static void
awin_tcon0_enable(struct awin_tcon_softc *sc, bool enable) {
uint32_t val;
/* turn on/off backlight */
if (sc->sc_lcdblk_pin_name != NULL) {
awin_gpio_pindata_write(&sc->sc_lcdblk_pin, enable ? 1 : 0);
}
/* turn on/off LCD */
if (sc->sc_lcdpwr_pin_name != NULL) {
awin_gpio_pindata_write(&sc->sc_lcdpwr_pin, enable ? 1 : 0);
}
/* and finally disable of enable the tcon */
KASSERT(sc->sc_output_type != OUTPUT_HDMI);
awin_debe_enable(device_unit(sc->sc_dev), enable);
delay(20000);
if (enable) {
val = TCON_READ(sc, AWIN_TCON_GCTL_REG);
val |= AWIN_TCON_GCTL_EN;
TCON_WRITE(sc, AWIN_TCON_GCTL_REG, val);
val = TCON_READ(sc, AWIN_TCON0_CTL_REG);
val |= AWIN_TCONx_CTL_EN;
TCON_WRITE(sc, AWIN_TCON0_CTL_REG, val);
val = TCON_READ(sc, AWIN_TCON0_LVDS_IF_REG);
val |= AWIN_TCON0_LVDS_IF_EN;
TCON_WRITE(sc, AWIN_TCON0_LVDS_IF_REG, val);
TCON_WRITE(sc, AWIN_TCON0_IO_TRI_REG, 0);
} else {
TCON_WRITE(sc, AWIN_TCON0_IO_TRI_REG, 0xffffffff);
val = TCON_READ(sc, AWIN_TCON0_LVDS_IF_REG);
val &= ~AWIN_TCON0_LVDS_IF_EN;
TCON_WRITE(sc, AWIN_TCON0_LVDS_IF_REG, val);
val = TCON_READ(sc, AWIN_TCON0_CTL_REG);
val &= ~AWIN_TCONx_CTL_EN;
TCON_WRITE(sc, AWIN_TCON0_CTL_REG, val);
val = TCON_READ(sc, AWIN_TCON_GCTL_REG);
val &= ~AWIN_TCON_GCTL_EN;
TCON_WRITE(sc, AWIN_TCON_GCTL_REG, val);
}
}
static void
awin_hdmi_read_edid(struct awin_hdmi_softc *sc)
{
const struct videomode *mode;
char edid[128];
struct edid_info ei;
int retry = 4;
u_int display_mode;
memset(edid, 0, sizeof(edid));
memset(&ei, 0, sizeof(ei));
while (--retry > 0) {
if (!awin_hdmi_read_edid_block(sc, edid, 0))
break;
}
if (retry == 0) {
device_printf(sc->sc_dev, "failed to read EDID\n");
} else {
if (edid_parse(edid, &ei) != 0) {
device_printf(sc->sc_dev, "failed to parse EDID\n");
}
#ifdef AWIN_HDMI_DEBUG
else {
edid_print(&ei);
}
#endif
}
if (sc->sc_display_mode == DISPLAY_MODE_AUTO)
display_mode = awin_hdmi_get_display_mode(sc, &ei);
else
display_mode = sc->sc_display_mode;
const char *forced = sc->sc_display_mode == DISPLAY_MODE_AUTO ?
