1 files changed, 462 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
new file mode 100644
index 000000000000..4f22e5bb7ff7
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -0,0 +1,462 @@
+/*
+ * arch/arm/plat-omap/include/mach/mcbsp.h
+ *
+ * Defines for Multi-Channel Buffered Serial Port
+ *
+ * Copyright (C) 2002 RidgeRun, Inc.
+ * Author: Steve Johnson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef __ASM_ARCH_OMAP_MCBSP_H
+#define __ASM_ARCH_OMAP_MCBSP_H
+
+#include <linux/completion.h>
+#include <linux/spinlock.h>
+
+#include <mach/hardware.h>
+#include <plat/clock.h>
+
+#define OMAP7XX_MCBSP1_BASE     0xfffb1000
+#define OMAP7XX_MCBSP2_BASE     0xfffb1800
+
+#define OMAP1510_MCBSP1_BASE    0xe1011800
+#define OMAP1510_MCBSP2_BASE    0xfffb1000
+#define OMAP1510_MCBSP3_BASE    0xe1017000
+
+#define OMAP1610_MCBSP1_BASE    0xe1011800
+#define OMAP1610_MCBSP2_BASE    0xfffb1000
+#define OMAP1610_MCBSP3_BASE    0xe1017000
+
+#define OMAP24XX_MCBSP1_BASE    0x48074000
+#define OMAP24XX_MCBSP2_BASE    0x48076000
+#define OMAP2430_MCBSP3_BASE    0x4808c000
+#define OMAP2430_MCBSP4_BASE    0x4808e000
+#define OMAP2430_MCBSP5_BASE    0x48096000
+
+#define OMAP34XX_MCBSP1_BASE    0x48074000
+#define OMAP34XX_MCBSP2_BASE    0x49022000
+#define OMAP34XX_MCBSP3_BASE    0x49024000
+#define OMAP34XX_MCBSP4_BASE    0x49026000
+#define OMAP34XX_MCBSP5_BASE    0x48096000
+
+#define OMAP44XX_MCBSP1_BASE    0x49022000
+#define OMAP44XX_MCBSP2_BASE    0x49024000
+#define OMAP44XX_MCBSP3_BASE    0x49026000
+#define OMAP44XX_MCBSP4_BASE    0x48074000
+
+#if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
+
+#define OMAP_MCBSP_REG_DRR2     0x00
+#define OMAP_MCBSP_REG_DRR1     0x02
+#define OMAP_MCBSP_REG_DXR2     0x04
+#define OMAP_MCBSP_REG_DXR1     0x06
+#define OMAP_MCBSP_REG_SPCR2    0x08
+#define OMAP_MCBSP_REG_SPCR1    0x0a
+#define OMAP_MCBSP_REG_RCR2     0x0c
+#define OMAP_MCBSP_REG_RCR1     0x0e
+#define OMAP_MCBSP_REG_XCR2     0x10
+#define OMAP_MCBSP_REG_XCR1     0x12
+#define OMAP_MCBSP_REG_SRGR2    0x14
+#define OMAP_MCBSP_REG_SRGR1    0x16
+#define OMAP_MCBSP_REG_MCR2     0x18
+#define OMAP_MCBSP_REG_MCR1     0x1a
+#define OMAP_MCBSP_REG_RCERA    0x1c
+#define OMAP_MCBSP_REG_RCERB    0x1e
+#define OMAP_MCBSP_REG_XCERA    0x20
+#define OMAP_MCBSP_REG_XCERB    0x22
+#define OMAP_MCBSP_REG_PCR0     0x24
+#define OMAP_MCBSP_REG_RCERC    0x26
+#define OMAP_MCBSP_REG_RCERD    0x28
+#define OMAP_MCBSP_REG_XCERC    0x2A
+#define OMAP_MCBSP_REG_XCERD    0x2C
+#define OMAP_MCBSP_REG_RCERE    0x2E
+#define OMAP_MCBSP_REG_RCERF    0x30
+#define OMAP_MCBSP_REG_XCERE    0x32
+#define OMAP_MCBSP_REG_XCERF    0x34
+#define OMAP_MCBSP_REG_RCERG    0x36
+#define OMAP_MCBSP_REG_RCERH    0x38
+#define OMAP_MCBSP_REG_XCERG    0x3A
+#define OMAP_MCBSP_REG_XCERH    0x3C
+
+/* Dummy defines, these are not available on omap1 */
+#define OMAP_MCBSP_REG_XCCR     0x00
+#define OMAP_MCBSP_REG_RCCR     0x00
+
+#define AUDIO_MCBSP_DATAWRITE   (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1)
+#define AUDIO_MCBSP_DATAREAD    (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1)
+
+#define AUDIO_MCBSP             OMAP_MCBSP1
+#define AUDIO_DMA_TX            OMAP_DMA_MCBSP1_TX
