static void sunxi_hdmi_mode_set(const struct ctfb_res_modes *mode,
int clk_div, int clk_double)
{
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
int x, y;
/* Write clear interrupt status bits */
writel(SUNXI_HDMI_IRQ_STATUS_BITS, &hdmi->irq);
if (sunxi_display.monitor == sunxi_monitor_hdmi)
sunxi_hdmi_setup_info_frames(mode);
/* Set input sync enable */
writel(SUNXI_HDMI_UNKNOWN_INPUT_SYNC, &hdmi->unknown);
/* Init various registers, select pll3 as clock source */
writel(SUNXI_HDMI_VIDEO_POL_TX_CLK, &hdmi->video_polarity);
writel(SUNXI_HDMI_PAD_CTRL0_RUN, &hdmi->pad_ctrl0);
writel(SUNXI_HDMI_PAD_CTRL1, &hdmi->pad_ctrl1);
writel(SUNXI_HDMI_PLL_CTRL, &hdmi->pll_ctrl);
writel(SUNXI_HDMI_PLL_DBG0_PLL3, &hdmi->pll_dbg0);
/* Setup clk div and doubler */
clrsetbits_le32(&hdmi->pll_ctrl, SUNXI_HDMI_PLL_CTRL_DIV_MASK,
SUNXI_HDMI_PLL_CTRL_DIV(clk_div));
if (!clk_double)
setbits_le32(&hdmi->pad_ctrl1, SUNXI_HDMI_PAD_CTRL1_HALVE);
/* Setup timing registers */
writel(SUNXI_HDMI_Y(mode->yres) | SUNXI_HDMI_X(mode->xres),
&hdmi->video_size);
x = mode->hsync_len + mode->left_margin;
y = mode->vsync_len + mode->upper_margin;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_bp);
x = mode->right_margin;
y = mode->lower_margin;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_fp);
x = mode->hsync_len;
y = mode->vsync_len;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_spw);
if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_HOR);
if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_VER);
}
static void sunxi_lcdc_tcon0_mode_set(const struct ctfb_res_modes *mode,
bool for_ext_vga_dac)
{
struct sunxi_lcdc_reg * const lcdc =
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
int clk_div, clk_double, pin;
struct display_timing timing;
#if defined CONFIG_MACH_SUN8I && defined CONFIG_VIDEO_LCD_IF_LVDS
for (pin = SUNXI_GPD(18); pin <= SUNXI_GPD(27); pin++) {
#else
for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++) {
#endif
#ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
#endif
#ifdef CONFIG_VIDEO_LCD_IF_LVDS
sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LVDS0);
#endif
#ifdef CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804
sunxi_gpio_set_drv(pin, 3);
#endif
}
lcdc_pll_set(ccm, 0, mode->pixclock_khz, &clk_div, &clk_double,
sunxi_is_composite());
sunxi_ctfb_mode_to_display_timing(mode, &timing);
lcdc_tcon0_mode_set(lcdc, &timing, clk_div, for_ext_vga_dac,
sunxi_display.depth, CONFIG_VIDEO_LCD_DCLK_PHASE);
}
#if defined CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA || defined CONFIG_VIDEO_COMPOSITE
static void sunxi_lcdc_tcon1_mode_set(const struct ctfb_res_modes *mode,
int *clk_div, int *clk_double,
bool use_portd_hvsync)
{
struct sunxi_lcdc_reg * const lcdc =
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
struct display_timing timing;
sunxi_ctfb_mode_to_display_timing(mode, &timing);
lcdc_tcon1_mode_set(lcdc, &timing, use_portd_hvsync,
sunxi_is_composite());
if (use_portd_hvsync) {
sunxi_gpio_set_cfgpin(SUNXI_GPD(26), SUNXI_GPD_LCD0);
sunxi_gpio_set_cfgpin(SUNXI_GPD(27), SUNXI_GPD_LCD0);
}
lcdc_pll_set(ccm, 1, mode->pixclock_khz, clk_div, clk_double,
sunxi_is_composite());
}
#endif /* CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA || CONFIG_VIDEO_COMPOSITE */
#ifdef CONFIG_VIDEO_HDMI
static void sunxi_hdmi_setup_info_frames(const struct ctfb_res_modes *mode)
{
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
u8 checksum = 0;
u8 avi_info_frame[17] = {
