1d4c34376a
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
212 lines
5.7 KiB
C
212 lines
5.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011 Jakub Wojciech Klama <jceel@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/time.h>
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#include <sys/timetc.h>
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#include <sys/watchdog.h>
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#include <dev/spibus/spi.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <arm/lpc/lpcreg.h>
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#include <arm/lpc/lpcvar.h>
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#include "spibus_if.h"
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struct ssd1289_softc
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{
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device_t ss_dev;
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};
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static int ssd1289_probe(device_t);
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static int ssd1289_attach(device_t);
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static __inline void ssd1289_set_dc(struct ssd1289_softc *, int);
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static __inline void ssd1289_spi_send(struct ssd1289_softc *, uint8_t *, int);
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static void ssd1289_write_reg(struct ssd1289_softc *, uint16_t, uint16_t);
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static struct ssd1289_softc *ssd1289_sc = NULL;
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void ssd1289_configure(void);
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static int
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ssd1289_probe(device_t dev)
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{
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#if 0
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if (!ofw_bus_is_compatible(dev, "ssd1289"))
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return (ENXIO);
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#endif
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device_set_desc(dev, "Solomon Systech SSD1289 LCD controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ssd1289_attach(device_t dev)
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{
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struct ssd1289_softc *sc = device_get_softc(dev);
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sc->ss_dev = dev;
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ssd1289_sc = sc;
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return (0);
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}
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void
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ssd1289_configure(void)
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{
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struct ssd1289_softc *sc = ssd1289_sc;
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/* XXX will be replaced with commented code */
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ssd1289_write_reg(sc,0x00,0x0001);
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DELAY(20);
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ssd1289_write_reg(sc,0x03,0xA2A4);
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ssd1289_write_reg(sc,0x0C,0x0004);
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ssd1289_write_reg(sc,0x0D,0x0308);
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ssd1289_write_reg(sc,0x0E,0x3000);
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DELAY(50);
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ssd1289_write_reg(sc,0x1E,0x00AF);
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ssd1289_write_reg(sc,0x01,0x2B3F);
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ssd1289_write_reg(sc,0x02,0x0600);
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ssd1289_write_reg(sc,0x10,0x0000);
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ssd1289_write_reg(sc,0x07,0x0233);
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ssd1289_write_reg(sc,0x0B,0x0039);
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ssd1289_write_reg(sc,0x0F,0x0000);
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DELAY(50);
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ssd1289_write_reg(sc,0x30,0x0707);
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ssd1289_write_reg(sc,0x31,0x0204);
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ssd1289_write_reg(sc,0x32,0x0204);
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ssd1289_write_reg(sc,0x33,0x0502);
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ssd1289_write_reg(sc,0x34,0x0507);
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ssd1289_write_reg(sc,0x35,0x0204);
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ssd1289_write_reg(sc,0x36,0x0204);
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ssd1289_write_reg(sc,0x37,0x0502);
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ssd1289_write_reg(sc,0x3A,0x0302);
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ssd1289_write_reg(sc,0x3B,0x0302);
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ssd1289_write_reg(sc,0x23,0x0000);
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ssd1289_write_reg(sc,0x24,0x0000);
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ssd1289_write_reg(sc,0x48,0x0000);
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ssd1289_write_reg(sc,0x49,0x013F);
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ssd1289_write_reg(sc,0x4A,0x0000);
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ssd1289_write_reg(sc,0x4B,0x0000);
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ssd1289_write_reg(sc,0x41,0x0000);
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ssd1289_write_reg(sc,0x42,0x0000);
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ssd1289_write_reg(sc,0x44,0xEF00);
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ssd1289_write_reg(sc,0x45,0x0000);
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ssd1289_write_reg(sc,0x46,0x013F);
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DELAY(50);
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ssd1289_write_reg(sc,0x44,0xEF00);
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ssd1289_write_reg(sc,0x45,0x0000);
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ssd1289_write_reg(sc,0x4E,0x0000);
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ssd1289_write_reg(sc,0x4F,0x0000);
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ssd1289_write_reg(sc,0x46,0x013F);
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}
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static __inline void
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ssd1289_spi_send(struct ssd1289_softc *sc, uint8_t *data, int len)
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{
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struct spi_command cmd;
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uint8_t buffer[8];
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cmd.tx_cmd = data;
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cmd.tx_cmd_sz = len;
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cmd.rx_cmd = buffer;
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cmd.rx_cmd_sz = len;
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cmd.tx_data_sz = 0;
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cmd.rx_data_sz = 0;
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SPIBUS_TRANSFER(device_get_parent(sc->ss_dev), sc->ss_dev, &cmd);
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}
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static __inline void
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ssd1289_set_dc(struct ssd1289_softc *sc, int value)
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{
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lpc_gpio_set_state(sc->ss_dev, SSD1289_DC_PIN, value);
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}
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static void
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ssd1289_write_reg(struct ssd1289_softc *sc, uint16_t addr, uint16_t value)
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{
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uint8_t buffer[2];
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ssd1289_set_dc(sc, 0);
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buffer[0] = 0x00;
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buffer[1] = addr & 0xff;
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ssd1289_spi_send(sc, buffer, 2);
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ssd1289_set_dc(sc, 1);
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buffer[0] = (value >> 8) & 0xff;
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buffer[1] = value & 0xff;
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ssd1289_spi_send(sc, buffer, 2);
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}
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static device_method_t ssd1289_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ssd1289_probe),
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DEVMETHOD(device_attach, ssd1289_attach),
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{ 0, 0 }
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};
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static devclass_t ssd1289_devclass;
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static driver_t ssd1289_driver = {
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"ssd1289",
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ssd1289_methods,
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sizeof(struct ssd1289_softc),
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};
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DRIVER_MODULE(ssd1289, spibus, ssd1289_driver, ssd1289_devclass, 0, 0);
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