i2c: s3c24xx: add hsi2c controller support

Add support for hsi2c controller available on exynos5420.

Note: driver currently supports only fast speed mode 100kbps

Change-Id: I02555b1dc8f4ac21c50aa5158179768563c92f43
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: R. Chandrasekar <rc.sekar@samsung.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/i2c/s3c24x0_i2c.h b/drivers/i2c/s3c24x0_i2c.h
index 882af62063..1ae73d2777 100644
--- a/drivers/i2c/s3c24x0_i2c.h
+++ b/drivers/i2c/s3c24x0_i2c.h
@@ -15,11 +15,48 @@ struct s3c24x0_i2c {
 	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;
 };
 #endif /* _S3C24X0_I2C_H */