+#define AUDIO_DMA_RX            OMAP_DMA_MCBSP1_RX
+
+#elif defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+        defined(CONFIG_ARCH_OMAP4)
+
+#define OMAP_MCBSP_REG_DRR2     0x00
+#define OMAP_MCBSP_REG_DRR1     0x04
+#define OMAP_MCBSP_REG_DXR2     0x08
+#define OMAP_MCBSP_REG_DXR1     0x0C
+#define OMAP_MCBSP_REG_DRR      0x00
+#define OMAP_MCBSP_REG_DXR      0x08
+#define OMAP_MCBSP_REG_SPCR2    0x10
+#define OMAP_MCBSP_REG_SPCR1    0x14
+#define OMAP_MCBSP_REG_RCR2     0x18
+#define OMAP_MCBSP_REG_RCR1     0x1C
+#define OMAP_MCBSP_REG_XCR2     0x20
+#define OMAP_MCBSP_REG_XCR1     0x24
+#define OMAP_MCBSP_REG_SRGR2    0x28
+#define OMAP_MCBSP_REG_SRGR1    0x2C
+#define OMAP_MCBSP_REG_MCR2     0x30
+#define OMAP_MCBSP_REG_MCR1     0x34
+#define OMAP_MCBSP_REG_RCERA    0x38
+#define OMAP_MCBSP_REG_RCERB    0x3C
+#define OMAP_MCBSP_REG_XCERA    0x40
+#define OMAP_MCBSP_REG_XCERB    0x44
+#define OMAP_MCBSP_REG_PCR0     0x48
+#define OMAP_MCBSP_REG_RCERC    0x4C
+#define OMAP_MCBSP_REG_RCERD    0x50
+#define OMAP_MCBSP_REG_XCERC    0x54
+#define OMAP_MCBSP_REG_XCERD    0x58
+#define OMAP_MCBSP_REG_RCERE    0x5C
+#define OMAP_MCBSP_REG_RCERF    0x60
+#define OMAP_MCBSP_REG_XCERE    0x64
+#define OMAP_MCBSP_REG_XCERF    0x68
+#define OMAP_MCBSP_REG_RCERG    0x6C
+#define OMAP_MCBSP_REG_RCERH    0x70
+#define OMAP_MCBSP_REG_XCERG    0x74
+#define OMAP_MCBSP_REG_XCERH    0x78
+#define OMAP_MCBSP_REG_SYSCON   0x8C
+#define OMAP_MCBSP_REG_THRSH2   0x90
+#define OMAP_MCBSP_REG_THRSH1   0x94
+#define OMAP_MCBSP_REG_IRQST    0xA0
+#define OMAP_MCBSP_REG_IRQEN    0xA4
+#define OMAP_MCBSP_REG_WAKEUPEN 0xA8
+#define OMAP_MCBSP_REG_XCCR     0xAC
+#define OMAP_MCBSP_REG_RCCR     0xB0
+
+#define AUDIO_MCBSP_DATAWRITE   (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1)
+#define AUDIO_MCBSP_DATAREAD    (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1)
+
+#define AUDIO_MCBSP             OMAP_MCBSP2
+#define AUDIO_DMA_TX            OMAP24XX_DMA_MCBSP2_TX
+#define AUDIO_DMA_RX            OMAP24XX_DMA_MCBSP2_RX
+
+#endif
+
+/************************** McBSP SPCR1 bit definitions ***********************/
+#define RRST                    0x0001
+#define RRDY                    0x0002
+#define RFULL                   0x0004
+#define RSYNC_ERR               0x0008
+#define RINTM(value)            ((value)<<4)    /* bits 4:5 */
+#define ABIS                    0x0040
+#define DXENA                   0x0080
+#define CLKSTP(value)           ((value)<<11)   /* bits 11:12 */
+#define RJUST(value)            ((value)<<13)   /* bits 13:14 */
+#define ALB                     0x8000
+#define DLB                     0x8000
+
+/************************** McBSP SPCR2 bit definitions ***********************/
+#define XRST            0x0001
+#define XRDY            0x0002
+#define XEMPTY          0x0004
+#define XSYNC_ERR       0x0008
+#define XINTM(value)    ((value)<<4)            /* bits 4:5 */
+#define GRST            0x0040
+#define FRST            0x0080
+#define SOFT            0x0100
+#define FREE            0x0200
+
+/************************** McBSP PCR bit definitions *************************/
+#define CLKRP           0x0001
+#define CLKXP           0x0002
+#define FSRP            0x0004
