diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/i2c/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/i2c/base.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c index 2895c19bb152..041fd5edaebf 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c @@ -195,7 +195,7 @@ nouveau_i2c_find_type(struct nouveau_i2c *i2c, u16 type) static int nouveau_i2c_identify(struct nouveau_i2c *i2c, int index, const char *what, - struct i2c_board_info *info, + struct nouveau_i2c_board_info *info, bool (*match)(struct nouveau_i2c_port *, struct i2c_board_info *)) { @@ -208,12 +208,29 @@ nouveau_i2c_identify(struct nouveau_i2c *i2c, int index, const char *what, } nv_debug(i2c, "probing %ss on bus: %d\n", what, port->index); - for (i = 0; info[i].addr; i++) { - if (nv_probe_i2c(port, info[i].addr) && - (!match || match(port, &info[i]))) { - nv_info(i2c, "detected %s: %s\n", what, info[i].type); + for (i = 0; info[i].dev.addr; i++) { + u8 orig_udelay = 0; + + if ((port->adapter.algo == &i2c_bit_algo) && + (info[i].udelay != 0)) { + struct i2c_algo_bit_data *algo = port->adapter.algo_data; + nv_debug(i2c, "using custom udelay %d instead of %d\n", + info[i].udelay, algo->udelay); + orig_udelay = algo->udelay; + algo->udelay = info[i].udelay; + } + + if (nv_probe_i2c(port, info[i].dev.addr) && + (!match || match(port, &info[i].dev))) { + nv_info(i2c, "detected %s: %s\n", what, + info[i].dev.type); return i; } + + if (orig_udelay) { + struct i2c_algo_bit_data *algo = port->adapter.algo_data; + algo->udelay = orig_udelay; + } } nv_debug(i2c, "no devices found.\n"); |