mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-29 22:14:41 +08:00
cc20a38612
This spi driver uses the common spi-bcm-qspi driver and implements iProc SoCs specific interrupt controller. The common driver now calls the SoC handlers when present. Adding support for both muxed l1 and unmuxed interrupt sources. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Signed-off-by: Mark Brown <broonie@kernel.org>
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*
|
|
* Copyright 2016 Broadcom
|
|
*
|
|
* 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 (the "GPL").
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License version 2 (GPLv2) for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* version 2 (GPLv2) along with this source code.
|
|
*/
|
|
|
|
#ifndef __SPI_BCM_QSPI_H__
|
|
#define __SPI_BCM_QSPI_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/io.h>
|
|
|
|
/* BSPI interrupt masks */
|
|
#define INTR_BSPI_LR_OVERREAD_MASK BIT(4)
|
|
#define INTR_BSPI_LR_SESSION_DONE_MASK BIT(3)
|
|
#define INTR_BSPI_LR_IMPATIENT_MASK BIT(2)
|
|
#define INTR_BSPI_LR_SESSION_ABORTED_MASK BIT(1)
|
|
#define INTR_BSPI_LR_FULLNESS_REACHED_MASK BIT(0)
|
|
|
|
#define BSPI_LR_INTERRUPTS_DATA \
|
|
(INTR_BSPI_LR_SESSION_DONE_MASK | \
|
|
INTR_BSPI_LR_FULLNESS_REACHED_MASK)
|
|
|
|
#define BSPI_LR_INTERRUPTS_ERROR \
|
|
(INTR_BSPI_LR_OVERREAD_MASK | \
|
|
INTR_BSPI_LR_IMPATIENT_MASK | \
|
|
INTR_BSPI_LR_SESSION_ABORTED_MASK)
|
|
|
|
#define BSPI_LR_INTERRUPTS_ALL \
|
|
(BSPI_LR_INTERRUPTS_ERROR | \
|
|
BSPI_LR_INTERRUPTS_DATA)
|
|
|
|
/* MSPI Interrupt masks */
|
|
#define INTR_MSPI_HALTED_MASK BIT(6)
|
|
#define INTR_MSPI_DONE_MASK BIT(5)
|
|
|
|
#define MSPI_INTERRUPTS_ALL \
|
|
(INTR_MSPI_DONE_MASK | \
|
|
INTR_MSPI_HALTED_MASK)
|
|
|
|
#define QSPI_INTERRUPTS_ALL \
|
|
(MSPI_INTERRUPTS_ALL | \
|
|
BSPI_LR_INTERRUPTS_ALL)
|
|
|
|
struct platform_device;
|
|
struct dev_pm_ops;
|
|
|
|
enum {
|
|
MSPI_DONE = 0x1,
|
|
BSPI_DONE = 0x2,
|
|
BSPI_ERR = 0x4,
|
|
MSPI_BSPI_DONE = 0x7
|
|
};
|
|
|
|
struct bcm_qspi_soc_intc {
|
|
void (*bcm_qspi_int_ack)(struct bcm_qspi_soc_intc *soc_intc, int type);
|
|
void (*bcm_qspi_int_set)(struct bcm_qspi_soc_intc *soc_intc, int type,
|
|
bool en);
|
|
u32 (*bcm_qspi_get_int_status)(struct bcm_qspi_soc_intc *soc_intc);
|
|
};
|
|
|
|
/* Read controller register*/
|
|
static inline u32 bcm_qspi_readl(bool be, void __iomem *addr)
|
|
{
|
|
if (be)
|
|
return ioread32be(addr);
|
|
else
|
|
return readl_relaxed(addr);
|
|
}
|
|
|
|
/* Write controller register*/
|
|
static inline void bcm_qspi_writel(bool be,
|
|
unsigned int data, void __iomem *addr)
|
|
{
|
|
if (be)
|
|
iowrite32be(data, addr);
|
|
else
|
|
writel_relaxed(data, addr);
|
|
}
|
|
|
|
static inline u32 get_qspi_mask(int type)
|
|
{
|
|
switch (type) {
|
|
case MSPI_DONE:
|
|
return INTR_MSPI_DONE_MASK;
|
|
case BSPI_DONE:
|
|
return BSPI_LR_INTERRUPTS_ALL;
|
|
case MSPI_BSPI_DONE:
|
|
return QSPI_INTERRUPTS_ALL;
|
|
case BSPI_ERR:
|
|
return BSPI_LR_INTERRUPTS_ERROR;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The common driver functions to be called by the SoC platform driver */
|
|
int bcm_qspi_probe(struct platform_device *pdev,
|
|
struct bcm_qspi_soc_intc *soc_intc);
|
|
int bcm_qspi_remove(struct platform_device *pdev);
|
|
|
|
/* pm_ops used by the SoC platform driver called on PM suspend/resume */
|
|
extern const struct dev_pm_ops bcm_qspi_pm_ops;
|
|
|
|
#endif /* __SPI_BCM_QSPI_H__ */
|