Merge branch 'master' of git://git.denx.de/u-boot-arm

[karo-tx-uboot.git] / drivers / serial / serial_zynq.c

diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c
index 050b9c06259cdb499c2877d0ccb683b68333433a..1ff27d5f4889a5198ac14d761559360236436f87 100644 (file)
--- a/drivers/serial/serial_zynq.c
+++ b/drivers/serial/serial_zynq.c
@@ -6,10 +6,15 @@
  */
 
 #include <common.h>
+#include <fdtdec.h>
 #include <watchdog.h>
 #include <asm/io.h>
 #include <linux/compiler.h>
 #include <serial.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+
+DECLARE_GLOBAL_DATA_PTR;
 
 #define ZYNQ_UART_SR_TXFULL    0x00000010 /* TX FIFO full */
 #define ZYNQ_UART_SR_RXEMPTY   0x00000002 /* RX FIFO empty */
@@ -21,10 +26,6 @@
 
 #define ZYNQ_UART_MR_PARITY_NONE       0x00000020  /* No parity mode */
 
-/* Some clock/baud constants */
-#define ZYNQ_UART_BDIV 15 /* Default/reset BDIV value */
-#define ZYNQ_UART_BASECLK      3125000L /* master / (bdiv + 1) */
-
 struct uart_zynq {
        u32 control; /* Control Register [8:0] */
        u32 mode; /* Mode Register [10:0] */
@@ -37,28 +38,24 @@ 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
-};
 
 struct uart_zynq_params {
        u32 baudrate;
-       u32 clock;
 };
 
 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 */
@@ -68,7 +65,7 @@ static void uart_zynq_serial_setbrg(const int port)
        unsigned int calc_bauderror, bdiv, bgen;
        unsigned long calc_baud = 0;
        unsigned long baud = uart_zynq_ports_param[port].baudrate;
-       unsigned long clock = uart_zynq_ports_param[port].clock;
+       unsigned long clock = get_uart_clk(port);
        struct uart_zynq *regs = uart_zynq_ports[port];
 
        /*                master clock
@@ -156,17 +153,17 @@ static int uart_zynq_serial_getc(const int port)
 
 /* Multi serial device functions */
 #define DECLARE_PSSERIAL_FUNCTIONS(port) \
-       int uart_zynq##port##_init(void) \
+       static int uart_zynq##port##_init(void) \
                                { return uart_zynq_serial_init(port); } \
-       void uart_zynq##port##_setbrg(void) \
+       static void uart_zynq##port##_setbrg(void) \
                                { return uart_zynq_serial_setbrg(port); } \
-       int uart_zynq##port##_getc(void) \
+       static int uart_zynq##port##_getc(void) \
                                { return uart_zynq_serial_getc(port); } \
-       int uart_zynq##port##_tstc(void) \
+       static int uart_zynq##port##_tstc(void) \
                                { return uart_zynq_serial_tstc(port); } \
-       void uart_zynq##port##_putc(const char c) \
+       static void uart_zynq##port##_putc(const char c) \
                                { uart_zynq_serial_putc(c, port); } \
-       void uart_zynq##port##_puts(const char *s) \
+       static void uart_zynq##port##_puts(const char *s) \
                                { uart_zynq_serial_puts(s, port); }
 
 /* Serial device descriptor */
@@ -182,28 +179,52 @@ static int uart_zynq_serial_getc(const int port)
 }
 
 DECLARE_PSSERIAL_FUNCTIONS(0);
-struct serial_device uart_zynq_serial0_device =
+static struct serial_device uart_zynq_serial0_device =
        INIT_PSSERIAL_STRUCTURE(0, "ttyPS0");
 DECLARE_PSSERIAL_FUNCTIONS(1);
-struct serial_device uart_zynq_serial1_device =
+static struct serial_device uart_zynq_serial1_device =
        INIT_PSSERIAL_STRUCTURE(1, "ttyPS1");
 
+#ifdef CONFIG_OF_CONTROL
+__weak struct serial_device *default_serial_console(void)
+{
+       const void *blob = gd->fdt_blob;
+       int node;
+       unsigned int base_addr;
+
+       node = fdt_path_offset(blob, "serial0");
+       if (node < 0)
+               return NULL;
+
+       base_addr = fdtdec_get_addr(blob, node, "reg");
+       if (base_addr == FDT_ADDR_T_NONE)
+               return NULL;
+
+       if (base_addr == ZYNQ_SERIAL_BASEADDR0)
+               return &uart_zynq_serial0_device;
+
+       if (base_addr == ZYNQ_SERIAL_BASEADDR1)
+               return &uart_zynq_serial1_device;
+
+       return NULL;
+}
+#else
 __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;
 }
+#endif
 
-void zynq_serial_initalize(void)
+void zynq_serial_initialize(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
 }