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path: root/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
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Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h')
-rw-r--r--drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h125
1 files changed, 73 insertions, 52 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
index 6b71cb6d5952..ddc7e6e4be60 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
@@ -6,15 +6,6 @@
#include <subdev/bios.h>
#include <subdev/bios/i2c.h>
-#define NV_I2C_PORT(n) (0x00 + (n))
-#define NV_I2C_AUX(n) (0x10 + (n))
-#define NV_I2C_EXT(n) (0x20 + (n))
-#define NV_I2C_DEFAULT(n) (0x80 + (n))
-
-#define NV_I2C_TYPE_DCBI2C(n) (0x0000 | (n))
-#define NV_I2C_TYPE_EXTDDC(e) (0x0005 | (e) << 8)
-#define NV_I2C_TYPE_EXTAUX(e) (0x0006 | (e) << 8)
-
struct nvkm_i2c_ntfy_req {
#define NVKM_I2C_PLUG 0x01
#define NVKM_I2C_UNPLUG 0x02
@@ -29,55 +20,66 @@ struct nvkm_i2c_ntfy_rep {
u8 mask;
};
-struct nvkm_i2c_port {
- struct nvkm_object base;
- struct i2c_adapter adapter;
- struct mutex mutex;
+struct nvkm_i2c_bus_probe {
+ struct i2c_board_info dev;
+ u8 udelay; /* set to 0 to use the standard delay */
+};
- struct list_head head;
- u8 index;
- int aux;
+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;
- const struct nvkm_i2c_func *func;
+ struct mutex mutex;
+ struct list_head head;
+ struct i2c_adapter i2c;
};
-struct nvkm_i2c_func {
- void (*drive_scl)(struct nvkm_i2c_port *, int);
- void (*drive_sda)(struct nvkm_i2c_port *, int);
- int (*sense_scl)(struct nvkm_i2c_port *);
- int (*sense_sda)(struct nvkm_i2c_port *);
+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 *);
- int (*aux)(struct nvkm_i2c_port *, bool, u8, u32, u8 *, u8);
- int (*pattern)(struct nvkm_i2c_port *, int pattern);
- int (*lnk_ctl)(struct nvkm_i2c_port *, int nr, int bw, bool enh);
- int (*drv_ctl)(struct nvkm_i2c_port *, int lane, int sw, int pe);
-};
+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 nvkm_i2c_board_info {
- struct i2c_board_info dev;
- u8 udelay; /* set to 0 to use the standard delay */
+ 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 {
struct nvkm_subdev subdev;
struct nvkm_event event;
- struct nvkm_i2c_port *(*find)(struct nvkm_i2c *, u8 index);
- struct nvkm_i2c_port *(*find_type)(struct nvkm_i2c *, u16 type);
- int (*acquire_pad)(struct nvkm_i2c_port *, unsigned long timeout);
- void (*release_pad)(struct nvkm_i2c_port *);
- int (*acquire)(struct nvkm_i2c_port *, unsigned long timeout);
- void (*release)(struct nvkm_i2c_port *);
- int (*identify)(struct nvkm_i2c *, int index,
- const char *what, struct nvkm_i2c_board_info *,
- bool (*match)(struct nvkm_i2c_port *,
- struct i2c_board_info *, void *),
- void *);
-
- wait_queue_head_t wait;
- struct list_head ports;
+ struct list_head pad;
+ struct list_head bus;
+ struct list_head aux;
};
+struct nvkm_i2c_bus *nvkm_i2c_bus_find(struct nvkm_i2c *, int);
+struct nvkm_i2c_aux *nvkm_i2c_aux_find(struct nvkm_i2c *, int);
+
static inline struct nvkm_i2c *
nvkm_i2c(void *obj)
{
@@ -94,7 +96,7 @@ extern struct nvkm_oclass *gk104_i2c_oclass;
extern struct nvkm_oclass *gm204_i2c_oclass;
static inline int
-nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg)
+nvkm_rdi2cr(struct i2c_adapter *adap, u8 addr, u8 reg)
{
u8 val;
struct i2c_msg msgs[] = {
@@ -102,7 +104,7 @@ nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg)
{ .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val },
};
- int ret = i2c_transfer(&port->adapter, msgs, 2);
+ int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
if (ret != 2)
return -EIO;
@@ -110,14 +112,14 @@ nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg)
}
static inline int
-nv_wri2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg, u8 val)
+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(&port->adapter, msgs, 1);
+ int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs));
if (ret != 1)
return -EIO;
@@ -125,11 +127,30 @@ nv_wri2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg, u8 val)
}
static inline bool
-nv_probe_i2c(struct nvkm_i2c_port *port, u8 addr)
+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)
{
- return nv_rdi2cr(port, addr, 0) >= 0;
+ 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;
}
-int nv_rdaux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size);
-int nv_wraux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size);
+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
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