On Mon, 5 Jan 2009 12:09:27 -0800 Randy Dunlap <randy.dunlap@xxxxxxxxxx> wrote: > On Mon, 5 Jan 2009 17:35:17 +1100 Stephen Rothwell wrote: > > > Hi all, > > > > This tree will not build a powerpc ppc4xx_defconfig due to a kvm problem. > > > > Changes since 20090102: > > > drivers/built-in.o: In function `cx88_call_i2c_clients': > (.text+0x20af17): undefined reference to `videobuf_dvb_get_frontend' > drivers/built-in.o: In function `cx8802_probe': > cx88-mpeg.c:(.devinit.text+0x268c4): undefined reference to `videobuf_dvb_alloc_frontend' > cx88-mpeg.c:(.devinit.text+0x268ea): undefined reference to `videobuf_dvb_dealloc_frontends' This one were trickier. Patch enclosed. Cheers, Mauro --- cx88: Fix some Kbuild troubles As Randy Dunlap <randy.dunlap@xxxxxxxxxx> reported, cx88 has some compilation issues: drivers/built-in.o: In function `cx88_call_i2c_clients': (.text+0x20af17): undefined reference to `videobuf_dvb_get_frontend' drivers/built-in.o: In function `cx8802_probe': cx88-mpeg.c:(.devinit.text+0x268c4): undefined reference to `videobuf_dvb_alloc_frontend' cx88-mpeg.c:(.devinit.text+0x268ea): undefined reference to `videobuf_dvb_dealloc_frontends' With those configs: CONFIG_VIDEO_CX88=y CONFIG_VIDEO_CX88_BLACKBIRD=y CONFIG_VIDEO_CX88_DVB=m CONFIG_DVB_CORE=m After carefully examining the code, with the current code, several cx88 drivers (cx8800, cx8802, cx88_dvb and cx88_blackbird) should be compiled as a module, if one of them is marked as such. Just fixing Kconfig could create a very complex set of rules. Also, this hides a problem with the current approach where the dvb functionality weren't confined inside dvb module. What happens is that: - cx88-i2c (part of cx8800) has some special rules if DVB; - cx88-mpeg (cx8802 module) has also part of DVB init code; - cx88-dvb has the rest of the dvb code; - cx88-blackbird can be used with cx88-mpeg, having cx88-dvb or not. So, instead of doing some tricks at Kconfig and wait for a next breakage, this patch moves the dvb code inside cx88-i2c and cx88-mpeg into cx88-dvb. Another problem is that cx8802 were being compiled, even without cx88-dvb and cx88-blackbird modules. While on this code, let's fix also a reported problem: http://www.linuxtv.org/pipermail/linux-dvb/2009-January/031225.html A solution for the issue were proposed here: http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg00021.html Thanks to Randy, Andy, Gregoire and Thomas for helping us to detect and solve the issues. Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> diff --git a/drivers/media/video/cx88/Kconfig b/drivers/media/video/cx88/Kconfig index b0f8375..69ad968 100644 --- a/drivers/media/video/cx88/Kconfig +++ b/drivers/media/video/cx88/Kconfig @@ -69,6 +69,12 @@ config VIDEO_CX88_DVB To compile this driver as a module, choose M here: the module will be called cx88-dvb. +config VIDEO_CX88_MPEG + tristate + depends on VIDEO_CX88_DVB + depends on VIDEO_CX88_BLACKBIRD + default y + config VIDEO_CX88_VP3054 tristate "VP-3054 Secondary I2C Bus Support" default m diff --git a/drivers/media/video/cx88/Makefile b/drivers/media/video/cx88/Makefile index 6ec30f2..b06b127 100644 --- a/drivers/media/video/cx88/Makefile +++ b/drivers/media/video/cx88/Makefile @@ -3,7 +3,8 @@ cx88xx-objs := cx88-cards.o cx88-core.o cx88-i2c.o