[linux-2.6-block.git] / drivers / gpu / drm / nouveau / include / nvkm / subdev / i2c.h

#ifndef __NVKM_I2C_H__
#define __NVKM_I2C_H__
#include <core/subdev.h>
#include <core/event.h>

#include <subdev/bios.h>
#include <subdev/bios/i2c.h>

struct nvkm_i2c_ntfy_req {
#define NVKM_I2C_PLUG                                                      0x01
#define NVKM_I2C_UNPLUG                                                    0x02
#define NVKM_I2C_IRQ                                                       0x04
#define NVKM_I2C_DONE                                                      0x08
#define NVKM_I2C_ANY                                                       0x0f
	u8 mask;
	u8 port;
};

struct nvkm_i2c_ntfy_rep {
	u8 mask;
};

struct nvkm_i2c_bus_probe {
	struct i2c_board_info dev;
	u8 udelay; /* set to 0 to use the standard delay */
};

struct nvkm_i2c_bus {
	const struct nvkm_i2c_bus_func *func;
	struct nvkm_i2c_pad *pad;
#define NVKM_I2C_BUS_CCB(n) /* 'n' is ccb index */                           (n)
#define NVKM_I2C_BUS_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100)
#define NVKM_I2C_BUS_PRI /* ccb primary comm. port */                        -1
#define NVKM_I2C_BUS_SEC /* ccb secondary comm. port */                      -2
	int id;

	struct mutex mutex;
	struct list_head head;
	struct i2c_adapter i2c;
};

int nvkm_i2c_bus_acquire(struct nvkm_i2c_bus *);
void nvkm_i2c_bus_release(struct nvkm_i2c_bus *);
int nvkm_i2c_bus_probe(struct nvkm_i2c_bus *, const char *,
		       struct nvkm_i2c_bus_probe *,
		       bool (*)(struct nvkm_i2c_bus *,
			        struct i2c_board_info *, void *), void *);

struct nvkm_i2c_aux {
	const struct nvkm_i2c_aux_func *func;
	struct nvkm_i2c_pad *pad;
#define NVKM_I2C_AUX_CCB(n) /* 'n' is ccb index */                           (n)
#define NVKM_I2C_AUX_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100)
	int id;

	struct mutex mutex;
	struct list_head head;
	struct i2c_adapter i2c;

	u32 intr;
};

void nvkm_i2c_aux_monitor(struct nvkm_i2c_aux *, bool monitor);
int nvkm_i2c_aux_acquire(struct nvkm_i2c_aux *);
void nvkm_i2c_aux_release(struct nvkm_i2c_aux *);
int nvkm_i2c_aux_xfer(struct nvkm_i2c_aux *, bool retry, u8 type,
		      u32 addr, u8 *data, u8 size);
int nvkm_i2c_aux_lnk_ctl(struct nvkm_i2c_aux *, int link_nr, int link_bw,
			 bool enhanced_framing);

struct nvkm_i2c {
	const struct nvkm_i2c_func *func;
	struct nvkm_subdev subdev;

	struct list_head pad;
	struct list_head bus;
	struct list_head aux;

	struct nvkm_event event;
};

struct nvkm_i2c_bus *nvkm_i2c_bus_find(struct nvkm_i2c *, int);
struct nvkm_i2c_aux *nvkm_i2c_aux_find(struct nvkm_i2c *, int);

int nv04_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int nv4e_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int nv50_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int g94_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int gf117_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int gf119_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int gk104_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);
int gm200_i2c_new(struct nvkm_device *, int, struct nvkm_i2c **);

static inline int
nvkm_rdi2cr(struct i2c_adapter *adap, u8 addr, u8 reg)
{
	u8 val;
	struct i2c_msg msgs[] = {
		{ .addr = addr, .flags = 0, .len = 1, .buf = &reg },
		{ .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val },
	};

	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	if (ret != 2)
		return -EIO;

	return val;
}

static inline int
nv_rd16i2cr(struct i2c_adapter *adap, u8 addr, u8 reg)
{
	u8 val[2];
	struct i2c_msg msgs[] = {
		{ .addr = addr, .flags = 0, .len = 1, .buf = &reg },
		{ .addr = addr, .flags = I2C_M_RD, .len = 2, .buf = val },
	};

	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	if (ret != 2)
		return -EIO;

	return val[0] << 8 | val[1];
}

static inline int
nvkm_wri2cr(struct i2c_adapter *adap, u8 addr, u8 reg, u8 val)
{
	u8 buf[2] = { reg, val };
	struct i2c_msg msgs[] = {
		{ .addr = addr, .flags = 0, .len = 2, .buf = buf },
	};

