1 /* 2 * Copyright (C) 2006 Freescale Semiconductor, Inc. 3 * 4 * Dave Liu <daveliu@freescale.com> 5 * based on source code of Shlomi Gridish 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 #include "common.h" 24 #include "asm/errno.h" 25 #include "asm/io.h" 26 #include "asm/immap_85xx.h" 27 28 #if defined(CONFIG_QE) 29 #define NUM_OF_PINS 32 30 void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign) 31 { 32 u32 pin_2bit_mask; 33 u32 pin_2bit_dir; 34 u32 pin_2bit_assign; 35 u32 pin_1bit_mask; 36 u32 tmp_val; 37 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); 38 volatile par_io_t *par_io = (volatile par_io_t *) 39 &(gur->qe_par_io); 40 41 /* Caculate pin location and 2bit mask and dir */ 42 pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); 43 pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); 44 45 /* Setup the direction */ 46 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \ 47 in_be32(&par_io[port].cpdir2) : 48 in_be32(&par_io[port].cpdir1); 49 50 if (pin > (NUM_OF_PINS/2) -1) { 51 out_be32(&par_io[port].cpdir2, ~pin_2bit_mask & tmp_val); 52 out_be32(&par_io[port].cpdir2, pin_2bit_dir | tmp_val); 53 } else { 54 out_be32(&par_io[port].cpdir1, ~pin_2bit_mask & tmp_val); 55 out_be32(&par_io[port].cpdir1, pin_2bit_dir | tmp_val); 56 } 57 58 /* Calculate pin location for 1bit mask */ 59 pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1))); 60 61 /* Setup the open drain */ 62 tmp_val = in_be32(&par_io[port].cpodr); 63 if (open_drain) 64 out_be32(&par_io[port].cpodr, pin_1bit_mask | tmp_val); 65 else 66 out_be32(&par_io[port].cpodr, ~pin_1bit_mask & tmp_val); 67 68 /* Setup the assignment */ 69 tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? 70 in_be32(&par_io[port].cppar2): 71 in_be32(&par_io[port].cppar1); 72 pin_2bit_assign = (u32)(assign 73 << (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2)); 74 75 /* Clear and set 2 bits mask */ 76 if (pin > (NUM_OF_PINS/2) - 1) { 77 out_be32(&par_io[port].cppar2, ~pin_2bit_mask & tmp_val); 78 out_be32(&par_io[port].cppar2, pin_2bit_assign | tmp_val); 79 } else { 80 out_be32(&par_io[port].cppar1, ~pin_2bit_mask & tmp_val); 81 out_be32(&par_io[port].cppar1, pin_2bit_assign | tmp_val); 82 } 83 } 84 85 #endif /* CONFIG_QE */ 86