linux/drivers/media/platform/ti/omap3isp/ispcsiphy.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * ispcsiphy.c
 *
 * TI OMAP3 ISP - CSI PHY module
 *
 * Copyright (C) 2010 Nokia Corporation
 * Copyright (C) 2009 Texas Instruments, Inc.
 *
 * Contacts: Laurent Pinchart <[email protected]>
 *	     Sakari Ailus <[email protected]>
 */

#include <linux/delay.h>
#include <linux/device.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>

#include "isp.h"
#include "ispreg.h"
#include "ispcsiphy.h"

static void csiphy_routing_cfg_3630(struct isp_csiphy *phy,
				    enum isp_interface_type iface,
				    bool ccp2_strobe)
{ … }

static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on,
				    bool ccp2_strobe)
{ … }

/*
 * Configure OMAP 3 CSI PHY routing.
 * @phy: relevant phy device
 * @iface: ISP_INTERFACE_*
 * @on: power on or off
 * @ccp2_strobe: false: data/clock, true: data/strobe
 *
 * Note that the underlying routing configuration registers are part of the
 * control (SCM) register space and part of the CORE power domain on both 3430
 * and 3630, so they will not hold their contents in off-mode. This isn't an
 * issue since the MPU power domain is forced on whilst the ISP is in use.
 */
static void csiphy_routing_cfg(struct isp_csiphy *phy,
			       enum isp_interface_type iface, bool on,
			       bool ccp2_strobe)
{ … }

/*
 * csiphy_power_autoswitch_enable
 * @enable: Sets or clears the autoswitch function enable flag.
 */
static void csiphy_power_autoswitch_enable(struct isp_csiphy *phy, bool enable)
{ … }

/*
 * csiphy_set_power
 * @power: Power state to be set.
 *
 * Returns 0 if successful, or -EBUSY if the retry count is exceeded.
 */
static int csiphy_set_power(struct isp_csiphy *phy, u32 power)
{ … }

/*
 * TCLK values are OK at their reset values
 */
#define TCLK_TERM …
#define TCLK_MISS …
#define TCLK_SETTLE …

static int omap3isp_csiphy_config(struct isp_csiphy *phy)
{ … }

int omap3isp_csiphy_acquire(struct isp_csiphy *phy, struct media_entity *entity)
{ … }

void omap3isp_csiphy_release(struct isp_csiphy *phy)
{ … }

/*
 * omap3isp_csiphy_init - Initialize the CSI PHY frontends
 */
int omap3isp_csiphy_init(struct isp_device *isp)
{ … }

void omap3isp_csiphy_cleanup(struct isp_device *isp)
{ … }