+#define FSXP            0x0008
+#define DR_STAT         0x0010
+#define DX_STAT         0x0020
+#define CLKS_STAT       0x0040
+#define SCLKME          0x0080
+#define CLKRM           0x0100
+#define CLKXM           0x0200
+#define FSRM            0x0400
+#define FSXM            0x0800
+#define RIOEN           0x1000
+#define XIOEN           0x2000
+#define IDLE_EN         0x4000
+
+/************************** McBSP RCR1 bit definitions ************************/
+#define RWDLEN1(value)          ((value)<<5)    /* Bits 5:7 */
+#define RFRLEN1(value)          ((value)<<8)    /* Bits 8:14 */
+
+/************************** McBSP XCR1 bit definitions ************************/
+#define XWDLEN1(value)          ((value)<<5)    /* Bits 5:7 */
+#define XFRLEN1(value)          ((value)<<8)    /* Bits 8:14 */
+
+/*************************** McBSP RCR2 bit definitions ***********************/
+#define RDATDLY(value)          (value)         /* Bits 0:1 */
+#define RFIG                    0x0004
+#define RCOMPAND(value)         ((value)<<3)    /* Bits 3:4 */
+#define RWDLEN2(value)          ((value)<<5)    /* Bits 5:7 */
+#define RFRLEN2(value)          ((value)<<8)    /* Bits 8:14 */
+#define RPHASE                  0x8000
+
+/*************************** McBSP XCR2 bit definitions ***********************/
+#define XDATDLY(value)          (value)         /* Bits 0:1 */
+#define XFIG                    0x0004
+#define XCOMPAND(value)         ((value)<<3)    /* Bits 3:4 */
+#define XWDLEN2(value)          ((value)<<5)    /* Bits 5:7 */
+#define XFRLEN2(value)          ((value)<<8)    /* Bits 8:14 */
+#define XPHASE                  0x8000
+
+/************************* McBSP SRGR1 bit definitions ************************/
+#define CLKGDV(value)           (value)         /* Bits 0:7 */
+#define FWID(value)             ((value)<<8)    /* Bits 8:15 */
+
+/************************* McBSP SRGR2 bit definitions ************************/
+#define FPER(value)             (value)         /* Bits 0:11 */
+#define FSGM                    0x1000
+#define CLKSM                   0x2000
+#define CLKSP                   0x4000
+#define GSYNC                   0x8000
+
+/************************* McBSP MCR1 bit definitions *************************/
+#define RMCM                    0x0001
+#define RCBLK(value)            ((value)<<2)    /* Bits 2:4 */
+#define RPABLK(value)           ((value)<<5)    /* Bits 5:6 */
+#define RPBBLK(value)           ((value)<<7)    /* Bits 7:8 */
+
+/************************* McBSP MCR2 bit definitions *************************/
+#define XMCM(value)             (value)         /* Bits 0:1 */
+#define XCBLK(value)            ((value)<<2)    /* Bits 2:4 */
+#define XPABLK(value)           ((value)<<5)    /* Bits 5:6 */
+#define XPBBLK(value)           ((value)<<7)    /* Bits 7:8 */
+
+/*********************** McBSP XCCR bit definitions *************************/
+#define EXTCLKGATE              0x8000
+#define PPCONNECT               0x4000
+#define DXENDLY(value)          ((value)<<12)   /* Bits 12:13 */
+#define XFULL_CYCLE             0x0800
+#define DILB                    0x0020
+#define XDMAEN                  0x0008
+#define XDISABLE                0x0001
+
