diff options
Diffstat (limited to 'arch/blackfin/include/asm/bfin_serial.h')
| -rw-r--r-- | arch/blackfin/include/asm/bfin_serial.h | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/arch/blackfin/include/asm/bfin_serial.h b/arch/blackfin/include/asm/bfin_serial.h deleted file mode 100644 index b550ada7321b..000000000000 --- a/arch/blackfin/include/asm/bfin_serial.h +++ /dev/null @@ -1,429 +0,0 @@ -/* - * bfin_serial.h - Blackfin UART/Serial definitions - * - * Copyright 2006-2010 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef __BFIN_ASM_SERIAL_H__ -#define __BFIN_ASM_SERIAL_H__ - -#include <linux/circ_buf.h> -#include <linux/serial_core.h> -#include <linux/spinlock.h> -#include <linux/timer.h> -#include <linux/workqueue.h> -#include <mach/anomaly.h> -#include <mach/bfin_serial.h> - -#if defined(CONFIG_BFIN_UART0_CTSRTS) || \ - defined(CONFIG_BFIN_UART1_CTSRTS) || \ - defined(CONFIG_BFIN_UART2_CTSRTS) || \ - defined(CONFIG_BFIN_UART3_CTSRTS) -# if defined(BFIN_UART_BF54X_STYLE) || defined(BFIN_UART_BF60X_STYLE) -# define SERIAL_BFIN_HARD_CTSRTS -# else -# define SERIAL_BFIN_CTSRTS -# endif -#endif - -struct bfin_serial_port { - struct uart_port port; - unsigned int old_status; - int tx_irq; - int rx_irq; - int status_irq; -#ifndef BFIN_UART_BF54X_STYLE - unsigned int lsr; -#endif -#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; - spinlock_t rx_lock; - unsigned int tx_dma_channel; - unsigned int rx_dma_channel; - struct work_struct tx_dma_workqueue; -#elif ANOMALY_05000363 - unsigned int anomaly_threshold; -#endif -#if defined(SERIAL_BFIN_CTSRTS) || \ - defined(SERIAL_BFIN_HARD_CTSRTS) - int cts_pin; - int rts_pin; -#endif -}; - -#ifdef BFIN_UART_BF60X_STYLE - -/* UART_CTL Masks */ -#define UCEN 0x1 /* Enable UARTx Clocks */ -#define LOOP_ENA 0x2 /* Loopback Mode Enable */ -#define UMOD_MDB 0x10 /* Enable MDB Mode */ -#define UMOD_IRDA 0x20 /* Enable IrDA Mode */ -#define UMOD_MASK 0x30 /* Uart Mode Mask */ -#define WLS(x) (((x-5) & 0x03) << 8) /* Word Length Select */ -#define WLS_MASK 0x300 /* Word length Select Mask */ -#define WLS_OFFSET 8 /* Word length Select Offset */ -#define STB 0x1000 /* Stop Bits */ -#define STBH 0x2000 /* Half Stop Bits */ -#define PEN 0x4000 /* Parity Enable */ -#define EPS 0x8000 /* Even Parity Select */ -#define STP 0x10000 /* Stick Parity */ -#define FPE 0x20000 /* Force Parity Error On Transmit */ -#define FFE 0x40000 /* Force Framing Error On Transmit */ -#define SB 0x80000 /* Set Break */ -#define LCR_MASK (SB | STP | EPS | PEN | STB | WLS_MASK) -#define FCPOL 0x400000 /* Flow Control Pin Polarity */ -#define RPOLC 0x800000 /* IrDA RX Polarity Change */ -#define TPOLC 0x1000000 /* IrDA TX Polarity Change */ -#define MRTS 0x2000000 /* Manual Request To Send */ -#define XOFF 0x4000000 /* Transmitter Off */ -#define ARTS 0x8000000 /* Automatic Request To Send */ -#define ACTS 0x10000000 /* Automatic Clear To Send */ -#define RFIT 0x20000000 /* Receive FIFO IRQ Threshold */ -#define