diff options
Diffstat (limited to 'sound/soc/stm/stm32_sai.h')
| -rw-r--r-- | sound/soc/stm/stm32_sai.h | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/sound/soc/stm/stm32_sai.h b/sound/soc/stm/stm32_sai.h new file mode 100644 index 000000000..33e4bff8c --- /dev/null +++ b/sound/soc/stm/stm32_sai.h @@ -0,0 +1,302 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * STM32 ALSA SoC Digital Audio Interface (SAI) driver. + * + * Copyright (C) 2016, STMicroelectronics - All Rights Reserved + * Author(s): Olivier Moysan <olivier.moysan@st.com> for STMicroelectronics. + */ + +#include <linux/bitfield.h> + +/******************** SAI Register Map **************************************/ + +/* Global configuration register */ +#define STM_SAI_GCR 0x00 + +/* Sub-block A&B registers offsets, relative to A&B sub-block addresses */ +#define STM_SAI_CR1_REGX 0x00 /* A offset: 0x04. B offset: 0x24 */ +#define STM_SAI_CR2_REGX 0x04 +#define STM_SAI_FRCR_REGX 0x08 +#define STM_SAI_SLOTR_REGX 0x0C +#define STM_SAI_IMR_REGX 0x10 +#define STM_SAI_SR_REGX 0x14 +#define STM_SAI_CLRFR_REGX 0x18 +#define STM_SAI_DR_REGX 0x1C + +/* Sub-block A registers, relative to sub-block A address */ +#define STM_SAI_PDMCR_REGX 0x40 +#define STM_SAI_PDMLY_REGX 0x44 + +/* Hardware configuration registers */ +#define STM_SAI_HWCFGR 0x3F0 +#define STM_SAI_VERR 0x3F4 +#define STM_SAI_IDR 0x3F8 +#define STM_SAI_SIDR 0x3FC + +/******************** Bit definition for SAI_GCR register *******************/ +#define SAI_GCR_SYNCIN_SHIFT 0 +#define SAI_GCR_SYNCIN_WDTH 2 +#define SAI_GCR_SYNCIN_MASK GENMASK(1, SAI_GCR_SYNCIN_SHIFT) +#define SAI_GCR_SYNCIN_MAX FIELD_GET(SAI_GCR_SYNCIN_MASK,\ + SAI_GCR_SYNCIN_MASK) + +#define SAI_GCR_SYNCOUT_SHIFT 4 +#define SAI_GCR_SYNCOUT_MASK GENMASK(5, SAI_GCR_SYNCOUT_SHIFT) + +/******************* Bit definition for SAI_XCR1 register *******************/ +#define SAI_XCR1_RX_TX_SHIFT 0 +#define SAI_XCR1_RX_TX BIT(SAI_XCR1_RX_TX_SHIFT) +#define SAI_XCR1_SLAVE_SHIFT 1 +#define SAI_XCR1_SLAVE BIT(SAI_XCR1_SLAVE_SHIFT) + +#define SAI_XCR1_PRTCFG_SHIFT 2 +#define SAI_XCR1_PRTCFG_MASK GENMASK(3, SAI_XCR1_PRTCFG_SHIFT) +#define SAI_XCR1_PRTCFG_SET(x) ((x) << SAI_XCR1_PRTCFG_SHIFT) + +#define SAI_XCR1_DS_SHIFT 5 +#define SAI_XCR1_DS_MASK GENMASK(7, SAI_XCR1_DS_SHIFT) +#define SAI_XCR1_DS_SET(x) ((x) << SAI_XCR1_DS_SHIFT) + +#define SAI_XCR1_LSBFIRST_SHIFT 8 +#define SAI_XCR1_LSBFIRST BIT(SAI_XCR1_LSBFIRST_SHIFT) +#define SAI_XCR1_CKSTR_SHIFT 9 +#define SAI_XCR1_CKSTR BIT(SAI_XCR1_CKSTR_SHIFT) + +#define SAI_XCR1_SYNCEN_SHIFT 10 +#define SAI_XCR1_SYNCEN_MASK GENMASK(11, SAI_XCR1_SYNCEN_SHIFT) +#define SAI_XCR1_SYNCEN_SET(x) ((x) << SAI_XCR1_SYNCEN_SHIFT) + +#define