+/********************** McBSP RCCR bit definitions *************************/
+#define RFULL_CYCLE             0x0800
+#define RDMAEN                  0x0008
+#define RDISABLE                0x0001
+
+/********************** McBSP SYSCONFIG bit definitions ********************/
+#define CLOCKACTIVITY(value)    ((value)<<8)
+#define SIDLEMODE(value)        ((value)<<3)
+#define ENAWAKEUP               0x0004
+#define SOFTRST                 0x0002
+
+/********************** McBSP DMA operating modes **************************/
+#define MCBSP_DMA_MODE_ELEMENT          0
+#define MCBSP_DMA_MODE_THRESHOLD        1
+#define MCBSP_DMA_MODE_FRAME            2
+
+/********************** McBSP WAKEUPEN bit definitions *********************/
+#define XEMPTYEOFEN             0x4000
+#define XRDYEN                  0x0400
+#define XEOFEN                  0x0200
+#define XFSXEN                  0x0100
+#define XSYNCERREN              0x0080
+#define RRDYEN                  0x0008
+#define REOFEN                  0x0004
+#define RFSREN                  0x0002
+#define RSYNCERREN              0x0001
+
+/* we don't do multichannel for now */
+struct omap_mcbsp_reg_cfg {
+        u16 spcr2;
+        u16 spcr1;
+        u16 rcr2;
+        u16 rcr1;
+        u16 xcr2;
+        u16 xcr1;
+        u16 srgr2;
+        u16 srgr1;
+        u16 mcr2;
+        u16 mcr1;
+        u16 pcr0;
+        u16 rcerc;
+        u16 rcerd;
+        u16 xcerc;
+        u16 xcerd;
+        u16 rcere;
+        u16 rcerf;
+        u16 xcere;
+        u16 xcerf;
+        u16 rcerg;
+        u16 rcerh;
+        u16 xcerg;
+        u16 xcerh;
+        u16 xccr;
+        u16 rccr;
+};
+
+typedef enum {
+        OMAP_MCBSP1 = 0,
+        OMAP_MCBSP2,
+        OMAP_MCBSP3,
+        OMAP_MCBSP4,
+        OMAP_MCBSP5
+} omap_mcbsp_id;
+
+typedef int __bitwise omap_mcbsp_io_type_t;
+#define OMAP_MCBSP_IRQ_IO ((__force omap_mcbsp_io_type_t) 1)
+#define OMAP_MCBSP_POLL_IO ((__force omap_mcbsp_io_type_t) 2)
+
+typedef enum {
+        OMAP_MCBSP_WORD_8 = 0,
+        OMAP_MCBSP_WORD_12,
+        OMAP_MCBSP_WORD_16,
+        OMAP_MCBSP_WORD_20,
+        OMAP_MCBSP_WORD_24,
+        OMAP_MCBSP_WORD_32,
+} omap_mcbsp_word_length;
+
+typedef enum {
+        OMAP_MCBSP_CLK_RISING = 0,
+        OMAP_MCBSP_CLK_FALLING,
+} omap_mcbsp_clk_polarity;
+
+typedef enum {
+        OMAP_MCBSP_FS_ACTIVE_HIGH = 0,
+        OMAP_MCBSP_FS_ACTIVE_LOW,
+} omap_mcbsp_fs_polarity;
+
+typedef enum {
+        OMAP_MCBSP_CLK_STP_MODE_NO_DELAY = 0,
+        OMAP_MCBSP_CLK_STP_MODE_DELAY,
+} omap_mcbsp_clk_stp_mode;
+
+
+/******* SPI specific mode **********/
+typedef enum {
+        OMAP_MCBSP_SPI_MASTER = 0,
+        OMAP_MCBSP_SPI_SLAVE,
+} omap_mcbsp_spi_mode;
+
+struct omap_mcbsp_spi_cfg {
+        omap_mcbsp_spi_mode             spi_mode;
+        omap_mcbsp_clk_polarity         rx_clock_polarity;
+        omap_mcbsp_clk_polarity         tx_clock_polarity;
+        omap_mcbsp_fs_polarity          fsx_polarity;
+        u8                              clk_div;
+        omap_mcbsp_clk_stp_mode         clk_stp_mode;
+        omap_mcbsp_word_length          word_length;
+};
+
+/* Platform specific configuration */
+struct omap_mcbsp_ops {
+        void (*request)(unsigned int);