	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	if (ret != 1)
		return -EIO;

	return 0;
}

static inline int
nv_wr16i2cr(struct i2c_adapter *adap, u8 addr, u8 reg, u16 val)
{
	u8 buf[3] = { reg, val >> 8, val & 0xff};
	struct i2c_msg msgs[] = {
		{ .addr = addr, .flags = 0, .len = 3, .buf = buf },
	};

	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	if (ret != 1)
		return -EIO;

	return 0;
}

static inline bool
nvkm_probe_i2c(struct i2c_adapter *adap, u8 addr)
{
	return nvkm_rdi2cr(adap, addr, 0) >= 0;
}

static inline int
nvkm_rdaux(struct nvkm_i2c_aux *aux, u32 addr, u8 *data, u8 size)
{
	int ret = nvkm_i2c_aux_acquire(aux);
	if (ret == 0) {
		ret = nvkm_i2c_aux_xfer(aux, true, 9, addr, data, size);
		nvkm_i2c_aux_release(aux);
	}
	return ret;
}

static inline int
nvkm_wraux(struct nvkm_i2c_aux *aux, u32 addr, u8 *data, u8 size)
{
	int ret = nvkm_i2c_aux_acquire(aux);
	if (ret == 0) {
		ret = nvkm_i2c_aux_xfer(aux, true, 8, addr, data, size);
		nvkm_i2c_aux_release(aux);
	}
	return ret;
}
#endif
Commit	Line	Data
b9ec1424 BS	1	#ifndef __NVKM_I2C_H__
b9ec1424 BS	2	#define __NVKM_I2C_H__
4196faa8	3	#include <core/subdev.h>
b9ec1424	4	#include <core/event.h>
4196faa8 BS	5
	6	#include <subdev/bios.h>
	7	#include <subdev/bios/i2c.h>
6ee73861	8
79ca2770 BS	9	struct nvkm_i2c_ntfy_req {
	10	#define NVKM_I2C_PLUG 0x01
	11	#define NVKM_I2C_UNPLUG 0x02
	12	#define NVKM_I2C_IRQ 0x04
	13	#define NVKM_I2C_DONE 0x08
	14	#define NVKM_I2C_ANY 0x0f
	15	u8 mask;
	16	u8 port;
	17	};
	18
	19	struct nvkm_i2c_ntfy_rep {
	20	u8 mask;
3668a339 BS	21	};
3668a339 BS	22
2aa5eac5 BS	23	struct nvkm_i2c_bus_probe {
	24	struct i2c_board_info dev;
	25	u8 udelay; /* set to 0 to use the standard delay */
	26	};
7dcd060c	27
2aa5eac5 BS	28	struct nvkm_i2c_bus {
	29	const struct nvkm_i2c_bus_func *func;
	30	struct nvkm_i2c_pad *pad;
	31	#define NVKM_I2C_BUS_CCB(n) /* 'n' is ccb index */ (n)
	32	#define NVKM_I2C_BUS_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100)
	33	#define NVKM_I2C_BUS_PRI /* ccb primary comm. port */ -1
	34	#define NVKM_I2C_BUS_SEC /* ccb secondary comm. port */ -2
	35	int id;
7dcd060c	36
2aa5eac5 BS	37	struct mutex mutex;
	38	struct list_head head;
	39	struct i2c_adapter i2c;
7dcd060c BS	40	};
7dcd060c BS	41
2aa5eac5 BS	42	int nvkm_i2c_bus_acquire(struct nvkm_i2c_bus *);
	43	void nvkm_i2c_bus_release(struct nvkm_i2c_bus *);
	44	int nvkm_i2c_bus_probe(struct nvkm_i2c_bus , const char ,
	45	struct nvkm_i2c_bus_probe *,
	46	bool ()(struct nvkm_i2c_bus ,
	47	struct i2c_board_info , void ), void *);
7dcd060c	48
2aa5eac5 BS	49	struct nvkm_i2c_aux {
	50	const struct nvkm_i2c_aux_func *func;
	51	struct nvkm_i2c_pad *pad;
	52	#define NVKM_I2C_AUX_CCB(n) /* 'n' is ccb index */ (n)
	53	#define NVKM_I2C_AUX_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100)
	54	int id;
6ee73861	55
2aa5eac5 BS	56	struct mutex mutex;
	57	struct list_head head;
	58	struct i2c_adapter i2c;
	59
	60	u32 intr;
9e2b734f MP	61	};
9e2b734f MP	62
2aa5eac5 BS	63	void nvkm_i2c_aux_monitor(struct nvkm_i2c_aux *, bool monitor);
	64	int nvkm_i2c_aux_acquire(struct nvkm_i2c_aux *);
	65	void nvkm_i2c_aux_release(struct nvkm_i2c_aux *);
	66	int nvkm_i2c_aux_xfer(struct nvkm_i2c_aux *, bool retry, u8 type,
	67	u32 addr, u8 *data, u8 size);
	68	int nvkm_i2c_aux_lnk_ctl(struct nvkm_i2c_aux *, int link_nr, int link_bw,
	69	bool enhanced_framing);
	70
b9ec1424	71	struct nvkm_i2c {
49bd8da5	72	const struct nvkm_i2c_func *func;
