subdev/i2c/nouveau_nvkm_subdev_i2c_pad.c

29 #include "pad.h"
34 nvkm_i2c_pad_mode_locked(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
36 	PAD_TRACE(pad, "-> %s", (mode == NVKM_I2C_PAD_AUX) ? "aux" :
38 	if (pad->func->mode)
39 		pad->func->mode(pad, mode);
43 nvkm_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
45 	PAD_TRACE(pad, "mode %d", mode);
46 	mutex_lock(&pad->mutex);
47 	nvkm_i2c_pad_mode_locked(pad, mode);
48 	pad->mode = mode;
49 	mutex_unlock(&pad->mutex);
53 nvkm_i2c_pad_release(struct nvkm_i2c_pad *pad)
55 	PAD_TRACE(pad, "release");
56 	if (pad->mode == NVKM_I2C_PAD_OFF)
57 		nvkm_i2c_pad_mode_locked(pad, pad->mode);
58 	mutex_unlock(&pad->mutex);
62 nvkm_i2c_pad_acquire(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
64 	PAD_TRACE(pad, "acquire");
65 	mutex_lock(&pad->mutex);
66 	if (pad->mode != mode) {
67 		if (pad->mode != NVKM_I2C_PAD_OFF) {
68 			mutex_unlock(&pad->mutex);
71 		nvkm_i2c_pad_mode_locked(pad, mode);
77 nvkm_i2c_pad_fini(struct nvkm_i2c_pad *pad)
79 	PAD_TRACE(pad, "fini");
80 	nvkm_i2c_pad_mode_locked(pad, NVKM_I2C_PAD_OFF);
84 nvkm_i2c_pad_init(struct nvkm_i2c_pad *pad)
86 	PAD_TRACE(pad, "init");
87 	nvkm_i2c_pad_mode_locked(pad, pad->mode);
93 	struct nvkm_i2c_pad *pad = *ppad;
94 	if (pad) {
95 		PAD_TRACE(pad, "dtor");
96 		list_del(&pad->head);
97 		mutex_destroy(&pad->mutex);
98 		kfree(pad);
99 		pad = NULL;
105 		  int id, struct nvkm_i2c_pad *pad)
107 	pad->func = func;
108 	pad->i2c = i2c;
109 	pad->id = id;
110 	pad->mode = NVKM_I2C_PAD_OFF;
111 	mutex_init(&pad->mutex);
112 	list_add_tail(&pad->head, &i2c->pad);
113 	PAD_TRACE(pad, "ctor");