C++ (Cpp) dsi_pll_calc_pck Examples

Example #1

File: dpi.c Project: dancing-leaves/nst-linux-kernel

static int dpi_check_timings(struct omap_dss_device *dssdev,
			struct omap_video_timings *timings)
{
	bool is_tft;
	int r;
	int lck_div, pck_div;
	unsigned long fck;
	unsigned long pck;

	if (!dispc_lcd_timings_ok(timings))
		return -EINVAL;

	if (timings->pixel_clock == 0)
		return -EINVAL;

	is_tft = (dssdev->panel.config & OMAP_DSS_LCD_TFT) != 0;

#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
	{
		struct dsi_clock_info cinfo;
		r = dsi_pll_calc_pck(is_tft, timings->pixel_clock * 1000,
				&cinfo);

		if (r)
			return r;

		fck = cinfo.dsi1_pll_fclk;
		lck_div = cinfo.lck_div;
		pck_div = cinfo.pck_div;
	}
#else
	{
		struct dispc_clock_info cinfo;
		r = dispc_calc_clock_div(is_tft, timings->pixel_clock * 1000,
				&cinfo);

		if (r)
			return r;

		fck = cinfo.fck;
		lck_div = cinfo.lck_div;
		pck_div = cinfo.pck_div;
	}
#endif

	pck = fck / lck_div / pck_div / 1000;

	timings->pixel_clock = pck;

	return 0;
}

Example #2

File: dpi.c Project: dancing-leaves/nst-linux-kernel

static int dpi_set_dsi_clk(bool is_tft, unsigned long pck_req,
		unsigned long *fck, int *lck_div, int *pck_div)
{
	struct dsi_clock_info cinfo;
	int r;

	r = dsi_pll_calc_pck(is_tft, pck_req, &cinfo);
	if (r)
		return r;

	r = dsi_pll_program(&cinfo);
	if (r)
		return r;

	dss_select_clk_source(0, 1);

	dispc_set_lcd_divisor(cinfo.lck_div, cinfo.pck_div);

	*fck = cinfo.dsi1_pll_fclk;
	*lck_div = cinfo.lck_div;
	*pck_div = cinfo.pck_div;

	return 0;
}

Example #3

static int dpi_check_timings(struct omap_display *display,
			struct omap_video_timings *timings)
{
	bool is_tft;
	int r;
	int lck_div, pck_div;
	unsigned long fck;
	unsigned long pck;

	if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
		if (timings->hsw < 1 || timings->hsw > 64 ||
				timings->hfp < 1 || timings->hfp > 256 ||
				timings->hbp < 1 || timings->hbp > 256) {
			return -EINVAL;
		}

		if (timings->vsw < 1 || timings->vsw > 64 ||
				timings->vfp > 255 || timings->vbp > 255) {
			return -EINVAL;
		}
	} else {
		if (timings->hsw < 1 || timings->hsw > 256 ||
				timings->hfp < 1 || timings->hfp > 4096 ||
				timings->hbp < 1 || timings->hbp > 4096) {
			return -EINVAL;
		}

		if (timings->vsw < 1 || timings->vsw > 64 ||
				timings->vfp > 4095 || timings->vbp > 4095) {
			return -EINVAL;
		}
	}

	if (timings->pixel_clock == 0)
		return -EINVAL;

	is_tft = (display->panel->config & OMAP_DSS_LCD_TFT) != 0;

#ifdef CONFIG_OMAP2_DSS_USE_DSI_PLL
	{
		struct dsi_clock_info cinfo;
		r = dsi_pll_calc_pck(is_tft, timings->pixel_clock * 1000,
				&cinfo);

		if (r)
			return r;

		fck = cinfo.dsi1_pll_fclk;
		lck_div = cinfo.lck_div;
		pck_div = cinfo.pck_div;
	}
#else
	{
		struct dispc_clock_info cinfo;
		r = dispc_calc_clock_div(is_tft, timings->pixel_clock * 1000,
				&cinfo);

		if (r)
			return r;

		fck = cinfo.fck;
		lck_div = cinfo.lck_div;
		pck_div = cinfo.pck_div;
	}
#endif

	pck = fck / lck_div / pck_div / 1000;

	timings->pixel_clock = pck;

	return 0;
}