driver: brcm: add i2c driver
Broadcom I2C controller driver. Follwoing API's are supported:-
- i2c_init() Intialize ethe I2C controller
- i2c_probe()
- i2c_set_bus_speed() Set the I2C bus speed
- i2c_get_bus_speed() Get the current bus speed
- i2c_recv_byte() Receive one byte of data.
- i2c_send_byte() Send one byteof data
- i2c_read_byte() Read single byte of data
- i2c_read() Read multiple bytes of data
- i2c_write_byte Write single byte of data
- i2c_write() Write multiple bytes of data
This driver is verified by reading the DDR SPD data.
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
Change-Id: I2d7fe53950e8b12fab19d0293020523ff8b74e13
diff --git a/include/drivers/brcm/i2c/i2c_regs.h b/include/drivers/brcm/i2c/i2c_regs.h
new file mode 100644
index 0000000..74ea824
--- /dev/null
+++ b/include/drivers/brcm/i2c/i2c_regs.h
@@ -0,0 +1,271 @@
+/*
+ * Copyright (c) 2016 - 2021, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef I2C_REGS
+#define I2C_REGS
+
+/* SMBUS Config register */
+#define SMB_CFG_REG 0x0U
+
+#define SMB_CFG_RST_MASK 0x80000000U
+#define SMB_CFG_RST_SHIFT 31U
+
+#define SMB_CFG_SMBEN_MASK 0x40000000U
+#define SMB_CFG_SMBEN_SHIFT 30U
+
+#define SMB_CFG_BITBANGEN_MASK 0x20000000U
+#define SMB_CFG_BITBANGEN_SHIFT 29U
+
+#define SMB_CFG_EN_NIC_SMBADDR0_MASK 0x10000000U
+#define SMB_CFG_EN_NIC_SMBADDR0_SHIFT 28U
+
+#define SMB_CFG_PROMISCMODE_MASK 0x08000000U
+#define SMB_CFG_PROMISCMODE_SHIFT 27U
+
+#define SMB_CFG_TSTMPCNTEN_MASK 0x04000000U
+#define SMB_CFG_TSTMPCNTEN_SHIFT 26U
+
+#define SMB_CFG_MSTRRTRYCNT_MASK 0x000F0000U
+#define SMB_CFG_MSTRRTRYCNT_SHIFT 16U
+
+/* SMBUS Timing config register */
+#define SMB_TIMGCFG_REG 0x4U
+
+#define SMB_TIMGCFG_MODE400_MASK 0x80000000U
+#define SMB_TIMGCFG_MODE400_SHIFT 31U
+
+#define SMB_TIMGCFG_RNDSLVSTR_MASK 0x7F000000U
+#define SMB_TIMGCFG_RNDSLVSTR_SHIFT 24U
+
+#define SMB_TIMGCFG_PERSLVSTR_MASK 0x00FF0000U
+#define SMB_TIMGCFG_PERSLVSTR_SHIFT 16U
+
+#define SMB_TIMGCFG_IDLTIME_MASK 0x0000FF00U
+#define SMB_TIMGCFG_IDLTIME_SHIFT 8U
+
+/* SMBUS Slave address register */
+#define SMB_ADDR_REG 0x8U
+
+#define SMB_EN_NIC_SMBADDR3_MASK 0x80000000U
+#define SMB_EN_NIC_SMBADDR3_SHIFT 31U
+
+#define SMB_NIC_SMBADDR3_MASK 0x7F000000U
+#define SMB_NIC_SMBADDR3_SHIFT 24U
+
+#define SMB_EN_NIC_SMBADDR2_MASK 0x00800000U
+#define SMB_EN_NIC_SMBADDR2_SHIFT 23U
+
+#define SMB_NIC_SMBADDR2_MASK 0x007F0000U
+#define SMB_NIC_SMBADDR2_SHIFT 16U
+
+#define SMB_EN_NIC_SMBADDR1_MASK 0x00008000U
+#define SMB_EN_NIC_SMBADDR1_SHIFT 15U
+
+#define SMB_NIC_SMBADDR1_MASK 0x00007F00U
+#define SMB_NIC_SMBADDR1_SHIFT 8U
+
+#define SMB_EN_NIC_SMBADDR0_MASK 0x00000080U
