Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>master
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/*
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* Copyright (C) 2006 Freescale Semiconductor, Inc. |
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* |
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* Dave Liu <daveliu@freescale.com> |
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* based on source code of Shlomi Gridish |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include "common.h" |
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#include "asm/errno.h" |
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#include "asm/io.h" |
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#include "asm/immap_85xx.h" |
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#if defined(CONFIG_QE) |
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#define NUM_OF_PINS 32 |
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void qe_config_iopin(u8 port, u8 pin, int dir, int open_drain, int assign) |
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{ |
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u32 pin_2bit_mask; |
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u32 pin_2bit_dir; |
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u32 pin_2bit_assign; |
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u32 pin_1bit_mask; |
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u32 tmp_val; |
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volatile immap_t *im = (volatile immap_t *)CFG_IMMR; |
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volatile par_io_t *par_io = (volatile par_io_t *) |
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&(im->im_gur.qe_par_io); |
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/* Caculate pin location and 2bit mask and dir */ |
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pin_2bit_mask = (u32)(0x3 << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); |
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pin_2bit_dir = (u32)(dir << (NUM_OF_PINS-(pin%(NUM_OF_PINS/2)+1)*2)); |
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/* Setup the direction */ |
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tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? \
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in_be32(&par_io[port].cpdir2) : |
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in_be32(&par_io[port].cpdir1); |
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if (pin > (NUM_OF_PINS/2) -1) { |
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out_be32(&par_io[port].cpdir2, ~pin_2bit_mask & tmp_val); |
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out_be32(&par_io[port].cpdir2, pin_2bit_dir | tmp_val); |
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} else { |
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out_be32(&par_io[port].cpdir1, ~pin_2bit_mask & tmp_val); |
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out_be32(&par_io[port].cpdir1, pin_2bit_dir | tmp_val); |
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} |
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/* Calculate pin location for 1bit mask */ |
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pin_1bit_mask = (u32)(1 << (NUM_OF_PINS - (pin+1))); |
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/* Setup the open drain */ |
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tmp_val = in_be32(&par_io[port].cpodr); |
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if (open_drain) |
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out_be32(&par_io[port].cpodr, pin_1bit_mask | tmp_val); |
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else |
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out_be32(&par_io[port].cpodr, ~pin_1bit_mask & tmp_val); |
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/* Setup the assignment */ |
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tmp_val = (pin > (NUM_OF_PINS/2) - 1) ? |
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in_be32(&par_io[port].cppar2): |
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in_be32(&par_io[port].cppar1); |
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pin_2bit_assign = (u32)(assign |
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<< (NUM_OF_PINS - (pin%(NUM_OF_PINS/2)+1)*2)); |
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/* Clear and set 2 bits mask */ |
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if (pin > (NUM_OF_PINS/2) - 1) { |
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out_be32(&par_io[port].cppar2, ~pin_2bit_mask & tmp_val); |
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out_be32(&par_io[port].cppar2, pin_2bit_assign | tmp_val); |
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} else { |
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out_be32(&par_io[port].cppar1, ~pin_2bit_mask & tmp_val); |
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out_be32(&par_io[port].cppar1, pin_2bit_assign | tmp_val); |
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} |
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} |
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#endif /* CONFIG_QE */ |
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