sound/soc/omap/mcpdm.h

   1 /*
   2  * mcpdm.h -- Defines for McPDM driver
   3  *
   4  * Author: Jorge Eduardo Candelaria <x0107209@ti.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 /* McPDM registers */
  23
  24 #define MCPDM_REVISION         0x00
  25 #define MCPDM_SYSCONFIG                0x10
  26 #define MCPDM_IRQSTATUS_RAW    0x24
  27 #define MCPDM_IRQSTATUS                0x28
  28 #define MCPDM_IRQENABLE_SET    0x2C
  29 #define MCPDM_IRQENABLE_CLR    0x30
  30 #define MCPDM_IRQWAKE_EN       0x34
  31 #define MCPDM_DMAENABLE_SET    0x38
  32 #define MCPDM_DMAENABLE_CLR    0x3C
  33 #define MCPDM_DMAWAKEEN                0x40
  34 #define MCPDM_CTRL             0x44
  35 #define MCPDM_DN_DATA          0x48
  36 #define MCPDM_UP_DATA          0x4C
  37 #define MCPDM_FIFO_CTRL_DN     0x50
  38 #define MCPDM_FIFO_CTRL_UP     0x54
  39 #define MCPDM_DN_OFFSET                0x58
  40
  41 /*
  42  * MCPDM_IRQ bit fields
  43  * IRQSTATUS_RAW, IRQSTATUS, IRQENABLE_SET, IRQENABLE_CLR
  44  */
  45
  46 #define MCPDM_DN_IRQ                   (1 << 0)
  47 #define MCPDM_DN_IRQ_EMPTY             (1 << 1)
  48 #define MCPDM_DN_IRQ_ALMST_EMPTY       (1 << 2)
  49 #define MCPDM_DN_IRQ_FULL              (1 << 3)
  50
  51 #define MCPDM_UP_IRQ                   (1 << 8)
  52 #define MCPDM_UP_IRQ_EMPTY             (1 << 9)
  53 #define MCPDM_UP_IRQ_ALMST_FULL                (1 << 10)
  54 #define MCPDM_UP_IRQ_FULL              (1 << 11)
  55
  56 #define MCPDM_DOWNLINK_IRQ_MASK                0x00F
  57 #define MCPDM_UPLINK_IRQ_MASK          0xF00
  58
  59 /*
  60  * MCPDM_DMAENABLE bit fields
  61  */
  62
  63 #define DMA_DN_ENABLE          0x1
  64 #define DMA_UP_ENABLE          0x2
  65
  66 /*
  67  * MCPDM_CTRL bit fields
  68  */
  69
  70 #define PDM_UP1_EN             0x0001
  71 #define PDM_UP2_EN             0x0002
  72 #define PDM_UP3_EN             0x0004
  73 #define PDM_DN1_EN             0x0008
  74 #define PDM_DN2_EN             0x0010
  75 #define PDM_DN3_EN             0x0020
  76 #define PDM_DN4_EN             0x0040
  77 #define PDM_DN5_EN             0x0080
  78 #define PDMOUTFORMAT           0x0100
  79 #define CMD_INT                        0x0200
  80 #define STATUS_INT             0x0400
  81 #define SW_UP_RST              0x0800
  82 #define SW_DN_RST              0x1000
  83 #define PDM_UP_MASK            0x007
  84 #define PDM_DN_MASK            0x0F8
  85 #define PDM_CMD_MASK           0x200
  86 #define PDM_STATUS_MASK                0x400
  87
  88
  89 #define PDMOUTFORMAT_LJUST     (0 << 8)
  90 #define PDMOUTFORMAT_RJUST     (1 << 8)
  91
  92 /*
  93  * MCPDM_FIFO_CTRL bit fields
  94  */
  95
  96 #define UP_THRES_MAX           0xF
  97 #define DN_THRES_MAX           0xF
  98
  99 /*
 100  * MCPDM_DN_OFFSET bit fields
 101  */
 102
 103 #define DN_OFST_RX1_EN         0x0001
 104 #define DN_OFST_RX2_EN         0x0100
 105
 106 #define DN_OFST_RX1            1
 107 #define DN_OFST_RX2            9
 108 #define DN_OFST_MAX            0x1F
 109
 110 #define MCPDM_UPLINK           1
 111 #define MCPDM_DOWNLINK         2
 112
 113 struct omap_mcpdm_link {
 114        int irq_mask;
 115        int threshold;
 116        int format;
 117        int channels;
 118 };
 119
 120 struct omap_mcpdm_platform_data {
 121        unsigned long phys_base;
 122        u16 irq;
 123 };
 124
 125 struct omap_mcpdm {
 126        struct device *dev;
 127        unsigned long phys_base;
 128        void __iomem *io_base;
 129        u8 free;
 130        int irq;
 131
 132        spinlock_t lock;
 133        struct omap_mcpdm_platform_data *pdata;
 134        struct clk *clk;
 135        struct omap_mcpdm_link *downlink;
 136        struct omap_mcpdm_link *uplink;
 137        struct completion irq_completion;
 138
 139        int dn_channels;
 140        int up_channels;
 141 };
 142
 143 extern void omap_mcpdm_start(int stream);
 144 extern void omap_mcpdm_stop(int stream);
 145 extern int omap_mcpdm_capture_open(struct omap_mcpdm_link *uplink);
 146 extern int omap_mcpdm_playback_open(struct omap_mcpdm_link *downlink);
 147 extern int omap_mcpdm_capture_close(struct omap_mcpdm_link *uplink);
 148 extern int omap_mcpdm_playback_close(struct omap_mcpdm_link *downlink);
 149 extern int omap_mcpdm_request(void);
 150 extern void omap_mcpdm_free(void);
 151 extern int omap_mcpdm_set_offset(int offset1, int offset2);
 152 int __devinit omap_mcpdm_probe(struct platform_device *pdev);
 153 int omap_mcpdm_remove(struct platform_device *pdev);