+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2012 Samsung Electronics
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
#ifndef _S3C24X0_I2C_H
u32 iicds;
u32 iiclc;
};
+
+struct exynos5_hsi2c {
+ u32 usi_ctl;
+ u32 usi_fifo_ctl;
+ u32 usi_trailing_ctl;
+ u32 usi_clk_ctl;
+ u32 usi_clk_slot;
+ u32 spi_ctl;
+ u32 uart_ctl;
+ u32 res1;
+ u32 usi_int_en;
+ u32 usi_int_stat;
+ u32 usi_modem_stat;
+ u32 usi_error_stat;
+ u32 usi_fifo_stat;
+ u32 usi_txdata;
+ u32 usi_rxdata;
+ u32 res2;
+ u32 usi_conf;
+ u32 usi_auto_conf;
+ u32 usi_timeout;
+ u32 usi_manual_cmd;
+ u32 usi_trans_status;
+ u32 usi_timing_hs1;
+ u32 usi_timing_hs2;
+ u32 usi_timing_hs3;
+ u32 usi_timing_fs1;
+ u32 usi_timing_fs2;
+ u32 usi_timing_fs3;
+ u32 usi_timing_sla;
+ u32 i2c_addr;
+};
+
+struct s3c24x0_i2c_bus {
+ bool active; /* port is active and available */
+ int node; /* device tree node */
+ int bus_num; /* i2c bus number */
+ struct s3c24x0_i2c *regs;
+ struct exynos5_hsi2c *hsregs;
+ int is_highspeed; /* High speed type, rather than I2C */
+ unsigned clock_frequency;
+ int id;
+ unsigned clk_cycle;
+ unsigned clk_div;
+};
+
+#define I2C_WRITE 0
+#define I2C_READ 1
+
+#define I2C_OK 0
+#define I2C_NOK 1
+#define I2C_NACK 2
+#define I2C_NOK_LA 3 /* Lost arbitration */
+#define I2C_NOK_TOUT 4 /* time out */
+
+/* S3C I2C Controller bits */
+#define I2CSTAT_BSY 0x20 /* Busy bit */
+#define I2CSTAT_NACK 0x01 /* Nack bit */
+#define I2CCON_ACKGEN 0x80 /* Acknowledge generation */
+#define I2CCON_IRPND 0x10 /* Interrupt pending bit */
+#define I2C_MODE_MT 0xC0 /* Master Transmit Mode */
+#define I2C_MODE_MR 0x80 /* Master Receive Mode */
+#define I2C_START_STOP 0x20 /* START / STOP */
+#define I2C_TXRX_ENA 0x10 /* I2C Tx/Rx enable */
+
+#define I2C_TIMEOUT_MS 10 /* 10 ms */
+
#endif /* _S3C24X0_I2C_H */