Index: uspace/Makefile =================================================================== --- uspace/Makefile (revision 07c66cf78362ee9aa313f660d3789cbed9c001e3) +++ uspace/Makefile (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) @@ -66,4 +66,5 @@ srv/hid/adb_mouse \ srv/hid/char_mouse \ + srv/hid/s3c24xx_ts \ srv/hid/fb \ srv/hid/kbd \ Index: uspace/app/init/init.c =================================================================== --- uspace/app/init/init.c (revision 07c66cf78362ee9aa313f660d3789cbed9c001e3) +++ uspace/app/init/init.c (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) @@ -277,4 +277,5 @@ srv_start("/srv/adb_ms"); srv_start("/srv/char_ms"); + srv_start("/srv/s3c24ts"); spawn("/srv/fb"); Index: uspace/srv/hid/s3c24xx_ts/Makefile =================================================================== --- uspace/srv/hid/s3c24xx_ts/Makefile (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) +++ uspace/srv/hid/s3c24xx_ts/Makefile (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) @@ -0,0 +1,37 @@ +# +# Copyright (c) 2010 Jiri Svoboda +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +USPACE_PREFIX = ../../.. + +# Need to use short name because of FAT 8+3 limit +BINARY = s3c24ts + +SOURCES = \ + s3c24xx_ts.c + +include $(USPACE_PREFIX)/Makefile.common Index: uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.c =================================================================== --- uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.c (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) +++ uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.c (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) @@ -0,0 +1,408 @@ +/* + * Copyright (c) 2010 Jiri Svoboda + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup mouse + * @{ + */ +/** + * @file + * @brief Samsung Samsung S3C24xx on-chip ADC and touch-screen interface driver. + * + * This interface is present on the Samsung S3C24xx CPU (on the gta02 platform). + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "s3c24xx_ts.h" + +#define NAME "s3c24ser" +#define NAMESPACE "hid_in" + +static irq_cmd_t ts_irq_cmds[] = { + { + .cmd = CMD_ACCEPT + } +}; + +static irq_code_t ts_irq_code = { + sizeof(ts_irq_cmds) / sizeof(irq_cmd_t), + ts_irq_cmds +}; + +/** S3C24xx touchscreen instance structure */ +static s3c24xx_ts_t *ts; + +static void s3c24xx_ts_connection(ipc_callid_t iid, ipc_call_t *icall); +static void s3c24xx_ts_irq_handler(ipc_callid_t iid, ipc_call_t *call); +static void s3c24xx_ts_pen_down(s3c24xx_ts_t *ts); +static void s3c24xx_ts_pen_up(s3c24xx_ts_t *ts); +static void s3c24xx_ts_eoc(s3c24xx_ts_t *ts); +static int s3c24xx_ts_init(s3c24xx_ts_t *ts); +static void s3c24xx_ts_wait_for_int_mode(s3c24xx_ts_t *ts, ts_updn_t updn); +static void s3c24xx_ts_convert_samples(int smp0, int smp1, int *x, int *y); +static int lin_map_range(int v, int i0, int i1, int o0, int o1); + +int main(int argc, char *argv[]) +{ + int rc; + + printf(NAME ": S3C24xx touchscreen driver\n"); + + rc = devmap_driver_register(NAME, s3c24xx_ts_connection); + if (rc < 0) { + printf(NAME ": Unable to register driver.