// SPDX-License-Identifier: GPL-2.0
/*
* Renesas SDHI
*
* Copyright (C) 2015-19 Renesas Electronics Corporation
* Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2009 Magnus Damm
*
* Based on "Compaq ASIC3 support":
*
* Copyright 2001 Compaq Computer Corporation.
* Copyright 2004-2005 Phil Blundell
* Copyright 2007-2008 OpenedHand Ltd.
*
* Authors: Phil Blundell <pb@handhelds.org>,
* Samuel Ortiz <sameo@openedhand.com>
*
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/module.h>
#include <linux/mux/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/pinctrl-state.h>
#include <linux/platform_data/tmio.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/reset.h>
#include <linux/sh_dma.h>
#include <linux/slab.h>
#include "renesas_sdhi.h"
#include "tmio_mmc.h"
#define CTL_HOST_MODE 0xe4
#define HOST_MODE_GEN2_SDR50_WMODE BIT(0)
#define HOST_MODE_GEN2_SDR104_WMODE BIT(0)
#define HOST_MODE_GEN3_WMODE BIT(0)
#define HOST_MODE_GEN3_BUSWIDTH BIT(8)
#define HOST_MODE_GEN3_16BIT HOST_MODE_GEN3_WMODE
#define HOST_MODE_GEN3_32BIT (HOST_MODE_GEN3_WMODE | HOST_MODE_GEN3_BUSWIDTH)
#define HOST_MODE_GEN3_64BIT 0
#define SDHI_VER_GEN2_SDR50 0x490c
#define SDHI_VER_RZ_A1 0x820b
/* very old datasheets said 0x490c for SDR104, too. They are wrong! */
#define SDHI_VER_GEN2_SDR104 0xcb0d
#define SDHI_VER_GEN3_SD 0xcc10
#define SDHI_VER_GEN3_SDMMC 0xcd10
#define SDHI_GEN3_MMC0_ADDR 0xee140000
static void renesas_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width)
{
u32 val;
/*
* see also
* renesas_sdhi_of_data :: dma_buswidth
*/
switch (sd_ctrl_read16(host, CTL_VERSION)) {
case SDHI_VER_GEN2_SDR50:
val = (width == 32) ? HOST_MODE_GEN2_SDR50_WMODE : 0;
break;
case SDHI_VER_GEN2_SDR104:
val = (width == 32) ? 0 : HOST_MODE_GEN2_SDR104_WMODE;
break;
case SDHI_VER_GEN3_SD:
case SDHI_VER_GEN3_SDMMC:
if (width == 64)
val = HOST_MODE_GEN3_64BIT;
else if (width == 32)
val = HOST_MODE_GEN3_32BIT;
else
val = HOST_MODE_GEN3_16BIT;
break;