0x82, 0x02, 0x0d, 0x00, 0x12, 0x00, 0x88, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00
};
u8 vendor_info_frame[19] = {
0x81, 0x01, 0x06, 0x29, 0x03, 0x0c, 0x00, 0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00
};
int i;
if (mode->pixclock_khz <= 27000)
avi_info_frame[5] = 0x40; /* SD-modes, ITU601 colorspace */
else
avi_info_frame[5] = 0x80; /* HD-modes, ITU709 colorspace */
if (mode->xres * 100 / mode->yres < 156)
avi_info_frame[5] |= 0x18; /* 4 : 3 */
else
avi_info_frame[5] |= 0x28; /* 16 : 9 */
for (i = 0; i < ARRAY_SIZE(avi_info_frame); i++)
checksum += avi_info_frame[i];
avi_info_frame[3] = 0x100 - checksum;
for (i = 0; i < ARRAY_SIZE(avi_info_frame); i++)
writeb(avi_info_frame[i], &hdmi->avi_info_frame[i]);
writel(SUNXI_HDMI_QCP_PACKET0, &hdmi->qcp_packet0);
writel(SUNXI_HDMI_QCP_PACKET1, &hdmi->qcp_packet1);
for (i = 0; i < ARRAY_SIZE(vendor_info_frame); i++)
writeb(vendor_info_frame[i], &hdmi->vendor_info_frame[i]);
writel(SUNXI_HDMI_PKT_CTRL0, &hdmi->pkt_ctrl0);
writel(SUNXI_HDMI_PKT_CTRL1, &hdmi->pkt_ctrl1);
setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_HDMI);
}
static void sunxi_hdmi_mode_set(const struct ctfb_res_modes *mode,
int clk_div, int clk_double)
{
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
int x, y;
/* Write clear interrupt status bits */
writel(SUNXI_HDMI_IRQ_STATUS_BITS, &hdmi->irq);
if (sunxi_display.monitor == sunxi_monitor_hdmi)
sunxi_hdmi_setup_info_frames(mode);
/* Set input sync enable */
writel(SUNXI_HDMI_UNKNOWN_INPUT_SYNC, &hdmi->unknown);
/* Init various registers, select pll3 as clock source */
writel(SUNXI_HDMI_VIDEO_POL_TX_CLK, &hdmi->video_polarity);
writel(SUNXI_HDMI_PAD_CTRL0_RUN, &hdmi->pad_ctrl0);
writel(SUNXI_HDMI_PAD_CTRL1, &hdmi->pad_ctrl1);
writel(SUNXI_HDMI_PLL_CTRL, &hdmi->pll_ctrl);
writel(SUNXI_HDMI_PLL_DBG0_PLL3, &hdmi->pll_dbg0);
/* Setup clk div and doubler */
clrsetbits_le32(&hdmi->pll_ctrl, SUNXI_HDMI_PLL_CTRL_DIV_MASK,
SUNXI_HDMI_PLL_CTRL_DIV(clk_div));
if (!clk_double)
setbits_le32(&hdmi->pad_ctrl1, SUNXI_HDMI_PAD_CTRL1_HALVE);
/* Setup timing registers */
writel(SUNXI_HDMI_Y(mode->yres) | SUNXI_HDMI_X(mode->xres),
&hdmi->video_size);
x = mode->hsync_len + mode->left_margin;
y = mode->vsync_len + mode->upper_margin;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_bp);
x = mode->right_margin;
y = mode->lower_margin;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_fp);
x = mode->hsync_len;
y = mode->vsync_len;
writel(SUNXI_HDMI_Y(y) | SUNXI_HDMI_X(x), &hdmi->video_spw);
if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_HOR);
if (mode->sync & FB_SYNC_VERT_HIGH_ACT)
setbits_le32(&hdmi->video_polarity, SUNXI_HDMI_VIDEO_POL_VER);
}
static void sunxi_hdmi_enable(void)
{
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
udelay(100);
setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_ENABLE);
}
#endif /* CONFIG_VIDEO_HDMI */
#if defined CONFIG_VIDEO_VGA || defined CONFIG_VIDEO_COMPOSITE
static void sunxi_tvencoder_mode_set(void)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
struct sunxi_tve_reg * const tve =
(struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
/* Reset off */
setbits_le32(&ccm->lcd0_ch0_clk_cfg, CCM_LCD_CH0_CTRL_TVE_RST);
/* Clock on */
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_TVE0);
switch (sunxi_display.monitor) {
case sunxi_monitor_vga:
tvencoder_mode_set(tve, tve_mode_vga);
break;
case sunxi_monitor_composite_pal_nc:
tvencoder_mode_set(tve, tve_mode_composite_pal_nc);
break;
case sunxi_monitor_composite_pal:
tvencoder_mode_set(tve, tve_mode_composite_pal);
