3  * dvb_ca.c: generic DVB functions for EN50221 CAM interfaces
81 	/* current state of the CAM */
93 	/* base address of CAM config */
99 	/* if 1, the CAM supports DA IRQs */
102 	/* size of the buffer to use when talking to the CAM */
226  * dvb_ca_en50221_check_camstatus - Check CAM status.
269  *	 register on a CAM interface, checking for errors and timeout.
319  * dvb_ca_en50221_link_init - Initialise the link layer connection to a CAM.
344 	/* read the buffer size from the CAM */  in dvb_ca_en50221_link_init()
360 	 * store it, and choose the minimum of our buffer and the CAM's buffer  in dvb_ca_en50221_link_init()
371 	/* write the buffer size to the CAM */  in dvb_ca_en50221_link_init()
448  * dvb_ca_en50221_parse_attributes - Parse attribute memory of a CAM module,
449  *	extracting Config register, and checking it is a DVB CAM module.
536 		pr_err("dvb_ca adapter %d: Unsupported DVB CAM module version %c%c%c%c\n",  in dvb_ca_en50221_parse_attributes()
588 	dprintk("Valid DVB CAM detected MANID:%x DEVID:%x CONFIGBASE:0x%x CONFIGOPTION:0x%x\n",  in dvb_ca_en50221_parse_attributes()
596  * dvb_ca_en50221_set_configoption - Set CAM's configoption correctly.
599  * @slot: Slot containing the CAM.
623  * dvb_ca_en50221_read_data - This function talks to an EN50221 CAM control
624  *	interface. It reads a buffer of data from the CAM. The data can either
704 …pr_err("dvb_ca adapter %d: CAM tried to send a buffer larger than the link buffer size (%i > %i)!\…  in dvb_ca_en50221_read_data()
712 				pr_err("dvb_ca adapter %d: CAM sent a buffer that was less than 2 bytes!\n",  in dvb_ca_en50221_read_data()
720 				pr_err("dvb_ca adapter %d: CAM tried to send a buffer larger than the ecount size!\n",  in dvb_ca_en50221_read_data()
779  * dvb_ca_en50221_write_data - This function talks to an EN50221 CAM control
780  *				interface. It writes a buffer of data to a CAM.
843 	 * It may need some time for the CAM to settle down, or there might  in dvb_ca_en50221_write_data()
844 	 * be a race condition between the CAM, writing HC and our last  in dvb_ca_en50221_write_data()
845 	 * check for DA. This happens, if the CAM asserts DA, just after  in dvb_ca_en50221_write_data()
847 	 * a bug in the CAM to keep the FR bit, the lower layer/HW  in dvb_ca_en50221_write_data()
848 	 * communication requires a longer timeout or the CAM needs more  in dvb_ca_en50221_write_data()
908  * dvb_ca_en50221_slot_shutdown - A CAM has been removed => shut it down.
922 	 * write to a defunct CAM  in dvb_ca_en50221_slot_shutdown()
1000 			dprintk("CAM supports DA IRQ\n");  in dvb_ca_en50221_frda_irq()
1089  * dvb_ca_en50221_poll_cam_gone - Poll if the CAM is gone.
1094  *          1 .. CAM state changed
1136 	/* check the cam status + deal with CAMCHANGEs */  in dvb_ca_en50221_thread_state_machine()
1142 		/* if a CAM is NOW present, initialise it */  in dvb_ca_en50221_thread_state_machine()
1151 	/* CAM state machine */  in dvb_ca_en50221_thread_state_machine()
1190 			pr_err("dvb_ca adapter %d: Unable to initialise CAM :(\n",  in dvb_ca_en50221_thread_state_machine()
1199 			pr_err("dvb_ca adapter %d: Unable to reset CAM IF\n",  in dvb_ca_en50221_thread_state_machine()
1205 		dprintk("DVB CAM validated successfully\n");  in dvb_ca_en50221_thread_state_machine()
1214 			pr_err("dvb_ca adapter %d: DVB CAM did not respond :(\n",  in dvb_ca_en50221_thread_state_machine()
1233 			pr_err("dvb_ca adapter %d: DVB CAM link initialisation failed :(\n",  in dvb_ca_en50221_thread_state_machine()
1243 				pr_err("dvb_ca adapter %d: Unable to allocate CAM rx buffer :(\n",  in dvb_ca_en50221_thread_state_machine()
1256 		pr_info("dvb_ca adapter %d: DVB CAM detected and initialised successfully\n",  in dvb_ca_en50221_thread_state_machine()
1277 				 * so we can handle the cam change  in dvb_ca_en50221_thread_state_machine()
1300  * Kernel thread which monitors CA slots for CAM changes, and performs data
1509 			 * check the CAM hasn't been removed/reset in the  in dvb_ca_en50221_io_write()