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Set pixel clock on mode set

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This commit is contained in:
jmcneill 2019-11-23 18:55:08 +00:00
parent 287b7fffbc
commit ab6de37f60
1 changed files with 19 additions and 8 deletions
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27
sys/arch/arm/sunxi/sunxi_dwhdmi.c
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@ -1,4 +1,4 @@
/* $NetBSD: sunxi_dwhdmi.c,v 1.6 2019/11/23 12:30:45 jmcneill Exp $ */
/* $NetBSD: sunxi_dwhdmi.c,v 1.7 2019/11/23 18:55:08 jmcneill Exp $ */
/*-
* Copyright (c) 2019 Jared D. McNeill <jmcneill@invisible.ca>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sunxi_dwhdmi.c,v 1.6 2019/11/23 12:30:45 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: sunxi_dwhdmi.c,v 1.7 2019/11/23 18:55:08 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -62,6 +62,7 @@ struct sunxi_dwhdmi_softc {
int sc_phandle;
struct fdtbus_phy *sc_phy;
struct fdtbus_regulator *sc_regulator;
struct clk *sc_clk;
struct fdt_device_ports sc_ports;
struct drm_display_mode sc_curmode;
@ -186,6 +187,15 @@ sunxi_dwhdmi_mode_set(struct dwhdmi_softc *dsc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct sunxi_dwhdmi_softc * const sc = to_sunxi_dwhdmi_softc(dsc);
int error;
if (sc->sc_clk != NULL) {
error = clk_set_rate(sc->sc_clk, adjusted_mode->clock * 1000);
if (error != 0)
device_printf(sc->sc_base.sc_dev,
"couldn't set pixel clock to %u Hz: %d\n",
adjusted_mode->clock * 1000, error);
}
sc->sc_curmode = *adjusted_mode;
}
@ -229,12 +239,6 @@ sunxi_dwhdmi_attach(device_t parent, device_t self, void *aux)
return;
}
rst = fdtbus_reset_get(phandle, "ctrl");
if (rst == NULL || fdtbus_reset_deassert(rst) != 0) {
aprint_error(": couldn't de-assert reset\n");
return;
}
clk_iahb = fdtbus_clock_get(phandle, "iahb");
if (clk_iahb == NULL || clk_enable(clk_iahb) != 0) {
aprint_error(": couldn't enable iahb clock\n");
@ -267,6 +271,7 @@ sunxi_dwhdmi_attach(device_t parent, device_t self, void *aux)
sc->sc_base.sc_scl_hcnt = 0xd8;
sc->sc_base.sc_scl_lcnt = 0xfe;
sc->sc_phandle = faa->faa_phandle;
sc->sc_clk = clk_tmds;
aprint_naive("\n");
aprint_normal(": HDMI TX\n");
@ -281,6 +286,12 @@ sunxi_dwhdmi_attach(device_t parent, device_t self, void *aux)
return;
}
rst = fdtbus_reset_get(phandle, "ctrl");
if (rst == NULL || fdtbus_reset_deassert(rst) != 0) {
aprint_error_dev(self, "couldn't de-assert reset\n");
return;
}
sunxi_hdmiphy_init(sc->sc_phy);
if (dwhdmi_attach(&sc->sc_base) != 0) {