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227ab8baa1
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Mark Brown <broonie@kernel.org>
324 lines
10 KiB
C
324 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* fsl_ssi.h - ALSA SSI interface for the Freescale MPC8610 and i.MX SoC
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*
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* Author: Timur Tabi <timur@freescale.com>
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*
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* Copyright 2007-2008 Freescale Semiconductor, Inc.
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*/
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#ifndef _MPC8610_I2S_H
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#define _MPC8610_I2S_H
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/* -- SSI Register Map -- */
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/* SSI Transmit Data Register 0 */
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#define REG_SSI_STX0 0x00
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/* SSI Transmit Data Register 1 */
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#define REG_SSI_STX1 0x04
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/* SSI Receive Data Register 0 */
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#define REG_SSI_SRX0 0x08
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/* SSI Receive Data Register 1 */
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#define REG_SSI_SRX1 0x0c
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/* SSI Control Register */
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#define REG_SSI_SCR 0x10
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/* SSI Interrupt Status Register */
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#define REG_SSI_SISR 0x14
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/* SSI Interrupt Enable Register */
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#define REG_SSI_SIER 0x18
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/* SSI Transmit Configuration Register */
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#define REG_SSI_STCR 0x1c
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/* SSI Receive Configuration Register */
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#define REG_SSI_SRCR 0x20
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#define REG_SSI_SxCR(tx) ((tx) ? REG_SSI_STCR : REG_SSI_SRCR)
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/* SSI Transmit Clock Control Register */
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#define REG_SSI_STCCR 0x24
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/* SSI Receive Clock Control Register */
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#define REG_SSI_SRCCR 0x28
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#define REG_SSI_SxCCR(tx) ((tx) ? REG_SSI_STCCR : REG_SSI_SRCCR)
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/* SSI FIFO Control/Status Register */
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#define REG_SSI_SFCSR 0x2c
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/*
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* SSI Test Register (Intended for debugging purposes only)
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*
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* Note: STR is not documented in recent IMX datasheet, but
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* is described in IMX51 reference manual at section 56.3.3.14
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*/
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#define REG_SSI_STR 0x30
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/*
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* SSI Option Register (Intended for internal use only)
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*
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* Note: SOR is not documented in recent IMX datasheet, but
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* is described in IMX51 reference manual at section 56.3.3.15
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*/
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#define REG_SSI_SOR 0x34
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/* SSI AC97 Control Register */
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#define REG_SSI_SACNT 0x38
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/* SSI AC97 Command Address Register */
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#define REG_SSI_SACADD 0x3c
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/* SSI AC97 Command Data Register */
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#define REG_SSI_SACDAT 0x40
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/* SSI AC97 Tag Register */
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#define REG_SSI_SATAG 0x44
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/* SSI Transmit Time Slot Mask Register */
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#define REG_SSI_STMSK 0x48
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/* SSI Receive Time Slot Mask Register */
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#define REG_SSI_SRMSK 0x4c
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#define REG_SSI_SxMSK(tx) ((tx) ? REG_SSI_STMSK : REG_SSI_SRMSK)
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/*
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* SSI AC97 Channel Status Register
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*
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* The status could be changed by:
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* 1) Writing a '1' bit at some position in SACCEN sets relevant bit in SACCST
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* 2) Writing a '1' bit at some position in SACCDIS unsets the relevant bit
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* 3) Receivng a '1' in SLOTREQ bit from external CODEC via AC Link
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*/
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#define REG_SSI_SACCST 0x50
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/* SSI AC97 Channel Enable Register -- Set bits in SACCST */
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#define REG_SSI_SACCEN 0x54
