// SPDX-License-Identifier: GPL-2.0-only
/* OMAP SSI port driver.
*
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
* Copyright (C) 2014 Sebastian Reichel <sre@kernel.org>
*
* Contact: Carlos Chinea <carlos.chinea@nokia.com>
*/
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/debugfs.h>
#include "omap_ssi_regs.h"
#include "omap_ssi.h"
static inline int hsi_dummy_msg(struct hsi_msg *msg __maybe_unused)
{
return 0;
}
static inline int hsi_dummy_cl(struct hsi_client *cl __maybe_unused)
{
return 0;
}
static inline unsigned int ssi_wakein(struct hsi_port *port)
{
struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
return gpiod_get_value(omap_port->wake_gpio);
}
#ifdef CONFIG_DEBUG_FS
static void ssi_debug_remove_port(struct hsi_port *port)
{
struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
debugfs_remove_recursive(omap_port->dir);
}
static int ssi_port_regs_show(struct seq_file *m, void *p __maybe_unused)
{
struct hsi_port *port = m->private;
struct omap_ssi_port *omap_port = hsi_port_drvdata(port);
struct hsi_controller *ssi = to_hsi_controller(port->device.parent);
struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi);
void __iomem *base = omap_ssi->sys;
unsigned int ch;
pm_runtime_get_sync(omap_port->pdev);
if (omap_port->wake_irq > 0)
seq_printf(m, "CAWAKE\t\t: %d\n", ssi_wakein(port));
seq_printf(m, "WAKE\t\t: 0x%08x\n",
readl(base + SSI_WAKE_REG(port->num)));
seq_printf(m, "MPU_ENABLE_IRQ%d\t: 0x%08x\n", 0,
readl(base + SSI_MPU_ENABLE_REG(port->num, 0)));
seq_printf(m, "MPU_STATUS_IRQ%d\t: 0x%08x\n", 