board/trab/tsc2000.h

   1 /*
   2  * Functions to access the TSC2000 controller on TRAB board (used for scanning
   3  * thermo sensors)
   4  *
   5  * Copyright (C) 2003 Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
   6  *
   7  * Copyright (C) 2002 DENX Software Engineering, Wolfgang Denk, wd@denx.de
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #ifndef _TSC2000_H_
  29 #define _TSC2000_H_
  30
  31 /* temperature channel multiplexer definitions */
  32 #define CON_MUX0                (gpio->PCCON = (gpio->PCCON & 0x0FFFFFCFF) | 0x00000100)
  33 #define CLR_MUX0                (gpio->PCDAT &= 0x0FFEF)
  34 #define SET_MUX0                (gpio->PCDAT |= 0x00010)
  35
  36 #define CON_MUX1                (gpio->PCCON = (gpio->PCCON & 0x0FFFFF3FF) | 0x00000400)
  37 #define CLR_MUX1                (gpio->PCDAT &= 0x0FFDF)
  38 #define SET_MUX1                (gpio->PCDAT |= 0x00020)
  39
  40 #define CON_MUX1_ENABLE         (gpio->PCCON = (gpio->PCCON & 0x0FFFFCFFF) | 0x00001000)
  41 #define CLR_MUX1_ENABLE         (gpio->PCDAT |= 0x00040)
  42 #define SET_MUX1_ENABLE         (gpio->PCDAT &= 0x0FFBF)
  43
  44 #define CON_MUX2_ENABLE         (gpio->PCCON = (gpio->PCCON & 0x0FFFF3FFF) | 0x00004000)
  45 #define CLR_MUX2_ENABLE         (gpio->PCDAT |= 0x00080)
  46 #define SET_MUX2_ENABLE         (gpio->PCDAT &= 0x0FF7F)
  47
  48 #define CON_MUX3_ENABLE         (gpio->PCCON = (gpio->PCCON & 0x0FFFCFFFF) | 0x00010000)
  49 #define CLR_MUX3_ENABLE         (gpio->PCDAT |= 0x00100)
  50 #define SET_MUX3_ENABLE         (gpio->PCDAT &= 0x0FEFF)
  51
  52 #define CON_MUX4_ENABLE         (gpio->PCCON = (gpio->PCCON & 0x0FFF3FFFF) | 0x00040000)
  53 #define CLR_MUX4_ENABLE         (gpio->PCDAT |= 0x00200)
  54 #define SET_MUX4_ENABLE         (gpio->PCDAT &= 0x0FDFF)
  55
  56 #define CON_SEL_TEMP_V_0        (gpio->PCCON = (gpio->PCCON & 0x0FFCFFFFF) | 0x00100000)
  57 #define CLR_SEL_TEMP_V_0        (gpio->PCDAT &= 0x0FBFF)
  58 #define SET_SEL_TEMP_V_0        (gpio->PCDAT |= 0x00400)
  59
  60 #define CON_SEL_TEMP_V_1        (gpio->PCCON = (gpio->PCCON & 0x0FF3FFFFF) | 0x00400000)
  61 #define CLR_SEL_TEMP_V_1        (gpio->PCDAT &= 0x0F7FF)
  62 #define SET_SEL_TEMP_V_1        (gpio->PCDAT |= 0x00800)
  63
  64 #define CON_SEL_TEMP_V_2        (gpio->PCCON = (gpio->PCCON & 0x0FCFFFFFF) | 0x01000000)
  65 #define CLR_SEL_TEMP_V_2        (gpio->PCDAT &= 0x0EFFF)
  66 #define SET_SEL_TEMP_V_2        (gpio->PCDAT |= 0x01000)
  67
  68 #define CON_SEL_TEMP_V_3        (gpio->PCCON = (gpio->PCCON & 0x0F3FFFFFF) | 0x04000000)
  69 #define CLR_SEL_TEMP_V_3        (gpio->PCDAT &= 0x0DFFF)
  70 #define SET_SEL_TEMP_V_3        (gpio->PCDAT |= 0x02000)
  71
  72 /* TSC2000 register definition */
  73 #define TSC2000_REG_X           ((0 << 11) | (0 << 5))
  74 #define TSC2000_REG_Y           ((0 << 11) | (1 << 5))
