// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
* All rights reserved.
*/
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/host.h>
#include "wilc_wfi_netdevice.h"
#define SDIO_MODALIAS "wilc1000_sdio"
#define SDIO_VENDOR_ID_WILC 0x0296
#define SDIO_DEVICE_ID_WILC 0x5347
static const struct sdio_device_id wilc_sdio_ids[] = {
{ SDIO_DEVICE(SDIO_VENDOR_ID_WILC, SDIO_DEVICE_ID_WILC) },
{ },
};
#define WILC_SDIO_BLOCK_SIZE 512
struct wilc_sdio {
bool irq_gpio;
u32 block_size;
int nint;
/* Max num interrupts allowed in registers 0xf7, 0xf8 */
#define MAX_NUN_INT_THRPT_ENH2 (5)
int has_thrpt_enh3;
};
struct sdio_cmd52 {
u32 read_write: 1;
u32 function: 3;
u32 raw: 1;
u32 address: 17;
u32 data: 8;
};
struct sdio_cmd53 {
u32 read_write: 1;
u32 function: 3;
u32 block_mode: 1;
u32 increment: 1;
u32 address: 17;
u32 count: 9;
u8 *buffer;
u32 block_size;
};
static const struct wilc_hif_func wilc_hif_sdio;
static int sdio_write_reg(struct wilc *wilc, u32 addr, u32 data);
static int sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data);
static int sdio_init(struct wilc *wilc, bool resume);
static void wilc_sdio_interrupt(struct sdio_func *func)
{
sdio_release_host(func);
wilc_handle_isr(sdio_get_drvdata(func));
sdio_claim_host(func);
}
static int wilc_sdio_cmd52(struct wilc *wilc, struct sdio_cmd52 *cmd)
{
struct sdio_func *func = container_of(wilc->dev, struct sdio_func, dev);
int ret;
u8 data;
sdio_claim_host(func);
func->num = cmd->function;
if (cmd->read_write) { /* write */
if (cmd->raw) {
sdio_writeb(func, cmd->data, cmd->address, &ret);
data = sdio_readb(func, cmd->address, &ret);
cmd->data = data;
} else {
sdio_writeb(func, cmd->data, cmd->address, &ret);
}
} else { /* read */
data = sdio_readb(func, cmd->address, &ret);
cmd->data = data;
}
sdio_release_host(func);
if (ret)
dev_err(&func->dev, "%s..failed, err(%d)\n", __func__, ret);
return ret;
}
static int wilc_sdio_cmd53(struct wilc *wilc, struct sdio_cmd53 *cmd)
{
struct sdio_func *func = container_of(wilc->dev, struct sdio_func, dev);
int size, ret;
sdio_claim_host(func);
func->num = cmd->function;
func->cur_blksize = cmd->block_size;
if (cmd->block_mode)
size = cmd->count * cmd->block_size;
else
size = cmd