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authorAndrei Emeltchenko <andrei.emeltchenko@nokia.com>2010-11-30 14:11:49 -0800
committerTony Lindgren <tony@atomide.com>2010-11-30 14:11:49 -0800
commit662b083a87a3489f3f19c6e0651c1b99b0de5df0 (patch)
tree67c7ba4784a1099f404c42ba1496c3078fa4af71 /include/linux/serial_reg.h
parent498cb95175c29ed96bf32f30df2d11ec1c7f3879 (diff)
omap: Serial: Define register access modes in LCR
Access to some registers depends on register access mode Three different modes are available for OMAP (at least) • Operational mode LCR_REG[7] = 0x0 • Configuration mode A LCR_REG[7] = 0x1 and LCR_REG[7:0]! = 0xBF • Configuration mode B LCR_REG[7] = 0x1 and LCR_REG[7:0] = 0xBF Define access modes and remove redefinitions and magic numbers in serial drivers (and later in bluetooth driver). Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com> Acked-by: Govindraj.R <govindraj.raja@ti.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'include/linux/serial_reg.h')
-rw-r--r--include/linux/serial_reg.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h
index 6f3823474e6c..3ecb71a9e505 100644
--- a/include/linux/serial_reg.h
+++ b/include/linux/serial_reg.h
@@ -99,6 +99,13 @@
#define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */
#define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
+/*
+ * Access to some registers depends on register access / configuration
+ * mode.
+ */
+#define UART_LCR_CONF_MODE_A UART_LCR_DLAB /* Configutation mode A */
+#define UART_LCR_CONF_MODE_B 0xBF /* Configutation mode B */
+
#define UART_MCR 4 /* Out: Modem Control Register */
#define UART_MCR_CLKSEL 0x80 /* Divide clock by 4 (TI16C752, EFR[4]=1) */
#define UART_MCR_TCRTLR 0x40 /* Access TCR/TLR (TI16C752, EFR[4]=1) */