1 files changed, 147 insertions, 0 deletions

diff --git a/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h
new file mode 100644
index 000000000000..8f5d9c4d8d5b
--- /dev/null
+++ b/include/asm-blackfin/mach-bf537/bfin_serial_5xx.h
@@ -0,0 +1,147 @@
+#include <linux/serial.h>
+#include <asm/dma.h>
+
+#define NR_PORTS                2
+
+#define OFFSET_THR              0x00    /* Transmit Holding register            */
+#define OFFSET_RBR              0x00    /* Receive Buffer register              */
+#define OFFSET_DLL              0x00    /* Divisor Latch (Low-Byte)             */
+#define OFFSET_IER              0x04    /* Interrupt Enable Register            */
+#define OFFSET_DLH              0x04    /* Divisor Latch (High-Byte)            */
+#define OFFSET_IIR              0x08    /* Interrupt Identification Register    */
+#define OFFSET_LCR              0x0C    /* Line Control Register                */
+#define OFFSET_MCR              0x10    /* Modem Control Register               */
+#define OFFSET_LSR              0x14    /* Line Status Register                 */
+#define OFFSET_MSR              0x18    /* Modem Status Register                */
+#define OFFSET_SCR              0x1C    /* SCR Scratch Register                 */
+#define OFFSET_GCTL             0x24    /* Global Control Register              */
+
+#define UART_GET_CHAR(uart)     bfin_read16(((uart)->port.membase + OFFSET_RBR))
+#define UART_GET_DLL(uart)      bfin_read16(((uart)->port.membase + OFFSET_DLL))
+#define UART_GET_IER(uart)      bfin_read16(((uart)->port.membase + OFFSET_IER))
+#define UART_GET_DLH(uart)      bfin_read16(((uart)->port.membase + OFFSET_DLH))
+#define UART_GET_IIR(uart)      bfin_read16(((uart)->port.membase + OFFSET_IIR))
+#define UART_GET_LCR(uart)      bfin_read16(((uart)->port.membase + OFFSET_LCR))
+#define UART_GET_LSR(uart)      bfin_read16(((uart)->port.membase + OFFSET_LSR))
+#define UART_GET_GCTL(uart)     bfin_read16(((uart)->port.membase + OFFSET_GCTL))
+
+#define UART_PUT_CHAR(uart,v)   bfin_write16(((uart)->port.membase + OFFSET_THR),v)
+#define UART_PUT_DLL(uart,v)    bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
+#define UART_PUT_IER(uart,v)    bfin_write16(((uart)->port.membase + OFFSET_IER),v)
+#define UART_PUT_DLH(uart,v)    bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
+#define UART_PUT_LCR(uart,v)    bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
+#define UART_PUT_GCTL(uart,v)   bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
+
+#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
+# define CONFIG_SERIAL_BFIN_CTSRTS
+
+# ifndef CONFIG_UART0_CTS_PIN
+#  define CONFIG_UART0_CTS_PIN -1
+# endif
+
+# ifndef CONFIG_UART0_RTS_PIN
+#  define CONFIG_UART0_RTS_PIN -1
+# endif
+
+# ifndef CONFIG_UART1_CTS_PIN
+#  define CONFIG_UART1_CTS_PIN -1
+# endif
+
+# ifndef CONFIG_UART1_RTS_PIN
+#  define CONFIG_UART1_RTS_PIN -1
+# endif
+#endif
+/*
+ * The pin configuration is different from schematic
+ */
+struct bfin_serial_port {
+        struct uart_port        port;
+        unsigned int            old_status;
+#ifdef CONFIG_SERIAL_BFIN_DMA
+        int                     tx_done;
+        int                     tx_count;
+        struct circ_buf         rx_dma_buf;
+        struct timer_list       rx_dma_timer;
+        int                     rx_dma_nrows;
+        unsigned int            tx_dma_channel;
+        unsigned int            rx_dma_channel;
+        struct work_struct      tx_dma_workqueue;
+#else
+        struct work_struct      cts_workqueue;
+#endif
+#ifdef CONFIG_SERIAL_BFIN_CTSRTS
+        int             cts_pin;
+        int             rts_pin;
+#endif
+};
+
+struct bfin_serial_port bfin_serial_ports[NR_PORTS];
+struct bfin_serial_res {
+        unsigned long   uart_base_addr;
+        int             uart_irq;
+#ifdef CONFIG_SERIAL_BFIN_DMA
+        unsigned int    uart_tx_dma_channel;
+        unsigned int    uart_rx_dma_channel;
+#endif
+#ifdef CONFIG_SERIAL_BFIN_CTSRTS
+        int     uart_cts_pin;
+        int     uart_rts_pin;
+#endif
+};
+
+struct bfin_serial_res bfin_serial_resource[] = {
+#ifdef CONFIG_SERIAL_BFIN_UART0
+        {
+        0xFFC00400,
+        IRQ_UART0_RX,
+#ifdef CONFIG_SERIAL_BFIN_DMA
+        CH_UART0_TX,
+        CH_UART0_RX,
+#endif
+#ifdef CONFIG_BFIN_UART0_CTSRTS
+        CONFIG_UART0_CTS_PIN,
+        CONFIG_UART0_RTS_PIN,
+#endif
+        },
+#endif
+#ifdef CONFIG_SERIAL_BFIN_UART1
+        {
+        0xFFC02000,
+        IRQ_UART1_RX,
+#ifdef CONFIG_SERIAL_BFIN_DMA
+        CH_UART1_TX,
+        CH_UART1_RX,
+#endif
+#ifdef CONFIG_BFIN_UART1_CTSRTS
+        CONFIG_UART1_CTS_PIN,
+        CONFIG_UART1_RTS_PIN,
+#endif
+        },
+#endif
+};
+
+int nr_ports = ARRAY_SIZE(bfin_serial_resource);
+
+static void bfin_serial_hw_init(struct bfin_serial_port *uart)
+{
+        unsigned short val;
+        val = bfin_read16(BFIN_PORT_MUX);
+        val &= ~(PFDE | PFTE);
+        bfin_write16(BFIN_PORT_MUX, val);
+
+        val = bfin_read16(PORTF_FER);
+        val |= 0xF;
+        bfin_write16(PORTF_FER, val);
+
+#ifdef CONFIG_SERIAL_BFIN_CTSRTS
+        if (uart->cts_pin >= 0) {
+                gpio_request(uart->cts_pin, NULL);
+                gpio_direction_input(uart->cts_pin);
+        }
+
+        if (uart->rts_pin >= 0) {
+                gpio_request(uart->rts_pin, NULL);
+                gpio_direction_output(uart->rts_pin);
+        }
+#endif
+}