5b920d92	73	struct nvkm_subdev subdev;
4196faa8	74
2aa5eac5 BS	75	struct list_head pad;
	76	struct list_head bus;
	77	struct list_head aux;
49bd8da5 BS	78
49bd8da5 BS	79	struct nvkm_event event;
4196faa8 BS	80	};
4196faa8 BS	81
2aa5eac5 BS	82	struct nvkm_i2c_bus nvkm_i2c_bus_find(struct nvkm_i2c , int);
	83	struct nvkm_i2c_aux nvkm_i2c_aux_find(struct nvkm_i2c , int);
	84
49bd8da5 BS	85	int nv04_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	86	int nv4e_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	87	int nv50_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	88	int g94_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	89	int gf117_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	90	int gf119_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
	91	int gk104_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
db1eb528	92	int gm200_i2c_new(struct nvkm_device , int, struct nvkm_i2c *);
6ee73861	93
7dcd060c	94	static inline int
2aa5eac5	95	nvkm_rdi2cr(struct i2c_adapter *adap, u8 addr, u8 reg)
7dcd060c BS	96	{
	97	u8 val;
	98	struct i2c_msg msgs[] = {
	99	{ .addr = addr, .flags = 0, .len = 1, .buf = &reg },
	100	{ .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val },
	101	};
	102
2aa5eac5	103	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
7dcd060c BS	104	if (ret != 2)
	105	return -EIO;
	106
	107	return val;
	108	}
	109
b71c0892 KH	110	static inline int
	111	nv_rd16i2cr(struct i2c_adapter *adap, u8 addr, u8 reg)
	112	{
	113	u8 val[2];
	114	struct i2c_msg msgs[] = {
	115	{ .addr = addr, .flags = 0, .len = 1, .buf = &reg },
	116	{ .addr = addr, .flags = I2C_M_RD, .len = 2, .buf = val },
	117	};
	118
	119	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	120	if (ret != 2)
	121	return -EIO;
	122
	123	return val[0] << 8 \| val[1];
	124	}
	125
7dcd060c	126	static inline int
2aa5eac5	127	nvkm_wri2cr(struct i2c_adapter *adap, u8 addr, u8 reg, u8 val)
7dcd060c BS	128	{
	129	u8 buf[2] = { reg, val };
	130	struct i2c_msg msgs[] = {
	131	{ .addr = addr, .flags = 0, .len = 2, .buf = buf },
	132	};
	133
2aa5eac5	134	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
7dcd060c BS	135	if (ret != 1)
	136	return -EIO;
	137
	138	return 0;
	139	}
	140
b71c0892 KH	141	static inline int
	142	nv_wr16i2cr(struct i2c_adapter *adap, u8 addr, u8 reg, u16 val)
	143	{
	144	u8 buf[3] = { reg, val >> 8, val & 0xff};
	145	struct i2c_msg msgs[] = {
	146	{ .addr = addr, .flags = 0, .len = 3, .buf = buf },
	147	};
	148
	149	int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
	150	if (ret != 1)
	151	return -EIO;
	152
	153	return 0;
	154	}
	155
7dcd060c	156	static inline bool
2aa5eac5 BS	157	nvkm_probe_i2c(struct i2c_adapter *adap, u8 addr)
	158	{
	159	return nvkm_rdi2cr(adap, addr, 0) >= 0;
	160	}
	161
	162	static inline int
	163	nvkm_rdaux(struct nvkm_i2c_aux aux, u32 addr, u8 data, u8 size)
7dcd060c	164	{
2aa5eac5 BS	165	int ret = nvkm_i2c_aux_acquire(aux);
	166	if (ret == 0) {
	167	ret = nvkm_i2c_aux_xfer(aux, true, 9, addr, data, size);
	168	nvkm_i2c_aux_release(aux);
	169	}
	170	return ret;
7dcd060c BS	171	}
7dcd060c BS	172
2aa5eac5 BS	173	static inline int
	174	nvkm_wraux(struct nvkm_i2c_aux aux, u32 addr, u8 data, u8 size)
	175	{
	176	int ret = nvkm_i2c_aux_acquire(aux);
	177	if (ret == 0) {
	178	ret = nvkm_i2c_aux_xfer(aux, true, 8, addr, data, size);
	179	nvkm_i2c_aux_release(aux);
	180	}
	181	return ret;
	182	}
4196faa8	183	#endif