// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
// Copyright(c) 2015-17 Intel Corporation.
/*
* Soundwire Intel Master Driver
*/
#include <linux/acpi.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/soundwire/sdw_registers.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_intel.h>
#include "cadence_master.h"
#include "bus.h"
#include "intel.h"
/* Intel SHIM Registers Definition */
#define SDW_SHIM_LCAP 0x0
#define SDW_SHIM_LCTL 0x4
#define SDW_SHIM_IPPTR 0x8
#define SDW_SHIM_SYNC 0xC
#define SDW_SHIM_CTLSCAP(x) (0x010 + 0x60 * (x))
#define SDW_SHIM_CTLS0CM(x) (0x012 + 0x60 * (x))
#define SDW_SHIM_CTLS1CM(x) (0x014 + 0x60 * (x))
#define SDW_SHIM_CTLS2CM(x) (0x016 + 0x60 * (x))
#define SDW_SHIM_CTLS3CM(x) (0x018 + 0x60 * (x))
#define SDW_SHIM_PCMSCAP(x) (0x020 + 0x60 * (x))
#define SDW_SHIM_PCMSYCHM(x, y) (0x022 + (0x60 * (x)) + (0x2 * (y)))
#define SDW_SHIM_PCMSYCHC(x, y) (0x042 + (0x60 * (x)) + (0x2 * (y)))
#define SDW_SHIM_PDMSCAP(x) (0x062 + 0x60 * (x))
#define SDW_SHIM_IOCTL(x) (0x06C + 0x60 * (x))
#define SDW_SHIM_CTMCTL(x) (0x06E + 0x60 * (x))
#define SDW_SHIM_WAKEEN 0x190
#define SDW_SHIM_WAKESTS 0x192
#define SDW_SHIM_LCTL_SPA BIT(0)
#define SDW_SHIM_LCTL_CPA BIT(8)
#define SDW_SHIM_SYNC_SYNCPRD_VAL 0x176F
#define SDW_SHIM_SYNC_SYNCPRD GENMASK(14, 0)
#define SDW_SHIM_SYNC_SYNCCPU BIT(15)
#define SDW_SHIM_SYNC_CMDSYNC_MASK GENMASK(19, 16)
#define SDW_SHIM_SYNC_CMDSYNC BIT(16)
#define SDW_SHIM_SYNC_SYNCGO BIT(24)
#define SDW_SHIM_PCMSCAP_ISS GENMASK(3, 0)
#define SDW_SHIM_PCMSCAP_OSS GENMASK(7, 4)
#define SDW_SHIM_PCMSCAP_BSS GENMASK(12, 8)
#define SDW_SHIM_PCMSYCM_LCHN GENMASK(3, 0)
#define SDW_SHIM_PCMSYCM_HCHN GENMASK(7, 4)
#define SDW_SHIM_PCMSYCM_STREAM GENMASK(13, 8)
#define SDW_SHIM_PCMSYCM_DIR BIT(15)
#define SDW_SHIM_PDMSCAP_ISS GENMASK(3, 0)
#define SDW_SHIM_PDMSCAP_OSS GENMASK(7, 4)
#define SDW_SHIM_PDMSCAP_BSS GENMASK(12, 8)
#define SDW_SHIM_PDMSCAP_CPSS GENMASK(15, 13)
#define SDW_SHIM_IOCTL_MIF BIT(0)
#define SDW_SHIM_IOCTL_CO BIT(1)
#define SDW_SHIM_IOCTL_COE BIT(2)
#define SDW_SHIM_IOCTL_DO BIT(3)
#define SDW_SHIM_IOCTL_DOE BIT(4)
#define SDW_SHIM_IOCTL_BKE BIT(5)
#define SDW_SHIM_IOCTL_WPDD BIT(6)
#define SDW_SHIM_IOCTL_CIBD BIT(8)
#define SDW_SHIM_IOCTL_DIBD BIT(9)
#define SDW_SHIM_CTMCTL_DACTQE BIT(0)
#define SDW_SHIM_CTMCTL_DODS BIT(1)
#define SDW_SHIM_CTMCTL_DOAIS GENMASK(4, 3)
#define SDW_SHIM_WAKEEN_ENABLE BIT(0)
#define SDW_SHIM_WAKESTS_STATUS BIT(0)
/* Intel ALH Register definitions */
#define SDW_ALH_STRMZCFG(x) (0x000 + (0x4 * (x)))
#define SDW_ALH_NUM_STREAMS 64
#define SDW_ALH_STRMZCFG_DMAT_VAL 0x3
#define SDW_ALH_STRMZCFG_DMAT GENMASK(7, 0)
#define SDW_ALH_STRMZCFG_CHN GENMASK(19, 16)
#define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1)
enum intel_pdi_type {
INTEL_PDI_IN = 0,
INTEL_PDI_OUT = 1,
INTEL_PDI_BD = 2,
};
struct sdw_intel {
struct sdw_cdns cdns;
int instance;
struct sdw_intel_link_res *res;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
#endif
};
#define cdns_to_intel(_cdns) container_of(_cdns, struct sdw_intel, cdns)
/*
* Read, write helpers for HW registers
*/
static inline int intel_readl(void __iomem *base, int offset)
{
return readl(base + offset);
}
static inline void intel_writel(void __iomem *base, int offset, int value)
{
writel(value, base + offset);
}
static inline u16 intel_readw(void __iomem *base, int offset)
{
return readw(base + offset);
}
static inline void intel_writew(void __iomem *base, int offset, u16 value)
{
writew(value, base + offset);
}
static int intel_clear_bit(void __iomem *base, int offset, u32 value, u32 mask)
{
int timeout = 10;
u32 reg_read;
writel(value, base + offset);
do {
reg_read = readl(base + offset);
if (!(reg_read & mask))
return 0;
timeout--;
udelay(50);
} while (timeout != 0);
return -EAGAIN;
}
static int intel_set_bit(void __iomem *base, int offset, u32 value, u32 mask)
{
int timeout = 10;
u32 reg_read;
writel(value, base + offset);
do {
reg_read = readl(base + offset);
if (reg_read & mask)
return 0;
timeout--;
udelay(50);
} while (timeout != 0);
return -EAGAIN;
}
/*
* debugfs
*/
#ifdef CONFIG_DEBUG_FS
#define RD_BUF (2 * PAGE_SIZE)
static ssize_t intel_sprintf(void __iomem *mem, bool l,
char *buf, size_t pos, unsigned int reg)
{
int value;
if (l)
value = intel_readl(mem, reg);
else
value = intel_readw(mem, reg);
return scnprintf(buf + pos, RD_BUF - pos, "%4x\t%4x\n", reg, value);
}
static int intel_reg_show(struct seq_file *s_file, void *data)
{
struct sdw_intel *sdw = s_file->private