Initial import

1 files changed, 107 insertions, 0 deletions

diff --git a/drivers/media/i2c/smiapp-pll.h b/drivers/media/i2c/smiapp-pll.h
new file mode 100644
index 000000000..b98d143b6
--- /dev/null
+++ b/drivers/media/i2c/smiapp-pll.h
@@ -0,0 +1,107 @@
+/*
+ * drivers/media/i2c/smiapp-pll.h
+ *
+ * Generic driver for SMIA/SMIA++ compliant camera modules
+ *
+ * Copyright (C) 2012 Nokia Corporation
+ * Contact: Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * 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.
+ */
+
+#ifndef SMIAPP_PLL_H
+#define SMIAPP_PLL_H
+
+/* CSI-2 or CCP-2 */
+#define SMIAPP_PLL_BUS_TYPE_CSI2				0x00
+#define SMIAPP_PLL_BUS_TYPE_PARALLEL				0x01
+
+/* 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 smiapp_pll_branch {
+	uint16_t sys_clk_div;
+	uint16_t pix_clk_div;
+	uint32_t sys_clk_freq_hz;
+	uint32_t pix_clk_freq_hz;
+};
+
+struct smiapp_pll {
+	/* input values */
+	uint8_t bus_type;
+	union {
+		struct {
+			uint8_t lanes;
+		} csi2;
+		struct {
+			uint8_t bus_width;
+		} parallel;
+	};
+	unsigned long flags;
+	uint8_t binning_horizontal;
+	uint8_t binning_vertical;
+	uint8_t scale_m;
+	uint8_t scale_n;
+	uint8_t bits_per_pixel;
+	uint32_t link_freq;
+	uint32_t ext_clk_freq_hz;
+
+	/* output values */
+	uint16_t pre_pll_clk_div;
+	uint16_t pll_multiplier;
+	uint32_t pll_ip_clk_freq_hz;
+	uint32_t pll_op_clk_freq_hz;
+	struct smiapp_pll_branch vt;
+	struct smiapp_pll_branch op;
+
+	uint32_t pixel_rate_csi;
+	uint32_t pixel_rate_pixel_array;
+};
+
+struct smiapp_pll_branch_limits {
+	uint16_t min_sys_clk_div;
+	uint16_t max_sys_clk_div;
+	uint32_t min_sys_clk_freq_hz;
+	uint32_t max_sys_clk_freq_hz;
+	uint16_t min_pix_clk_div;
+	uint16_t max_pix_clk_div;
+	uint32_t min_pix_clk_freq_hz;
+	uint32_t max_pix_clk_freq_hz;
+};
+
+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;
+
+	struct smiapp_pll_branch_limits vt;
+	struct smiapp_pll_branch_limits op;
+
+	/* Other relevant limits */
+	uint32_t min_line_length_pck_bin;
+	uint32_t min_line_length_pck;
+};
+
+struct device;
+
+int smiapp_pll_calculate(struct device *dev,
+			 const struct smiapp_pll_limits *limits,
+			 struct smiapp_pll *pll);
+
+#endif /* SMIAPP_PLL_H */