SAI_XCR1_MONO_SHIFT 12 +#define SAI_XCR1_MONO BIT(SAI_XCR1_MONO_SHIFT) +#define SAI_XCR1_OUTDRIV_SHIFT 13 +#define SAI_XCR1_OUTDRIV BIT(SAI_XCR1_OUTDRIV_SHIFT) +#define SAI_XCR1_SAIEN_SHIFT 16 +#define SAI_XCR1_SAIEN BIT(SAI_XCR1_SAIEN_SHIFT) +#define SAI_XCR1_DMAEN_SHIFT 17 +#define SAI_XCR1_DMAEN BIT(SAI_XCR1_DMAEN_SHIFT) +#define SAI_XCR1_NODIV_SHIFT 19 +#define SAI_XCR1_NODIV BIT(SAI_XCR1_NODIV_SHIFT) + +#define SAI_XCR1_MCKDIV_SHIFT 20 +#define SAI_XCR1_MCKDIV_WIDTH(x) (((x) == STM_SAI_STM32F4) ? 4 : 6) +#define SAI_XCR1_MCKDIV_MASK(x) GENMASK((SAI_XCR1_MCKDIV_SHIFT + (x) - 1),\ + SAI_XCR1_MCKDIV_SHIFT) +#define SAI_XCR1_MCKDIV_SET(x) ((x) << SAI_XCR1_MCKDIV_SHIFT) +#define SAI_XCR1_MCKDIV_MAX(x) ((1 << SAI_XCR1_MCKDIV_WIDTH(x)) - 1) + +#define SAI_XCR1_OSR_SHIFT 26 +#define SAI_XCR1_OSR BIT(SAI_XCR1_OSR_SHIFT) + +#define SAI_XCR1_MCKEN_SHIFT 27 +#define SAI_XCR1_MCKEN BIT(SAI_XCR1_MCKEN_SHIFT) + +/******************* Bit definition for SAI_XCR2 register *******************/ +#define SAI_XCR2_FTH_SHIFT 0 +#define SAI_XCR2_FTH_MASK GENMASK(2, SAI_XCR2_FTH_SHIFT) +#define SAI_XCR2_FTH_SET(x) ((x) << SAI_XCR2_FTH_SHIFT) + +#define SAI_XCR2_FFLUSH_SHIFT 3 +#define SAI_XCR2_FFLUSH BIT(SAI_XCR2_FFLUSH_SHIFT) +#define SAI_XCR2_TRIS_SHIFT 4 +#define SAI_XCR2_TRIS BIT(SAI_XCR2_TRIS_SHIFT) +#define SAI_XCR2_MUTE_SHIFT 5 +#define SAI_XCR2_MUTE BIT(SAI_XCR2_MUTE_SHIFT) +#define SAI_XCR2_MUTEVAL_SHIFT 6 +#define SAI_XCR2_MUTEVAL BIT(SAI_XCR2_MUTEVAL_SHIFT) + +#define SAI_XCR2_MUTECNT_SHIFT 7 +#define SAI_XCR2_MUTECNT_MASK GENMASK(12, SAI_XCR2_MUTECNT_SHIFT) +#define SAI_XCR2_MUTECNT_SET(x) ((x) << SAI_XCR2_MUTECNT_SHIFT) + +#define SAI_XCR2_CPL_SHIFT 13 +#define SAI_XCR2_CPL BIT(SAI_XCR2_CPL_SHIFT) + +#define SAI_XCR2_COMP_SHIFT 14 +#define SAI_XCR2_COMP_MASK GENMASK(15, SAI_XCR2_COMP_SHIFT) +#define SAI_XCR2_COMP_SET(x) ((x) << SAI_XCR2_COMP_SHIFT) + +/****************** Bit definition for SAI_XFRCR register *******************/ +#define SAI_XFRCR_FRL_SHIFT 0 +#define SAI_XFRCR_FRL_MASK GENMASK(7, SAI_XFRCR_FRL_SHIFT) +#define SAI_XFRCR_FRL_SET(x) ((x) << SAI_XFRCR_FRL_SHIFT) + +#define SAI_XFRCR_FSALL_SHIFT 8 +#define SAI_XFRCR_FSALL_MASK GENMASK(14, SAI_XFRCR_FSALL_SHIFT) +#define SAI_XFRCR_FSALL_SET(x) ((x) << SAI_XFRCR_FSALL_SHIFT) + +#define SAI_XFRCR_FSDEF_SHIFT 16 +#define SAI_XFRCR_FSDEF BIT(SAI_XFRCR_FSDEF_SHIFT) +#define SAI_XFRCR_FSPOL_SHIFT 17 +#define SAI_XFRCR_FSPOL BIT(SAI_XFRCR_FSPOL_SHIFT) +#define SAI_XFRCR_FSOFF_SHIFT 18 +#define SAI_XFRCR_FSOFF BIT(SAI_XFRCR_FSOFF_SHIFT) + +/****************** Bit definition for SAI_XSLOTR register ******************/ +#define SAI_XSLOTR_FBOFF_SHIFT 0 +#define SAI_XSLOTR_FBOFF_MASK GENMASK(4, SAI_XSLOTR_FBOFF_SHIFT) +#define