diff options
| author | Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> | 2011-12-07 20:45:25 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 15:57:02 +0400 |
| commit | cf1c5fae5f8a28d478b7177a2d83e42d25eab072 (patch) | |
| tree | e8a6ddfe3775a74413db9c5d674137a74e7e0a18 /drivers/media/video/smiapp-pll.h | |
| parent | a6d7a62dcd1fccb3140100551b205315491eadc5 (diff) | |
| download | linux-cf1c5fae5f8a28d478b7177a2d83e42d25eab072.tar.xz | |
[media] smiapp: Generic SMIA++/SMIA PLL calculator
Calculate PLL configuration based on input data: sensor configuration, board
properties and sensor-specific limits.
[mchehab@redhat.com: Fix a Kconfig conflict affecting APTINA_PLL]
Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/smiapp-pll.h')
| -rw-r--r-- | drivers/media/video/smiapp-pll.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/media/video/smiapp-pll.h b/drivers/media/video/smiapp-pll.h new file mode 100644 index 000000000000..9eab63f23afb --- /dev/null +++ b/drivers/media/video/smiapp-pll.h @@ -0,0 +1,103 @@ +/* + * drivers/media/video/smiapp-pll.h + * + * Generic driver for SMIA/SMIA++ compliant camera modules + * + * Copyright (C) 2012 Nokia Corporation + * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> + * + * 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 SMIAPP_PLL_H +#define SMIAPP_PLL_H + +#include <linux/device.h> + +struct smiapp_pll { + uint8_t lanes; + uint8_t binning_horizontal; + uint8_t binning_vertical; + uint8_t scale_m; + uint8_t scale_n; + uint8_t bits_per_pixel; + uint16_t flags; + uint32_t link_freq; + + uint16_t pre_pll_clk_div; + uint16_t pll_multiplier; + uint16_t op_sys_clk_div; + uint16_t op_pix_clk_div; + uint16_t vt_sys_clk_div; + uint16_t vt_pix_clk_div; + + uint32_t ext_clk_freq_hz; + uint32_t pll_ip_clk_freq_hz; + uint32_t pll_op_clk_freq_hz; + uint32_t op_sys_clk_freq_hz; + uint32_t op_pix_clk_freq_hz; + uint32_t vt_sys_clk_freq_hz; + uint32_t vt_pix_clk_freq_hz; + + uint32_t pixel_rate_csi; +}; + +struct smiapp_pll_limits { + /* Strict PLL limits */ + uint32_t min_ext_clk_freq_hz; + uint32_t max_ext_clk_freq_hz; + uint16_t min_pre_pll_clk_div; + uint16_t max_pre_pll_clk_div; + uint32_t min_pll_ip_freq_hz; + uint32_t max_pll_ip_freq_hz; + uint16_t min_pll_multiplier; + uint16_t max_pll_multiplier; + uint32_t min_pll_op_freq_hz; + uint32_t max_pll_op_freq_hz; + + uint16_t min_vt_sys_clk_div; + uint16_t max_vt_sys_clk_div; + uint32_t min_vt_sys_clk_freq_hz; + uint32_t max_vt_sys_clk_freq_hz; + uint16_t min_vt_pix_clk_div; + uint16_t max_vt_pix_clk_div; + uint32_t min_vt_pix_clk_freq_hz; + uint32_t max_vt_pix_clk_freq_hz; + + uint16_t min_op_sys_clk_div; + uint16_t max_op_sys_clk_div; + uint32_t min_op_sys_clk_freq_hz; + uint32_t max_op_sys_clk_freq_hz; + uint16_t min_op_pix_clk_div; + uint16_t max_op_pix_clk_div; + uint32_t min_op_pix_clk_freq_hz; + uint32_t max_op_pix_clk_freq_hz; + + /* Other relevant limits */ + uint32_t min_line_length_pck_bin; + uint32_t min_line_length_pck; +}; + +/* op pix clock is for all lanes in total normally */ +#define SMIAPP_PLL_FLAG_OP_PIX_CLOCK_PER_LANE (1 << 0) +#define SMIAPP_PLL_FLAG_NO_OP_CLOCKS (1 << 1) + +struct device; + +int smiapp_pll_calculate(struct device *dev, struct smiapp_pll_limits *limits, + struct smiapp_pll *pll); + +#endif /* SMIAPP_PLL_H */ |