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authorGraf Yang <graf.yang@analog.com>2008-04-25 03:09:15 +0800
committerBryan Wu <cooloney@kernel.org>2008-04-25 03:09:15 +0800
commit5be36d22b28f01e5074f78b29aa6128da0a53641 (patch)
tree1fda8bcb0680eda6a826fc3753ee8c9f52a2c75b /include/asm-blackfin/mach-bf527
parent37b6972ad8fb08d438fd600888aff212b1b193b0 (diff)
[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>
Diffstat (limited to 'include/asm-blackfin/mach-bf527')
-rw-r--r--include/asm-blackfin/mach-bf527/bfin_serial_5xx.h48
-rw-r--r--include/asm-blackfin/mach-bf527/bfin_sir.h133
-rw-r--r--include/asm-blackfin/mach-bf527/blackfin.h15
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 c0694ecd2ecd..f0ab2736a680 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 000000000000..0612d0c9501c
--- /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 1bd07e30781c..2891727b6176 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)