+        void (*free)(unsigned int);
+};
+
+struct omap_mcbsp_platform_data {
+        unsigned long phys_base;
+        u8 dma_rx_sync, dma_tx_sync;
+        u16 rx_irq, tx_irq;
+        struct omap_mcbsp_ops *ops;
+#ifdef CONFIG_ARCH_OMAP34XX
+        u16 buffer_size;
+#endif
+};
+
+struct omap_mcbsp {
+        struct device *dev;
+        unsigned long phys_base;
+        void __iomem *io_base;
+        u8 id;
+        u8 free;
+        omap_mcbsp_word_length rx_word_length;
+        omap_mcbsp_word_length tx_word_length;
+
+        omap_mcbsp_io_type_t io_type; /* IRQ or poll */
+        /* IRQ based TX/RX */
+        int rx_irq;
+        int tx_irq;
+
+        /* DMA stuff */
+        u8 dma_rx_sync;
+        short dma_rx_lch;
+        u8 dma_tx_sync;
+        short dma_tx_lch;
+
+        /* Completion queues */
+        struct completion tx_irq_completion;
+        struct completion rx_irq_completion;
+        struct completion tx_dma_completion;
+        struct completion rx_dma_completion;
+
+        /* Protect the field .free, while checking if the mcbsp is in use */
+        spinlock_t lock;
+        struct omap_mcbsp_platform_data *pdata;
+        struct clk *iclk;
+        struct clk *fclk;
+#ifdef CONFIG_ARCH_OMAP34XX
+        int dma_op_mode;
+        u16 max_tx_thres;
+        u16 max_rx_thres;
+#endif
+};
+extern struct omap_mcbsp **mcbsp_ptr;
+extern int omap_mcbsp_count;
+
+int omap_mcbsp_init(void);
+void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
+                                        int size);
+void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
+#ifdef CONFIG_ARCH_OMAP34XX
+void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold);
+void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold);
+u16 omap_mcbsp_get_max_tx_threshold(unsigned int id);
+u16 omap_mcbsp_get_max_rx_threshold(unsigned int id);
+int omap_mcbsp_get_dma_op_mode(unsigned int id);
+#else
+static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold)
+{ }
+static inline void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold)
+{ }
+static inline u16 omap_mcbsp_get_max_tx_threshold(unsigned int id) { return 0; }
+static inline u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) { return 0; }
+static inline int omap_mcbsp_get_dma_op_mode(unsigned int id) { return 0; }
+#endif
+int omap_mcbsp_request(unsigned int id);
+void omap_mcbsp_free(unsigned int id);
+void omap_mcbsp_start(unsigned int id, int tx, int rx);
+void omap_mcbsp_stop(unsigned int id, int tx, int rx);
+void omap_mcbsp_xmit_word(unsigned int id, u32 word);
+u32 omap_mcbsp_recv_word(unsigned int id);
+
+int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
+int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer, unsigned int length);
+int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word);
+int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 * word);
+
+
+/* SPI specific API */
+void omap_mcbsp_set_spi_mode(unsigned int id, const struct omap_mcbsp_spi_cfg * spi_cfg);
+
+/* Polled read/write functions */
+int omap_mcbsp_pollread(unsigned int id, u16 * buf);
+int omap_mcbsp_pollwrite(unsigned int id, u16 buf);
+int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type);
+
+#endif