[U-Boot] [PATCH 2/4] serial: ns16550: centralize identification of uart variants

[Matthijs van Duin <matthijsvanduin@gmail.com>]

Signed-off-by: Matthijs van Duin <matthijsvanduin@gmail.com>
---
 drivers/serial/ns16550.c |  8 ++++----
 include/ns16550.h        | 11 +++++++++--
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 9cec58c887c8..5ac2469b5760 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -36,7 +36,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #endif
 #endif /* !CONFIG_DM_SERIAL */
 
-#if defined(CONFIG_SOC_KEYSTONE) || defined(CONFIG_SOC_DA8XX)
+#ifdef CONFIG_NS16550_C6X
 #define UART_REG_VAL_PWREMU_MGMT_UART_DISABLE   0
 #define UART_REG_VAL_PWREMU_MGMT_UART_ENABLE ((1 << 14) | (1 << 13) | (1 << 0))
 #undef UART_MCRVAL
@@ -174,18 +174,18 @@ void NS16550_init(NS16550_t com_port, int baud_divisor)
 		;
 
 	serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
-#if defined(CONFIG_ARCH_OMAP2PLUS)
+#ifdef CONFIG_NS16550_OMAP
 	serial_out(0x7, &com_port->mdr1);	/* mode select reset TL16C750*/
 #endif
 	serial_out(UART_MCRVAL, &com_port->mcr);
 	serial_out(ns16550_getfcr(com_port), &com_port->fcr);
 	if (baud_divisor != -1)
 		NS16550_setbrg(com_port, baud_divisor);
-#if defined(CONFIG_ARCH_OMAP2PLUS)
+#ifdef CONFIG_NS16550_OMAP
 	/* /16 is proper to hit 115200 with 48MHz */
 	serial_out(0, &com_port->mdr1);
 #endif
-#if defined(CONFIG_SOC_KEYSTONE) || defined(CONFIG_SOC_DA8XX)
+#ifdef CONFIG_NS16550_C6X
 	serial_out(UART_REG_VAL_PWREMU_MGMT_UART_ENABLE, &com_port->pwr_mgmt);
 #endif
 }
diff --git a/include/ns16550.h b/include/ns16550.h
index a988d297e144..4a87ab9c8e71 100644
--- a/include/ns16550.h
+++ b/include/ns16550.h
@@ -45,6 +45,13 @@
 	unsigned char postpad_##x[-CONFIG_SYS_NS16550_REG_SIZE - 1];
 #endif
 
+/* Identify major NS16550 variants */
+#if defined(CONFIG_SOC_KEYSTONE) || defined(CONFIG_SOC_DA8XX)
+#define CONFIG_NS16550_C6X 1
+#elif defined(CONFIG_ARCH_OMAP2PLUS)
+#define CONFIG_NS16550_OMAP 1
+#endif
+
 /**
  * struct ns16550_platdata - information about a NS16550 port
  *
@@ -71,14 +78,14 @@ struct NS16550 {
 	UART_REG(lsr);		/* 5 */
 	UART_REG(msr);		/* 6 */
 	UART_REG(spr);		/* 7 */
-#if defined(CONFIG_SOC_KEYSTONE) || defined(CONFIG_SOC_DA8XX)
+#if defined(CONFIG_NS16550_C6X)
 	UART_REG(reg8);		/* 8 */
 	UART_REG(reg9);		/* 9 */
 	UART_REG(revid1);	/* A */
 	UART_REG(revid2);	/* B */
 	UART_REG(pwr_mgmt);	/* C */
 	UART_REG(mdr1);		/* D */
-#else
+#elif defined(CONFIG_NS16550_OMAP)
 	UART_REG(mdr1);		/* 8 */
 	UART_REG(reg9);		/* 9 */
 	UART_REG(regA);		/* A */
-- 
2.11.0