altos: Start work on LPC I2C driver

[fw/altos] / src / lpc / lpc.h

diff --git a/src/lpc/lpc.h b/src/lpc/lpc.h
index be0dc021d7a7cf6e12629349b8398d0543161ef4..218720e2f1e4f12070a3c41dbf49d725957bc276 100644 (file)
--- a/src/lpc/lpc.h
+++ b/src/lpc/lpc.h
@@ -640,6 +640,62 @@ extern struct lpc_scb lpc_scb;
 #define LPC_SCB_PDRUNCFG_USBPLL_PD     8
 #define LPC_SCB_PDRUNCFG_USBPAD_PD     10
 
+struct lpc_i2c {
+       vuint32_t       conset;
+       vuint32_t       stat;
+       vuint32_t       dat;
+       vuint32_t       adr0;
+
+       vuint32_t       sclh;
+       vuint32_t       scll;
+       vuint32_t       conclr;
+       vuint32_t       mmctrl;
+
+       vuint32_t       adr[3];
+       vuint32_t       data_buffer;
+
+       vuint32_t       mask[4];
+};
+
+extern struct lpc_i2c lpc_i2c;
+
+#define lpc_i2c (*(struct lpc_i2c *) 0x40000000)
+
+#define LPC_I2C_CONSET_AA      2
+#define LPC_I2C_CONSET_SI      3
+#define LPC_I2C_CONSET_STO     4
+#define LPC_I2C_CONSET_STA     5
+#define LPC_I2C_CONSET_I2EN    6
+
+/* master status values */
+#define LPC_I2C_STAT_ERROR             0x00
+#define LPC_I2C_STAT_START             0x08
+#define LPC_I2C_STAT_REPEAT_START      0x10
+#define LPC_I2C_STAT_TX_START_ACK      0x18
+#define LPC_I2C_STAT_TX_START_NACK     0x20
+#define LPC_I2C_STAT_TX_ACK            0x28
+#define LPC_I2C_STAT_TX_NACK           0x30
+#define LPC_I2C_STAT_TX_ARB_LOST       0x38
+#define LPC_I2C_STAT_RX_START_ACK      0x40
+#define LPC_I2C_STAT_RX_START_NACK     0x48
+#define LPC_I2C_STAT_RX_ACK            0x50
+#define LPC_I2C_STAT_RX_NACK           0x58
+
+
+#define LPC_I2C_ADR_GC         0
+#define LPC_I2C_ADR_ADDRESS    1
+
+#define LPC_I2C_CONCLR_AAC     2
+#define LPC_I2C_CONCLR_SIC     3
+#define LPC_I2C_CONCLR_STAC    5
+#define LPC_I2C_CONCLR_I2ENC   6
+
+#define LPC_I2C_MMCTRL_MM_ENA  0
+#define LPC_I2C_MMCTRL_ENA_SCL 1
+#define LPC_I2C_MMCTRL_MATCH_ALL       2
+
+#define LPC_I2C_MASK_MASK      1
+
 struct lpc_flash {
        uint32_t        r0[4];          /* 0x0 */