"auto-detected" : "forced";
device_printf(sc->sc_dev, "%s mode (%s)\n",
display_mode == DISPLAY_MODE_HDMI ? "HDMI" : "DVI", forced);
strlcpy(sc->sc_display_vendor, ei.edid_vendorname,
sizeof(sc->sc_display_vendor));
strlcpy(sc->sc_display_product, ei.edid_productname,
sizeof(sc->sc_display_product));
sc->sc_current_display_mode = display_mode;
mode = ei.edid_preferred_mode;
if (mode == NULL)
mode = pick_mode_by_ref(640, 480, 60);
if (mode != NULL) {
awin_hdmi_video_enable(sc, false);
awin_tcon_enable(false);
delay(20000);
awin_debe_set_videomode(mode);
awin_tcon_set_videomode(mode);
awin_hdmi_set_videomode(sc, mode, display_mode);
awin_hdmi_set_audiomode(sc, mode, display_mode);
awin_debe_enable(true);
delay(20000);
awin_tcon_enable(true);
delay(20000);
awin_hdmi_video_enable(sc, true);
}
}
void
awin_tcon1_enable(int unit, bool enable)
{
struct awin_tcon_softc *sc;
device_t dev;
uint32_t val;
dev = device_find_by_driver_unit("awintcon", unit);
if (dev == NULL) {
printf("TCON%d: no driver found\n", unit);
return;
}
sc = device_private(dev);
KASSERT((sc->sc_output_type == OUTPUT_HDMI) ||
(sc->sc_output_type == OUTPUT_VGA));
awin_debe_enable(device_unit(sc->sc_dev), enable);
delay(20000);
if (enable) {
val = TCON_READ(sc, AWIN_TCON_GCTL_REG);
val |= AWIN_TCON_GCTL_EN;
TCON_WRITE(sc, AWIN_TCON_GCTL_REG, val);
val = TCON_READ(sc, AWIN_TCON1_CTL_REG);
val |= AWIN_TCONx_CTL_EN;
TCON_WRITE(sc, AWIN_TCON1_CTL_REG, val);
if (sc->sc_output_type == OUTPUT_VGA) {
TCON_WRITE(sc, AWIN_TCON1_IO_TRI_REG, 0x0cffffff);
} else
TCON_WRITE(sc, AWIN_TCON1_IO_TRI_REG, 0);
} else {
TCON_WRITE(sc, AWIN_TCON1_IO_TRI_REG, 0xffffffff);
val = TCON_READ(sc, AWIN_TCON1_CTL_REG);
val &= ~AWIN_TCONx_CTL_EN;
TCON_WRITE(sc, AWIN_TCON1_CTL_REG, val);
val = TCON_READ(sc, AWIN_TCON_GCTL_REG);
val &= ~AWIN_TCON_GCTL_EN;
TCON_WRITE(sc, AWIN_TCON_GCTL_REG, val);
}
KASSERT(tcon_mux_inited);
val = bus_space_read_4(sc->sc_bst, tcon_mux_bsh, 0);
#ifdef AWIN_TCON_DEBUG
printf("awin_tcon1_enable(%d) %d val 0x%x", unit, enable, val);
#endif
val &= ~ AWIN_TCON_MUX_CTL_HDMI_OUTPUT_SRC;
if (unit == 0) {
val |= __SHIFTIN(AWIN_TCON_MUX_CTL_HDMI_OUTPUT_SRC_LCDC0_TCON1,
AWIN_TCON_MUX_CTL_HDMI_OUTPUT_SRC);
} else if (unit == 1) {
val |= __SHIFTIN(AWIN_TCON_MUX_CTL_HDMI_OUTPUT_SRC_LCDC1_TCON1,
AWIN_TCON_MUX_CTL_HDMI_OUTPUT_SRC);
}
#ifdef AWIN_TCON_DEBUG
printf(" -> 0x%x", val);
#endif
bus_space_write_4(sc->sc_bst, tcon_mux_bsh, 0, val);
#ifdef AWIN_TCON_DEBUG
printf(": 0x%" PRIxBSH " 0x%" PRIxBSH " 0x%x 0x%x\n", sc->sc_bsh,
tcon_mux_bsh, bus_space_read_4(sc->sc_bst, tcon_mux_bsh, 0),
TCON_READ(sc, AWIN_TCON_MUX_CTL_REG));
#endif
}
static void
awin_tcon0_set_video(struct awin_tcon_softc *sc)
{
int32_t lcd_x, lcd_y, lcd_dclk_freq;
int32_t lcd_hbp, lcd_ht, lcd_vbp, lcd_vt;
int32_t lcd_hspw, lcd_vspw, lcd_io_cfg0;
uint32_t vblk, start_delay;
prop_dictionary_t cfg = device_properties(sc->sc_dev);
uint32_t val;
bool propb;
bool dualchan = false;
static struct videomode mode;
