as reported by smatch: drivers/media/pci/bt8xx/bttv-audio-hook.c:201 lt9415_audio() warn: bitwise AND condition is false here drivers/media/pci/bt8xx/bttv-audio-hook.c:241 winfast2000_audio() warn: bitwise AND condition is false here drivers/media/pci/bt8xx/bttv-audio-hook.c:276 pvbt878p9b_audio() warn: bitwise AND condition is false here drivers/media/pci/bt8xx/bttv-audio-hook.c:307 fv2000s_audio() warn: bitwise AND condition is false here drivers/media/pci/bt8xx/bttv-audio-hook.c:334 windvr_audio() warn: bitwise AND condition is false here drivers/media/pci/bt8xx/bttv-audio-hook.c:371 adtvk503_audio() warn: bitwise AND condition is false here there are some serious issues at the audio hook implementation. They're not following what's specified at the DocBook: http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-g-tuner.html#tuner-audmode Basically, it was assuming that the audmode (V4L2_TUNER_MODE_foo) is a variable with a bit maskk. However, it isn't. The bitmask only applies to rxsubchans field (V4L2_TUNER_SUB_foo). As the code is also too complex, and not all hooks were returning both audmode and rxsubchans to a VIDIOC_G_TUNER, rewrite the functions, in order to fix both for get and set tuner ioctls. Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx> diff --git a/drivers/media/pci/bt8xx/bttv-audio-hook.c b/drivers/media/pci/bt8xx/bttv-audio-hook.c index 2364d16586b3..2b91a24b8183 100644 --- a/drivers/media/pci/bt8xx/bttv-audio-hook.c +++ b/drivers/media/pci/bt8xx/bttv-audio-hook.c @@ -54,23 +54,33 @@ void winview_volume(struct bttv *btv, __u16 volume) void gvbctv3pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { - unsigned int con = 0; + unsigned int con; - if (set) { - gpio_inout(0x300, 0x300); - if (t->audmode & V4L2_TUNER_MODE_LANG1) - con = 0x000; - if (t->audmode & V4L2_TUNER_MODE_LANG2) - con = 0x300; - if (t->audmode & V4L2_TUNER_MODE_STEREO) - con = 0x200; -/* if (t->audmode & V4L2_TUNER_MODE_MONO) - * con = 0x100; */ - gpio_bits(0x300, con); - } else { - t->audmode = V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; + } + + gpio_inout(0x300, 0x300); + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG1: + default: + con = 0x000; + break; + case V4L2_TUNER_MODE_LANG2: + con = 0x300; + break; + case V4L2_TUNER_MODE_STEREO: + con = 0x200; + break; } + gpio_bits(0x300, con); } void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set) @@ -82,16 +92,16 @@ void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set) val = gpio_read(); if (set) { - con = 0x000; - if (t->audmode & V4L2_TUNER_MODE_LANG2) { - if (t->audmode & V4L2_TUNER_MODE_LANG1) { - /* LANG1 + LANG2 */ - con = 0x100; - } - else { - /* LANG2 */ - con = 0x300; - } + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG2: + con = 0x300; + break; + case V4L2_TUNER_MODE_LANG1_LANG2: + con = 0x100; + break; + default: + con = 0x000; + break; } if (con != (val & 0x300)) { gpio_bits(0x300, con); @@ -102,27 +112,31 @@ void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set) switch (val & 0x70) { case 0x10: t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; + t->audmode = V4L2_TUNER_MODE_LANG1_LANG2; break; case 0x30: t->rxsubchans = V4L2_TUNER_SUB_LANG2; + t->audmode = V4L2_TUNER_MODE_LANG1_LANG2; break; case 0x50: t->rxsubchans = V4L2_TUNER_SUB_LANG1; + t->audmode = V4L2_TUNER_MODE_LANG1_LANG2; break; case 0x60: t->rxsubchans = V4L2_TUNER_SUB_STEREO; + t->audmode = V4L2_TUNER_MODE_STEREO; break; case 0x70: t->rxsubchans = V4L2_TUNER_SUB_MONO; + t->audmode = V4L2_TUNER_MODE_MONO; break; default: t->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; + t->audmode = V4L2_TUNER_MODE_LANG1; } - t->audmode = V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; } } @@ -142,23 +156,32 @@ void gvbctv5pci_audio(struct bttv *btv, struct v4l2_tuner *t, int set) void avermedia_tvphone_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { - int val = 0; + int val; - if (set) { - if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */ - val = 0x02; - if (t->audmode & V4L2_TUNER_MODE_STEREO) - val = 0x01; - if (val) { - gpio_bits(0x03,val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"avermedia"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; + } + + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG2: /* SAP */ + val = 0x02; + break; + case V4L2_TUNER_MODE_STEREO: + val = 0x01; + break; + default: return; } + gpio_bits(0x03,val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"avermedia"); } @@ -166,19 +189,31 @@ void avermedia_tv_stereo_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { int val = 0; - if (set) { - if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */ - val = 0x01; - if (t->audmode & V4L2_TUNER_MODE_STEREO) /* STEREO */ - val = 0x02; - btaor(val, ~0x03, BT848_GPIO_DATA); - if (bttv_gpio) - bttv_gpio_tracking(btv,"avermedia"); - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + return; } + + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG2: /* SAP */ + val = 0x01; + break; + case V4L2_TUNER_MODE_STEREO: + val = 0x02; + break; + default: + val = 0; + break; + } + btaor(val, ~0x03, BT848_GPIO_DATA); + if (bttv_gpio) + bttv_gpio_tracking(btv,"avermedia"); } /* Lifetec 9415 handling */ @@ -192,23 +227,32 @@ void lt9415_audio(struct bttv *btv, struct v4l2_tuner *t, int set) return; } - if (set) { - if (t->audmode & V4L2_TUNER_MODE_LANG2) /* A2 SAP */ - val = 0x0080; - if (t->audmode & V4L2_TUNER_MODE_STEREO) /* A2 stereo */ - val = 0x0880; - if ((t->audmode & V4L2_TUNER_MODE_LANG1) || - (t->audmode & V4L2_TUNER_MODE_MONO)) - val = 0; - gpio_bits(0x0880, val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"lt9415"); - } else { - /* autodetect doesn't work with this card :-( */ - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + return; } + + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG2: /* A2 SAP */ + val = 0x0080; + break; + case V4L2_TUNER_MODE_STEREO: /* A2 stereo */ + val = 0x0880; + break; + default: + val = 0; + break; + } + + gpio_bits(0x0880, val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"lt9415"); } /* TDA9821 on TerraTV+ Bt848, Bt878 */ @@ -216,45 +260,69 @@ void terratv_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { unsigned int con = 0; - if (set) { - gpio_inout(0x180000,0x180000); - if (t->audmode & V4L2_TUNER_MODE_LANG2) - con = 0x080000; - if (t->audmode & V4L2_TUNER_MODE_STEREO) - con = 0x180000; - gpio_bits(0x180000, con); - if (bttv_gpio) - bttv_gpio_tracking(btv,"terratv"); - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; } + + gpio_inout(0x180000,0x180000); + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG2: + con = 0x080000; + break; + case V4L2_TUNER_MODE_STEREO: + con = 0x180000; + break; + default: + con = 0; + break; + } + gpio_bits(0x180000, con); + if (bttv_gpio) + bttv_gpio_tracking(btv,"terratv"); } void winfast2000_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { - unsigned long val = 0; + unsigned long val; - if (set) { - /*btor (0xc32000, BT848_GPIO_OUT_EN);*/ - if (t->audmode & V4L2_TUNER_MODE_MONO) /* Mono */ - val = 0x420000; - if (t->audmode & V4L2_TUNER_MODE_LANG1) /* Mono */ - val = 0x420000; - if (t->audmode & V4L2_TUNER_MODE_LANG2) /* SAP */ - val = 0x410000; - if (t->audmode & V4L2_TUNER_MODE_STEREO) /* Stereo */ - val = 0x020000; - if (val) { - gpio_bits(0x430000, val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"winfast2000"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; + } + + /*btor (0xc32000, BT848_GPIO_OUT_EN);*/ + switch (t->audmode) { + case V4L2_TUNER_MODE_MONO: + case V4L2_TUNER_MODE_LANG1: + val = 0x420000; + break; + case V4L2_TUNER_MODE_LANG2: /* SAP */ + val = 0x410000; + break; + case V4L2_TUNER_MODE_STEREO: + val = 0x020000; + break; + default: + return; } + + gpio_bits(0x430000, val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"winfast2000"); } /* @@ -272,23 +340,33 @@ void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set) if (btv->radio_user) return; - if (set) { - if (t->audmode & V4L2_TUNER_MODE_MONO) { - val = 0x01; - } - if ((t->audmode & (V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2)) - || (t->audmode & V4L2_TUNER_MODE_STEREO)) { - val = 0x02; - } - if (val) { - gpio_bits(0x03,val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"pvbt878p9b"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; } + + switch (t->audmode) { + case V4L2_TUNER_MODE_MONO: + val = 0x01; + break; + case V4L2_TUNER_MODE_LANG1: + case V4L2_TUNER_MODE_LANG2: + case V4L2_TUNER_MODE_STEREO: + val = 0x02; + break; + default: + return; + } + + gpio_bits(0x03,val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"pvbt878p9b"); } /* @@ -298,28 +376,37 @@ void pvbt878p9b_audio(struct bttv *btv, struct v4l2_tuner *t, int set) */ void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { - unsigned int val = 0xffff; + unsigned int val; if (btv->radio_user) return; - if (set) { - if (t->audmode & V4L2_TUNER_MODE_MONO) { - val = 0x0000; - } - if ((t->audmode & (V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2)) - || (t->audmode & V4L2_TUNER_MODE_STEREO)) { - val = 0x1080; /*-dk-???: 0x0880, 0x0080, 0x1800 ... */ - } - if (val != 0xffff) { - gpio_bits(0x1800, val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"fv2000s"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; } + + switch (t->audmode) { + case V4L2_TUNER_MODE_MONO: + val = 0x0000; + break; + case V4L2_TUNER_MODE_LANG1: + case V4L2_TUNER_MODE_LANG2: + case V4L2_TUNER_MODE_STEREO: + val = 0x1080; /*-dk-???: 0x0880, 0x0080, 0x1800 ... */ + break; + default: + return; + } + gpio_bits(0x1800, val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"fv2000s"); } /* @@ -328,26 +415,33 @@ void fv2000s_audio(struct bttv *btv, struct v4l2_tuner *t, int set) */ void windvr_audio(struct bttv *btv, struct v4l2_tuner *t, int set) { - unsigned long val = 0; + unsigned long val; - if (set) { - if (t->audmode & V4L2_TUNER_MODE_MONO) - val = 0x040000; - if (t->audmode & V4L2_TUNER_MODE_LANG1) - val = 0; - if (t->audmode & V4L2_TUNER_MODE_LANG2) - val = 0x100000; - if (t->audmode & V4L2_TUNER_MODE_STEREO) - val = 0; - if (val) { - gpio_bits(0x140000, val); - if (bttv_gpio) - bttv_gpio_tracking(btv,"windvr"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; + } + + switch (t->audmode) { + case V4L2_TUNER_MODE_MONO: + val = 0x040000; + break; + case V4L2_TUNER_MODE_LANG2: + val = 0x100000; + break; + default: + return; } + + gpio_bits(0x140000, val); + if (bttv_gpio) + bttv_gpio_tracking(btv,"windvr"); } /* @@ -360,23 +454,36 @@ void adtvk503_audio(struct bttv *btv, struct v4l2_tuner *t, int set) /* btaor(0x1e0000, ~0x1e0000, BT848_GPIO_OUT_EN); */ - if (set) { - /* btor(***, BT848_GPIO_OUT_EN); */ - if (t->audmode & V4L2_TUNER_MODE_LANG1) - con = 0x00000000; - if (t->audmode & V4L2_TUNER_MODE_LANG2) - con = 0x00180000; - if (t->audmode & V4L2_TUNER_MODE_STEREO) - con = 0x00000000; - if (t->audmode & V4L2_TUNER_MODE_MONO) - con = 0x00060000; - if (con != 0xffffff) { - gpio_bits(0x1e0000,con); - if (bttv_gpio) - bttv_gpio_tracking(btv, "adtvk503"); - } - } else { - t->audmode = V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO | - V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2; + if (!set) { + /* Not much to do here */ + t->audmode = V4L2_TUNER_MODE_LANG1; + t->rxsubchans = V4L2_TUNER_SUB_MONO | + V4L2_TUNER_SUB_STEREO | + V4L2_TUNER_SUB_LANG1 | + V4L2_TUNER_SUB_LANG2; + + return; } + + /* btor(***, BT848_GPIO_OUT_EN); */ + switch (t->audmode) { + case V4L2_TUNER_MODE_LANG1: + con = 0x00000000; + break; + case V4L2_TUNER_MODE_LANG2: + con = 0x00180000; + break; + case V4L2_TUNER_MODE_STEREO: + con = 0x00000000; + break; + case V4L2_TUNER_MODE_MONO: + con = 0x00060000; + break; + default: + return; + } + + gpio_bits(0x1e0000,con); + if (bttv_gpio) + bttv_gpio_tracking(btv, "adtvk503"); } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
