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sunxi: video: Add sun6i support

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Besided needing the usual sun6i specific ahb1_reset bits poking, it turns out
that sun6i also needs the drc to be taken out of reset and clocked even though
it is in pass-through mode.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Hans de Goede 2014-11-14 17:42:14 +01:00
parent 7f2c521f90
commit 211717a463
1 changed files with 30 additions and 0 deletions
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30
drivers/video/sunxi_display.c
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@ -38,6 +38,9 @@ static int sunxi_hdmi_hpd_detect(void)
CCM_HDMI_CTRL_PLL3);
/* Set ahb gating to pass */
#ifdef CONFIG_MACH_SUN6I
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
#endif
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
/* Clock on */
@ -55,6 +58,9 @@ static int sunxi_hdmi_hpd_detect(void)
clrbits_le32(&hdmi->ctrl, SUNXI_HDMI_CTRL_ENABLE);
clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_GATE);
clrbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI);
#ifdef CONFIG_MACH_SUN6I
clrbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI);
#endif
clock_set_pll3(0);
return 0;
@ -72,6 +78,11 @@ static void sunxi_composer_init(void)
(struct sunxi_de_be_reg *)SUNXI_DE_BE0_BASE;
int i;
#ifdef CONFIG_MACH_SUN6I
/* Reset off */
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE_BE0);
#endif
/* Clocks on */
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE_BE0);
setbits_le32(&ccm->dram_clk_gate, 1 << CCM_DRAM_GATE_OFFSET_DE_BE0);
@ -171,7 +182,11 @@ static void sunxi_lcdc_init(void)
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
/* Reset off */
#ifdef CONFIG_MACH_SUN6I
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_LCD0);
#else
setbits_le32(&ccm->lcd0_ch0_clk_cfg, CCM_LCD_CH0_CTRL_RST);
#endif
/* Clock on */
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_LCD0);
@ -226,6 +241,18 @@ static void sunxi_lcdc_mode_set(struct fb_videomode *mode,
sunxi_lcdc_pll_set(mode->pixclock, clk_div, clk_double);
}
#ifdef CONFIG_MACH_SUN6I
static void sunxi_drc_init(void)
{
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 */
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DRC0);
clock_set_de_mod_clock(&ccm->iep_drc0_clk_cfg, 300000000);
}
#endif
static void sunxi_hdmi_mode_set(struct fb_videomode *mode,
int clk_div, int clk_double)
{
@ -276,6 +303,9 @@ static void sunxi_engines_init(void)
{
sunxi_composer_init();
sunxi_lcdc_init();
#ifdef CONFIG_MACH_SUN6I
sunxi_drc_init();
#endif
}
static void sunxi_mode_set(struct fb_videomode *mode, unsigned int address)