diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-28 12:34:01 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-28 12:34:01 -0700 |
commit | 604a2785a8482cad4d63202465133c720db5eda7 (patch) | |
tree | e2f510a8a54d7d4443cb52f3a0be46f527ebb779 /arch/blackfin/mach-bf533/include/mach/bfin_sir.h | |
parent | 66833d5f3934a19d0988b7d0de58149bfd7a5884 (diff) | |
parent | d310fb4bb73629840430cb13cb282915e49fef4b (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
Blackfin arch: Fix PM building on BF52x: No ROTWE on BF52x, add USBWE
Blackfin arch: sram: use 'unsigned long' for irqflags
Blackfin arch: let PCI depend on BROKEN
Blackfin arch: move include/asm-blackfin header files to arch/blackfin
Blackfin arch: fix bug - MPU crashes under stress
Blackfin arch: Fix bug - when to rmmod the L1_module, it stucks and then reboot the board.
Blackfin arch: dont actually need to muck with EMAC_SYSTAT for BF52x for demuxing
Blackfin arch: Add MTD Partitions for MTD_DATAFLASH, increase max SPI SCLK
Diffstat (limited to 'arch/blackfin/mach-bf533/include/mach/bfin_sir.h')
-rw-r--r-- | arch/blackfin/mach-bf533/include/mach/bfin_sir.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf533/include/mach/bfin_sir.h b/arch/blackfin/mach-bf533/include/mach/bfin_sir.h new file mode 100644 index 00000000000..9bb87e9e2e9 --- /dev/null +++ b/arch/blackfin/mach-bf533/include/mach/bfin_sir.h @@ -0,0 +1,125 @@ +/* + * 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_UART_RX, + CH_UART_RX, + CH_UART_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 int bfin_sir_hw_init(void) +{ + int ret = -ENODEV; +#ifdef CONFIG_BFIN_SIR0 + ret = peripheral_request(P_UART0_TX, DRIVER_NAME); + if (ret) + return ret; + ret = peripheral_request(P_UART0_RX, DRIVER_NAME); + if (ret) + return ret; +#endif + return ret; +} |