drivers/input/pc_keyb.c

7  * PS/2 keyboard driver
15 #include <keyboard.h>
28  * This reads the keyboard status port, and does the
37 	while ((--work > 0) && (status & KBD_STAT_OBF)) {  in handle_kbd_event()
54 		PRINTF("pc_keyb: controller jammed (0x%02X).\n", status);  in handle_kbd_event()
64 	val = -1;  in kbd_read_data()
69 			val = -2;  in kbd_read_data()
82 		if(timeout--==0)  in kbd_wait_for_input()
83 			return -1;  in kbd_wait_for_input()
100 		timeout--;  in kb_wait()
131 	 * Test the keyboard interface.  in kbd_initialize()
139 	 * Perform a keyboard interface test.  This causes the controller  in kbd_initialize()
140 	 * to test the keyboard clock and data lines.  The results of the  in kbd_initialize()
147 	 * Enable the keyboard by allowing the keyboard clock to run.  in kbd_initialize()
152 	 * Reset keyboard. If the read times out  in kbd_initialize()
153 	 * then the assumption is that no keyboard is  in kbd_initialize()
155 	 * This defaults the keyboard to scan-code set 2.  in kbd_initialize()
157 	 * Set up to try again if the keyboard asks for RESEND.  in kbd_initialize()
173 	 * Set keyboard controller mode. During this, the keyboard should be  in kbd_initialize()
176 	 * Set up to try again if the keyboard asks for RESEND.  in kbd_initialize()
184 			return "Kbd:   disable keyboard: no ACK";  in kbd_initialize()
193 	/* AMCC powerpc portables need this to use scan-code set 1 -- Cort */  in kbd_initialize()
197 		 * If the controller does not support conversion,  in kbd_initialize()
198 		 * Set the keyboard to scan-code set 1.  in kbd_initialize()
207 		return "Kbd:   enable keyboard: no ACK";  in kbd_initialize()
238 		PRINTF("AT Keyboard initialized\n");  in kbd_init_hw()
243 		return (-1);  in kbd_init_hw()