\n"); + return -1; + } + + ts = malloc(sizeof(s3c24xx_ts_t)); + if (ts == NULL) + return -1; + + if (s3c24xx_ts_init(ts) != EOK) + return -1; + + rc = devmap_device_register(NAMESPACE "/mouse", &ts->dev_handle); + if (rc != EOK) { + devmap_hangup_phone(DEVMAP_DRIVER); + printf(NAME ": Unable to register device %s.\n", + NAMESPACE "/mouse"); + return -1; + } + + printf(NAME ": Registered device %s.\n", NAMESPACE "/mouse"); + + printf(NAME ": Accepting connections\n"); + task_retval(0); + async_manager(); + + /* Not reached */ + return 0; +} + +/** Initialize S3C24xx touchscreen interface. */ +static int s3c24xx_ts_init(s3c24xx_ts_t *ts) +{ + void *vaddr; + sysarg_t inr; + + inr = S3C24XX_TS_INR; + ts->paddr = S3C24XX_TS_ADDR; + + if (pio_enable((void *) ts->paddr, sizeof(s3c24xx_adc_io_t), + &vaddr) != 0) + return -1; + + ts->io = vaddr; + ts->client_phone = -1; + ts->state = ts_wait_pendown; + ts->last_x = 0; + ts->last_y = 0; + + printf(NAME ": device at physical address 0x%x, inr %d.\n", + ts->paddr, inr); + + async_set_interrupt_received(s3c24xx_ts_irq_handler); + ipc_register_irq(inr, device_assign_devno(), 0, &ts_irq_code); + + s3c24xx_ts_wait_for_int_mode(ts, updn_down); + + return EOK; +} + +/** Switch interface to wait for interrupt mode. + * + * In this mode we receive an interrupt when pen goes up/down, depending + * on @a updn. + * + * @param ts Touchscreen instance + * @param updn @c updn_up to wait for pen up, @c updn_down to wait for pen + * down. + */ +static void s3c24xx_ts_wait_for_int_mode(s3c24xx_ts_t *ts, ts_updn_t updn) +{ + uint32_t con, tsc; + + /* + * Configure ADCCON register + */ + + con = pio_read_32(&ts->io->con); + + /* Disable standby, disable start-by-read, clear manual start bit */ + con = con & ~(ADCCON_STDBM | ADCCON_READ_START | ADCCON_ENABLE_START); + + /* Set prescaler value 0xff, XP for input. */ + con = con | (ADCCON_PRSCVL(0xff) << 6) | ADCCON_SEL_MUX(SMUX_XP); + + /* Enable prescaler. */ + con = con | ADCCON_PRSCEN; + + pio_write_32(&ts->io->con, con); + + /* + * Configure ADCTSC register + */ + + tsc = pio_read_32(&ts->io->tsc); + + /* Select whether waiting for pen up or pen down. */ + if (updn == updn_up) + tsc |= ADCTSC_DSUD_UP; + else + tsc &= ~ADCTSC_DSUD_UP; + + /* + * Enable XP pull-up and disable all drivers except YM. This is + * according to the manual. This gives us L on XP input when touching + * and (pulled up to) H when not touching. + */ + tsc = tsc & ~(ADCTSC_XM_ENABLE | ADCTSC_AUTO_PST | + ADCTSC_PULLUP_DISABLE); + tsc = tsc | ADCTSC_YP_DISABLE | ADCTSC_XP_DISABLE | ADCTSC_YM_ENABLE; + + /* Select wait-for-interrupt mode. */ + tsc = (tsc & ~ADCTSC_XY_PST_MASK) | ADCTSC_XY_PST_WAITINT; + + pio_write_32(&ts->io->tsc, tsc); +} + +/** Handle touchscreen interrupt */ +static void s3c24xx_ts_irq_handler(ipc_callid_t iid, ipc_call_t *call) +{ + ts_updn_t updn; + + (void) iid; (void) call; + + /* Read up/down interrupt flags. */ + updn = pio_read_32(&ts->io->updn); + + if (updn & (ADCUPDN_TSC_DN | ADCUPDN_TSC_UP)) { + /* Clear up/down interrupt flags. */ + pio_write_32(&ts->io->updn, updn & + ~(ADCUPDN_TSC_DN | ADCUPDN_TSC_UP)); + } + + if (updn & ADCUPDN_TSC_DN) { + /* Pen-down interrupt */ + s3c24xx_ts_pen_down(ts); + } else if (updn & ADCUPDN_TSC_UP) { + /* Pen-up interrupt */ + s3c24xx_ts_pen_up(ts); + } else { + /* Presumably end-of-conversion interrupt */ + + /* Check end-of-conversion flag. */ + if ((pio_read_32(&ts->io->con) & ADCCON_ECFLG) == 0) { + printf(NAME ": Unrecognized ts int.