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Diffstat (limited to 'board/trab/tsc2000.h')
| -rw-r--r-- | board/trab/tsc2000.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/board/trab/tsc2000.h b/board/trab/tsc2000.h new file mode 100644 index 0000000..4f11869 --- /dev/null +++ b/board/trab/tsc2000.h @@ -0,0 +1,147 @@ +/* + * Functions to access the TSC2000 controller on TRAB board (used for scanning + * thermo sensors) + * + * Copyright (C) 2003 Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de + * + * Copyright (C) 2002 DENX Software Engineering, Wolfgang Denk, wd@denx.de + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + */ + +#ifndef _TSC2000_H_ +#define _TSC2000_H_ + +#include "Pt1000_temp_data.h" + +/* temperature channel multiplexer definitions */ +#define CON_MUX0 (gpio->PCCON = (gpio->PCCON & 0x0FFFFFCFF) | 0x00000100) +#define CLR_MUX0 (gpio->PCDAT &= 0x0FFEF) +#define SET_MUX0 (gpio->PCDAT |= 0x00010) + +#define CON_MUX1 (gpio->PCCON = (gpio->PCCON & 0x0FFFFF3FF) | 0x00000400) +#define CLR_MUX1 (gpio->PCDAT &= 0x0FFDF) +#define SET_MUX1 (gpio->PCDAT |= 0x00020) + +#define CON_MUX1_ENABLE (gpio->PCCON = (gpio->PCCON & 0x0FFFFCFFF) | 0x00001000) +#define CLR_MUX1_ENABLE (gpio->PCDAT |= 0x00040) +#define SET_MUX1_ENABLE (gpio->PCDAT &= 0x0FFBF) + +#define CON_MUX2_ENABLE (gpio->PCCON = (gpio->PCCON & 0x0FFFF3FFF) | 0x00004000) +#define CLR_MUX2_ENABLE (gpio->PCDAT |= 0x00080) +#define SET_MUX2_ENABLE (gpio->PCDAT &= 0x0FF7F) + +#define CON_MUX3_ENABLE (gpio->PCCON = (gpio->PCCON & 0x0FFFCFFFF) | 0x00010000) +#define CLR_MUX3_ENABLE (gpio->PCDAT |= 0x00100) +#define SET_MUX3_ENABLE (gpio->PCDAT &= 0x0FEFF) + +#define CON_MUX4_ENABLE (gpio->PCCON = (gpio->PCCON & 0x0FFF3FFFF) | 0x00040000) +#define CLR_MUX4_ENABLE (gpio->PCDAT |= 0x00200) +#define SET_MUX4_ENABLE (gpio->PCDAT &= 0x0FDFF) + +#define CON_SEL_TEMP_V_0 (gpio->PCCON = (gpio->PCCON & 0x0FFCFFFFF) | 0x00100000) +#define CLR_SEL_TEMP_V_0 (gpio->PCDAT &= 0x0FBFF) +#define SET_SEL_TEMP_V_0 (gpio->PCDAT |= 0x00400) + +#define CON_SEL_TEMP_V_1 (gpio->PCCON = (gpio->PCCON & 0x0FF3FFFFF) | 0x00400000) +#define CLR_SEL_TEMP_V_1 (gpio->PCDAT &= 0x0F7FF) +#define SET_SEL_TEMP_V_1 (gpio->PCDAT |= 0x00800) + +#define CON_SEL_TEMP_V_2 (gpio->PCCON = (gpio->PCCON & 0x0FCFFFFFF) | 0x01000000) +#define CLR_SEL_TEMP_V_2 (gpio->PCDAT &= 0x0EFFF) +#define SET_SEL_TEMP_V_2 (gpio->PCDAT |= 0x01000) + +#define CON_SEL_TEMP_V_3 (gpio->PCCON = (gpio->PCCON & 0x0F3FFFFFF) | 0x04000000) +#define CLR_SEL_TEMP_V_3 (gpio->PCDAT &= 0x0DFFF) +#define SET_SEL_TEMP_V_3 (gpio->PCDAT |= 0x02000) + +/* TSC2000 register definition */ +#define TSC2000_REG_X ((0 << 11) | (0 << 5)) +#define TSC2000_REG_Y ((0 << 11) | (1 << 5)) +#define TSC2000_REG_Z1 ((0 << 11) | (2 << 5)) +#define TSC2000_REG_Z2 ((0 << 11) | (3 << 5)) +#define TSC2000_REG_BAT1 ((0 << 11) | (5 << 5)) +#define TSC2000_REG_BAT2 ((0 << 11) | (6 << 5)) +#define TSC2000_REG_AUX1 ((0 << 11) | (7 << 5)) +#define TSC2000_REG_AUX2 ((0 << 11) | (8 << 5)) +#define TSC2000_REG_TEMP1 ((0 << 11) | (9 << 5)) +#define TSC2000_REG_TEMP2 ((0 << 11) | (0xA << 5)) +#define TSC2000_REG_DAC ((0 << 11) | (0xB << 5)) +#define TSC2000_REG_ZERO ((0 << 11) | (0x10 << 5)) +#define TSC2000_REG_ADC ((1 << 11) | (0 << 5)) +#define TSC2000_REG_DACCTL ((1 << 11) | (2 << 5)) +#define TSC2000_REG_REF ((1 << 11) | (3 << 5)) +#define TSC2000_REG_RESET ((1 << 11) | (4 << 5)) +#define TSC2000_REG_CONFIG ((1 << 11) | (5 << 5)) + +/* bit definition of TSC2000 ADC register */ +#define TC_PSM (1 << 15) +#define TC_STS (1 << 14) +#define TC_AD3 (1 << 13) +#define TC_AD2 (1 << 12) +#define TC_AD1 (1 << 11) +#define TC_AD0 (1 << 10) +#define TC_RS1 (1 << 9) +#define TC_RS0 (1 << 8) +#define TC_AV1 (1 << 7) +#define TC_AV0 (1 << 6) +#define TC_CL1 (1 << 5) +#define TC_CL0 (1 << 4) +#define TC_PV2 (1 << 3) +#define TC_PV1 (1 << 2) +#define TC_PV0 (1 << 1) + +/* default value for TSC2000 ADC register for use with touch functions */ +#define DEFAULT_ADC (TC_PV1 | TC_AV0 | TC_AV1 | TC_RS0) + +#define TSC2000_DELAY_BASE 500 +#define TSC2000_NO_SENSOR -0x10000 + +#define ERROR_BATTERY 220 /* must be adjusted, if R68 is changed on + * TRAB */ + +static void tsc2000_write(unsigned short, unsigned short); +static unsigned short tsc2000_read (unsigned short); +static u16 tsc2000_read_channel (unsigned int); +static void tsc2000_set_mux (unsigned int); +static void tsc2000_set_range (unsigned int); +void tsc2000_reg_init (void); +s32 tsc2000_contact_temp (void); +static void spi_wait_transmit_done (void); +void spi_init(void); +static int tsc2000_interpolate(long value, long data[][2], long *result); +static void adc_wait_conversion_done(void); + + +static inline void SET_CS_TOUCH(void) +{ + S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); + + gpio->PDDAT &= 0x5FF; +} + + +static inline void CLR_CS_TOUCH(void) +{ + S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); + + gpio->PDDAT |= 0x200; +} + +#endif /* _TSC2000_H_ */ |