX_POW (1 << 0)
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#define UCB_TS_CR_TSPX_POW (1 << 1)
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#define UCB_TS_CR_TSMY_POW (1 << 2)
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#define UCB_TS_CR_TSPY_POW (1 << 3)
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#define UCB_TS_CR_TSMX_GND (1 << 4)
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#define UCB_TS_CR_TSPX_GND (1 << 5)
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#define UCB_TS_CR_TSMY_GND (1 << 6)
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#define UCB_TS_CR_TSPY_GND (1 << 7)
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#define UCB_TS_CR_MODE_INT (0 << 8)
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#define UCB_TS_CR_MODE_PRES (1 << 8)
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#define UCB_TS_CR_MODE_POS (2 << 8)
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#define UCB_TS_CR_BIAS_ENA (1 << 11)
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#define UCB_TS_CR_TSPX_LOW (1 << 12)
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#define UCB_TS_CR_TSMX_LOW (1 << 13)
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#define UCB_ADC_CR 0x66
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#define UCB_ADC_SYNC_ENA (1 << 0)
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#define UCB_ADC_VREFBYP_CON (1 << 1)
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#define UCB_ADC_INP_TSPX (0 << 2)
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#define UCB_ADC_INP_TSMX (1 << 2)
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#define UCB_ADC_INP_TSPY (2 << 2)
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#define UCB_ADC_INP_TSMY (3 << 2)
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#define UCB_ADC_INP_AD0 (4 << 2)
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#define UCB_ADC_INP_AD1 (5 << 2)
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#define UCB_ADC_INP_AD2 (6 << 2)
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#define UCB_ADC_INP_AD3 (7 << 2)
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#define UCB_ADC_EXT_REF (1 << 5)
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#define UCB_ADC_START (1 << 7)
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#define UCB_ADC_ENA (1 << 15)
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#define UCB_ADC_DATA 0x68
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#define UCB_ADC_DAT_VALID (1 << 15)
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#define UCB_FCSR 0x6c
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#define UCB_FCSR_AVE (1 << 12)
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#define UCB_ADC_DAT_MASK 0x3ff
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#define UCB_ID 0x7e
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#define UCB_ID_1400 0x4304
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struct ucb1400_gpio_data {
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int gpio_offset;
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int (*gpio_setup)(struct device *dev, int ngpio);
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int (*gpio_teardown)(struct device *dev, int ngpio);
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};
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struct ucb1400_gpio {
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struct gpio_chip gc;
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struct snd_ac97 *ac97;
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};
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struct ucb1400_ts {
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struct input_dev *ts_idev;
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struct task_struct *ts_task;
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int id;
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wait_queue_head_t ts_wait;
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unsigned int ts_restart:1;
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int irq;
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unsigned int irq_pending; /* not bit field shared */
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struct snd_ac97 *ac97;
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};
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struct ucb1400 {
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struct platform_device *ucb1400_ts;
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struct platform_device *ucb1400_gpio;
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};
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struct ucb1400_pdata {
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int irq;
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};
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static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
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{
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return ac97->bus->ops->read(ac97, reg);
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}
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static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
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{
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ac97->bus->ops->write(ac97, reg, val);
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}
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static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
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{
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return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
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}
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static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
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u16 val)
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{
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ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
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ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
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ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
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}
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static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
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{
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return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
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}
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static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
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u16 dir)
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{
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ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
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ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
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ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
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}
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static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
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{
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ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
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}
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static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
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{
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ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
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}
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unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
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int adcsync);
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#ifdef CONFIG_GPIO_UCB1400
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void __init ucb1400_gpio_set_data(struct ucb1400_gpio_data *data);
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#else
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static inline void ucb1400_gpio_set_data(struct ucb1400_gpio_data *data) {}
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#endif
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#endif
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