+#define SMB_EN_NIC_SMBADDR0_SHIFT 7U
+
+#define SMB_NIC_SMBADDR0_MASK 0x0000007FU
+#define SMB_NIC_SMBADDR0_SHIFT 0U
+
+/* SMBUS Master FIFO control register */
+#define SMB_MSTRFIFOCTL_REG 0xCU
+
+#define SMB_MSTRRXFIFOFLSH_MASK 0x80000000U
+#define SMB_MSTRRXFIFOFLSH_SHIFT 31U
+
+#define SMB_MSTRTXFIFOFLSH_MASK 0x40000000U
+#define SMB_MSTRTXFIFOFLSH_SHIFT 30U
+
+#define SMB_MSTRRXPKTCNT_MASK 0x007F0000U
+#define SMB_MSTRRXPKTCNT_SHIFT 16U
+
+#define SMB_MSTRRXFIFOTHR_MASK 0x00003F00U
+#define SMB_MSTRRXFIFOTHR_SHIFT 8U
+
+/* SMBUS Slave FIFO control register */
+#define SMB_SLVFIFOCTL_REG 0x10U
+
+#define SMB_SLVRXFIFOFLSH_MASK 0x80000000U
+#define SMB_SLVRXFIFOFLSH_SHIFT 31U
+
+#define SMB_SLVTXFIFOFLSH_MASK 0x40000000U
+#define SMB_SLVTXFIFOFLSH_SHIFT 30U
+
+#define SMB_SLVRXPKTCNT_MASK 0x007F0000U
+#define SMB_SLVRXPKTCNT_SHIFT 16U
+
+#define SMB_SLVRXFIFOTHR_MASK 0x00003F00U
+#define SMB_SLVRXFIFOTHR_SHIFT 8U
+
+/* SMBUS Bit-bang mode control register */
+#define SMB_BITBANGCTL_REG 0x14U
+
+#define SMB_SMBCLKIN_MASK 0x80000000U
+#define SMB_SMBCLKIN_SHIFT 31U
+
+#define SMB_SMBCLKOUTEN_MASK 0x40000000U
+#define SMB_SMBCLKOUTEN_SHIFT 30U
+
+#define SMB_SMBDATAIN_MASK 0x20000000U
+#define SMB_SMBDATAIN_SHIFT 29U
+
+#define SMB_SMBDATAOUTEN_MASK 0x10000000U
+#define SMB_SMBDATAOUTEN_SHIFT 28U
+
+/* SMBUS Master command register */
+#define SMB_MSTRCMD_REG 0x30U
+
+#define SMB_MSTRSTARTBUSYCMD_MASK 0x80000000U
+#define SMB_MSTRSTARTBUSYCMD_SHIFT 31U
+
+#define SMB_MSTRABORT_MASK 0x40000000U
+#define SMB_MSTRABORT_SHIFT 30U
+
+#define SMB_MSTRSTS_MASK 0x0E000000U
+#define SMB_MSTRSTS_SHIFT 25U
+
+#define SMB_MSTRSMBUSPROTO_MASK 0x00001E00U
+#define SMB_MSTRSMBUSPROTO_SHIFT 9U
+
+#define SMB_MSTRPEC_MASK 0x00000100U
+#define SMB_MSTRPEC_SHIFT 8U
+
+#define SMB_MSTRRDBYTECNT_MASK 0x000000FFU
+#define SMB_MSTRRDBYTECNT_SHIFT 0U
+
+/* SMBUS Slave command register */
+#define SMB_SLVCMD_REG 0x34U
+
+#define SMB_SLVSTARTBUSYCMD_MASK 0x80000000U
+#define SMB_SLVSTARTBUSYCMD_SHIFT 31U
+
+#define SMB_SLVABORT_MASK 0x40000000U
+#define SMB_SLVABORT_SHIFT 30U
+
+#define SMB_SLVSTS_MASK 0x03800000U
+#define SMB_SLVSTS_SHIFT 23U
+
+#define SMB_SLVPEC_MASK 0x00000100U
+#define SMB_SLVPEC_SHIFT 8U
+
+/* SMBUS Event enable register */
+#define SMB_EVTEN_REG 0x38U
+
+#define SMB_MSTRRXFIFOFULLEN_MASK 0x80000000U
+#define SMB_MSTRRXFIFOFULLEN_SHIFT 31U
+
+#define SMB_MSTRRXFIFOTHRHITEN_MASK 0x40000000U
+#define SMB_MSTRRXFIFOTHRHITEN_SHIFT 30U
+
+#define SMB_MSTRRXEVTEN_MASK 0x20000000U
+#define SMB_MSTRRXEVTEN_SHIFT 29U
+
+#define SMB_MSTRSTARTBUSYEN_MASK 0x10000000U
+#define SMB_MSTRSTARTBUSYEN_SHIFT 28U
+