RFRT 0x40000000 /* Receive FIFO RTS Threshold */ - -/* UART_STAT Masks */ -#define DR 0x01 /* Data Ready */ -#define OE 0x02 /* Overrun Error */ -#define PE 0x04 /* Parity Error */ -#define FE 0x08 /* Framing Error */ -#define BI 0x10 /* Break Interrupt */ -#define THRE 0x20 /* THR Empty */ -#define TEMT 0x80 /* TSR and UART_THR Empty */ -#define TFI 0x100 /* Transmission Finished Indicator */ - -#define ASTKY 0x200 /* Address Sticky */ -#define ADDR 0x400 /* Address bit status */ -#define RO 0x800 /* Reception Ongoing */ -#define SCTS 0x1000 /* Sticky CTS */ -#define CTS 0x10000 /* Clear To Send */ -#define RFCS 0x20000 /* Receive FIFO Count Status */ - -/* UART_CLOCK Masks */ -#define EDBO 0x80000000 /* Enable Devide by One */ - -#else /* BFIN_UART_BF60X_STYLE */ - -/* UART_LCR Masks */ -#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */ -#define WLS_MASK 0x03 /* Word length Select Mask */ -#define WLS_OFFSET 0 /* Word length Select Offset */ -#define STB 0x04 /* Stop Bits */ -#define PEN 0x08 /* Parity Enable */ -#define EPS 0x10 /* Even Parity Select */ -#define STP 0x20 /* Stick Parity */ -#define SB 0x40 /* Set Break */ -#define DLAB 0x80 /* Divisor Latch Access */ -#define LCR_MASK (SB | STP | EPS | PEN | STB | WLS_MASK) - -/* UART_LSR Masks */ -#define DR 0x01 /* Data Ready */ -#define OE 0x02 /* Overrun Error */ -#define PE 0x04 /* Parity Error */ -#define FE 0x08 /* Framing Error */ -#define BI 0x10 /* Break Interrupt */ -#define THRE 0x20 /* THR Empty */ -#define TEMT 0x40 /* TSR and UART_THR Empty */ -#define TFI 0x80 /* Transmission Finished Indicator */ - -/* UART_MCR Masks */ -#define XOFF 0x01 /* Transmitter Off */ -#define MRTS 0x02 /* Manual Request To Send */ -#define RFIT 0x04 /* Receive FIFO IRQ Threshold */ -#define RFRT 0x08 /* Receive FIFO RTS Threshold */ -#define LOOP_ENA 0x10 /* Loopback Mode Enable */ -#define FCPOL 0x20 /* Flow Control Pin Polarity */ -#define ARTS 0x40 /* Automatic Request To Send */ -#define ACTS 0x80 /* Automatic Clear To Send */ - -/* UART_MSR Masks */ -#define SCTS 0x01 /* Sticky CTS */ -#define CTS 0x10 /* Clear To Send */ -#define RFCS 0x20 /* Receive FIFO Count Status */ - -/* UART_GCTL Masks */ -#define UCEN 0x01 /* Enable UARTx Clocks */ -#define UMOD_IRDA 0x02 /* Enable IrDA Mode */ -#define UMOD_MASK 0x02 /* Uart Mode Mask */ -#define TPOLC 0x04 /* IrDA TX Polarity Change */ -#define RPOLC 0x08 /* IrDA RX Polarity Change */ -#define FPE 0x10 /* Force Parity Error On Transmit */ -#define FFE 0x20 /* Force Framing Error On Transmit */ - -#endif /* BFIN_UART_BF60X_STYLE */ - -/* UART_IER Masks */ -#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */ -#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */ -#define ELSI 0x04 /* Enable RX Status Interrupt */ -#define EDSSI 0x08 /* Enable Modem Status Interrupt */ -#define EDTPTI 0x10 /* Enable DMA Transmit PIRQ Interrupt */ -#define ETFI 0x20 /* Enable Transmission Finished Interrupt */ -#define ERFCI 0x40 /* Enable Receive