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 __devexit omap_mcpdm_remove(struct platform_device *pdev); 154