if (!prop_dictionary_get_int32(cfg, "lcd_x", &lcd_x)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_x\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_y", &lcd_y)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_y\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_dclk_freq", &lcd_dclk_freq)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_dclk_freq\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_hbp", &lcd_hbp)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_hbp\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_ht", &lcd_ht)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_ht\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_vbp", &lcd_vbp)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_vbp\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_vt", &lcd_vt)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_vt\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_hspw", &lcd_hspw)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_hspw\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_vspw", &lcd_vspw)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_vspw\n");
return;
}
if (!prop_dictionary_get_int32(cfg, "lcd_io_cfg0", &lcd_io_cfg0)) {
aprint_error_dev(sc->sc_dev, ": can't read lcd_io_cfg0\n");
return;
}
if (prop_dictionary_get_bool(cfg, "lvds_dual", &propb) && propb)
dualchan = true;
if (!awin_gpio_pinset_available(&awin_lvds0_pinset)) {
aprint_error_dev(sc->sc_dev, "lvds0 pins not available\n");
return;
}
if (dualchan && !awin_gpio_pinset_available(&awin_lvds1_pinset)) {
aprint_error_dev(sc->sc_dev, "lvds1 pins not available\n");
return;
}
awin_gpio_pinset_acquire(&awin_lvds0_pinset);
if (dualchan) {
awin_gpio_pinset_acquire(&awin_lvds1_pinset);
}
prop_dictionary_get_cstring_nocopy(cfg, "lcd_power_en",
&sc->sc_lcdpwr_pin_name);
if (sc->sc_lcdpwr_pin_name != NULL) {
if (!awin_gpio_pin_reserve(
sc->sc_lcdpwr_pin_name, &sc->sc_lcdpwr_pin)) {
aprint_error_dev(sc->sc_dev,
"failed to reserve GPIO \"%s\" for LCD power\n",
sc->sc_lcdpwr_pin_name);
sc->sc_lcdpwr_pin_name = NULL;
} else {
aprint_verbose_dev(sc->sc_dev,
": using GPIO \"%s\" for LCD power\n",
sc->sc_lcdpwr_pin_name);
}
}
prop_dictionary_get_cstring_nocopy(cfg, "lcd_bl_en",
&sc->sc_lcdblk_pin_name);
if (sc->sc_lcdblk_pin_name != NULL) {
if (!awin_gpio_pin_reserve(
sc->sc_lcdblk_pin_name, &sc->sc_lcdblk_pin)) {
aprint_error_dev(sc->sc_dev,
"failed to reserve GPIO \"%s\" for backlight\n",
sc->sc_lcdblk_pin_name);
sc->sc_lcdblk_pin_name = NULL;
} else {
if (sc->sc_lcdpwr_pin_name == NULL) {
aprint_verbose_dev(sc->sc_dev,
": using GPIO \"%s\" for backlight\n",
sc->sc_lcdblk_pin_name);
} else {
aprint_verbose(
", GPIO \"%s\" for backlight\n",
sc->sc_lcdblk_pin_name);
}
}
}
if (sc->sc_lcdpwr_pin_name != NULL) {
awin_gpio_pindata_write(&sc->sc_lcdpwr_pin, 1);
}
vblk = (lcd_vt / 2) - lcd_y;
start_delay = (vblk >= 32) ? 30 : (vblk - 2);
if (lcd_dclk_freq > 150) /* hardware limit ? */
