diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c | 108 |
1 files changed, 57 insertions, 51 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c index df6d3e4b68be..f59c3a255462 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c @@ -24,6 +24,36 @@ #include "nv50.h" +void +nv94_aux_stat(struct nouveau_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx) +{ + u32 intr = nv_rd32(i2c, 0x00e06c); + u32 stat = nv_rd32(i2c, 0x00e068) & intr, i; + for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) { + if ((stat & (1 << (i * 4)))) *hi |= 1 << i; + if ((stat & (2 << (i * 4)))) *lo |= 1 << i; + if ((stat & (4 << (i * 4)))) *rq |= 1 << i; + if ((stat & (8 << (i * 4)))) *tx |= 1 << i; + } + nv_wr32(i2c, 0x00e06c, intr); +} + +void +nv94_aux_mask(struct nouveau_i2c *i2c, u32 type, u32 mask, u32 data) +{ + u32 temp = nv_rd32(i2c, 0x00e068), i; + for (i = 0; i < 8; i++) { + if (mask & (1 << i)) { + if (!(data & (1 << i))) { + temp &= ~(type << (i * 4)); + continue; + } + temp |= type << (i * 4); + } + } + nv_wr32(i2c, 0x00e068, temp); +} + #define AUX_DBG(fmt, args...) nv_debug(aux, "AUXCH(%d): " fmt, ch, ##args) #define AUX_ERR(fmt, args...) nv_error(aux, "AUXCH(%d): " fmt, ch, ##args) @@ -69,7 +99,8 @@ auxch_init(struct nouveau_i2c *aux, int ch) } int -nv94_aux(struct nouveau_i2c_port *base, u8 type, u32 addr, u8 *data, u8 size) +nv94_aux(struct nouveau_i2c_port *base, bool retry, + u8 type, u32 addr, u8 *data, u8 size) { struct nouveau_i2c *aux = nouveau_i2c(base); struct nv50_i2c_port *port = (void *)base; @@ -105,9 +136,8 @@ nv94_aux(struct nouveau_i2c_port *base, u8 type, u32 addr, u8 *data, u8 size) ctrl |= size - 1; nv_wr32(aux, 0x00e4e0 + (ch * 0x50), addr); - /* retry transaction a number of times on failure... */ - ret = -EREMOTEIO; - for (retries = 0; retries < 32; retries++) { + /* (maybe) retry transaction a number of times on failure... */ + for (retries = 0; !ret && retries < 32; retries++) { /* reset, and delay a while if this is a retry */ nv_wr32(aux, 0x00e4e4 + (ch * 0x50), 0x80000000 | ctrl); nv_wr32(aux, 0x00e4e4 + (ch * 0x50), 0x00000000 | ctrl); @@ -123,16 +153,21 @@ nv94_aux(struct nouveau_i2c_port *base, u8 type, u32 addr, u8 *data, u8 size) udelay(1); if (!timeout--) { AUX_ERR("tx req timeout 0x%08x\n", ctrl); + ret = -EIO; goto out; } } while (ctrl & 0x00010000); + ret = 1; /* read status, and check if transaction completed ok */ stat = nv_mask(aux, 0x00e4e8 + (ch * 0x50), 0, 0); - if (!(stat & 0x000f0f00)) { - ret = 0; - break; - } + if ((stat & 0x000f0000) == 0x00080000 || + (stat & 0x000f0000) == 0x00020000) + ret = retry ? 0 : 1; + if ((stat & 0x00000100)) + ret = -ETIMEDOUT; + if ((stat & 0x00000e00)) + ret = -EIO; AUX_DBG("%02d 0x%08x 0x%08x\n", retries, ctrl, stat); } @@ -147,29 +182,11 @@ nv94_aux(struct nouveau_i2c_port *base, u8 type, u32 addr, u8 *data, u8 size) out: auxch_fini(aux, ch); - return ret; -} - -void -nv94_i2c_acquire(struct nouveau_i2c_port *base) -{ - struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine; - struct nv50_i2c_port *port = (void *)base; - if (port->ctrl) { - nv_mask(priv, port->ctrl + 0x0c, 0x00000001, 0x00000000); - nv_mask(priv, port->ctrl + 0x00, 0x0000f003, port->data); - } -} - -void -nv94_i2c_release(struct nouveau_i2c_port *base) -{ + return ret < 0 ? ret : (stat & 0x000f0000) >> 16; } static const struct nouveau_i2c_func nv94_i2c_func = { - .acquire = nv94_i2c_acquire, - .release = nv94_i2c_release, .drive_scl = nv50_i2c_drive_scl, .drive_sda = nv50_i2c_drive_sda, .sense_scl = nv50_i2c_sense_scl, @@ -206,8 +223,6 @@ nv94_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, static const struct nouveau_i2c_func nv94_aux_func = { - .acquire = nv94_i2c_acquire, - .release = nv94_i2c_release, .aux = nv94_aux, }; @@ -227,6 +242,7 @@ nv94_aux_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, if (ret) return ret; + port->base.aux = info->drive; port->addr = info->drive; if (info->share != DCB_I2C_UNUSED) { port->ctrl = 0x00e500 + (info->drive * 0x50); @@ -257,29 +273,19 @@ nv94_i2c_sclass[] = { {} }; -static int -nv94_i2c_ctor(struct nouveau_object *parent, struct nouveau_object *engine, - struct nouveau_oclass *oclass, void *data, u32 size, - struct nouveau_object **pobject) -{ - struct nv50_i2c_priv *priv; - int ret; - - ret = nouveau_i2c_create(parent, engine, oclass, nv94_i2c_sclass, &priv); - *pobject = nv_object(priv); - if (ret) - return ret; - - return 0; -} - -struct nouveau_oclass -nv94_i2c_oclass = { - .handle = NV_SUBDEV(I2C, 0x94), - .ofuncs = &(struct nouveau_ofuncs) { - .ctor = nv94_i2c_ctor, +struct nouveau_oclass * +nv94_i2c_oclass = &(struct nouveau_i2c_impl) { + .base.handle = NV_SUBDEV(I2C, 0x94), + .base.ofuncs = &(struct nouveau_ofuncs) { + .ctor = _nouveau_i2c_ctor, .dtor = _nouveau_i2c_dtor, .init = _nouveau_i2c_init, .fini = _nouveau_i2c_fini, }, -}; + .sclass = nv94_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, + .pad_s = &nv94_i2c_pad_oclass, + .aux = 4, + .aux_stat = nv94_aux_stat, + .aux_mask = nv94_aux_mask, +}.base; |