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/* SSI AC97 Channel Disable Register -- Clear bits in SACCST */
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#define REG_SSI_SACCDIS 0x58
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/* -- SSI Register Field Maps -- */
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/* SSI Control Register -- REG_SSI_SCR 0x10 */
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#define SSI_SCR_SYNC_TX_FS 0x00001000
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#define SSI_SCR_RFR_CLK_DIS 0x00000800
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#define SSI_SCR_TFR_CLK_DIS 0x00000400
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#define SSI_SCR_TCH_EN 0x00000100
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#define SSI_SCR_SYS_CLK_EN 0x00000080
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#define SSI_SCR_I2S_MODE_MASK 0x00000060
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#define SSI_SCR_I2S_MODE_NORMAL 0x00000000
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#define SSI_SCR_I2S_MODE_MASTER 0x00000020
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#define SSI_SCR_I2S_MODE_SLAVE 0x00000040
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#define SSI_SCR_SYN 0x00000010
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#define SSI_SCR_NET 0x00000008
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#define SSI_SCR_I2S_NET_MASK (SSI_SCR_NET | SSI_SCR_I2S_MODE_MASK)
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#define SSI_SCR_RE 0x00000004
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#define SSI_SCR_TE 0x00000002
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#define SSI_SCR_SSIEN 0x00000001
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/* SSI Interrupt Status Register -- REG_SSI_SISR 0x14 */
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#define SSI_SISR_RFRC 0x01000000
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#define SSI_SISR_TFRC 0x00800000
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#define SSI_SISR_CMDAU 0x00040000
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#define SSI_SISR_CMDDU 0x00020000
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#define SSI_SISR_RXT 0x00010000
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#define SSI_SISR_RDR1 0x00008000
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#define SSI_SISR_RDR0 0x00004000
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#define SSI_SISR_TDE1 0x00002000
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#define SSI_SISR_TDE0 0x00001000
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#define SSI_SISR_ROE1 0x00000800
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#define SSI_SISR_ROE0 0x00000400
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#define SSI_SISR_TUE1 0x00000200
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#define SSI_SISR_TUE0 0x00000100
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#define SSI_SISR_TFS 0x00000080
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#define SSI_SISR_RFS 0x00000040
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#define SSI_SISR_TLS 0x00000020
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#define SSI_SISR_RLS 0x00000010
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#define SSI_SISR_RFF1 0x00000008
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#define SSI_SISR_RFF0 0x00000004
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#define SSI_SISR_TFE1 0x00000002
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#define SSI_SISR_TFE0 0x00000001
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/* SSI Interrupt Enable Register -- REG_SSI_SIER 0x18 */
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#define SSI_SIER_RFRC_EN 0x01000000
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#define SSI_SIER_TFRC_EN 0x00800000
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#define SSI_SIER_RDMAE 0x00400000
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#define SSI_SIER_RIE 0x00200000
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#define SSI_SIER_TDMAE 0x00100000
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#define SSI_SIER_TIE 0x00080000
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#define SSI_SIER_CMDAU_EN 0x00040000
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#define SSI_SIER_CMDDU_EN 0x00020000
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#define SSI_SIER_RXT_EN 0x00010000
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#define SSI_SIER_RDR1_EN 0x00008000
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#define SSI_SIER_RDR0_EN 0x00004000
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#define SSI_SIER_TDE1_EN 0x00002000
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#define SSI_SIER_TDE0_EN 0x00001000
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#define SSI_SIER_ROE1_EN 0x00000800
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#define SSI_SIER_ROE0_EN 0x00000400
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#define SSI_SIER_TUE1_EN 0x00000200
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#define SSI_SIER_TUE0_EN 0x00000100
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#define SSI_SIER_TFS_EN 0x00000080
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#define SSI_SIER_RFS_EN 0x00000040
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#define SSI_SIER_TLS_EN 0x00000020
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#define SSI_SIER_RLS_EN 0x00000010
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#define SSI_SIER_RFF1_EN 0x00000008
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#define SSI_SIER_RFF0_EN 0x00000004
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#define SSI_SIER_TFE1_EN 0x00000002
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#define SSI_SIER_TFE0_EN 0x00000001
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/* SSI Transmit Configuration Register -- REG_SSI_STCR 0x1C */
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#define SSI_STCR_TXBIT0 0x00000200
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#define SSI_STCR_TFEN1 0x00000100
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#define SSI_STCR_TFEN0 0x00000080
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#define SSI_STCR_TFDIR 0x00000040
