add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/iio/adc/stm32-dfsdm.h
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@@ -243,19 +243,35 @@
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 };
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 /**
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- * struct stm32_dfsdm_filter - structure relative to stm32 FDSDM filter
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+ * struct stm32_dfsdm_filter_osr - DFSDM filter settings linked to oversampling
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  * @iosr: integrator oversampling
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  * @fosr: filter oversampling
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- * @ford: filter order
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+ * @rshift: output sample right shift (hardware shift)
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+ * @lshift: output sample left shift (software shift)
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  * @res: output sample resolution
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+ * @bits: output sample resolution in bits
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+ * @max: output sample maximum positive value
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+ */
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+struct stm32_dfsdm_filter_osr {
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+	unsigned int iosr;
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+	unsigned int fosr;
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+	unsigned int rshift;
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+	unsigned int lshift;
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+	u64 res;
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+	u32 bits;
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+	s32 max;
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+};
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+
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+/**
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+ * struct stm32_dfsdm_filter - structure relative to stm32 FDSDM filter
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+ * @ford: filter order
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+ * @flo: filter oversampling data table indexed by fast mode flag
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  * @sync_mode: filter synchronized with filter 0
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  * @fast: filter fast mode
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  */
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 struct stm32_dfsdm_filter {
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-	unsigned int iosr;
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-	unsigned int fosr;
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 	enum stm32_dfsdm_sinc_order ford;
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-	u64 res;
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+	struct stm32_dfsdm_filter_osr flo[2];
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 	unsigned int sync_mode;
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 	unsigned int fast;
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 };