drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
new file mode 100644
index 000000000000..a400e67f2d43
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h
@@ -0,0 +1,136 @@
+#ifndef __NOUVEAU_I2C_H__
+#define __NOUVEAU_I2C_H__
+
+#include <core/subdev.h>
+#include <core/device.h>
+
+#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
+#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 nouveau_i2c_port {
+	struct nouveau_object base;
+	struct i2c_adapter adapter;
+	struct mutex mutex;
+
+	struct list_head head;
+	u8  index;
+	int aux;
+
+	const struct nouveau_i2c_func *func;
+};
+
+struct nouveau_i2c_func {
+	void (*drive_scl)(struct nouveau_i2c_port *, int);
+	void (*drive_sda)(struct nouveau_i2c_port *, int);
+	int  (*sense_scl)(struct nouveau_i2c_port *);
+	int  (*sense_sda)(struct nouveau_i2c_port *);
+
+	int  (*aux)(struct nouveau_i2c_port *, bool, u8, u32, u8 *, u8);
+	int  (*pattern)(struct nouveau_i2c_port *, int pattern);
+	int  (*lnk_ctl)(struct nouveau_i2c_port *, int nr, int bw, bool enh);
+	int  (*drv_ctl)(struct nouveau_i2c_port *, int lane, int sw, int pe);
+};
+
+struct nouveau_i2c_board_info {
+	struct i2c_board_info dev;
+	u8 udelay; /* set to 0 to use the standard delay */
+};
+
+struct nouveau_i2c {
+	struct nouveau_subdev base;
+	struct nvkm_event event;
+
+	struct nouveau_i2c_port *(*find)(struct nouveau_i2c *, u8 index);
+	struct nouveau_i2c_port *(*find_type)(struct nouveau_i2c *, u16 type);
+	int  (*acquire_pad)(struct nouveau_i2c_port *, unsigned long timeout);
+	void (*release_pad)(struct nouveau_i2c_port *);
+	int  (*acquire)(struct nouveau_i2c_port *, unsigned long timeout);
+	void (*release)(struct nouveau_i2c_port *);
+	int (*identify)(struct nouveau_i2c *, int index,
+			const char *what, struct nouveau_i2c_board_info *,
+			bool (*match)(struct nouveau_i2c_port *,
+				      struct i2c_board_info *, void *), void *);
+
+	wait_queue_head_t wait;
+	struct list_head ports;
+};
+
+static inline struct nouveau_i2c *
+nouveau_i2c(void *obj)
+{
+	return (void *)nouveau_subdev(obj, NVDEV_SUBDEV_I2C);
+}
+
+extern struct nouveau_oclass *nv04_i2c_oclass;
+extern struct nouveau_oclass *nv4e_i2c_oclass;
+extern struct nouveau_oclass *nv50_i2c_oclass;
+extern struct nouveau_oclass *nv94_i2c_oclass;
+extern struct nouveau_oclass *nvd0_i2c_oclass;
+extern struct nouveau_oclass *gf117_i2c_oclass;
+extern struct nouveau_oclass *nve0_i2c_oclass;
+extern struct nouveau_oclass *gm204_i2c_oclass;
+
+static inline int
+nv_rdi2cr(struct nouveau_i2c_port *port, 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(&port->adapter, msgs, 2);
+	if (ret != 2)
+		return -EIO;
+
+	return val;
+}
+
+static inline int
+nv_wri2cr(struct nouveau_i2c_port *port, 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);
+	if (ret != 1)
+		return -EIO;
+
+	return 0;
+}
+
+static inline bool
+nv_probe_i2c(struct nouveau_i2c_port *port, u8 addr)
+{
+	return nv_rdi2cr(port, addr, 0) >= 0;
+}
+
+int nv_rdaux(struct nouveau_i2c_port *, u32 addr, u8 *data, u8 size);
+int nv_wraux(struct nouveau_i2c_port *, u32 addr, u8 *data, u8 size);
+
+#endif