/* * Copyright (C) 2006 Freescale Semiconductor, Inc. * * Dave Liu <daveliu@freescale.com> * based on source code of Shlomi Gridish * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include "common.h" #include "asm/errno.h" #include "asm/io.h" #include "asm/immap_83xx.h" #if defined(CONFIG_QE) #define NUM_OF_PINS 32 void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign) { u32 pin_2bit_mask; u32 pin_2bit_dir; u32 pin_2bit_assign; u32 pin_1bit_mask; u32 tmp_val; volatile immap_t *im = (volatile immap_t *)CFG_IMMR; volatile qepio83xx_t *par_io = (volatile qepio83xx_t *)&im->qepio; /* Caculate pin location and 2bit mask and dir */ pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); /* Setup the direction */ tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \ in_be32(&par_io->ioport[port].dir2) : in_be32(&par_io->ioport[port].dir1); if (pin > (NUM_OF_PINS/2) -1) { out_be32(&par_io->ioport[port].dir2, ~pin_2bit_mask & tmp_val); out_be32(&par_io->ioport[port].dir2, pin_2bit_dir | tmp_val); } else { out_be32(&par_io->ioport[port].dir1, ~pin_2bit_mask & tmp_val); out_be32(&par_io->ioport[port].dir1, pin_2bit_dir | tmp_val); } /* Calculate pin location for 1bit mask */ pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1))); /* Setup the open drain */ tmp_val = in_be32(&par_io->ioport[port].podr); if (open_drain) { out_be32(&par_io->ioport[port].podr, pin_1bit_mask | tmp_val); } else { out_be32(&par_io->ioport[port].podr, ~pin_1bit_mask & tmp_val); } /* Setup the assignment */ tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? in_be32(&par_io->ioport[port].ppar2): in_be32(&par_io->ioport[port].ppar1); pin_2bit_assign = (u32)(assign << (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2)); /* Clear and set 2 bits mask */ if (pin > (NUM_OF_PINS/2) - 1) { out_be32(&par_io->ioport[port].ppar2, ~pin_2bit_mask & tmp_val); out_be32(&par_io->ioport[port].ppar2, pin_2bit_assign | tmp_val); } else { out_be32(&par_io->ioport[port].ppar1, ~pin_2bit_mask & tmp_val); out_be32(&par_io->ioport[port].ppar1, pin_2bit_assign | tmp_val); } } #endif /* CONFIG_QE */