diff options
Diffstat (limited to 'sound/soc/stm/stm32_sai.h')
| -rw-r--r-- | sound/soc/stm/stm32_sai.h | 66 |
1 files changed, 42 insertions, 24 deletions
diff --git a/sound/soc/stm/stm32_sai.h b/sound/soc/stm/stm32_sai.h index 9c36a393ab7b..33e4bff8c2f5 100644 --- a/sound/soc/stm/stm32_sai.h +++ b/sound/soc/stm/stm32_sai.h @@ -1,19 +1,9 @@ +/* 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. - * - * License terms: GPL V2.0. - * - * 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. */ #include <linux/bitfield.h> @@ -37,6 +27,12 @@ #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 @@ -82,7 +78,7 @@ #define SAI_XCR1_NODIV BIT(SAI_XCR1_NODIV_SHIFT) #define SAI_XCR1_MCKDIV_SHIFT 20 -#define SAI_XCR1_MCKDIV_WIDTH(x) (((x) == SAI_STM32F4) ? 4 : 6) +#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) @@ -234,8 +230,33 @@ #define SAI_PDMDLY_4R_MASK GENMASK(30, SAI_PDMDLY_4R_SHIFT) #define SAI_PDMDLY_4R_WIDTH 3 -#define STM_SAI_IS_F4(ip) ((ip)->conf->version == SAI_STM32F4) -#define STM_SAI_IS_H7(ip) ((ip)->conf->version == SAI_STM32H7) +/* 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, @@ -243,19 +264,16 @@ enum stm32_sai_syncout { STM_SAI_SYNC_OUT_B, }; -enum stm32_sai_version { - SAI_STM32F4, - SAI_STM32H7 -}; - /** * struct stm32_sai_conf - SAI configuration * @version: SAI version - * @has_spdif: SAI S/PDIF support flag + * @fifo_size: SAI fifo size as words number + * @has_spdif_pdm: SAI S/PDIF and PDM features support flag */ struct stm32_sai_conf { - int version; - bool has_spdif; + u32 version; + u32 fifo_size; + bool has_spdif_pdm; }; /** @@ -265,7 +283,7 @@ struct stm32_sai_conf { * @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 - * @version: SOC version + * @conf: SAI hardware capabitilites * @irq: SAI interrupt line * @set_sync: pointer to synchro mode configuration callback * @gcr: SAI Global Configuration Register @@ -276,7 +294,7 @@ struct stm32_sai_data { struct clk *pclk; struct clk *clk_x8k; struct clk *clk_x11k; - struct stm32_sai_conf *conf; + struct stm32_sai_conf conf; int irq; int (*set_sync)(struct stm32_sai_data *sai, struct device_node *np_provider, int synco, int synci); |