SAI_XSLOTR_FBOFF_SET(x) ((x) << SAI_XSLOTR_FBOFF_SHIFT) + +#define SAI_XSLOTR_SLOTSZ_SHIFT 6 +#define SAI_XSLOTR_SLOTSZ_MASK GENMASK(7, SAI_XSLOTR_SLOTSZ_SHIFT) +#define SAI_XSLOTR_SLOTSZ_SET(x) ((x) << SAI_XSLOTR_SLOTSZ_SHIFT) + +#define SAI_XSLOTR_NBSLOT_SHIFT 8 +#define SAI_XSLOTR_NBSLOT_MASK GENMASK(11, SAI_XSLOTR_NBSLOT_SHIFT) +#define SAI_XSLOTR_NBSLOT_SET(x) ((x) << SAI_XSLOTR_NBSLOT_SHIFT) + +#define SAI_XSLOTR_SLOTEN_SHIFT 16 +#define SAI_XSLOTR_SLOTEN_WIDTH 16 +#define SAI_XSLOTR_SLOTEN_MASK GENMASK(31, SAI_XSLOTR_SLOTEN_SHIFT) +#define SAI_XSLOTR_SLOTEN_SET(x) ((x) << SAI_XSLOTR_SLOTEN_SHIFT) + +/******************* Bit definition for SAI_XIMR register *******************/ +#define SAI_XIMR_OVRUDRIE BIT(0) +#define SAI_XIMR_MUTEDETIE BIT(1) +#define SAI_XIMR_WCKCFGIE BIT(2) +#define SAI_XIMR_FREQIE BIT(3) +#define SAI_XIMR_CNRDYIE BIT(4) +#define SAI_XIMR_AFSDETIE BIT(5) +#define SAI_XIMR_LFSDETIE BIT(6) + +#define SAI_XIMR_SHIFT 0 +#define SAI_XIMR_MASK GENMASK(6, SAI_XIMR_SHIFT) + +/******************** Bit definition for SAI_XSR register *******************/ +#define SAI_XSR_OVRUDR BIT(0) +#define SAI_XSR_MUTEDET BIT(1) +#define SAI_XSR_WCKCFG BIT(2) +#define SAI_XSR_FREQ BIT(3) +#define SAI_XSR_CNRDY BIT(4) +#define SAI_XSR_AFSDET BIT(5) +#define SAI_XSR_LFSDET BIT(6) + +#define SAI_XSR_SHIFT 0 +#define SAI_XSR_MASK GENMASK(6, SAI_XSR_SHIFT) + +/****************** Bit definition for SAI_XCLRFR register ******************/ +#define SAI_XCLRFR_COVRUDR BIT(0) +#define SAI_XCLRFR_CMUTEDET BIT(1) +#define SAI_XCLRFR_CWCKCFG BIT(2) +#define SAI_XCLRFR_CFREQ BIT(3) +#define SAI_XCLRFR_CCNRDY BIT(4) +#define SAI_XCLRFR_CAFSDET BIT(5) +#define SAI_XCLRFR_CLFSDET BIT(6) + +#define SAI_XCLRFR_SHIFT 0 +#define SAI_XCLRFR_MASK GENMASK(6, SAI_XCLRFR_SHIFT) + +/****************** Bit definition for SAI_PDMCR register ******************/ +#define SAI_PDMCR_PDMEN BIT(0) + +#define SAI_PDMCR_MICNBR_SHIFT 4 +#define SAI_PDMCR_MICNBR_MASK GENMASK(5, SAI_PDMCR_MICNBR_SHIFT) +#define SAI_PDMCR_MICNBR_SET(x) ((x) << SAI_PDMCR_MICNBR_SHIFT) + +#define SAI_PDMCR_CKEN1 BIT(8) +#define SAI_PDMCR_CKEN2 BIT(9) +#define SAI_PDMCR_CKEN3 BIT(10) +#define SAI_PDMCR_CKEN4 BIT(11) + +/****************** Bit definition for (SAI_PDMDLY register ****************/ +#define SAI_PDMDLY_1L_SHIFT 0 +#define SAI_PDMDLY_1L_MASK GENMASK(2, SAI_PDMDLY_1L_SHIFT) +#define SAI_PDMDLY_1L_WIDTH 3 + +#define SAI_PDMDLY_1R_SHIFT 4 +#define SAI_PDMDLY_1R_MASK GENMASK(6, SAI_PDMDLY_1R_SHIFT) +#define SAI_PDMDLY_1R_WIDTH 3 + +#define SAI_PDMDLY_2L_SHIFT 8 +#define SAI_PDMDLY_2L_MASK GENMASK(10, SAI_PDMDLY_2L_SHIFT) +#define SAI_PDMDLY_2L_WIDTH 3 + +#define SAI_PDMDLY_2R_SHIFT 