diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c | 199 |
1 files changed, 10 insertions, 189 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c index ab64237b3..ff9f7d62f 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/gm204.c @@ -21,199 +21,20 @@ * * Authors: Ben Skeggs */ -#include "nv50.h" - -#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) - -static void -auxch_fini(struct nvkm_i2c *aux, int ch) -{ - nv_mask(aux, 0x00d954 + (ch * 0x50), 0x00310000, 0x00000000); -} - -static int -auxch_init(struct nvkm_i2c *aux, int ch) -{ - const u32 unksel = 1; /* nfi which to use, or if it matters.. */ - const u32 ureq = unksel ? 0x00100000 : 0x00200000; - const u32 urep = unksel ? 0x01000000 : 0x02000000; - u32 ctrl, timeout; - - /* wait up to 1ms for any previous transaction to be done... */ - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00d954 + (ch * 0x50)); - udelay(1); - if (!timeout--) { - AUX_ERR("begin idle timeout 0x%08x\n", ctrl); - return -EBUSY; - } - } while (ctrl & 0x03010000); - - /* set some magic, and wait up to 1ms for it to appear */ - nv_mask(aux, 0x00d954 + (ch * 0x50), 0x00300000, ureq); - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00d954 + (ch * 0x50)); - udelay(1); - if (!timeout--) { - AUX_ERR("magic wait 0x%08x\n", ctrl); - auxch_fini(aux, ch); - return -EBUSY; - } - } while ((ctrl & 0x03000000) != urep); - - return 0; -} - -int -gm204_aux(struct nvkm_i2c_port *base, bool retry, - u8 type, u32 addr, u8 *data, u8 size) -{ - struct nvkm_i2c *aux = nvkm_i2c(base); - struct nv50_i2c_port *port = (void *)base; - u32 ctrl, stat, timeout, retries; - u32 xbuf[4] = {}; - int ch = port->addr; - int ret, i; - - AUX_DBG("%d: 0x%08x %d\n", type, addr, size); - - ret = auxch_init(aux, ch); - if (ret) - goto out; - - stat = nv_rd32(aux, 0x00d958 + (ch * 0x50)); - if (!(stat & 0x10000000)) { - AUX_DBG("sink not detected\n"); - ret = -ENXIO; - goto out; - } - - if (!(type & 1)) { - memcpy(xbuf, data, size); - for (i = 0; i < 16; i += 4) { - AUX_DBG("wr 0x%08x\n", xbuf[i / 4]); - nv_wr32(aux, 0x00d930 + (ch * 0x50) + i, xbuf[i / 4]); - } - } - - ctrl = nv_rd32(aux, 0x00d954 + (ch * 0x50)); - ctrl &= ~0x0001f0ff; - ctrl |= type << 12; - ctrl |= size - 1; - nv_wr32(aux, 0x00d950 + (ch * 0x50), addr); - - /* (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, 0x00d954 + (ch * 0x50), 0x80000000 | ctrl); - nv_wr32(aux, 0x00d954 + (ch * 0x50), 0x00000000 | ctrl); - if (retries) - udelay(400); - - /* transaction request, wait up to 1ms for it to complete */ - nv_wr32(aux, 0x00d954 + (ch * 0x50), 0x00010000 | ctrl); - - timeout = 1000; - do { - ctrl = nv_rd32(aux, 0x00d954 + (ch * 0x50)); - 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, 0x00d958 + (ch * 0x50), 0, 0); - 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); - } - - if (type & 1) { - for (i = 0; i < 16; i += 4) { - xbuf[i / 4] = nv_rd32(aux, 0x00d940 + (ch * 0x50) + i); - AUX_DBG("rd 0x%08x\n", xbuf[i / 4]); - } - memcpy(data, xbuf, size); - } - -out: - auxch_fini(aux, ch); - return ret < 0 ? ret : (stat & 0x000f0000) >> 16; -} +#include "priv.h" +#include "pad.h" static const struct nvkm_i2c_func -gm204_aux_func = { - .aux = gm204_aux, +gm204_i2c = { + .pad_x_new = gf119_i2c_pad_x_new, + .pad_s_new = gm204_i2c_pad_s_new, + .aux = 8, + .aux_stat = gk104_aux_stat, + .aux_mask = gk104_aux_mask, }; int -gm204_aux_port_ctor(struct nvkm_object *parent, - struct nvkm_object *engine, - struct nvkm_oclass *oclass, void *data, u32 index, - struct nvkm_object **pobject) +gm204_i2c_new(struct nvkm_device *device, int index, struct nvkm_i2c **pi2c) { - struct dcb_i2c_entry *info = data; - struct nv50_i2c_port *port; - int ret; - - ret = nvkm_i2c_port_create(parent, engine, oclass, index, - &nvkm_i2c_aux_algo, &gm204_aux_func, &port); - *pobject = nv_object(port); - if (ret) - return ret; - - port->base.aux = info->auxch; - port->addr = info->auxch; - return 0; + return nvkm_i2c_new_(&gm204_i2c, device, index, pi2c); } - -struct nvkm_oclass -gm204_i2c_sclass[] = { - { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT), - .ofuncs = &(struct nvkm_ofuncs) { - .ctor = gf110_i2c_port_ctor, - .dtor = _nvkm_i2c_port_dtor, - .init = nv50_i2c_port_init, - .fini = _nvkm_i2c_port_fini, - }, - }, - { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX), - .ofuncs = &(struct nvkm_ofuncs) { - .ctor = gm204_aux_port_ctor, - .dtor = _nvkm_i2c_port_dtor, - .init = _nvkm_i2c_port_init, - .fini = _nvkm_i2c_port_fini, - }, - }, - {} -}; - -struct nvkm_oclass * -gm204_i2c_oclass = &(struct nvkm_i2c_impl) { - .base.handle = NV_SUBDEV(I2C, 0x24), - .base.ofuncs = &(struct nvkm_ofuncs) { - .ctor = _nvkm_i2c_ctor, - .dtor = _nvkm_i2c_dtor, - .init = _nvkm_i2c_init, - .fini = _nvkm_i2c_fini, - }, - .sclass = gm204_i2c_sclass, - .pad_x = &nv04_i2c_pad_oclass, - .pad_s = &gm204_i2c_pad_oclass, - .aux = 8, - .aux_stat = gk104_aux_stat, - .aux_mask = gk104_aux_mask, -}.base; |