0ed3b2e19d
On certain PMICs, PMIC peripheral drivers like haptics need to read MISC peripheral register. Add support for clients to read it by using qpnp_misc_read_reg(). Change-Id: Id5dfd9e440a8861b56572dab50839d1583535882 Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* Copyright (c) 2013-2014, 2017, The Linux Foundation. All rights reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __QPNP_MISC_H
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#define __QPNP_MISC_H
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#include <linux/errno.h>
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#ifdef CONFIG_QPNP_MISC
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/**
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* qpnp_misc_irqs_available - check if IRQs are available
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*
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* @consumer_dev: device struct
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*
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* This function returns true if the MISC interrupts are available
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* based on a check in the MISC peripheral revision registers.
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*
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* Any consumer of this function needs to reference a MISC device phandle
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* using the "qcom,misc-ref" property in their device tree node.
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*/
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int qpnp_misc_irqs_available(struct device *consumer_dev);
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/**
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* qpnp_misc_read_reg - read register from misc device
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*
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* @node: device node pointer
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* @address: address offset in misc peripheral to be read
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* @val: data read from register
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*
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* This function returns zero if reading the MISC register succeeds.
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*
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*/
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int qpnp_misc_read_reg(struct device_node *node, u16 addr, u8 *val);
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#else
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static inline int qpnp_misc_irqs_available(struct device *consumer_dev)
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{
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return 0;
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}
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static inline int qpnp_misc_read_reg(struct device_node *node, u16 addr,
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u8 *val)
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{
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return 0;
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}
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#endif
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#endif
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