From: Mythri P K <mythripk@xxxxxx>
Add support to dump the HDMI PLL dividers such as regm, regn etc
and other clock dumps such as pixel clock rate, TMDS clock rate.
changes since V2:
Add pixel clock and TMDS clock dump and remove dcofreq and DISPC clock source
print.
Signed-off-by: Mythri P K <mythripk@xxxxxx>
---
drivers/video/omap2/dss/dss.c | 3 +++
drivers/video/omap2/dss/dss.h | 1 +
drivers/video/omap2/dss/hdmi.c | 33 +++++++++++++++++++++++++++++++++
3 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 3e09726..76e2bcd 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -732,6 +732,9 @@ void dss_debug_dump_clocks(struct seq_file *s)
#ifdef CONFIG_OMAP2_DSS_DSI
dsi_dump_clocks(s);
#endif
+#ifdef CONFIG_OMAP4_DSS_HDMI
+ hdmi_dump_clocks(s);
+#endif
}
#endif
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 8652007..ef8770a 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -473,6 +473,7 @@ void hdmi_uninit_platform_driver(void);
int hdmi_init_display(struct omap_dss_device *dssdev);
unsigned long hdmi_get_pixel_clock(void);
void hdmi_dump_regs(struct seq_file *s);
+void hdmi_dump_clocks(struct seq_file *s);
#else
static inline int hdmi_init_display(struct omap_dss_device *dssdev)
{
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 3262f0f..0510655 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -33,6 +33,8 @@
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <video/omapdss.h>
+#include <linux/seq_file.h>
+
#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \
defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE)
#include <sound/soc.h>
@@ -454,6 +456,37 @@ void hdmi_dump_regs(struct seq_file *s)
mutex_unlock(&hdmi.lock);
}
+void hdmi_dump_clocks(struct seq_file *s)
+{
+ enum omap_dss_clk_source dispc_clk_src;
+
+ dispc_clk_src = dss_get_dispc_clk_source();
+
+ if (hdmi_runtime_get())
+ return;
+
+ seq_printf(s, "- HDMI PLL -\n");
+
+ seq_printf(s, "hdmi %s source rate = %lu\n",
+ hdmi.ip_data.pll_data.refsel == HDMI_REFSEL_SYSCLK ?
+ "sysclk" : "pclk/ref1/ref2",
+ clk_get_rate(hdmi.sys_clk));
+
+ seq_printf(s, "Pixel clock frequency = %u\n",
+ hdmi.ip_data.cfg.timings.timings.pixel_clock);
+
+ seq_printf(s, "TMDS clock frequency = %u\n",
+ 10 * hdmi.ip_data.cfg.timings.timings.pixel_clock);
+
+ seq_printf(s, "regm\t%u\n", hdmi.ip_data.pll_data.regm);
+
+ seq_printf(s, "regmf\t%u\n", hdmi.ip_data.pll_data.regmf);
+
+ seq_printf(s, "regsd\t%u\n", hdmi.ip_data.pll_data.regsd);
+
+ hdmi_runtime_put();
+}
+
int omapdss_hdmi_read_edid(u8 *buf, int len)
{
int r;
--
1.7.5.4
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