cx88-tvaudio.o \ cx8800-objs := cx88-video.o cx88-vbi.o cx8802-objs := cx88-mpeg.o -obj-$(CONFIG_VIDEO_CX88) += cx88xx.o cx8800.o cx8802.o +obj-$(CONFIG_VIDEO_CX88) += cx88xx.o cx8800.o +obj-$(CONFIG_VIDEO_CX88_MPEG) += cx8802.o obj-$(CONFIG_VIDEO_CX88_ALSA) += cx88-alsa.o obj-$(CONFIG_VIDEO_CX88_BLACKBIRD) += cx88-blackbird.o obj-$(CONFIG_VIDEO_CX88_DVB) += cx88-dvb.o diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c index da4dd49..613dfea 100644 --- a/drivers/media/video/cx88/cx88-dvb.c +++ b/drivers/media/video/cx88/cx88-dvb.c @@ -138,6 +138,28 @@ static int cx88_dvb_bus_ctrl(struct dvb_frontend* fe, int acquire) return ret; } +static void cx88_dvb_gate_ctrl(struct cx88_core *core, int open) +{ + struct videobuf_dvb_frontends *f; + struct videobuf_dvb_frontend *fe; + + if (!core->dvbdev) + return; + + f = &core->dvbdev->frontends; + + if (!f) + return; + + if (f->gate <= 1) /* undefined or fe0 */ + fe = videobuf_dvb_get_frontend(f, 1); + else + fe = videobuf_dvb_get_frontend(f, f->gate); + + if (fe && fe->dvb.frontend && fe->dvb.frontend->ops.i2c_gate_ctrl) + fe->dvb.frontend->ops.i2c_gate_ctrl(fe->dvb.frontend, open); +} + /* ------------------------------------------------------------------ */ static int dvico_fusionhdtv_demod_init(struct dvb_frontend* fe) @@ -597,12 +619,30 @@ static int dvb_register(struct cx8802_dev *dev) struct cx88_core *core = dev->core; struct videobuf_dvb_frontend *fe0, *fe1 = NULL; int mfe_shared = 0; /* bus not shared by default */ + int i; if (0 != core->i2c_rc) { printk(KERN_ERR "%s/2: no i2c-bus available, cannot attach dvb drivers\n", core->name); goto frontend_detach; } + if (!core->board.num_frontends) + return -EINVAL; + + mutex_init(&dev->frontends.lock); + INIT_LIST_HEAD(&dev->frontends.felist); + + printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, + core->board.num_frontends); + for (i = 1; i <= core->board.num_frontends; i++) { + fe0 = videobuf_dvb_alloc_frontend(&dev->frontends, i); + if (!fe0) { + printk(KERN_ERR "%s() failed to alloc\n", __func__); + videobuf_dvb_dealloc_frontends(&dev->frontends); + goto frontend_detach; + } + } + /* Get the first frontend */ fe0 = videobuf_dvb_get_frontend(&dev->frontends, 1); if (!fe0) @@ -611,6 +651,9 @@ static int dvb_register(struct cx8802_dev *dev) /* multi-frontend gate control is undefined or defaults to fe0 */ dev->frontends.gate = 0; + /* Sets the gate control callback to be used by i2c command calls */ + core->gate_ctrl = cx88_dvb_gate_ctrl; + /* init frontend(s) */ switch (core->boardnr) { case CX88_BOARD_HAUPPAUGE_DVB_T1: @@ -1109,6 +1152,7 @@ static int dvb_register(struct cx8802_dev *dev) &dev->pci->dev, adapter_nr, mfe_shared); frontend_detach: + core->gate_ctrl = NULL; videobuf_dvb_dealloc_frontends(&dev->frontends); return -EINVAL; } @@ -1270,6 +1314,8 @@ static int cx8802_dvb_remove(struct cx8802_driver *drv) vp3054_i2c_remove(dev); + core->gate_ctrl = NULL; + return 0; } diff --git a/drivers/media/video/cx88/cx88-i2c.c b/drivers/media/video/cx88/cx88-i2c.c index 1ab691d..c0ff230 100644 --- a/drivers/media/video/cx88/cx88-i2c.c +++ b/drivers/media/video/cx88/cx88-i2c.c @@ -116,30 +116,16 @@ static int detach_inform(struct i2c_client *client) void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg) { -#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) - struct