[Blackfin] arch: add Blackfin on-chip SIR IrDA driver support

 - add platform device resources in board files
 - add new bfin_sir.h to each machines

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

3 files changed, 180 insertions, 16 deletions

diff --git a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
index c0694ecd2ec..f0ab2736a68 100644
--- a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
@@ -1,22 +1,38 @@
+/*
+ * file:        include/asm-blackfin/mach-bf527/bfin_serial_5xx.h
+ * based on:
+ * author:
+ *
+ * created:
+ * description:
+ *	blackfin serial driver head file
+ * rev:
+ *
+ * modified:
+ *
+ *
+ * bugs:         enter bugs at http://blackfin.uclinux.org/
+ *
+ * this program is free software; you can redistribute it and/or modify
+ * it under the terms of the gnu general public license as published by
+ * the free software foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * this program is distributed in the hope that it will be useful,
+ * but without any warranty; without even the implied warranty of
+ * merchantability or fitness for a particular purpose.  see the
+ * gnu general public license for more details.
+ *
+ * you should have received a copy of the gnu general public license
+ * along with this program; see the file copying.
+ * if not, write to the free software foundation,
+ * 59 temple place - suite 330, boston, ma 02111-1307, usa.
+ */
+
 #include <linux/serial.h>
 #include <asm/dma.h>
 #include <asm/portmux.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))
@@ -92,7 +108,7 @@ static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
 	bfin_write16(uart->port.membase + OFFSET_LSR, -1);
 }
 