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#define SSI_STCR_TXDIR 0x00000020
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#define SSI_STCR_TSHFD 0x00000010
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#define SSI_STCR_TSCKP 0x00000008
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#define SSI_STCR_TFSI 0x00000004
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#define SSI_STCR_TFSL 0x00000002
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#define SSI_STCR_TEFS 0x00000001
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/* SSI Receive Configuration Register -- REG_SSI_SRCR 0x20 */
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#define SSI_SRCR_RXEXT 0x00000400
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#define SSI_SRCR_RXBIT0 0x00000200
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#define SSI_SRCR_RFEN1 0x00000100
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#define SSI_SRCR_RFEN0 0x00000080
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#define SSI_SRCR_RFDIR 0x00000040
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#define SSI_SRCR_RXDIR 0x00000020
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#define SSI_SRCR_RSHFD 0x00000010
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#define SSI_SRCR_RSCKP 0x00000008
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#define SSI_SRCR_RFSI 0x00000004
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#define SSI_SRCR_RFSL 0x00000002
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#define SSI_SRCR_REFS 0x00000001
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/*
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* SSI Transmit Clock Control Register -- REG_SSI_STCCR 0x24
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* SSI Receive Clock Control Register -- REG_SSI_SRCCR 0x28
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*/
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#define SSI_SxCCR_DIV2_SHIFT 18
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#define SSI_SxCCR_DIV2 0x00040000
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#define SSI_SxCCR_PSR_SHIFT 17
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#define SSI_SxCCR_PSR 0x00020000
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#define SSI_SxCCR_WL_SHIFT 13
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#define SSI_SxCCR_WL_MASK 0x0001E000
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#define SSI_SxCCR_WL(x) \
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(((((x) / 2) - 1) << SSI_SxCCR_WL_SHIFT) & SSI_SxCCR_WL_MASK)
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#define SSI_SxCCR_DC_SHIFT 8
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#define SSI_SxCCR_DC_MASK 0x00001F00
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#define SSI_SxCCR_DC(x) \
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((((x) - 1) << SSI_SxCCR_DC_SHIFT) & SSI_SxCCR_DC_MASK)
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#define SSI_SxCCR_PM_SHIFT 0
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#define SSI_SxCCR_PM_MASK 0x000000FF
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#define SSI_SxCCR_PM(x) \
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((((x) - 1) << SSI_SxCCR_PM_SHIFT) & SSI_SxCCR_PM_MASK)
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/*
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* SSI FIFO Control/Status Register -- REG_SSI_SFCSR 0x2c
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*
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* Tx or Rx FIFO Counter -- SSI_SFCSR_xFCNTy Read-Only
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* Tx or Rx FIFO Watermarks -- SSI_SFCSR_xFWMy Read/Write
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*/
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#define SSI_SFCSR_RFCNT1_SHIFT 28
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#define SSI_SFCSR_RFCNT1_MASK 0xF0000000
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#define SSI_SFCSR_RFCNT1(x) \
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(((x) & SSI_SFCSR_RFCNT1_MASK) >> SSI_SFCSR_RFCNT1_SHIFT)
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#define SSI_SFCSR_TFCNT1_SHIFT 24
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#define SSI_SFCSR_TFCNT1_MASK 0x0F000000
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#define SSI_SFCSR_TFCNT1(x) \
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(((x) & SSI_SFCSR_TFCNT1_MASK) >> SSI_SFCSR_TFCNT1_SHIFT)
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#define SSI_SFCSR_RFWM1_SHIFT 20
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#define SSI_SFCSR_RFWM1_MASK 0x00F00000
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#define SSI_SFCSR_RFWM1(x) \
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(((x) << SSI_SFCSR_RFWM1_SHIFT) & SSI_SFCSR_RFWM1_MASK)
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#define SSI_SFCSR_TFWM1_SHIFT 16
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#define SSI_SFCSR_TFWM1_MASK 0x000F0000
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#define SSI_SFCSR_TFWM1(x) \
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(((x) << SSI_SFCSR_TFWM1_SHIFT) & SSI_SFCSR_TFWM1_MASK)
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#define SSI_SFCSR_RFCNT0_SHIFT 12
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#define SSI_SFCSR_RFCNT0_MASK 0x0000F000
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#define SSI_SFCSR_RFCNT0(x) \
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(((x) & SSI_SFCSR_RFCNT0_MASK) >> SSI_SFCSR_RFCNT0_SHIFT)
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#define SSI_SFCSR_TFCNT0_SHIFT 8
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#define SSI_SFCSR_TFCNT0_MASK 0x00000F00
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#define SSI_SFCSR_TFCNT0(x) \
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(((x) & SSI_SFCSR_TFCNT0_MASK) >> SSI_SFCSR_TFCNT0_SHIFT)
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#define SSI_SFCSR_RFWM0_SHIFT 4
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#define SSI_SFCSR_RFWM0_MASK 0x000000F0
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#define SSI_SFCSR_RFWM0(x) \
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(((x) << SSI_SFCSR_RFWM0_SHIFT) & SSI_SFCSR_RFWM0_MASK)
