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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-21 09:57:55 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-21 09:57:55 -0700 |
commit | efea90a454c6bf95d489878ea366d5dff03f3fb7 (patch) | |
tree | 9eba629ea4325d67bca7e42d3fc46c346477c106 /include/asm-blackfin/mach-bf527/bfin_serial_5xx.h | |
parent | Merge branch 'audit.b43' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current (diff) | |
parent | Blackfin arch: update boards files (diff) | |
download | linux-dev-efea90a454c6bf95d489878ea366d5dff03f3fb7.tar.xz linux-dev-efea90a454c6bf95d489878ea366d5dff03f3fb7.zip |
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
Blackfin arch: update boards files
Blackfin arch: dma add some API and cleanup bf54x DMA definition
Blackfin arch: cleanup and promote the general purpose timers api to a core blackfin component
Blackfin arch: add a cheesy install target
Blackfin arch: add functions for converting between sclks and usecs
Blackfin arch: add assembly function for doing 64bit unsigned division
Blackfin arch: -mno-fdpic works
Blackfin arch: use "char bfin_board_name[]" rather than "char *bfin_board_name" per discussion on lkml as the former uses less storage
Blackfin arch: Fixing Bug: balance calls to get_task_mm with corresponding mmput calls
Blackfin serial driver Kconfig: depend on DMA not being enabled rather than a specific DMA size
Blackfin arch: Fix bug: missing CHIPID register field definition of BF54x
Blackfin arch: Fix up /proc/cpuinfo so it is like everyone else
Blackfin arch: Optimization - no need to make additional math here
Blackfin arch: force irq_flags into the .data section
Blackfin arch BF548 defconfig: enable watchdog by default
Blackfin arch: add new processor ADSP-BF52x arch/mach support
Diffstat (limited to '')
-rw-r--r-- | include/asm-blackfin/mach-bf527/bfin_serial_5xx.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h new file mode 100644 index 000000000000..0b867e6a76c4 --- /dev/null +++ b/include/asm-blackfin/mach-bf527/bfin_serial_5xx.h @@ -0,0 +1,152 @@ +#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)) +#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); + +#define DRIVER_NAME "bfin-uart" + +static void bfin_serial_hw_init(struct bfin_serial_port *uart) +{ + +#ifdef CONFIG_SERIAL_BFIN_UART0 + peripheral_request(P_UART0_TX, DRIVER_NAME); + peripheral_request(P_UART0_RX, DRIVER_NAME); +#endif + +#ifdef CONFIG_SERIAL_BFIN_UART1 + peripheral_request(P_UART1_TX, DRIVER_NAME); + peripheral_request(P_UART1_RX, DRIVER_NAME); +#endif + +#ifdef CONFIG_SERIAL_BFIN_CTSRTS + if (uart->cts_pin >= 0) { + gpio_request(uart->cts_pin, DRIVER_NAME); + gpio_direction_input(uart->cts_pin); + } + + if (uart->rts_pin >= 0) { + gpio_request(uart->rts_pin, DRIVER_NAME); + gpio_direction_output(uart->rts_pin); + } +#endif +} |