-struct bfin_serial_port bfin_serial_ports[NR_PORTS];
+struct bfin_serial_port bfin_serial_ports[BFIN_UART_NR_PORTS];
 struct bfin_serial_res {
 	unsigned long uart_base_addr;
 	int uart_irq;
diff --git a/include/asm-blackfin/mach-bf527/bfin_sir.h b/include/asm-blackfin/mach-bf527/bfin_sir.h
new file mode 100644
index 00000000000..0612d0c9501
--- /dev/null
+++ b/include/asm-blackfin/mach-bf527/bfin_sir.h
@@ -0,0 +1,133 @@
+/*
+ * Blackfin Infra-red Driver
+ *
+ * Copyright 2006-2008 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ *
+ */
+
+#include <linux/serial.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#define SIR_UART_GET_CHAR(port)   bfin_read16((port)->membase + OFFSET_RBR)
+#define SIR_UART_GET_DLL(port)    bfin_read16((port)->membase + OFFSET_DLL)
+#define SIR_UART_GET_IER(port)    bfin_read16((port)->membase + OFFSET_IER)
+#define SIR_UART_GET_DLH(port)    bfin_read16((port)->membase + OFFSET_DLH)
+#define SIR_UART_GET_IIR(port)    bfin_read16((port)->membase + OFFSET_IIR)
+#define SIR_UART_GET_LCR(port)    bfin_read16((port)->membase + OFFSET_LCR)
+#define SIR_UART_GET_GCTL(port)   bfin_read16((port)->membase + OFFSET_GCTL)
+
+#define SIR_UART_PUT_CHAR(port, v) bfin_write16(((port)->membase + OFFSET_THR), v)
+#define SIR_UART_PUT_DLL(port, v)  bfin_write16(((port)->membase + OFFSET_DLL), v)
+#define SIR_UART_PUT_IER(port, v)  bfin_write16(((port)->membase + OFFSET_IER), v)
+#define SIR_UART_PUT_DLH(port, v)  bfin_write16(((port)->membase + OFFSET_DLH), v)
+#define SIR_UART_PUT_LCR(port, v)  bfin_write16(((port)->membase + OFFSET_LCR), v)
+#define SIR_UART_PUT_GCTL(port, v) bfin_write16(((port)->membase + OFFSET_GCTL), v)
+
+#ifdef CONFIG_SIR_BFIN_DMA
+struct dma_rx_buf {
+	char *buf;
+	int head;
+	int tail;
+	};
+#endif /* CONFIG_SIR_BFIN_DMA */
+
+struct bfin_sir_port {
+	unsigned char __iomem   *membase;
+	unsigned int            irq;
+	unsigned int            lsr;
+	unsigned long           clk;
+	struct net_device       *dev;
+#ifdef CONFIG_SIR_BFIN_DMA
+	int                     tx_done;
+	struct dma_rx_buf       rx_dma_buf;
+	struct timer_list       rx_dma_timer;
+	int                     rx_dma_nrows;
+#endif /* CONFIG_SIR_BFIN_DMA */
+	unsigned int            tx_dma_channel;
+	unsigned int            rx_dma_channel;
+};
+
+struct bfin_sir_port sir_ports[BFIN_UART_NR_PORTS];
+
+struct bfin_sir_port_res {
+	unsigned long   base_addr;
+	int             irq;
+	unsigned int    rx_dma_channel;
+	unsigned int    tx_dma_channel;
+};
+
+struct bfin_sir_port_res bfin_sir_port_resource[] = {
+#ifdef CONFIG_BFIN_SIR0
+	{
+	0xFFC00400,
+	IRQ_UART0_RX,
+	CH_UART0_RX,
+	CH_UART0_TX,
+	},
+#endif
+#ifdef CONFIG_BFIN_SIR1
+	{
+	0xFFC02000,
+	IRQ_UART1_RX,
+	CH_UART1_RX,
+	CH_UART1_TX,
+	},
+#endif
+};
+
+int nr_sirs = ARRAY_SIZE(bfin_sir_port_resource);
+
+struct bfin_sir_self {
+	struct bfin_sir_port    *sir_port;
+	spinlock_t              lock;
+	unsigned int            open;
+	int                     speed;
+	int                     newspeed;
+
+	struct sk_buff          *txskb;
+	struct sk_buff          *rxskb;
+	struct net_device_stats stats;
+	struct device           *dev;
+	struct irlap_cb         *irlap;
+	struct qos_info         qos;
+
+	iobuff_t                tx_buff;
+	iobuff_t                rx_buff;
+
+	struct work_struct      work;
+	int                     mtt;
+};
+
+static inline unsigned int SIR_UART_GET_LSR(struct bfin_sir_port *port)
+{
+	unsigned int lsr = bfin_read16(port->membase + OFFSET_LSR);
+	port->lsr |= (lsr & (BI|FE|PE|OE));
+	return lsr | port->lsr;
+}
+
+static inline void SIR_UART_CLEAR_LSR(struct bfin_sir_port *port)
+{
+	port->lsr = 0;
+	bfin_read16(port->membase + OFFSET_LSR);
+}
+
+#define DRIVER_NAME "bfin_sir"
+
+static void bfin_sir_hw_init(void)
+{
+#ifdef CONFIG_BFIN_SIR0
+	peripheral_request(P_UART0_TX, DRIVER_NAME);
+	peripheral_request(P_UART0_RX, DRIVER_NAME);
+#endif
+
+#ifdef CONFIG_BFIN_SIR1
+	peripheral_request(P_UART1_TX, DRIVER_NAME);
+	peripheral_request(P_UART1_RX, DRIVER_NAME);
+#endif
+	SSYNC();
+}
diff --git a/include/asm-blackfin/mach-bf527/blackfin.h b/include/asm-blackfin/mach-bf527/blackfin.h
index 1bd07e30781..2891727b617 100644
--- a/include/asm-blackfin/mach-bf527/blackfin.h
+++ b/include/asm-blackfin/mach-bf527/blackfin.h
@@ -64,6 +64,21 @@
 #define STATUS_P1	0x02
 #define STATUS_P0	0x01
 
+#define BFIN_UART_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              */
+
 /* DPMC*/
 #define bfin_read_STOPCK_OFF() bfin_read_STOPCK()
 #define bfin_write_STOPCK_OFF(val) bfin_write_STOPCK(val)