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#define SSI_SFCSR_TFWM0_SHIFT 0
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#define SSI_SFCSR_TFWM0_MASK 0x0000000F
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#define SSI_SFCSR_TFWM0(x) \
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(((x) << SSI_SFCSR_TFWM0_SHIFT) & SSI_SFCSR_TFWM0_MASK)
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/* SSI Test Register -- REG_SSI_STR 0x30 */
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#define SSI_STR_TEST 0x00008000
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#define SSI_STR_RCK2TCK 0x00004000
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#define SSI_STR_RFS2TFS 0x00002000
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#define SSI_STR_RXSTATE(x) (((x) >> 8) & 0x1F)
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#define SSI_STR_TXD2RXD 0x00000080
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#define SSI_STR_TCK2RCK 0x00000040
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#define SSI_STR_TFS2RFS 0x00000020
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#define SSI_STR_TXSTATE(x) ((x) & 0x1F)
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/* SSI Option Register -- REG_SSI_SOR 0x34 */
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#define SSI_SOR_CLKOFF 0x00000040
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#define SSI_SOR_RX_CLR 0x00000020
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#define SSI_SOR_TX_CLR 0x00000010
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#define SSI_SOR_xX_CLR(tx) ((tx) ? SSI_SOR_TX_CLR : SSI_SOR_RX_CLR)
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#define SSI_SOR_INIT 0x00000008
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#define SSI_SOR_WAIT_SHIFT 1
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#define SSI_SOR_WAIT_MASK 0x00000006
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#define SSI_SOR_WAIT(x) (((x) & 3) << SSI_SOR_WAIT_SHIFT)
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#define SSI_SOR_SYNRST 0x00000001
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/* SSI AC97 Control Register -- REG_SSI_SACNT 0x38 */
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#define SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5)
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#define SSI_SACNT_WR 0x00000010
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#define SSI_SACNT_RD 0x00000008
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#define SSI_SACNT_RDWR_MASK 0x00000018
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#define SSI_SACNT_TIF 0x00000004
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#define SSI_SACNT_FV 0x00000002
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#define SSI_SACNT_AC97EN 0x00000001
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struct device;
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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struct fsl_ssi_dbg {
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struct dentry *dbg_dir;
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struct {
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unsigned int rfrc;
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unsigned int tfrc;
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unsigned int cmdau;
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unsigned int cmddu;
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unsigned int rxt;
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unsigned int rdr1;
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unsigned int rdr0;
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unsigned int tde1;
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unsigned int tde0;
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unsigned int roe1;
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unsigned int roe0;
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unsigned int tue1;
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unsigned int tue0;
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unsigned int tfs;
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unsigned int rfs;
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unsigned int tls;
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unsigned int rls;
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unsigned int rff1;
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unsigned int rff0;
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unsigned int tfe1;
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unsigned int tfe0;
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} stats;
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};
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void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *ssi_dbg, u32 sisr);
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void fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev);
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void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg);
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#else
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struct fsl_ssi_dbg {
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};
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static inline void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *stats, u32 sisr)
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{
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}
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static inline void fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg,
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struct device *dev)
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{
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}
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static inline void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg)
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{
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}
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#endif /* ! IS_ENABLED(CONFIG_DEBUG_FS) */
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#endif
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