/*      $NetBSD: netwalker_lcd.c,v 1.7 2020/01/15 10:25:47 skrll Exp $  */

/*-
* Copyright (c) 2011, 2012 Genetec corp. All rights reserved.
* Written by Hashimoto Kenichi for Genetec corp.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: netwalker_lcd.c,v 1.7 2020/01/15 10:25:47 skrll Exp $");

#include "opt_imx51_ipuv3.h"
#include "opt_netwalker_lcd.h"

#include "wsdisplay.h"
#include "ioconf.h"
#include "netwalker_backlight.h"

#define _INTR_PRIVATE

#include <sys/param.h>
#include <sys/device.h>
#include <sys/gpio.h>

#include <sys/bus.h>
#include <arm/imx/imx51var.h>
#include <arm/imx/imx51reg.h>
#include <arm/imx/imx51_ipuv3var.h>
#include <arm/imx/imx51_ipuv3reg.h>
#include <arm/imx/imxgpiovar.h>

#include <evbarm/netwalker/netwalker_backlightvar.h>

int lcd_match(device_t, cfdata_t, void *);
void lcd_attach(device_t, device_t, void *);

#if NWSDISPLAY == 0

#ifdef LCD_DEBUG
static void draw_test_pattern(struct imx51_ipuv3_softc *,
   struct imx51_ipuv3_screen *);
#endif

/*
* Interface to LCD framebuffer without wscons
*/
extern struct cfdriver ipu_cd;

dev_type_open(lcdopen);
dev_type_close(lcdclose);
dev_type_ioctl(lcdioctl);
dev_type_mmap(lcdmmap);
const struct cdevsw ipu_cdevsw = {
       .d_open = lcdopen,
       .d_close = lcdclose,
       .d_read = noread,
       .d_write = nowrite,
       .d_ioctl = lcdioctl,
       .d_stop = nostop,
       .d_tty = notty,
       .d_poll = nopoll,
       .d_mmap = lcdmmap,
       .d_kqfilter = nokqfilter,
       .d_discard = nodiscard,
       .d_flag = D_TTY
};

#endif

CFATTACH_DECL_NEW(lcd_netwalker, sizeof (struct imx51_ipuv3_softc),
   lcd_match, lcd_attach, NULL, NULL);

int
lcd_match( device_t parent, cfdata_t cf, void *aux )
{
       return 1;
}

/* Sharp's LCD */
static const struct lcd_panel_geometry sharp_panel = {
       .depth = 16,

       .panel_width = 1024,    /* Width */
       .panel_height = 600,    /* Height */

       .pixel_clk = 30076000,

       .hsync_width = 8,
       .left  = 20,
       .right = 20,

       .vsync_width = 4,
       .upper = 2,
       .lower = 2,

       .panel_info = 0,
};

void lcd_attach( device_t parent, device_t self, void *aux )
{
       struct imx51_ipuv3_softc *sc = device_private(self);
       struct axi_attach_args *axia = aux;
       bus_space_tag_t iot = axia->aa_iot;

       sc->dev = self;

       /* XXX move this to imx51_ipuv3.c */
       {
               bus_space_handle_t mipi_ioh;
               uint32_t reg;

               if (bus_space_map(iot, 0x83fdc000, 0x1000, 0, &mipi_ioh))
                       aprint_error_dev(self, "can't map MIPI HSC");
               else {
                       bus_space_write_4(iot, mipi_ioh, 0x000, 0xf00);

                       reg = bus_space_read_4(iot, mipi_ioh, 0x800);
                       bus_space_write_4(iot, mipi_ioh, 0x800, reg | 0x0ff);

                       reg = bus_space_read_4(iot, mipi_ioh, 0x800);
                       bus_space_write_4(iot, mipi_ioh, 0x800, reg | 0x10000);
               }
       }

       /* LCD power on */
       imxgpio_set_direction(GPIO_NO(4, 9), GPIO_PIN_OUTPUT);
       imxgpio_set_direction(GPIO_NO(4, 10), GPIO_PIN_OUTPUT);
       imxgpio_set_direction(GPIO_NO(3, 3), GPIO_PIN_OUTPUT);

       imxgpio_data_write(GPIO_NO(3, 3), GPIO_PIN_HIGH);
       imxgpio_data_write(GPIO_NO(4, 9), GPIO_PIN_HIGH);
       delay(180 * 1000);
       imxgpio_data_write(GPIO_NO(4, 10), GPIO_PIN_HIGH);

       imxgpio_set_direction(GPIO_NO(2, 13), GPIO_PIN_OUTPUT);
       imxgpio_data_write(GPIO_NO(2, 13), GPIO_PIN_HIGH);

       imx51_ipuv3_attach_sub(sc, aux, &sharp_panel);

#if NWSDISPLAY == 0
       struct imx51_ipuv3_screen *screen;
       int error;

       error = imx51_ipuv3_new_screen(sc, &screen);
#ifdef LCD_DEBUG
       draw_test_pattern(sc, screen);
#endif
       if (error == 0) {
               sc->active = screen;
               imx51_ipuv3_start_dma(sc, screen);
       }
#endif
}

#if NWSDISPLAY == 0

int
lcdopen(dev_t dev, int oflags, int devtype, struct lwp *l)
{
       return 0;
}

int
lcdclose(dev_t dev, int fflag, int devtype, struct lwp *l)
{
       return 0;
}

paddr_t
lcdmmap(dev_t dev, off_t offset, int size)
{
       struct imx51_ipuv3_softc *sc =
           device_lookup_private(&ipu_cd, minor(dev));
       struct imx51_ipuv3_screen *scr = sc->active;

       return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs,
           offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
}

int
lcdioctl(dev_t dev, u_long cmd, void *data,
   int fflag, struct lwp *l)
{
       return EOPNOTSUPP;
}

#ifdef LCD_DEBUG
static void
draw_test_pattern(struct imx51_ipuv3_softc *sc,
   struct imx51_ipuv3_screen *scr)
{
       int x, y;
       uint16_t color, *line;
       char *buf = (char *)(scr->buf_va);

       printf("%s: buf_va %p, size 0x%x\n", __func__, buf,
              (uint)scr->buf_size);
       printf("%s: panel %d x %d\n", __func__,
           sc->geometry->panel_width,
           sc->geometry->panel_height);
#define rgb(r,g,b)      (((r)<<11) | ((g)<<5) | (b))

       for (y=0; y < sc->geometry->panel_height; ++y) {
               line = (uint16_t *)(buf + scr->stride * y);

               for (x=0; x < sc->geometry->panel_width; ++x) {
                       switch (((x/30) + (y/10)) % 8) {
                       default:
                       case 0: color = rgb(0x00, 0x00, 0x00); break;
                       case 1: color = rgb(0x00, 0x00, 0x1f); break;
                       case 2: color = rgb(0x00, 0x3f, 0x00); break;
                       case 3: color = rgb(0x00, 0x3f, 0x1f); break;
                       case 4: color = rgb(0x1f, 0x00, 0x00); break;
                       case 5: color = rgb(0x1f, 0x00, 0x1f); break;
                       case 6: color = rgb(0x1f, 0x3f, 0x00); break;
                       case 7: color = rgb(0x1f, 0x3f, 0x1f); break;
                       }

                       line[x] = color;
               }
       }

       for (x=0; x < MIN(sc->geometry->panel_height,
               sc->geometry->panel_width); ++x) {
               line = (uint16_t *)(buf + scr->stride * x);
               line[x] = rgb(0x1f, 0x3f, 0x1f);
       }
}
#endif

#endif /* NWSDISPLAY == 0 */

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