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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-08-22 13:16:24 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-09-30 16:16:41 +0300 |
| commit | b44e45825dbe30f32c770b98c38555b6bd331760 (patch) | |
| tree | d465a3954443a86e6c0ee1e688b93b78b9c8cbaf | |
| parent | 8d88767a4377171752c22ac39bcb2b505eb751da (diff) | |
| download | linux-b44e45825dbe30f32c770b98c38555b6bd331760.tar.gz linux-b44e45825dbe30f32c770b98c38555b6bd331760.tar.bz2 linux-b44e45825dbe30f32c770b98c38555b6bd331760.zip | |
OMAP: DSS2: HDMI: change regn definition
regn divider is currently programmed to the registers without change,
but when calculating clock frequencies it is used as regn+1.
To make this similar to how DSI handles the dividers this patch changes
the regn value to be used as such for calculations, but the value
programmed to registers is regn-1.
This simplifies the clock frequency calculations, makes it similar to
DSI, and also allows us to use regn value 0 as undefined.
Cc: Mythri P K <mythripk@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
| -rw-r--r-- | drivers/video/omap2/dss/hdmi.c | 6 | ||||
| -rw-r--r-- | drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c | 2 | ||||
| -rw-r--r-- | include/video/omapdss.h | 1 |
3 files changed, 5 insertions, 4 deletions
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index 52731b5e10f0..4752137b226a 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -60,7 +60,7 @@ #define OMAP_HDMI_TIMINGS_NB 34 -#define HDMI_DEFAULT_REGN 15 +#define HDMI_DEFAULT_REGN 16 #define HDMI_DEFAULT_REGM2 1 static struct { @@ -426,7 +426,7 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy, else pi->regn = dssdev->clocks.hdmi.regn; - refclk = clkin / (pi->regn + 1); + refclk = clkin / pi->regn; /* * multiplier is pixel_clk/ref_clk @@ -452,7 +452,7 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy, * is greater than 1000MHz */ pi->dcofreq = phy > 1000 * 100; - pi->regsd = ((pi->regm * clkin / 10) / ((pi->regn + 1) * 250) + 5) / 10; + pi->regsd = ((pi->regm * clkin / 10) / (pi->regn * 250) + 5) / 10; /* Set the reference clock to sysclk reference */ pi->refsel = HDMI_REFSEL_SYSCLK; diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c index cb3a2d6753de..403c66241477 100644 --- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c +++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c @@ -92,7 +92,7 @@ static int hdmi_pll_init(struct hdmi_ip_data *ip_data) r = hdmi_read_reg(pll_base, PLLCTRL_CFG1); r = FLD_MOD(r, fmt->regm, 20, 9); /* CFG1_PLL_REGM */ - r = FLD_MOD(r, fmt->regn, 8, 1); /* CFG1_PLL_REGN */ + r = FLD_MOD(r, fmt->regn - 1, 8, 1); /* CFG1_PLL_REGN */ hdmi_write_reg(pll_base, PLLCTRL_CFG1, r); diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 44f423ff64bd..c7cfdad81242 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -520,6 +520,7 @@ struct omap_dss_device { } dsi; struct { + /* regn is one greater than TRM's REGN value */ u16 regn; u16 regm2; } hdmi; |