From 7282f1b7c9b5210114ce1ebb0ea5fe8a63fd5778 Mon Sep 17 00:00:00 2001 From: Chandrabhanu Mahapatra Date: Mon, 19 Dec 2011 14:03:56 +0530 Subject: OMAPDSS: DISPC: Update Scaling Clock Logic Clock requirements for scaling in OMAP2, OMAP3 and OMAP4 are different. In OMAP2 and OMAP3 the required clock rate is a function of pixel clock, vertical downscale ratio and horizontal downscale ratio whereas in OMAP4 it is a function of pixel clock and horizontal downscale ratio only. Selection of 3-tap vs 5-tap coefficients depends on clock rate line buffer width in OMAP3 whereas in OMAP4 it is independent of clock rate and line buffer width. In OMAP2 3-tap for vertical and 5-tap for horizontal scaling is used. In OMAP4 5-tap is used both for horizontal and vertical scaling for better performance. Also, the number and width of line buffers differs in OMAP3 and OMAP4. So, clock functions have been fined tuned for OMAP3 and support has been added added for OMAP4. This code has been tested on OMAP2, OMAP3 and OMAP4, and scaling issues due to clock errors have been resolved. Signed-off-by: Chandrabhanu Mahapatra Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dss_features.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/video/omap2/dss/dss_features.c') diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c index b402699168a5..5e4b829605da 100644 --- a/drivers/video/omap2/dss/dss_features.c +++ b/drivers/video/omap2/dss/dss_features.c @@ -304,6 +304,11 @@ static const struct dss_param_range omap2_dss_param_range[] = { [FEAT_PARAM_DSIPLL_FINT] = { 0, 0 }, [FEAT_PARAM_DSIPLL_LPDIV] = { 0, 0 }, [FEAT_PARAM_DOWNSCALE] = { 1, 2 }, + /* + * Assuming the line width buffer to be 768 pixels as OMAP2 DISPC + * scaler cannot scale a image with width more than 768. + */ + [FEAT_PARAM_LINEWIDTH] = { 1, 768 }, }; static const struct dss_param_range omap3_dss_param_range[] = { @@ -316,6 +321,7 @@ static const struct dss_param_range omap3_dss_param_range[] = { [FEAT_PARAM_DSIPLL_FINT] = { 750000, 2100000 }, [FEAT_PARAM_DSIPLL_LPDIV] = { 1, (1 << 13) - 1}, [FEAT_PARAM_DOWNSCALE] = { 1, 4 }, + [FEAT_PARAM_LINEWIDTH] = { 1, 1024 }, }; static const struct dss_param_range omap4_dss_param_range[] = { @@ -328,6 +334,7 @@ static const struct dss_param_range omap4_dss_param_range[] = { [FEAT_PARAM_DSIPLL_FINT] = { 500000, 2500000 }, [FEAT_PARAM_DSIPLL_LPDIV] = { 0, (1 << 13) - 1 }, [FEAT_PARAM_DOWNSCALE] = { 1, 4 }, + [FEAT_PARAM_LINEWIDTH] = { 1, 2048 }, }; /* OMAP2 DSS Features */ -- cgit v1.2.3 From 80a485962807aae44a93197ee88854910bb935ad Mon Sep 17 00:00:00 2001 From: Ricardo Neri Date: Sun, 27 Nov 2011 16:09:58 -0600 Subject: OMAPDSS: HDMI: Create function to enable HDMI audio In order to separate clearly IP-specific code from general DSS code, a function for OMAP4 audio enable is created. This function is included in the HDMI IP ops to align with the current implementation of the DSS HDMI driver. This function is to be used by the ASoC HDMI audio codec. Signed-off-by: Ricardo Neri Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dss_features.c | 4 ++++ drivers/video/omap2/dss/ti_hdmi.h | 10 +++++++++- drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c | 30 ++++++++++++++++++------------ 3 files changed, 31 insertions(+), 13 deletions(-) (limited to 'drivers/video/omap2/dss/dss_features.c') diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c index 5e4b829605da..afcb59301c37 100644 --- a/drivers/video/omap2/dss/dss_features.c +++ b/drivers/video/omap2/dss/dss_features.c @@ -472,6 +472,10 @@ static const struct ti_hdmi_ip_ops omap4_hdmi_functions = { .dump_core = ti_hdmi_4xxx_core_dump, .dump_pll = ti_hdmi_4xxx_pll_dump, .dump_phy = ti_hdmi_4xxx_phy_dump, +#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ + defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) + .audio_enable = ti_hdmi_4xxx_wp_audio_enable, +#endif }; diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h index 2c3443dabb14..7503f7f619a7 100644 --- a/drivers/video/omap2/dss/ti_hdmi.h +++ b/drivers/video/omap2/dss/ti_hdmi.h @@ -110,6 +110,11 @@ struct ti_hdmi_ip_ops { void (*dump_phy)(struct hdmi_ip_data *ip_data, struct seq_file *s); +#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ + defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) + void (*audio_enable)(struct hdmi_ip_data *ip_data, bool start); +#endif + }; struct hdmi_ip_data { @@ -134,5 +139,8 @@ void ti_hdmi_4xxx_wp_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); void ti_hdmi_4xxx_pll_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); void ti_hdmi_4xxx_core_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); void ti_hdmi_4xxx_phy_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); - +#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \ + defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE) +void ti_hdmi_4xxx_wp_audio_enable(struct hdmi_ip_data *ip_data, bool enable); +#endif #endif diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c index 3f74f55269bd..220e0ce5e5ef 100644 --- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c +++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c @@ -1204,35 +1204,41 @@ int hdmi_config_audio_acr(struct hdmi_ip_data *ip_data, return 0; } +void ti_hdmi_4xxx_wp_audio_enable(struct hdmi_ip_data *ip_data, bool enable) +{ + REG_FLD_MOD(hdmi_av_base(ip_data), + HDMI_CORE_AV_AUD_MODE, enable, 0, 0); + REG_FLD_MOD(hdmi_wp_base(ip_data), + HDMI_WP_AUDIO_CTRL, enable, 31, 31); + REG_FLD_MOD(hdmi_wp_base(ip_data), + HDMI_WP_AUDIO_CTRL, enable, 30, 30); +} + int hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; + struct platform_device *pdev = to_platform_device(codec->dev); struct hdmi_ip_data *ip_data = snd_soc_codec_get_drvdata(codec); int err = 0; + if (!(ip_data->ops) && !(ip_data->ops->audio_enable)) { + dev_err(&pdev->dev, "Cannot enable/disable audio\n"); + return -ENODEV; + } + switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - REG_FLD_MOD(hdmi_av_base(ip_data), - HDMI_CORE_AV_AUD_MODE, 1, 0, 0); - REG_FLD_MOD(hdmi_wp_base(ip_data), - HDMI_WP_AUDIO_CTRL, 1, 31, 31); - REG_FLD_MOD(hdmi_wp_base(ip_data), - HDMI_WP_AUDIO_CTRL, 1, 30, 30); + ip_data->ops->audio_enable(ip_data, true); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - REG_FLD_MOD(hdmi_av_base(ip_data), - HDMI_CORE_AV_AUD_MODE, 0, 0, 0); - REG_FLD_MOD(hdmi_wp_base(ip_data), - HDMI_WP_AUDIO_CTRL, 0, 30, 30); - REG_FLD_MOD(hdmi_wp_base(ip_data), - HDMI_WP_AUDIO_CTRL, 0, 31, 31); + ip_data->ops->audio_enable(ip_data, false); break; default: err = -EINVAL; -- cgit v1.2.3