\n"); + return; + } + + if (ts->state != ts_sample_pos) { + /* + * We got an extra interrupt ater switching to + * wait for interrupt mode. + */ + return; + } + + /* End-of-conversion interrupt */ + s3c24xx_ts_eoc(ts); + } +} + +/** Handle pen-down interrupt. + * + * @param ts Touchscreen instance + */ +static void s3c24xx_ts_pen_down(s3c24xx_ts_t *ts) +{ + /* Pen-down interrupt */ + + ts->state = ts_sample_pos; + + /* Enable auto xy-conversion mode */ + pio_write_32(&ts->io->tsc, (pio_read_32(&ts->io->tsc) + & ~3) | 4); + + /* Start the conversion. */ + pio_write_32(&ts->io->con, pio_read_32(&ts->io->con) + | ADCCON_ENABLE_START); +} + +/** Handle pen-up interrupt. + * + * @param ts Touchscreen instance + */ +static void s3c24xx_ts_pen_up(s3c24xx_ts_t *ts) +{ + int button, press; + + /* Pen-up interrupt */ + + ts->state = ts_wait_pendown; + + button = 1; + press = 0; + async_msg_2(ts->client_phone, MEVENT_BUTTON, button, press); + + s3c24xx_ts_wait_for_int_mode(ts, updn_down); +} + +/** Handle end-of-conversion interrupt. + * + * @param ts Touchscreen instance + */ +static void s3c24xx_ts_eoc(s3c24xx_ts_t *ts) +{ + uint32_t data; + int button, press; + int smp0, smp1; + int x_pos, y_pos; + int dx, dy; + + ts->state = ts_wait_penup; + + /* Read in sampled data. */ + + data = pio_read_32(&ts->io->dat0); + smp0 = data & 0x3ff; + + data = pio_read_32(&ts->io->dat1); + smp1 = data & 0x3ff; + + /* Convert to screen coordinates. */ + s3c24xx_ts_convert_samples(smp0, smp1, &x_pos, &y_pos); + + printf("s0: 0x%03x, s1:0x%03x -> x:%d,y:%d\n", smp0, smp1, + x_pos, y_pos); + + /* Get differences. */ + dx = x_pos - ts->last_x; + dy = y_pos - ts->last_y; + + button = 1; + press = 1; + + /* Send notifications to client. */ + async_msg_2(ts->client_phone, MEVENT_MOVE, dx, dy); + async_msg_2(ts->client_phone, MEVENT_BUTTON, button, press); + + ts->last_x = x_pos; + ts->last_y = y_pos; + + s3c24xx_ts_wait_for_int_mode(ts, updn_up); +} + +/** Convert sampled data to screen coordinates. */ +static void s3c24xx_ts_convert_samples(int smp0, int smp1, int *x, int *y) +{ + /* + * The orientation and display dimensions are GTA02-specific and the + * calibration values might even specific to the individual piece + * of hardware. + * + * The calibration values can be obtained by touching corners + * of the screen with the stylus and noting the sampled values. + */ + *x = lin_map_range(smp1, 0xa1, 0x396, 0, 479); + *y = lin_map_range(smp0, 0x69, 0x38a, 639, 0); +} + +/** Map integer from one range to another range in a linear fashion. + * + * i0 < i1 is required. i0 is mapped to o0, i1 to o1. If o1 < o0, then the + * mapping will be descending. If v is outside of [i0, i1], it is clamped. + * + * @param v Value to map. + * @param i0 Lower bound of input range. + * @param i1 Upper bound of input range. + * @param o0 First bound of output range. + * @param o1 Second bound of output range. + * + * @return Mapped value ov, o0 <= ov <= o1. + */ +static int lin_map_range(int v, int i0, int i1, int o0, int o1) +{ + if (v < i0) + v = i0; + + if (v > i1) + v = i1; + + return o0 + (o1 - o0) * (v - i0) / (i1 - i0); +} + +/** Handle mouse client connection. */ +static void s3c24xx_ts_connection(ipc_callid_t