lcd_dclk_freq = 150;
awin_tcon_set_pll(sc, lcd_dclk_freq * 1000, 7);
val = AWIN_TCONx_CTL_EN;
val |= __SHIFTIN(start_delay, AWIN_TCONx_CTL_START_DELAY);
/*
* the DE selector selects the primary DEBE for this tcon:
* 0 selects debe0 for tcon0 and debe1 for tcon1
*/
val |= __SHIFTIN(AWIN_TCONx_CTL_SRC_SEL_DE0,
AWIN_TCONx_CTL_SRC_SEL);
TCON_WRITE(sc, AWIN_TCON0_CTL_REG, val);
val = (lcd_x - 1) << 16 | (lcd_y - 1);
TCON_WRITE(sc, AWIN_TCON0_BASIC0_REG, val);
val = (lcd_ht - 1) << 16 | (lcd_hbp - 1);
TCON_WRITE(sc, AWIN_TCON0_BASIC1_REG, val);
val = (lcd_vt) << 16 | (lcd_vbp - 1);
TCON_WRITE(sc, AWIN_TCON0_BASIC2_REG, val);
val = ((lcd_hspw > 0) ? (lcd_hspw - 1) : 0) << 16;
val |= ((lcd_vspw > 0) ? (lcd_vspw - 1) : 0);
TCON_WRITE(sc, AWIN_TCON0_BASIC3_REG, val);
val = 0;
if (dualchan)
val |= AWIN_TCON0_LVDS_IF_DUALCHAN;
if (prop_dictionary_get_bool(cfg, "lvds_mode_jeida", &propb) && propb)
val |= AWIN_TCON0_LVDS_IF_MODE_JEIDA;
if (prop_dictionary_get_bool(cfg, "lvds_18bits", &propb) && propb)
val |= AWIN_TCON0_LVDS_IF_18BITS;
TCON_WRITE(sc, AWIN_TCON0_LVDS_IF_REG, val);
TCON_WRITE(sc, AWIN_TCON0_IO_POL_REG, lcd_io_cfg0);
TCON_WRITE(sc, AWIN_TCON0_IO_TRI_REG, 0);
TCON_WRITE(sc, AWIN_TCON_GINT1_REG,
__SHIFTIN(start_delay + 2, AWIN_TCON_GINT1_TCON0_LINENO));
val = 0xf0000000;
val &= ~AWIN_TCON0_DCLK_DIV;
val |= __SHIFTIN(sc->sc_clk_div, AWIN_TCON0_DCLK_DIV);
TCON_WRITE(sc, AWIN_TCON0_DCLK_REG, val);
mode.dot_clock = lcd_dclk_freq;
mode.hdisplay = lcd_x;
mode.hsync_start = lcd_ht - lcd_hbp;
mode.hsync_end = lcd_hspw + mode.hsync_start;
mode.htotal = lcd_ht;
mode.vdisplay = lcd_y;
mode.vsync_start = lcd_vt - lcd_vbp;
mode.vsync_end = lcd_vspw + mode.vsync_start;
mode.vtotal = lcd_vt;
mode.flags = 0;
mode.name = NULL;
awin_debe_set_videomode(sc->sc_debe_unit, &mode);
/* and finally, enable it */
awin_debe_enable(sc->sc_debe_unit, true);
delay(20000);
val = TCON_READ(sc, AWIN_TCON_GCTL_REG);
val |= AWIN_TCON_GCTL_EN;
TCON_WRITE(sc, AWIN_TCON_GCTL_REG, val);
delay(20000);
val = TCON_READ(sc, AWIN_TCON0_LVDS_IF_REG);
val |= AWIN_TCON0_LVDS_IF_EN;
TCON_WRITE(sc, AWIN_TCON0_LVDS_IF_REG, val);
/* XXX
* magic values here from linux. these are not documented
* in the A20 user manual, and other Allwiner LVDS-capable SoC
* documentation don't make sense with these values
*/
val = TCON_READ(sc, AWIN_TCON_LVDS_ANA0);
val |= 0x3F310000;
TCON_WRITE(sc, AWIN_TCON_LVDS_ANA0, val);
val = TCON_READ(sc, AWIN_TCON_LVDS_ANA0);
val |= 1 << 22;
TCON_WRITE(sc, AWIN_TCON_LVDS_ANA0, val);
delay(2);
val = TCON_READ(sc, AWIN_TCON_LVDS_ANA1);
val |= (0x1f << 26 | 0x1f << 10);
TCON_WRITE(sc, AWIN_TCON_LVDS_ANA1, val);
delay(2);
val = TCON_READ(sc, AWIN_TCON_LVDS_ANA1);
val |= (0x1f << 16 | 0x1f << 0);
TCON_WRITE(sc, AWIN_TCON_LVDS_ANA1, val);
val = TCON_READ(sc, AWIN_TCON_LVDS_ANA0);
val |= 1 << 22;
TCON_WRITE(sc, AWIN_TCON_LVDS_ANA0, val);
if (sc->sc_lcdblk_pin_name != NULL) {
awin_gpio_pindata_write(&sc->sc_lcdblk_pin, 1);
}
}