FIFO Count Interrupt */ - -#if defined(BFIN_UART_BF60X_STYLE) -# define OFFSET_REDIV 0x00 /* Version ID Register */ -# define OFFSET_CTL 0x04 /* Control Register */ -# define OFFSET_STAT 0x08 /* Status Register */ -# define OFFSET_SCR 0x0C /* SCR Scratch Register */ -# define OFFSET_CLK 0x10 /* Clock Rate Register */ -# define OFFSET_IER 0x14 /* Interrupt Enable Register */ -# define OFFSET_IER_SET 0x18 /* Set Interrupt Enable Register */ -# define OFFSET_IER_CLEAR 0x1C /* Clear Interrupt Enable Register */ -# define OFFSET_RBR 0x20 /* Receive Buffer register */ -# define OFFSET_THR 0x24 /* Transmit Holding register */ -#elif defined(BFIN_UART_BF54X_STYLE) -# define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */ -# define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */ -# define OFFSET_GCTL 0x08 /* Global Control 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_IER_SET 0x20 /* Set Interrupt Enable Register */ -# define OFFSET_IER_CLEAR 0x24 /* Clear Interrupt Enable Register */ -# define OFFSET_THR 0x28 /* Transmit Holding register */ -# define OFFSET_RBR 0x2C /* Receive Buffer register */ -#else /* BF533 style */ -# define OFFSET_THR 0x00 /* Transmit Holding register */ -# define OFFSET_RBR 0x00 /* Receive Buffer register */ -# define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */ -# define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */ -# define OFFSET_IER 0x04 /* Interrupt Enable Register */ -# 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 */ -/* code should not need IIR, so force build error if they use it */ -# undef OFFSET_IIR -#endif - -/* - * All Blackfin system MMRs are padded to 32bits even if the register - * itself is only 16bits. So use a helper macro to streamline this. - */ -#define __BFP(m) u16 m; u16 __pad_##m -struct bfin_uart_regs { -#if defined(BFIN_UART_BF60X_STYLE) - u32 revid; - u32 ctl; - u32 stat; - u32 scr; - u32 clk; - u32 ier; - u32 ier_set; - u32 ier_clear; - u32 rbr; - u32 thr; - u32 taip; - u32 tsr; - u32 rsr; - u32 txdiv; - u32 rxdiv; -#elif defined(BFIN_UART_BF54X_STYLE) - __BFP(dll); - __BFP(dlh); - __BFP(gctl); - __BFP(lcr); - __BFP(mcr); - __BFP(lsr); - __BFP(msr); - __BFP(scr); - __BFP(ier_set); - __BFP(ier_clear); - __BFP(thr); - __BFP(rbr); -#else - union { - u16 dll; - u16 thr; - const u16 rbr; - }; - const u16 __pad0; - union { - u16 dlh; - u16 ier; - }; - const u16 __pad1; - const __BFP(iir); - __BFP(lcr); - __BFP(mcr); - __BFP(lsr); - __BFP(msr); - __BFP(scr); - const u32 __pad2; - __BFP(gctl); -#endif -}; -#undef __BFP - -#define port_membase(uart) (((struct bfin_serial_port *)(uart))->port.membase) - -/* -#ifndef port_membase -# define port_membase(p) 0 -#endif -*/ -#ifdef BFIN_UART_BF60X_STYLE - -#define UART_GET_CHAR(p) bfin_read32(port_membase(p) + OFFSET_RBR) -#define UART_GET_CLK(p) bfin_read32(port_membase(p) + OFFSET_CLK) -#define UART_GET_CTL(p) bfin_read32(port_membase(p) + OFFSET_CTL) -#define UART_GET_GCTL(p) UART_GET_CTL(p) -#define