a5c26ee572
The wm8940 provides the chip ID information via I2C. In this patch this information is read and if not matching expected value, the probe function is aborted. This prevents from using (i.e. inserting) other wm89* modules which use the same I2C bus address. Signed-off-by: Lukasz Majewski <lukma@denx.de> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20221216094624.3849278-3-lukma@denx.de Signed-off-by: Mark Brown <broonie@kernel.org>
103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* wm8940.h -- WM8940 Soc Audio driver
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*/
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#ifndef _WM8940_H
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#define _WM8940_H
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struct wm8940_setup_data {
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/* Vref to analogue output resistance */
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#define WM8940_VROI_1K 0
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#define WM8940_VROI_30K 1
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unsigned int vroi:1;
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};
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/* WM8940 register space */
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#define WM8940_SOFTRESET 0x00
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#define WM8940_POWER1 0x01
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#define WM8940_POWER2 0x02
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#define WM8940_POWER3 0x03
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#define WM8940_IFACE 0x04
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#define WM8940_COMPANDINGCTL 0x05
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#define WM8940_CLOCK 0x06
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#define WM8940_ADDCNTRL 0x07
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#define WM8940_GPIO 0x08
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#define WM8940_CTLINT 0x09
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#define WM8940_DAC 0x0A
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#define WM8940_DACVOL 0x0B
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#define WM8940_ADC 0x0E
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#define WM8940_ADCVOL 0x0F
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#define WM8940_NOTCH1 0x10
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#define WM8940_NOTCH2 0x11
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#define WM8940_NOTCH3 0x12
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#define WM8940_NOTCH4 0x13
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#define WM8940_NOTCH5 0x14
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#define WM8940_NOTCH6 0x15
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#define WM8940_NOTCH7 0x16
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#define WM8940_NOTCH8 0x17
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#define WM8940_DACLIM1 0x18
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#define WM8940_DACLIM2 0x19
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#define WM8940_ALC1 0x20
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#define WM8940_ALC2 0x21
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#define WM8940_ALC3 0x22
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#define WM8940_NOISEGATE 0x23
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#define WM8940_PLLN 0x24
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#define WM8940_PLLK1 0x25
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#define WM8940_PLLK2 0x26
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#define WM8940_PLLK3 0x27
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#define WM8940_ALC4 0x2A
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#define WM8940_INPUTCTL 0x2C
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#define WM8940_PGAGAIN 0x2D
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#define WM8940_ADCBOOST 0x2F
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#define WM8940_OUTPUTCTL 0x31
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#define WM8940_SPKMIX 0x32
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#define WM8940_SPKVOL 0x36
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#define WM8940_MONOMIX 0x38
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#define WM8940_CACHEREGNUM 0x57
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/* Clock divider Id's */
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#define WM8940_BCLKDIV 0
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#define WM8940_MCLKDIV 1
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#define WM8940_OPCLKDIV 2
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/* MCLK clock dividers */
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#define WM8940_MCLKDIV_1 0
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#define WM8940_MCLKDIV_1_5 1
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#define WM8940_MCLKDIV_2 2
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#define WM8940_MCLKDIV_3 3
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#define WM8940_MCLKDIV_4 4
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#define WM8940_MCLKDIV_6 5
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#define WM8940_MCLKDIV_8 6
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#define WM8940_MCLKDIV_12 7
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/* BCLK clock dividers */
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#define WM8940_BCLKDIV_1 0
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#define WM8940_BCLKDIV_2 1
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#define WM8940_BCLKDIV_4 2
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#define WM8940_BCLKDIV_8 3
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#define WM8940_BCLKDIV_16 4
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#define WM8940_BCLKDIV_32 5
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/* PLL Out Dividers */
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#define WM8940_OPCLKDIV_1 0
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#define WM8940_OPCLKDIV_2 1
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#define WM8940_OPCLKDIV_3 2
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#define WM8940_OPCLKDIV_4 3
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/* Chip ID */
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#define WM8940_CHIP_ID 0x8940
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#endif /* _WM8940_H */
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