From 0b27c81ba32de6f5eb9df769d839bab399c4c6de Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 25 Feb 2012 13:24:50 -0300 Subject: [media] v4l: Aptina-style sensor PLL support Add a generic helper function to compute PLL parameters for PLL found in several Aptina sensors. Signed-off-by: Laurent Pinchart Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/aptina-pll.h | 56 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 drivers/media/video/aptina-pll.h (limited to 'drivers/media/video/aptina-pll.h') diff --git a/drivers/media/video/aptina-pll.h b/drivers/media/video/aptina-pll.h new file mode 100644 index 000000000000..b370e341e75d --- /dev/null +++ b/drivers/media/video/aptina-pll.h @@ -0,0 +1,56 @@ +/* + * Aptina Sensor PLL Configuration + * + * Copyright (C) 2012 Laurent Pinchart + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef __APTINA_PLL_H +#define __APTINA_PLL_H + +struct aptina_pll { + unsigned int ext_clock; + unsigned int pix_clock; + + unsigned int n; + unsigned int m; + unsigned int p1; +}; + +struct aptina_pll_limits { + unsigned int ext_clock_min; + unsigned int ext_clock_max; + unsigned int int_clock_min; + unsigned int int_clock_max; + unsigned int out_clock_min; + unsigned int out_clock_max; + unsigned int pix_clock_max; + + unsigned int n_min; + unsigned int n_max; + unsigned int m_min; + unsigned int m_max; + unsigned int p1_min; + unsigned int p1_max; +}; + +struct device; + +int aptina_pll_calculate(struct device *dev, + const struct aptina_pll_limits *limits, + struct aptina_pll *pll); + +#endif /* __APTINA_PLL_H */ -- cgit v1.2.3