  75 #define TSC2000_REG_Z1          ((0 << 11) | (2 << 5))
  76 #define TSC2000_REG_Z2          ((0 << 11) | (3 << 5))
  77 #define TSC2000_REG_BAT1        ((0 << 11) | (5 << 5))
  78 #define TSC2000_REG_BAT2        ((0 << 11) | (6 << 5))
  79 #define TSC2000_REG_AUX1        ((0 << 11) | (7 << 5))
  80 #define TSC2000_REG_AUX2        ((0 << 11) | (8 << 5))
  81 #define TSC2000_REG_TEMP1       ((0 << 11) | (9 << 5))
  82 #define TSC2000_REG_TEMP2       ((0 << 11) | (0xA << 5))
  83 #define TSC2000_REG_DAC         ((0 << 11) | (0xB << 5))
  84 #define TSC2000_REG_ZERO        ((0 << 11) | (0x10 << 5))
  85 #define TSC2000_REG_ADC         ((1 << 11) | (0 << 5))
  86 #define TSC2000_REG_DACCTL      ((1 << 11) | (2 << 5))
  87 #define TSC2000_REG_REF         ((1 << 11) | (3 << 5))
  88 #define TSC2000_REG_RESET       ((1 << 11) | (4 << 5))
  89 #define TSC2000_REG_CONFIG      ((1 << 11) | (5 << 5))
  90
  91 /* bit definition of TSC2000 ADC register */
  92 #define TC_PSM                  (1 << 15)
  93 #define TC_STS                  (1 << 14)
  94 #define TC_AD3                  (1 << 13)
  95 #define TC_AD2                  (1 << 12)
  96 #define TC_AD1                  (1 << 11)
  97 #define TC_AD0                  (1 << 10)
  98 #define TC_RS1                  (1 << 9)
  99 #define TC_RS0                  (1 << 8)
 100 #define TC_AV1                  (1 << 7)
 101 #define TC_AV0                  (1 << 6)
 102 #define TC_CL1                  (1 << 5)
 103 #define TC_CL0                  (1 << 4)
 104 #define TC_PV2                  (1 << 3)
 105 #define TC_PV1                  (1 << 2)
 106 #define TC_PV0                  (1 << 1)
 107
 108 /* default value for TSC2000 ADC register for use with touch functions */
 109 #define DEFAULT_ADC             (TC_PV1 | TC_AV0 | TC_AV1 | TC_RS0)
 110
 111 #define TSC2000_DELAY_BASE      500
 112 #define TSC2000_NO_SENSOR       -0x10000
 113
 114 #define ERROR_BATTERY           220     /* must be adjusted, if R68 is changed on TRAB */
 115
 116 void tsc2000_write(unsigned short, unsigned short);
 117 unsigned short tsc2000_read (unsigned short);
 118 u16 tsc2000_read_channel (unsigned int);
 119 void tsc2000_set_mux (unsigned int);
 120 void tsc2000_set_range (unsigned int);
 121 void tsc2000_reg_init (void);
 122 s32 tsc2000_contact_temp (void);
 123 void spi_wait_transmit_done (void);
 124 void spi_init(void);
 125 int tsc2000_interpolate(long value, long data[][2], long *result);
 126 void adc_wait_conversion_done(void);
 127
 128
 129 static inline void SET_CS_TOUCH(void)
 130 {
 131         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
 132
 133         gpio->PDDAT &= 0x5FF;
 134 }
 135
 136
 137 static inline void CLR_CS_TOUCH(void)
 138 {
 139         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
 140
 141         gpio->PDDAT |= 0x200;
 142 }
 143
 144 #endif  /* _TSC2000_H_ */