[PATCHv5] OMAP: Serial: Define OMAP uart MDR1 reg and remove magic numbers
From: Emeltchenko Andrei
Date: Fri Nov 12 2010 - 08:31:30 EST
From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Define MDR1 register serial definitions used in serial and
bluetooth drivers.
Change magic number to ones defined in serial_reg for omap1/2
serial driver.
Remove redefined MDR1 register definitions in omap-serial driver.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
arch/arm/mach-omap1/serial.c | 6 ++++--
arch/arm/mach-omap2/serial.c | 15 +++++++++------
arch/arm/plat-omap/include/plat/omap-serial.h | 3 ---
drivers/serial/omap-serial.c | 6 +++---
include/linux/serial_reg.h | 12 ++++++++++++
5 files changed, 28 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index b78d074..c73d1b7 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -52,9 +52,11 @@ static inline void omap_serial_outp(struct plat_serial8250_port *p, int offset,
*/
static void __init omap_serial_reset(struct plat_serial8250_port *p)
{
- omap_serial_outp(p, UART_OMAP_MDR1, 0x07); /* disable UART */
+ omap_serial_outp(p, UART_OMAP_MDR1,
+ UART_OMAP_MDR1_DISABLE); /* disable UART */
omap_serial_outp(p, UART_OMAP_SCR, 0x08); /* TX watermark */
- omap_serial_outp(p, UART_OMAP_MDR1, 0x00); /* enable UART */
+ omap_serial_outp(p, UART_OMAP_MDR1,
+ UART_OMAP_MDR1_16X_MODE); /* enable UART */
if (!cpu_is_omap15xx()) {
omap_serial_outp(p, UART_OMAP_SYSC, 0x01);
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index becf0e3..edd7c99 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -168,9 +168,9 @@ static inline void serial_write_reg(struct omap_uart_state *uart, int offset,
static inline void __init omap_uart_reset(struct omap_uart_state *uart)
{
- serial_write_reg(uart, UART_OMAP_MDR1, 0x07);
+ serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
serial_write_reg(uart, UART_OMAP_SCR, 0x08);
- serial_write_reg(uart, UART_OMAP_MDR1, 0x00);
+ serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE);
}
#if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3)
@@ -246,9 +246,10 @@ static void omap_uart_restore_context(struct omap_uart_state *uart)
uart->context_valid = 0;
if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS)
- omap_uart_mdr1_errataset(uart, 0x07, 0xA0);
+ omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_DISABLE, 0xA0);
else
- serial_write_reg(uart, UART_OMAP_MDR1, 0x7);
+ serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
+
serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */
efr = serial_read_reg(uart, UART_EFR);
serial_write_reg(uart, UART_EFR, UART_EFR_ECB);
@@ -267,11 +268,13 @@ static void omap_uart_restore_context(struct omap_uart_state *uart)
serial_write_reg(uart, UART_OMAP_SCR, uart->scr);
serial_write_reg(uart, UART_OMAP_WER, uart->wer);
serial_write_reg(uart, UART_OMAP_SYSC, uart->sysc);
+
if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS)
- omap_uart_mdr1_errataset(uart, 0x00, 0xA1);
+ omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_16X_MODE, 0xA1);
else
/* UART 16x mode */
- serial_write_reg(uart, UART_OMAP_MDR1, 0x00);
+ serial_write_reg(uart, UART_OMAP_MDR1,
+ UART_OMAP_MDR1_16X_MODE);
}
#else
static inline void omap_uart_save_context(struct omap_uart_state *uart) {}
diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index c8dae02..6a17880 100644
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -31,9 +31,6 @@
*/
#define OMAP_SERIAL_NAME "ttyO"
-#define OMAP_MDR1_DISABLE 0x07
-#define OMAP_MDR1_MODE13X 0x03
-#define OMAP_MDR1_MODE16X 0x00
#define OMAP_MODE13X_SPEED 230400
/*
diff --git a/drivers/serial/omap-serial.c b/drivers/serial/omap-serial.c
index 14365f7..03a96db 100644
--- a/drivers/serial/omap-serial.c
+++ b/drivers/serial/omap-serial.c
@@ -753,7 +753,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
/* Protocol, Baud Rate, and Interrupt Settings */
- serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_DISABLE);
+ serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE);
serial_out(up, UART_LCR, OMAP_UART_LCR_CONF_MDB);
up->efr = serial_in(up, UART_EFR);
@@ -774,9 +774,9 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
serial_out(up, UART_LCR, cval);
if (baud > 230400 && baud != 3000000)
- serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_MODE13X);
+ serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_13X_MODE);
else
- serial_out(up, UART_OMAP_MDR1, OMAP_MDR1_MODE16X);
+ serial_out(up, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE);
/* Hardware Flow Control Configuration */
diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h
index c7a0ce1..6f38234 100644
--- a/include/linux/serial_reg.h
+++ b/include/linux/serial_reg.h
@@ -341,5 +341,17 @@
#define UART_OMAP_SYSS 0x16 /* System status register */
#define UART_OMAP_WER 0x17 /* Wake-up enable register */
+/*
+ * These are the definitions for the MDR1 register
+ */
+#define UART_OMAP_MDR1_16X_MODE 0x00 /* UART 16x mode */
+#define UART_OMAP_MDR1_SIR_MODE 0x01 /* SIR mode */
+#define UART_OMAP_MDR1_16X_ABAUD_MODE 0x02 /* UART 16x auto-baud */
+#define UART_OMAP_MDR1_13X_MODE 0x03 /* UART 13x mode */
+#define UART_OMAP_MDR1_MIR_MODE 0x04 /* MIR mode */
+#define UART_OMAP_MDR1_FIR_MODE 0x05 /* FIR mode */
+#define UART_OMAP_MDR1_CIR_MODE 0x06 /* CIR mode */
+#define UART_OMAP_MDR1_DISABLE 0x07 /* Disable (default state) */
+
#endif /* _LINUX_SERIAL_REG_H */
--
1.7.0.4
--
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