+#define SMB_MSTRTXUNDEN_MASK 0x08000000U
+#define SMB_MSTRTXUNDEN_SHIFT 27U
+
+#define SMB_SLVRXFIFOFULLEN_MASK 0x04000000U
+#define SMB_SLVRXFIFOFULLEN_SHIFT 26U
+
+#define SMB_SLVRXFIFOTHRHITEN_MASK 0x02000000U
+#define SMB_SLVRXFIFOTHRHITEN_SHIFT 25U
+
+#define SMB_SLVRXEVTEN_MASK 0x01000000U
+#define SMB_SLVRXEVTEN_SHIFT 24U
+
+#define SMB_SLVSTARTBUSYEN_MASK 0x00800000U
+#define SMB_SLVSTARTBUSYEN_SHIFT 23U
+
+#define SMB_SLVTXUNDEN_MASK 0x00400000U
+#define SMB_SLVTXUNDEN_SHIFT 22U
+
+#define SMB_SLVRDEVTEN_MASK 0x00200000U
+#define SMB_SLVRDEVTEN_SHIFT 21U
+
+/* SMBUS Event status register */
+#define SMB_EVTSTS_REG 0x3CU
+
+#define SMB_MSTRRXFIFOFULLSTS_MASK 0x80000000U
+#define SMB_MSTRRXFIFOFULLSTS_SHIFT 31U
+
+#define SMB_MSTRRXFIFOTHRHITSTS_MASK 0x40000000U
+#define SMB_MSTRRXFIFOTHRHITSTS_SHIFT 30U
+
+#define SMB_MSTRRXEVTSTS_MASK 0x20000000U
+#define SMB_MSTRRXEVTSTS_SHIFT 29U
+
+#define SMB_MSTRSTARTBUSYSTS_MASK 0x10000000U
+#define SMB_MSTRSTARTBUSYSTS_SHIFT 28U
+
+#define SMB_MSTRTXUNDSTS_MASK 0x08000000U
+#define SMB_MSTRTXUNDSTS_SHIFT 27U
+
+#define SMB_SLVRXFIFOFULLSTS_MASK 0x04000000U
+#define SMB_SLVRXFIFOFULLSTS_SHIFT 26U
+
+#define SMB_SLVRXFIFOTHRHITSTS_MASK 0x02000000U
+#define SMB_SLVRXFIFOTHRHITSTS_SHIFT 25U
+
+#define SMB_SLVRXEVTSTS_MASK 0x01000000U
+#define SMB_SLVRXEVTSTS_SHIFT 24U
+
+#define SMB_SLVSTARTBUSYSTS_MASK 0x00800000U
+#define SMB_SLVSTARTBUSYSTS_SHIFT 23U
+
+#define SMB_SLVTXUNDSTS_MASK 0x00400000U
+#define SMB_SLVTXUNDSTS_SHIFT 22U
+
+#define SMB_SLVRDEVTSTS_MASK 0x00200000U
+#define SMB_SLVRDEVTSTS_SHIFT 21U
+
+/* SMBUS Master data write register */
+#define SMB_MSTRDATAWR_REG 0x40U
+
+#define SMB_MSTRWRSTS_MASK 0x80000000U
+#define SMB_MSTRWRSTS_SHIFT 31U
+
+#define SMB_MSTRWRDATA_MASK 0x000000FFU
+#define SMB_MSTRWRDATA_SHIFT 0U
+
+/* SMBUS Master data read register */
+#define SMB_MSTRDATARD_REG 0x44U
+
+#define SMB_MSTRRDSTS_MASK 0xC0000000U
+#define SMB_MSTRRDSTS_SHIFT 30U
+
+#define SMB_MSTRRDPECERR_MASK 0x20000000U
+#define SMB_MSTRRDPECERR_SHIFT 29U
+
+#define SMB_MSTRRDDATA_MASK 0x000000FFU
+#define SMB_MSTRRDDATA_SHIFT 0U
+
+/* SMBUS Slave data write register */
+#define SMB_SLVDATAWR_REG 0x48U
+
+#define SMB_SLVWRSTS_MASK 0x80000000U
+#define SMB_SLVWRSTS_SHIFT 31U
+
+#define SMB_SLVWRDATA_MASK 0x000000FFU
+#define SMB_SLVWRDATA_SHIFT 0U
+
+/* SMBUS Slave data read register */
+#define SMB_SLVDATARD_REG 0x4CU
+
+#define SMB_SLVRDSTS_MASK 0xC0000000U
+#define SMB_SLVRDSTS_SHIFT 30U
+
+#define SMB_SLVRDERRSTS_MASK 0x30000000U
+#define SMB_SLVRDERRSTS_SHIFT 28U
+
+#define SMB_SLVRDDATA_MASK 0x000000FFU
+#define SMB_SLVRDDATA_SHIFT 0U
+
+#endif /* I2C_REGS */