- Definitions were added
SLAVE related definitions were added to the core of the controller.
Signed-off-by: Luis Oliveira <lolivei@xxxxxxxxxxxx>
---
Changes V4->V5: (Andy Shevchenko)
- This patch just introduces SLAVE definitions (as suggested in V4)
drivers/i2c/busses/i2c-designware-core.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index 8bba7a37c3ce..5080f1d2d2ec 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -36,15 +36,20 @@
#define DW_IC_CON_SPEED_FAST 0x4
#define DW_IC_CON_SPEED_HIGH 0x6
#define DW_IC_CON_SPEED_MASK 0x6
+#define DW_IC_CON_10BITADDR_SLAVE 0x8
#define DW_IC_CON_10BITADDR_MASTER 0x10
#define DW_IC_CON_RESTART_EN 0x20
#define DW_IC_CON_SLAVE_DISABLE 0x40
+#define DW_IC_CON_STOP_DET_IFADDRESSED 0x80
+#define DW_IC_CON_TX_EMPTY_CTRL 0x100
+#define DW_IC_CON_RX_FIFO_FULL_HLD_CTRL 0x200
/*
* Registers offset
*/
#define DW_IC_CON 0x0
#define DW_IC_TAR 0x4
+#define DW_IC_SAR 0x8
#define DW_IC_DATA_CMD 0x10
#define DW_IC_SS_SCL_HCNT 0x14
#define DW_IC_SS_SCL_LCNT 0x18
@@ -75,6 +80,7 @@
#define DW_IC_SDA_HOLD 0x7c
#define DW_IC_TX_ABRT_SOURCE 0x80
#define DW_IC_ENABLE_STATUS 0x9c
+#define DW_IC_CLR_RESTART_DET 0xa8
#define DW_IC_COMP_PARAM_1 0xf4
#define DW_IC_COMP_VERSION 0xf8
#define DW_IC_SDA_HOLD_MIN_VERS 0x3131312A
@@ -93,15 +99,22 @@
#define DW_IC_INTR_STOP_DET 0x200
#define DW_IC_INTR_START_DET 0x400
#define DW_IC_INTR_GEN_CALL 0x800
+#define DW_IC_INTR_RESTART_DET 0x1000
#define DW_IC_INTR_DEFAULT_MASK (DW_IC_INTR_RX_FULL | \
DW_IC_INTR_TX_ABRT | \
DW_IC_INTR_STOP_DET)
#define DW_IC_INTR_MASTER_MASK (DW_IC_INTR_DEFAULT_MASK | \
DW_IC_INTR_TX_EMPTY)
+#define DW_IC_INTR_SLAVE_MASK (DW_IC_INTR_DEFAULT_MASK | \
+ DW_IC_INTR_RX_DONE | \
+ DW_IC_INTR_RX_UNDER | \
+ DW_IC_INTR_RD_REQ)
+
#define DW_IC_STATUS_ACTIVITY 0x1
#define DW_IC_STATUS_TFE BIT(2)
#define DW_IC_STATUS_MASTER_ACTIVITY BIT(5)
+#define DW_IC_STATUS_SLAVE_ACTIVITY BIT(6)
#define DW_IC_SDA_HOLD_RX_SHIFT 16
#define DW_IC_SDA_HOLD_RX_MASK GENMASK(23, DW_IC_SDA_HOLD_RX_SHIFT)
@@ -123,6 +136,12 @@
#define TIMEOUT 20 /* ms */
/*
+ * operation modes
+ */
+#define DW_IC_MASTER 0
+#define DW_IC_SLAVE 1
+
+/*
* hardware abort codes from the DW_IC_TX_ABRT_SOURCE register
*
* only expected abort codes are listed here
@@ -139,6 +158,9 @@
#define ABRT_10B_RD_NORSTRT 10
#define ABRT_MASTER_DIS 11
#define ARB_LOST 12
+#define ABRT_SLAVE_FLUSH_TXFIFO 13
+#define ABRT_SLAVE_ARBLOST 14
+#define ABRT_SLAVE_RD_INTX 15
#define DW_IC_TX_ABRT_7B_ADDR_NOACK (1UL << ABRT_7B_ADDR_NOACK)
#define DW_IC_TX_ABRT_10ADDR1_NOACK (1UL << ABRT_10ADDR1_NOACK)
@@ -151,6 +173,9 @@
#define DW_IC_TX_ABRT_10B_RD_NORSTRT (1UL << ABRT_10B_RD_NORSTRT)
#define DW_IC_TX_ABRT_MASTER_DIS (1UL << ABRT_MASTER_DIS)
#define DW_IC_TX_ARB_LOST (1UL << ARB_LOST)
+#define DW_IC_RX_ABRT_SLAVE_RD_INTX (1UL << ABRT_SLAVE_RD_INTX)
+#define DW_IC_RX_ABRT_SLAVE_ARBLOST (1UL << ABRT_SLAVE_ARBLOST)
+#define DW_IC_RX_ABRT_SLAVE_FLUSH_TXFIFO (1UL << ABRT_SLAVE_FLUSH_TXFIFO)
#define DW_IC_TX_ABRT_NOACK (DW_IC_TX_ABRT_7B_ADDR_NOACK | \
DW_IC_TX_ABRT_10ADDR1_NOACK | \
@@ -206,6 +231,7 @@ struct dw_i2c_dev {
void __iomem *base;
struct completion cmd_complete;
struct clk *clk;
+ struct i2c_client *slave;
u32 (*get_clk_rate_khz) (struct dw_i2c_dev *dev);
struct dw_pci_controller *controller;
int cmd_err;
@@ -225,6 +251,7 @@ struct dw_i2c_dev {
struct i2c_adapter adapter;
u32 functionality;
u32 master_cfg;
+ u32 slave_cfg;
unsigned int tx_fifo_depth;
unsigned int rx_fifo_depth;
int rx_outstanding;
--
2.11.0
--
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