iid, ipc_call_t *icall) +{ + ipc_callid_t callid; + ipc_call_t call; + int retval; + + ipc_answer_0(iid, EOK); + + while (1) { + callid = async_get_call(&call); + switch (IPC_GET_METHOD(call)) { + case IPC_M_PHONE_HUNGUP: + if (ts->client_phone != -1) { + ipc_hangup(ts->client_phone); + ts->client_phone = -1; + } + + ipc_answer_0(callid, EOK); + return; + case IPC_M_CONNECT_TO_ME: + if (ts->client_phone != -1) { + retval = ELIMIT; + break; + } + ts->client_phone = IPC_GET_ARG5(call); + retval = 0; + break; + default: + retval = EINVAL; + } + ipc_answer_0(callid, retval); + } +} + +/** @} + */ Index: uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.h =================================================================== --- uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.h (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) +++ uspace/srv/hid/s3c24xx_ts/s3c24xx_ts.h (revision 527298a2333d7b6963d6547e3f3c42f0bea1e8af) @@ -0,0 +1,140 @@ +/* + * Copyright (c) 2010 Jiri Svoboda + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup genarch + * @{ + */ +/** + * @file + * @brief Samsung S3C24xx on-chip ADC and touch-screen interface driver. + */ + +#ifndef S3C24XX_TS_H_ +#define S3C24XX_TS_H_ + +#include + +/** S3C24xx ADC and touch-screen I/O */ +typedef struct { + uint32_t con; + uint32_t tsc; + uint32_t dly; + uint32_t dat0; + uint32_t dat1; + uint32_t updn; +} s3c24xx_adc_io_t; + +/* Fields in ADCCON register */ +#define ADCCON_ECFLG 0x8000 +#define ADCCON_PRSCEN 0x4000 + +#define ADCCON_PRSCVL(val) (((val) & 0xff) << 6) + +#define ADCCON_SEL_MUX(smux) (((smux) & 7) << 3) + +#define ADCCON_STDBM 0x0004 +#define ADCCON_READ_START 0x0002 +#define ADCCON_ENABLE_START 0x0001 + +/* Values for ADCCON_SEL_MUX */ +#define SMUX_AIN0 0 +#define SMUX_AIN1 1 +#define SMUX_AIN2 2 +#define SMUX_AIN3 3 +#define SMUX_YM 4 +#define SMUX_YP 5 +#define SMUX_XM 6 +#define SMUX_XP 7 + + +/* Fields in ADCTSC register */ +#define ADCTSC_DSUD_UP 0x0100 +#define ADCTSC_YM_ENABLE 0x0080 +#define ADCTSC_YP_DISABLE 0x0040 +#define ADCTSC_XM_ENABLE 0x0020 +#define ADCTSC_XP_DISABLE 0x0010 +#define ADCTSC_PULLUP_DISABLE 0x0008 +#define ADCTSC_AUTO_PST 0x0004 + +#define ADCTSC_XY_PST_NOOP 0x0000 +#define ADCTSC_XY_PST_X 0x0001 +#define ADCTSC_XY_PST_Y 0x0002 +#define ADCTSC_XY_PST_WAITINT 0x0003 +#define ADCTSC_XY_PST_MASK 0x0003 + +/* Fields in ADCDAT0, ADCDAT1 registers */ +#define ADCDAT_UPDOWN 0x8000 +#define ADCDAT_AUTO_PST 0x4000 + +/* Fields in ADCUPDN register */ +#define ADCUPDN_TSC_UP 0x0002 +#define ADCUPDN_TSC_DN 0x0001 + +/** Touchscreen interrupt number */ +#define S3C24XX_TS_INR 31 + +/** Touchscreen I/O address */ +#define S3C24XX_TS_ADDR 0x58000000 + +typedef enum { + ts_wait_pendown, + ts_sample_pos, + ts_wait_penup +} ts_state_t; + +typedef enum { + updn_up, + updn_down +} ts_updn_t; + +/** S3C24xx touchscreen driver instance */ +typedef struct { + /** Physical device address */ + uintptr_t paddr; + + /** Device I/O structure */ + s3c24xx_adc_io_t *io; + + /** Callback phone to the client */ + int client_phone; + + /** Device handle */ + dev_handle_t dev_handle; + + /** Device/driver state */ + ts_state_t state; + + /** Previous position reported to client. */ + int last_x; + int last_y; +} s3c24xx_ts_t; + +#endif + +/** @} + */