diff options
| -rw-r--r-- | hw/nseries.c | 1 | ||||
| -rw-r--r-- | hw/tsc2005.c | 601 |
2 files changed, 602 insertions, 0 deletions
diff --git a/hw/nseries.c b/hw/nseries.c index 8d578fcb19..a3af41c193 100644 --- a/hw/nseries.c +++ b/hw/nseries.c @@ -1031,4 +1031,5 @@ QEMUMachine n810_machine = { "n810", "Nokia N810 tablet aka. RX-44 (OMAP2420)", n810_init, + (0x08000000 + 0x00010000 + OMAP242X_SRAM_SIZE) | RAMSIZE_FIXED, }; diff --git a/hw/tsc2005.c b/hw/tsc2005.c new file mode 100644 index 0000000000..aeef59f908 --- /dev/null +++ b/hw/tsc2005.c @@ -0,0 +1,601 @@ +/* + * TI TSC2005 emulator. + * + * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> + * Copyright (C) 2008 Nokia Corporation + * + * 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 or + * (at your option) version 3 of the License. + * + * 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 "hw.h" +#include "qemu-timer.h" +#include "console.h" +#include "omap.h" + +#define TSC_DATA_REGISTERS_PAGE 0x0 +#define TSC_CONTROL_REGISTERS_PAGE 0x1 +#define TSC_AUDIO_REGISTERS_PAGE 0x2 + +#define TSC_VERBOSE + +#define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - (p ? 12 : 10))) + +struct tsc2005_state_s { + qemu_irq pint; /* Combination of the nPENIRQ and DAV signals */ + QEMUTimer *timer; + uint16_t model; + + int x, y; + int pressure; + + int state, reg, irq, command; + uint16_t data, dav; + + int busy; + int enabled; + int host_mode; + int function; + int nextfunction; + int precision; + int nextprecision; + int filter; + int pin_func; + int timing[2]; + int noise; + int reset; + int pdst; + int pnd0; + uint16_t temp_thr[2]; + uint16_t aux_thr[2]; + + int tr[8]; +}; + +enum { + TSC_MODE_XYZ_SCAN = 0x0, + TSC_MODE_XY_SCAN, + TSC_MODE_X, + TSC_MODE_Y, + TSC_MODE_Z, + TSC_MODE_AUX, + TSC_MODE_TEMP1, + TSC_MODE_TEMP2, + TSC_MODE_AUX_SCAN, + TSC_MODE_X_TEST, + TSC_MODE_Y_TEST, + TSC_MODE_TS_TEST, + TSC_MODE_RESERVED, + TSC_MODE_XX_DRV, + TSC_MODE_YY_DRV, + TSC_MODE_YX_DRV, +}; + +static const uint16_t mode_regs[16] = { + 0xf000, /* X, Y, Z scan */ + 0xc000, /* X, Y scan */ + 0x8000, /* X */ + 0x4000, /* Y */ + 0x3000, /* Z */ + 0x0800, /* AUX */ + 0x0400, /* TEMP1 */ + 0x0200, /* TEMP2 */ + 0x0800, /* AUX scan */ + 0x0040, /* X test */ + 0x0020, /* Y test */ + 0x0080, /* Short-circuit test */ + 0x0000, /* Reserved */ + 0x0000, /* X+, X- drivers */ + 0x0000, /* Y+, Y- drivers */ + 0x0000, /* Y+, X- drivers */ +}; + +#define X_TRANSFORM(s) \ + ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3]) +#define Y_TRANSFORM(s) \ + ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7]) +#define Z1_TRANSFORM(s) \ + ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4) +#define Z2_TRANSFORM(s) \ + ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4) + +#define AUX_VAL (700 << 4) /* +/- 3 at 12-bit */ +#define TEMP1_VAL (1264 << 4) /* +/- 5 at 12-bit */ +#define TEMP2_VAL (1531 << 4) /* +/- 5 at 12-bit */ + +#define TSC_POWEROFF_DELAY 50 +#define TSC_SOFTSTEP_DELAY 50 + +static uint16_t tsc2005_read(struct tsc2005_state_s *s, int reg) +{ + uint16_t ret; + + switch (reg) { + case 0x0: /* X */ + s->dav &= ~mode_regs[TSC_MODE_X]; + return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) + + (s->noise & 3); + case 0x1: /* Y */ + s->dav &= ~mode_regs[TSC_MODE_Y]; + s->noise ++; + return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^ + (s->noise & 3); + case 0x2: /* Z1 */ + s->dav &= 0xdfff; + return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) - + (s->noise & 3); + case 0x3: /* Z2 */ + s->dav &= 0xefff; + return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) | + (s->noise & 3); + + case 0x4: /* AUX */ + s->dav &= ~mode_regs[TSC_MODE_AUX]; + return TSC_CUT_RESOLUTION(AUX_VAL, s->precision); + + case 0x5: /* TEMP1 */ + s->dav &= ~mode_regs[TSC_MODE_TEMP1]; + return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) - + (s->noise & 5); + case 0x6: /* TEMP2 */ + s->dav &= 0xdfff; + s->dav &= ~mode_regs[TSC_MODE_TEMP2]; + return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^ + (s->noise & 3); + + case 0x7: /* Status */ + ret = s->dav | (s->reset << 7) | (s->pdst << 2) | 0x0; + s->dav &= ~(mode_regs[TSC_MODE_X_TEST] | mode_regs[TSC_MODE_Y_TEST] | + mode_regs[TSC_MODE_TS_TEST]); + s->reset = 1; + return ret; + + case 0x8: /* AUX high treshold */ + return s->aux_thr[1]; + case 0x9: /* AUX low treshold */ + return s->aux_thr[0]; + + case 0xa: /* TEMP high treshold */ + return s->temp_thr[1]; + case 0xb: /* TEMP low treshold */ + return s->temp_thr[0]; + + case 0xc: /* CFR0 */ + return (s->pressure << 15) | ((!s->busy) << 14) | + (s->nextprecision << 13) | s->timing[0]; + case 0xd: /* CFR1 */ + return s->timing[1]; + case 0xe: /* CFR2 */ + return (s->pin_func << 14) | s->filter; + + case 0xf: /* Function select status */ + return s->function >= 0 ? 1 << s->function : 0; + } + + /* Never gets here */ + return 0xffff; +} + +static void tsc2005_write(struct tsc2005_state_s *s, int reg, uint16_t data) +{ + switch (reg) { + case 0x8: /* AUX high treshold */ + s->aux_thr[1] = data; + break; + case 0x9: /* AUX low treshold */ + s->aux_thr[0] = data; + break; + + case 0xa: /* TEMP high treshold */ + s->temp_thr[1] = data; + break; + case 0xb: /* TEMP low treshold */ + s->temp_thr[0] = data; + break; + + case 0xc: /* CFR0 */ + s->host_mode = data >> 15; + s->enabled = !(data & 0x4000); + if (s->busy && !s->enabled) + qemu_del_timer(s->timer); + s->busy &= s->enabled; + s->nextprecision = (data >> 13) & 1; + s->timing[0] = data & 0x1fff; + if ((s->timing[0] >> 11) == 3) + fprintf(stderr, "%s: illegal conversion clock setting\n", + __FUNCTION__); + break; + case 0xd: /* CFR1 */ + s->timing[1] = data & 0xf07; + break; + case 0xe: /* CFR2 */ + s->pin_func = (data >> 14) & 3; + s->filter = data & 0x3fff; + break; + + default: + fprintf(stderr, "%s: write into read-only register %x\n", + __FUNCTION__, reg); + } +} + +/* This handles most of the chip's logic. */ +static void tsc2005_pin_update(struct tsc2005_state_s *s) +{ + int64_t expires; + int pin_state; + + switch (s->pin_func) { + case 0: + pin_state = !s->pressure && !!s->dav; + break; + case 1: + case 3: + default: + pin_state = !s->dav; + break; + case 2: + pin_state = !s->pressure; + } + + if (!s->enabled) + pin_state = 0; + + if (pin_state != s->irq) { + s->irq = pin_state; + qemu_set_irq(s->pint, s->irq); + } + + switch (s->nextfunction) { + case TSC_MODE_XYZ_SCAN: + case TSC_MODE_XY_SCAN: + if (!s->pressure) + return; + /* Fall through */ + case TSC_MODE_AUX_SCAN: + break; + + case TSC_MODE_X: + case TSC_MODE_Y: + case TSC_MODE_Z: + if (!s->pressure) + return; + /* Fall through */ + case TSC_MODE_AUX: + case TSC_MODE_TEMP1: + case TSC_MODE_TEMP2: + case TSC_MODE_X_TEST: + case TSC_MODE_Y_TEST: + case TSC_MODE_TS_TEST: + if (s->dav) + s->enabled = 0; + break; + + case TSC_MODE_RESERVED: + case TSC_MODE_XX_DRV: + case TSC_MODE_YY_DRV: + case TSC_MODE_YX_DRV: + default: + return; + } + + if (!s->enabled || s->busy) + return; + + s->busy = 1; + s->precision = s->nextprecision; + s->function = s->nextfunction; + s->pdst = !s->pnd0; /* Synchronised on internal clock */ + expires = qemu_get_clock(vm_clock) + (ticks_per_sec >> 7); + qemu_mod_timer(s->timer, expires); +} + +static void tsc2005_reset(struct tsc2005_state_s *s) +{ + s->state = 0; + s->pin_func = 0; + s->enabled = 0; + s->busy = 0; + s->nextprecision = 0; + s->nextfunction = 0; + s->timing[0] = 0; + s->timing[1] = 0; + s->irq = 0; + s->dav = 0; + s->reset = 0; + s->pdst = 1; + s->pnd0 = 0; + s->function = -1; + s->temp_thr[0] = 0x000; + s->temp_thr[1] = 0xfff; + s->aux_thr[0] = 0x000; + s->aux_thr[1] = 0xfff; + + tsc2005_pin_update(s); +} + +uint8_t tsc2005_txrx_word(void *opaque, uint8_t value) +{ + struct tsc2005_state_s *s = opaque; + uint32_t ret = 0; + + switch (s->state ++) { + case 0: + if (value & 0x80) { + /* Command */ + if (value & (1 << 1)) + tsc2005_reset(s); + else { + s->nextfunction = (value >> 3) & 0xf; + s->nextprecision = (value >> 2) & 1; + if (s->enabled != !(value & 1)) { + s->enabled = !(value & 1); + fprintf(stderr, "%s: touchscreen sense %sabled\n", + __FUNCTION__, s->enabled ? "en" : "dis"); + } + tsc2005_pin_update(s); + } + + s->state = 0; + } else if (value) { + /* Data transfer */ + s->reg = (value >> 3) & 0xf; + s->pnd0 = (value >> 1) & 1; + s->command = value & 1; + + if (s->command) { + /* Read */ + s->data = tsc2005_read(s, s->reg); + tsc2005_pin_update(s); + } else + s->data = 0; + } else + s->state = 0; + break; + + case 1: + if (s->command) + ret = (s->data >> 8) & 0xff; + else + s->data |= value << 8; + break; + + case 2: + if (s->command) + ret = s->data & 0xff; + else { + s->data |= value; + tsc2005_write(s, s->reg, s->data); + tsc2005_pin_update(s); + } + + s->state = 0; + break; + } + + return ret; +} + +uint32_t tsc2005_txrx(void *opaque, uint32_t value, int len) +{ + uint32_t ret = 0; + + len &= ~7; + while (len > 0) { + len -= 8; + ret |= tsc2005_txrx_word(opaque, (value >> len) & 0xff) << len; + } + + return ret; +} + +static void tsc2005_timer_tick(void *opaque) +{ + struct tsc2005_state_s *s = opaque; + + /* Timer ticked -- a set of conversions has been finished. */ + + if (!s->busy) + return; + + s->busy = 0; + s->dav |= mode_regs[s->function]; + s->function = -1; + tsc2005_pin_update(s); +} + +static void tsc2005_touchscreen_event(void *opaque, + int x, int y, int z, int buttons_state) +{ + struct tsc2005_state_s *s = opaque; + int p = s->pressure; + + if (buttons_state) { + s->x = x; + s->y = y; + } + s->pressure = !!buttons_state; + + /* + * Note: We would get better responsiveness in the guest by + * signaling TS events immediately, but for now we simulate + * the first conversion delay for sake of correctness. + */ + if (p != s->pressure) + tsc2005_pin_update(s); +} + +static void tsc2005_save(QEMUFile *f, void *opaque) +{ + struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; + int i; + + qemu_put_be16(f, s->x); + qemu_put_be16(f, s->y); + qemu_put_byte(f, s->pressure); + + qemu_put_byte(f, s->state); + qemu_put_byte(f, s->reg); + qemu_put_byte(f, s->command); + + qemu_put_byte(f, s->irq); + qemu_put_be16s(f, &s->dav); + qemu_put_be16s(f, &s->data); + + qemu_put_timer(f, s->timer); + qemu_put_byte(f, s->enabled); + qemu_put_byte(f, s->host_mode); + qemu_put_byte(f, s->function); + qemu_put_byte(f, s->nextfunction); + qemu_put_byte(f, s->precision); + qemu_put_byte(f, s->nextprecision); + qemu_put_be16(f, s->filter); + qemu_put_byte(f, s->pin_func); + qemu_put_be16(f, s->timing[0]); + qemu_put_be16(f, s->timing[1]); + qemu_put_be16s(f, &s->temp_thr[0]); + qemu_put_be16s(f, &s->temp_thr[1]); + qemu_put_be16s(f, &s->aux_thr[0]); + qemu_put_be16s(f, &s->aux_thr[1]); + qemu_put_be32(f, s->noise); + qemu_put_byte(f, s->reset); + qemu_put_byte(f, s->pdst); + qemu_put_byte(f, s->pnd0); + + for (i = 0; i < 8; i ++) + qemu_put_be32(f, s->tr[i]); +} + +static int tsc2005_load(QEMUFile *f, void *opaque, int version_id) +{ + struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; + int i; + + s->x = qemu_get_be16(f); + s->y = qemu_get_be16(f); + s->pressure = qemu_get_byte(f); + + s->state = qemu_get_byte(f); + s->reg = qemu_get_byte(f); + s->command = qemu_get_byte(f); + + s->irq = qemu_get_byte(f); + qemu_get_be16s(f, &s->dav); + qemu_get_be16s(f, &s->data); + + qemu_get_timer(f, s->timer); + s->enabled = qemu_get_byte(f); + s->host_mode = qemu_get_byte(f); + s->function = qemu_get_byte(f); + s->nextfunction = qemu_get_byte(f); + s->precision = qemu_get_byte(f); + s->nextprecision = qemu_get_byte(f); + s->filter = qemu_get_be16(f); + s->pin_func = qemu_get_byte(f); + s->timing[0] = qemu_get_be16(f); + s->timing[1] = qemu_get_be16(f); + qemu_get_be16s(f, &s->temp_thr[0]); + qemu_get_be16s(f, &s->temp_thr[1]); + qemu_get_be16s(f, &s->aux_thr[0]); + qemu_get_be16s(f, &s->aux_thr[1]); + s->noise = qemu_get_be32(f); + s->reset = qemu_get_byte(f); + s->pdst = qemu_get_byte(f); + s->pnd0 = qemu_get_byte(f); + + for (i = 0; i < 8; i ++) + s->tr[i] = qemu_get_be32(f); + + s->busy = qemu_timer_pending(s->timer); + tsc2005_pin_update(s); + + return 0; +} + +static int tsc2005_iid = 0; + +void *tsc2005_init(qemu_irq pintdav) +{ + struct tsc2005_state_s *s; + + s = (struct tsc2005_state_s *) + qemu_mallocz(sizeof(struct tsc2005_state_s)); + s->x = 400; + s->y = 240; + s->pressure = 0; + s->precision = s->nextprecision = 0; + s->timer = qemu_new_timer(vm_clock, tsc2005_timer_tick, s); + s->pint = pintdav; + s->model = 0x2005; + + s->tr[0] = 0; + s->tr[1] = 1; + s->tr[2] = 1; + s->tr[3] = 0; + s->tr[4] = 1; + s->tr[5] = 0; + s->tr[6] = 1; + s->tr[7] = 0; + + tsc2005_reset(s); + + qemu_add_mouse_event_handler(tsc2005_touchscreen_event, s, 1, + "QEMU TSC2005-driven Touchscreen"); + + qemu_register_reset((void *) tsc2005_reset, s); + register_savevm("tsc2005", tsc2005_iid ++, 0, + tsc2005_save, tsc2005_load, s); + + return s; +} + +/* + * Use tslib generated calibration data to generate ADC input values + * from the touchscreen. Assuming 12-bit precision was used during + * tslib calibration. + */ +void tsc2005_set_transform(void *opaque, struct mouse_transform_info_s *info) +{ + struct tsc2005_state_s *s = (struct tsc2005_state_s *) opaque; + + /* This version assumes touchscreen X & Y axis are parallel or + * perpendicular to LCD's X & Y axis in some way. */ + if (abs(info->a[0]) > abs(info->a[1])) { + s->tr[0] = 0; + s->tr[1] = -info->a[6] * info->x; + s->tr[2] = info->a[0]; + s->tr[3] = -info->a[2] / info->a[0]; + s->tr[4] = info->a[6] * info->y; + s->tr[5] = 0; + s->tr[6] = info->a[4]; + s->tr[7] = -info->a[5] / info->a[4]; + } else { + s->tr[0] = info->a[6] * info->y; + s->tr[1] = 0; + s->tr[2] = info->a[1]; + s->tr[3] = -info->a[2] / info->a[1]; + s->tr[4] = 0; + s->tr[5] = -info->a[6] * info->x; + s->tr[6] = info->a[3]; + s->tr[7] = -info->a[5] / info->a[3]; + } + + s->tr[0] >>= 11; + s->tr[1] >>= 11; + s->tr[3] <<= 4; + s->tr[4] >>= 11; + s->tr[5] >>= 11; + s->tr[7] <<= 4; +} |