89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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*
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#define GPDIR 0
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#define GPCFG 4 /* open drain or not */
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#define GPDAT 8
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/*
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* gpio port and pin definitions
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* NOTE: port number starts from 0
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*/
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#define XL_INITN_PORT 1
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#define XL_INITN_PIN 14
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#define XL_RDWRN_PORT 1
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#define XL_RDWRN_PIN 13
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#define XL_CCLK_PORT 1
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#define XL_CCLK_PIN 10
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#define XL_PROGN_PORT 1
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#define XL_PROGN_PIN 25
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#define XL_CSIN_PORT 1
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#define XL_CSIN_PIN 26
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#define XL_DONE_PORT 1
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#define XL_DONE_PIN 27
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/*
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* gpio mapping
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*
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XL_config_D0 – gpio1_31
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Xl_config_d1 – gpio1_30
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Xl_config_d2 – gpio1_29
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Xl_config_d3 – gpio1_28
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Xl_config_d4 – gpio1_27
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Xl_config_d5 – gpio1_26
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Xl_config_d6 – gpio1_25
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Xl_config_d7 – gpio1_24
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Xl_config_d8 – gpio1_23
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Xl_config_d9 – gpio1_22
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Xl_config_d10 – gpio1_21
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Xl_config_d11 – gpio1_20
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Xl_config_d12 – gpio1_19
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Xl_config_d13 – gpio1_18
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Xl_config_d14 – gpio1_16
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Xl_config_d15 – gpio1_14
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*
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*/
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/*
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* program bus width in bytes
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*/
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enum wbus {
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bus_1byte = 1,
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bus_2byte = 2,
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};
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#define MAX_WAIT_DONE 10000
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struct gpiobus {
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int ngpio;
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void __iomem *r[4];
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};
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int xl_supported_prog_bus_width(enum wbus bus_bytes);
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void xl_program_b(int32_t i);
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void xl_rdwr_b(int32_t i);
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void xl_csi_b(int32_t i);
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int xl_get_init_b(void);
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int xl_get_done_b(void);
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void xl_shift_cclk(int count);
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void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata);
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int xl_init_io(void);
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