UART_GET_LCR(p) UART_GET_CTL(p) -#define UART_GET_MCR(p) UART_GET_CTL(p) -#if ANOMALY_16000030 -#define UART_GET_STAT(p) \ -({ \ - u32 __ret; \ - unsigned long flags; \ - flags = hard_local_irq_save(); \ - __ret = bfin_read32(port_membase(p) + OFFSET_STAT); \ - hard_local_irq_restore(flags); \ - __ret; \ -}) -#else -#define UART_GET_STAT(p) bfin_read32(port_membase(p) + OFFSET_STAT) -#endif -#define UART_GET_MSR(p) UART_GET_STAT(p) - -#define UART_PUT_CHAR(p, v) bfin_write32(port_membase(p) + OFFSET_THR, v) -#define UART_PUT_CLK(p, v) bfin_write32(port_membase(p) + OFFSET_CLK, v) -#define UART_PUT_CTL(p, v) bfin_write32(port_membase(p) + OFFSET_CTL, v) -#define UART_PUT_GCTL(p, v) UART_PUT_CTL(p, v) -#define UART_PUT_LCR(p, v) UART_PUT_CTL(p, v) -#define UART_PUT_MCR(p, v) UART_PUT_CTL(p, v) -#define UART_PUT_STAT(p, v) bfin_write32(port_membase(p) + OFFSET_STAT, v) - -#define UART_CLEAR_IER(p, v) bfin_write32(port_membase(p) + OFFSET_IER_CLEAR, v) -#define UART_GET_IER(p) bfin_read32(port_membase(p) + OFFSET_IER) -#define UART_SET_IER(p, v) bfin_write32(port_membase(p) + OFFSET_IER_SET, v) - -#define UART_CLEAR_DLAB(p) /* MMRs not muxed on BF60x */ -#define UART_SET_DLAB(p) /* MMRs not muxed on BF60x */ - -#define UART_CLEAR_LSR(p) UART_PUT_STAT(p, -1) -#define UART_GET_LSR(p) UART_GET_STAT(p) -#define UART_PUT_LSR(p, v) UART_PUT_STAT(p, v) - -/* This handles hard CTS/RTS */ -#define BFIN_UART_CTSRTS_HARD -#define UART_CLEAR_SCTS(p) UART_PUT_STAT(p, SCTS) -#define UART_GET_CTS(x) (UART_GET_MSR(x) & CTS) -#define UART_DISABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) & ~(ARTS | MRTS)) -#define UART_ENABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) | MRTS | ARTS) -#define UART_ENABLE_INTS(x, v) UART_SET_IER(x, v) -#define UART_DISABLE_INTS(x) UART_CLEAR_IER(x, 0xF) - -#else /* BFIN_UART_BF60X_STYLE */ - -#define UART_GET_CHAR(p) bfin_read16(port_membase(p) + OFFSET_RBR) -#define UART_GET_DLL(p) bfin_read16(port_membase(p) + OFFSET_DLL) -#define UART_GET_DLH(p) bfin_read16(port_membase(p) + OFFSET_DLH) -#define UART_GET_CLK(p) ((UART_GET_DLH(p) << 8) | UART_GET_DLL(p)) -#define UART_GET_GCTL(p) bfin_read16(port_membase(p) + OFFSET_GCTL) -#define UART_GET_LCR(p) bfin_read16(port_membase(p) + OFFSET_LCR) -#define UART_GET_MCR(p) bfin_read16(port_membase(p) + OFFSET_MCR) -#define UART_GET_MSR(p) bfin_read16(port_membase(p) + OFFSET_MSR) - -#define UART_PUT_CHAR(p, v) bfin_write16(port_membase(p) + OFFSET_THR, v) -#define UART_PUT_DLL(p, v) bfin_write16(port_membase(p) + OFFSET_DLL, v) -#define UART_PUT_DLH(p, v) bfin_write16(port_membase(p) + OFFSET_DLH, v) -#define UART_PUT_CLK(p, v) do \ -{\ -UART_PUT_DLL(p, v & 0xFF); \ -UART_PUT_DLH(p, (v >> 8) & 0xFF); } while (0); - -#define UART_PUT_GCTL(p, v) bfin_write16(port_membase(p) + OFFSET_GCTL, v) -#define UART_PUT_LCR(p, v) bfin_write16(port_membase(p) + OFFSET_LCR, v) -#define UART_PUT_MCR(p, v) bfin_write16(port_membase(p) + OFFSET_MCR, v) - -#ifdef BFIN_UART_BF54X_STYLE - -#define UART_CLEAR_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER_CLEAR, v) -#define UART_GET_IER(p) bfin_read16(port_membase(p) + OFFSET_IER_SET) -#define UART_SET_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER_SET, v) - -#define UART_CLEAR_DLAB(p) /* MMRs not muxed on BF54x */ -#define UART_SET_DLAB(p) /* MMRs not muxed on BF54x */ - -#define UART_CLEAR_LSR(p) bfin_write16(port_membase(p) + OFFSET_LSR, -1) -#define UART_GET_LSR(p) bfin_read16(port_membase(p) + OFFSET_LSR) -#define UART_PUT_LSR(p, v) bfin_write16(port_membase(p) + OFFSET_LSR, v) - -/* This handles hard CTS/RTS */ -#define BFIN_UART_CTSRTS_HARD -#define UART_CLEAR_SCTS(p) bfin_write16((port_membase(p) + OFFSET_MSR), SCTS) -#define UART_GET_CTS(x) (UART_GET_MSR(x) & CTS) -#define UART_DISABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) & ~(ARTS | MRTS)) -#define UART_ENABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) | MRTS | ARTS) -#define UART_ENABLE_INTS(x, v) UART_SET_IER(x, v) -#define UART_DISABLE_INTS(x) UART_CLEAR_IER(x, 0xF) - -#else /* BF533 style */ - -#define UART_CLEAR_IER(p, v) UART_PUT_IER(p, UART_GET_IER(p) & ~(v)) -#define UART_GET_IER(p) bfin_read16(port_membase(p) + OFFSET_IER) -#define UART_PUT_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER, v) -#define UART_SET_IER(p, v) UART_PUT_IER(p, UART_GET_IER(p) | (v)) - -#define UART_CLEAR_DLAB(p) do { UART_PUT_LCR(p, UART_GET_LCR(p) & ~DLAB); SSYNC(); } while (0) -#define UART_SET_DLAB(p) do { UART_PUT_LCR(p, UART_GET_LCR(p) | DLAB); SSYNC(); } while (0) - -#define get_lsr_cache(uart) (((struct bfin_serial_port *)(uart))->lsr) -#define put_lsr_cache(uart, v) (((struct bfin_serial_port *)(uart))->lsr = (v)) - -/* -#ifndef put_lsr_cache -# define put_lsr_cache(p, v) -#endif -#ifndef get_lsr_cache -# define get_lsr_cache(p) 0 -#endif -*/ - -/* The hardware clears the LSR bits upon read, so we need to cache - * some of the more fun bits in software so they don't get lost - * when checking the LSR in other code paths (TX). - */ -static inline void UART_CLEAR_LSR(void *p) -{ - put_lsr_cache(p, 0); - bfin_write16(port_membase(p) + OFFSET_LSR, -1); -} -static inline unsigned int UART_GET_LSR(void *p) -{ - unsigned int lsr = bfin_read16(port_membase(p) + OFFSET_LSR); - put_lsr_cache(p, get_lsr_cache(p) | (lsr & (BI|FE|PE|OE))); - return lsr | get_lsr_cache(p); -} -static inline void UART_PUT_LSR(void *p, uint16_t val) -{ - put_lsr_cache(p, get_lsr_cache(p) & ~val); -} - -/* This handles soft CTS/RTS */ -#define UART_GET_CTS(x) gpio_get_value((x)->cts_pin) -#define UART_DISABLE_RTS(x) gpio_set_value((x)->rts_pin, 1) -#define UART_ENABLE_RTS(x) gpio_set_value((x)->rts_pin, 0) -#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v) -#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0) - -#endif /* BFIN_UART_BF54X_STYLE */ - -#endif /* BFIN_UART_BF60X_STYLE */ - -#ifndef BFIN_UART_TX_FIFO_SIZE -# define BFIN_UART_TX_FIFO_SIZE 2 -#endif - -#endif /* __BFIN_ASM_SERIAL_H__ */ |