diff options
Diffstat (limited to 'arch/blackfin/include/asm/bfin_serial.h')
| -rw-r--r-- | arch/blackfin/include/asm/bfin_serial.h | 168 |
1 files changed, 154 insertions, 14 deletions
diff --git a/arch/blackfin/include/asm/bfin_serial.h b/arch/blackfin/include/asm/bfin_serial.h index 68bcc3d119b..80a58488dbe 100644 --- a/arch/blackfin/include/asm/bfin_serial.h +++ b/arch/blackfin/include/asm/bfin_serial.h @@ -18,7 +18,7 @@ defined(CONFIG_BFIN_UART1_CTSRTS) || \ defined(CONFIG_BFIN_UART2_CTSRTS) || \ defined(CONFIG_BFIN_UART3_CTSRTS) -# ifdef BFIN_UART_BF54X_STYLE +# if defined(BFIN_UART_BF54X_STYLE) || defined(BFIN_UART_BF60X_STYLE) # define CONFIG_SERIAL_BFIN_HARD_CTSRTS # else # define CONFIG_SERIAL_BFIN_CTSRTS @@ -58,14 +58,67 @@ struct bfin_serial_port { #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 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 (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 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 (STP | EPS | PEN | STB | WLS_MASK) /* UART_LSR Masks */ #define DR 0x01 /* Data Ready */ @@ -77,15 +130,6 @@ struct bfin_serial_port { #define TEMT 0x40 /* TSR and UART_THR Empty */ #define TFI 0x80 /* Transmission Finished Indicator */ -/* 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 */ - /* UART_MCR Masks */ #define XOFF 0x01 /* Transmitter Off */ #define MRTS 0x02 /* Manual Request To Send */ @@ -103,13 +147,36 @@ struct bfin_serial_port { /* UART_GCTL Masks */ #define UCEN 0x01 /* Enable UARTx Clocks */ -#define IREN 0x02 /* Enable IrDA Mode */ +#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 */ -#ifdef BFIN_UART_BF54X_STYLE +#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 */ @@ -145,7 +212,23 @@ struct bfin_serial_port { */ #define __BFP(m) u16 m; u16 __pad_##m struct bfin_uart_regs { -#ifdef BFIN_UART_BF54X_STYLE +#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); @@ -182,13 +265,58 @@ struct bfin_uart_regs { }; #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) +#define UART_GET_STAT(p) bfin_read32(port_membase(p) + OFFSET_STAT) +#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) @@ -197,6 +325,11 @@ struct bfin_uart_regs { #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) @@ -233,12 +366,17 @@ struct bfin_uart_regs { #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 @@ -267,7 +405,9 @@ static inline void UART_PUT_LSR(void *p, uint16_t val) #define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v) #define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0) -#endif +#endif /* BFIN_UART_BF54X_STYLE */ + +#endif /* BFIN_UART_BF60X_STYLE */ #ifndef BFIN_UART_TX_FIFO_SIZE # define BFIN_UART_TX_FIFO_SIZE 2 |