videobuf_dvb_frontends *f = &core->dvbdev->frontends; - struct videobuf_dvb_frontend *fe = NULL; -#endif if (0 != core->i2c_rc) return; -#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) - if (core->dvbdev && f) { - if(f->gate <= 1) /* undefined or fe0 */ - fe = videobuf_dvb_get_frontend(f, 1); - else - fe = videobuf_dvb_get_frontend(f, f->gate); + if (core->gate_ctrl) + core->gate_ctrl(core, 1); - if (fe && fe->dvb.frontend && fe->dvb.frontend->ops.i2c_gate_ctrl) - fe->dvb.frontend->ops.i2c_gate_ctrl(fe->dvb.frontend, 1); + i2c_clients_command(&core->i2c_adap, cmd, arg); - i2c_clients_command(&core->i2c_adap, cmd, arg); - - if (fe && fe->dvb.frontend && fe->dvb.frontend->ops.i2c_gate_ctrl) - fe->dvb.frontend->ops.i2c_gate_ctrl(fe->dvb.frontend, 0); - } else -#endif - i2c_clients_command(&core->i2c_adap, cmd, arg); + if (core->gate_ctrl) + core->gate_ctrl(core, 0); } static const struct i2c_algo_bit_data cx8800_i2c_algo_template = { diff --git a/drivers/media/video/cx88/cx88-mpeg.c b/drivers/media/video/cx88/cx88-mpeg.c index 59164fc..b295b76 100644 --- a/drivers/media/video/cx88/cx88-mpeg.c +++ b/drivers/media/video/cx88/cx88-mpeg.c @@ -787,6 +787,9 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, dev->pci = pci_dev; dev->core = core; + /* Maintain a reference so cx88-video can query the 8802 device. */ + core->dvbdev = dev; + err = cx8802_init_common(dev); if (err != 0) goto fail_free; @@ -794,32 +797,6 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, INIT_LIST_HEAD(&dev->drvlist); list_add_tail(&dev->devlist,&cx8802_devlist); -#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) - mutex_init(&dev->frontends.lock); - INIT_LIST_HEAD(&dev->frontends.felist); - - if (core->board.num_frontends) { - struct videobuf_dvb_frontend *fe; - int i; - - printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, - core->board.num_frontends); - for (i = 1; i <= core->board.num_frontends; i++) { - fe = videobuf_dvb_alloc_frontend(&dev->frontends, i); - if(fe == NULL) { - printk(KERN_ERR "%s() failed to alloc\n", - __func__); - videobuf_dvb_dealloc_frontends(&dev->frontends); - err = -ENOMEM; - goto fail_free; - } - } - } -#endif - - /* Maintain a reference so cx88-video can query the 8802 device. */ - core->dvbdev = dev; - /* now autoload cx88-dvb or cx88-blackbird */ request_modules(dev); return 0; @@ -827,6 +804,7 @@ static int __devinit cx8802_probe(struct pci_dev *pci_dev, fail_free: kfree(dev); fail_core: + core->dvbdev = NULL; cx88_core_put(core,pci_dev); return err; } diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h index eb9ce30..60a8b31 100644 --- a/drivers/media/video/cx88/cx88.h +++ b/drivers/media/video/cx88/cx88.h @@ -302,6 +302,7 @@ struct cx88_dmaqueue { struct btcx_riscmem stopper; u32 count; }; +struct cx88_core; struct cx88_core { struct list_head devlist; @@ -334,7 +335,8 @@ struct cx88_core { /* config info -- dvb */ #if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE) - int (*prev_set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage); + int (*prev_set_voltage)(struct dvb_frontend *fe, fe_sec_voltage_t voltage); + void (*gate_ctrl)(struct cx88_core *core, int open); #endif /* state info */ -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