12 +#define SAI_PDMDLY_2R_MASK GENMASK(14, SAI_PDMDLY_2R_SHIFT) +#define SAI_PDMDLY_2R_WIDTH 3 + +#define SAI_PDMDLY_3L_SHIFT 16 +#define SAI_PDMDLY_3L_MASK GENMASK(18, SAI_PDMDLY_3L_SHIFT) +#define SAI_PDMDLY_3L_WIDTH 3 + +#define SAI_PDMDLY_3R_SHIFT 20 +#define SAI_PDMDLY_3R_MASK GENMASK(22, SAI_PDMDLY_3R_SHIFT) +#define SAI_PDMDLY_3R_WIDTH 3 + +#define SAI_PDMDLY_4L_SHIFT 24 +#define SAI_PDMDLY_4L_MASK GENMASK(26, SAI_PDMDLY_4L_SHIFT) +#define SAI_PDMDLY_4L_WIDTH 3 + +#define SAI_PDMDLY_4R_SHIFT 28 +#define SAI_PDMDLY_4R_MASK GENMASK(30, SAI_PDMDLY_4R_SHIFT) +#define SAI_PDMDLY_4R_WIDTH 3 + +/* Registers below apply to SAI version 2.1 and more */ + +/* Bit definition for SAI_HWCFGR register */ +#define SAI_HWCFGR_FIFO_SIZE GENMASK(7, 0) +#define SAI_HWCFGR_SPDIF_PDM GENMASK(11, 8) +#define SAI_HWCFGR_REGOUT GENMASK(19, 12) + +/* Bit definition for SAI_VERR register */ +#define SAI_VERR_MIN_MASK GENMASK(3, 0) +#define SAI_VERR_MAJ_MASK GENMASK(7, 4) + +/* Bit definition for SAI_IDR register */ +#define SAI_IDR_ID_MASK GENMASK(31, 0) + +/* Bit definition for SAI_SIDR register */ +#define SAI_SIDR_ID_MASK GENMASK(31, 0) + +#define SAI_IPIDR_NUMBER 0x00130031 + +/* SAI version numbers are 1.x for F4. Major version number set to 1 for F4 */ +#define STM_SAI_STM32F4 BIT(4) +/* Dummy version number for H7 socs and next */ +#define STM_SAI_STM32H7 0x0 + +#define STM_SAI_IS_F4(ip) ((ip)->conf.version == STM_SAI_STM32F4) +#define STM_SAI_HAS_SPDIF_PDM(ip)\ + ((ip)->pdata->conf.has_spdif_pdm) + +enum stm32_sai_syncout { + STM_SAI_SYNC_OUT_NONE, + STM_SAI_SYNC_OUT_A, + STM_SAI_SYNC_OUT_B, +}; + +/** + * struct stm32_sai_conf - SAI configuration + * @version: SAI version + * @fifo_size: SAI fifo size as words number + * @has_spdif_pdm: SAI S/PDIF and PDM features support flag + */ +struct stm32_sai_conf { + u32 version; + u32 fifo_size; + bool has_spdif_pdm; +}; + +/** + * struct stm32_sai_data - private data of SAI instance driver + * @pdev: device data pointer + * @base: common register bank virtual base address + * @pclk: SAI bus clock + * @clk_x8k: SAI parent clock for sampling frequencies multiple of 8kHz + * @clk_x11k: SAI parent clock for sampling frequencies multiple of 11kHz + * @conf: SAI hardware capabitilites + * @irq: SAI interrupt line + * @set_sync: pointer to synchro mode configuration callback + * @gcr: SAI Global Configuration Register + */ +struct stm32_sai_data { + struct platform_device *pdev; + void __iomem *base; + struct clk *pclk; + struct clk *clk_x8k; + struct clk *clk_x11k; + struct stm32_sai_conf conf; + int irq; + int (*set_sync)(struct stm32_sai_data *sai, + struct device_node *np_provider, int synco, int synci); + u32 gcr; +}; |