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 */
220  * dvb_ca_en50221_check_camstatus - Check CAM status.
263  *	 register on a CAM interface, checking for errors and timeout.
313  * dvb_ca_en50221_link_init - Initialise the link layer connection to a CAM.
338 	/* read the buffer size from the CAM */  in dvb_ca_en50221_link_init()
354 	 * store it, and choose the minimum of our buffer and the CAM's buffer  in dvb_ca_en50221_link_init()
365 	/* write the buffer size to the CAM */  in dvb_ca_en50221_link_init()
442  * dvb_ca_en50221_parse_attributes - Parse attribute memory of a CAM module,
443  *	extracting Config register, and checking it is a DVB CAM module.
530 		pr_err("dvb_ca adapter %d: Unsupported DVB CAM module version %c%c%c%c\n",  in dvb_ca_en50221_parse_attributes()
582 	dprintk("Valid DVB CAM detected MANID:%x DEVID:%x CONFIGBASE:0x%x CONFIGOPTION:0x%x\n",  in dvb_ca_en50221_parse_attributes()
590  * dvb_ca_en50221_set_configoption - Set CAM's configoption correctly.
593  * @slot: Slot containing the CAM.
617  * dvb_ca_en50221_read_data - This function talks to an EN50221 CAM control
618  *	interface. It reads a buffer of data from the CAM. The data can either
698 …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()
706 				pr_err("dvb_ca adapter %d: CAM sent a buffer that was less than 2 bytes!\n",  in dvb_ca_en50221_read_data()
714 				pr_err("dvb_ca adapter %d: CAM tried to send a buffer larger than the ecount size!\n",  in dvb_ca_en50221_read_data()
773  * dvb_ca_en50221_write_data - This function talks to an EN50221 CAM control
774  *				interface. It writes a buffer of data to a CAM.
835 	 * It may need some time for the CAM to settle down, or there might  in dvb_ca_en50221_write_data()
836 	 * be a race condition between the CAM, writing HC and our last  in dvb_ca_en50221_write_data()
837 	 * check for DA. This happens, if the CAM asserts DA, just after  in dvb_ca_en50221_write_data()
839 	 * a bug in the CAM to keep the FR bit, the lower layer/HW  in dvb_ca_en50221_write_data()
840 	 * communication requires a longer timeout or the CAM needs more  in dvb_ca_en50221_write_data()
900  * dvb_ca_en50221_slot_shutdown - A CAM has been removed => shut it down.
914 	 * write to a defunct CAM  in dvb_ca_en50221_slot_shutdown()
992 			dprintk("CAM supports DA IRQ\n");  in dvb_ca_en50221_frda_irq()
1081  * Poll if the CAM is gone.
1086  *          1 .. CAM state changed
1127 	/* check the cam status + deal with CAMCHANGEs */  in dvb_ca_en50221_thread_state_machine()
1133 		/* if a CAM is NOW present, initialise it */  in dvb_ca_en50221_thread_state_machine()
1142 	/* CAM state machine */  in dvb_ca_en50221_thread_state_machine()
1181 			pr_err("dvb_ca adapter %d: Unable to initialise CAM :(\n",  in dvb_ca_en50221_thread_state_machine()
1190 			pr_err("dvb_ca adapter %d: Unable to reset CAM IF\n",  in dvb_ca_en50221_thread_state_machine()
1196 		dprintk("DVB CAM validated successfully\n");  in dvb_ca_en50221_thread_state_machine()
1205 			pr_err("dvb_ca adapter %d: DVB CAM did not respond :(\n",  in dvb_ca_en50221_thread_state_machine()
1224 			pr_err("dvb_ca adapter %d: DVB CAM link initialisation failed :(\n",  in dvb_ca_en50221_thread_state_machine()
1234 				pr_err("dvb_ca adapter %d: Unable to allocate CAM rx buffer :(\n",  in dvb_ca_en50221_thread_state_machine()
1247 		pr_info("dvb_ca adapter %d: DVB CAM detected and initialised successfully\n",  in dvb_ca_en50221_thread_state_machine()
1268 				 * so we can handle the cam change  in dvb_ca_en50221_thread_state_machine()
1291  * Kernel thread which monitors CA slots for CAM changes, and performs data
1498 			 * check the CAM hasn't been removed/reset in the  in dvb_ca_en50221_io_write()