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authorMichal Simek <michal.simek@xilinx.com>2013-12-19 23:38:58 +0530
committerMichal Simek <michal.simek@xilinx.com>2014-02-19 09:41:21 +0100
commitbf83495040fcf273eba534f7c2c0cb2325d2240c (patch)
tree2b1a57422a586b1aecbaa8d11aedea28e631a6ec /drivers
parent627981213ad1693591a03614d35ccdc060aa5935 (diff)
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zynq: serial: Simplify serial driver initialization
Define both serial uarts in the driver and return default uart based on board configuration. - Move baseaddresses to hardware.h - Define default baudrate and clock values Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/serial/serial_zynq.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c
index ff28f3c..9a1ee00 100644
--- a/drivers/serial/serial_zynq.c
+++ b/drivers/serial/serial_zynq.c
@@ -10,6 +10,7 @@
#include <asm/io.h>
#include <linux/compiler.h>
#include <serial.h>
+#include <asm/arch/hardware.h>
#define ZYNQ_UART_SR_TXFULL 0x00000010 /* TX FIFO full */
#define ZYNQ_UART_SR_RXEMPTY 0x00000002 /* RX FIFO empty */
@@ -33,13 +34,23 @@ struct uart_zynq {
};
static struct uart_zynq *uart_zynq_ports[2] = {
-#ifdef CONFIG_ZYNQ_SERIAL_BASEADDR0
- [0] = (struct uart_zynq *)CONFIG_ZYNQ_SERIAL_BASEADDR0,
+ [0] = (struct uart_zynq *)ZYNQ_SERIAL_BASEADDR0,
+ [1] = (struct uart_zynq *)ZYNQ_SERIAL_BASEADDR1,
+};
+
+#if !defined(CONFIG_ZYNQ_SERIAL_BAUDRATE0)
+# define CONFIG_ZYNQ_SERIAL_BAUDRATE0 CONFIG_BAUDRATE
#endif
-#ifdef CONFIG_ZYNQ_SERIAL_BASEADDR1
- [1] = (struct uart_zynq *)CONFIG_ZYNQ_SERIAL_BASEADDR1,
+#if !defined(CONFIG_ZYNQ_SERIAL_BAUDRATE1)
+# define CONFIG_ZYNQ_SERIAL_BAUDRATE1 CONFIG_BAUDRATE
+#endif
+
+#if !defined(CONFIG_ZYNQ_SERIAL_CLOCK0)
+# define CONFIG_ZYNQ_SERIAL_CLOCK0 50000000
+#endif
+#if !defined(CONFIG_ZYNQ_SERIAL_CLOCK1)
+# define CONFIG_ZYNQ_SERIAL_CLOCK1 50000000
#endif
-};
struct uart_zynq_params {
u32 baudrate;
@@ -47,14 +58,10 @@ struct uart_zynq_params {
};
static struct uart_zynq_params uart_zynq_ports_param[2] = {
-#if defined(CONFIG_ZYNQ_SERIAL_BAUDRATE0) && defined(CONFIG_ZYNQ_SERIAL_CLOCK0)
[0].baudrate = CONFIG_ZYNQ_SERIAL_BAUDRATE0,
[0].clock = CONFIG_ZYNQ_SERIAL_CLOCK0,
-#endif
-#if defined(CONFIG_ZYNQ_SERIAL_BAUDRATE1) && defined(CONFIG_ZYNQ_SERIAL_CLOCK1)
[1].baudrate = CONFIG_ZYNQ_SERIAL_BAUDRATE1,
[1].clock = CONFIG_ZYNQ_SERIAL_CLOCK1,
-#endif
};
/* Set up the baud rate in gd struct */
@@ -186,20 +193,19 @@ struct serial_device uart_zynq_serial1_device =
__weak struct serial_device *default_serial_console(void)
{
+#if defined(CONFIG_ZYNQ_SERIAL_UART0)
if (uart_zynq_ports[0])
return &uart_zynq_serial0_device;
+#endif
+#if defined(CONFIG_ZYNQ_SERIAL_UART1)
if (uart_zynq_ports[1])
return &uart_zynq_serial1_device;
-
+#endif
return NULL;
}
void zynq_serial_initalize(void)
{
-#ifdef CONFIG_ZYNQ_SERIAL_BASEADDR0
serial_register(&uart_zynq_serial0_device);
-#endif
-#ifdef CONFIG_ZYNQ_SERIAL_BASEADDR1
serial_register(&uart_zynq_serial1_device);
-#endif
}