break;
case sunxi_monitor_composite_pal_m:
tvencoder_mode_set(tve, tve_mode_composite_pal_m);
break;
case sunxi_monitor_composite_ntsc:
tvencoder_mode_set(tve, tve_mode_composite_ntsc);
break;
case sunxi_monitor_none:
case sunxi_monitor_dvi:
case sunxi_monitor_hdmi:
case sunxi_monitor_lcd:
break;
}
}
#endif /* CONFIG_VIDEO_VGA || defined CONFIG_VIDEO_COMPOSITE */
static void sunxi_drc_init(void)
{
#ifdef CONFIG_SUNXI_GEN_SUN6I
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
/* On sun6i the drc must be clocked even when in pass-through mode */
#ifdef CONFIG_MACH_SUN8I_A33
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_SAT);
#endif
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DRC0);
clock_set_de_mod_clock(&ccm->iep_drc0_clk_cfg, 300000000);
#endif
}
#ifdef CONFIG_VIDEO_VGA_VIA_LCD
static void sunxi_vga_external_dac_enable(void)
{
int pin;
pin = sunxi_name_to_gpio(CONFIG_VIDEO_VGA_EXTERNAL_DAC_EN);
if (pin >= 0) {
gpio_request(pin, "vga_enable");
gpio_direction_output(pin, 1);
}
}
static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode)
{
struct edid1_info edid1;
struct edid_cea861_info cea681[4];
struct edid_detailed_timing *t =
(struct edid_detailed_timing *)edid1.monitor_details.timing;
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
int i, r, ext_blocks = 0;
/* SUNXI_HDMI_CTRL_ENABLE & PAD_CTRL0 are already set by hpd_detect */
writel(SUNXI_HDMI_PAD_CTRL1 | SUNXI_HDMI_PAD_CTRL1_HALVE,
&hdmi->pad_ctrl1);
writel(SUNXI_HDMI_PLL_CTRL | SUNXI_HDMI_PLL_CTRL_DIV(15),
&hdmi->pll_ctrl);
writel(SUNXI_HDMI_PLL_DBG0_PLL3, &hdmi->pll_dbg0);
/* Reset i2c controller */
setbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_DDC_GATE);
writel(SUNXI_HMDI_DDC_CTRL_ENABLE |
SUNXI_HMDI_DDC_CTRL_SDA_ENABLE |
SUNXI_HMDI_DDC_CTRL_SCL_ENABLE |
SUNXI_HMDI_DDC_CTRL_RESET, &hdmi->ddc_ctrl);
if (await_completion(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_RESET, 0))
return -EIO;
writel(SUNXI_HDMI_DDC_CLOCK, &hdmi->ddc_clock);
#ifndef CONFIG_MACH_SUN6I
writel(SUNXI_HMDI_DDC_LINE_CTRL_SDA_ENABLE |
SUNXI_HMDI_DDC_LINE_CTRL_SCL_ENABLE, &hdmi->ddc_line_ctrl);
#endif
r = sunxi_hdmi_edid_get_block(0, (u8 *)&edid1);
if (r == 0) {
r = edid_check_info(&edid1);
if (r) {
printf("EDID: invalid EDID data\n");
r = -EINVAL;
}
}
if (r == 0) {
ext_blocks = edid1.extension_flag;
if (ext_blocks > 4)
ext_blocks = 4;
for (i = 0; i < ext_blocks; i++) {
if (sunxi_hdmi_edid_get_block(1 + i,
(u8 *)&cea681[i]) != 0) {
ext_blocks = i;
break;
}
}
}
/* Disable DDC engine, no longer needed */
clrbits_le32(&hdmi->ddc_ctrl, SUNXI_HMDI_DDC_CTRL_ENABLE);
clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_DDC_GATE);
if (r)
return r;
/* We want version 1.3 or 1.2 with detailed timing info */
if (edid1.version != 1 || (edid1.revision < 3 &&
!EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(edid1))) {
printf("EDID: unsupported version %d.%d\n",
edid1.version, edid1.revision);
return -EINVAL;
}
/* Take the first usable detailed timing */
for (i = 0; i < 4; i++, t++) {
r = video_edid_dtd_to_ctfb_res_modes(t, mode);
if (r == 0)
break;
}
if (i == 4) {
printf("EDID: no usable detailed timing found\n");
return -ENOENT;
}
/* Check for basic audio support, if found enable hdmi output */
sunxi_display.monitor = sunxi_monitor_dvi;
for (i = 0; i < ext_blocks; i++) {
if (cea681[i].extension_tag != EDID_CEA861_EXTENSION_TAG ||
cea681[i].revision < 2)
continue;
if (EDID_CEA861_SUPPORTS_BASIC_AUDIO(cea681[i]))
sunxi_display.monitor = sunxi_monitor_hdmi;
}
return 0;
}
