diff options
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 18 | ||||
| -rw-r--r-- | drivers/serial/pxa.c | 21 | ||||
| -rw-r--r-- | include/asm-arm/arch-pxa/pxa-regs.h | 33 | ||||
| -rw-r--r-- | include/asm-arm/arch-pxa/uncompress.h | 1 |
4 files changed, 71 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 719b91e93fa..218eb9671fa 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -253,6 +253,10 @@ static struct platform_device stuart_device = { .name = "pxa2xx-uart", .id = 2, }; +static struct platform_device hwuart_device = { + .name = "pxa2xx-uart", + .id = 3, +}; static struct resource i2c_resources[] = { { @@ -310,7 +314,19 @@ static struct platform_device *devices[] __initdata = { static int __init pxa_init(void) { - return platform_add_devices(devices, ARRAY_SIZE(devices)); + int cpuid, ret; + + ret = platform_add_devices(devices, ARRAY_SIZE(devices)); + if (ret) + return ret; + + /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */ + cpuid = read_cpuid(CPUID_ID); + if (((cpuid >> 4) & 0xfff) == 0x2d0 || + ((cpuid >> 4) & 0xfff) == 0x290) + ret = platform_device_register(&hwuart_device); + + return ret; } subsys_initcall(pxa_init); diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c index 90c2a86c421..005f027e081 100644 --- a/drivers/serial/pxa.c +++ b/drivers/serial/pxa.c @@ -358,6 +358,9 @@ static int serial_pxa_startup(struct uart_port *port) unsigned long flags; int retval; + if (port->line == 3) /* HWUART */ + up->mcr |= UART_MCR_AFE; + else up->mcr = 0; /* @@ -481,8 +484,10 @@ serial_pxa_set_termios(struct uart_port *port, struct termios *termios, if ((up->port.uartclk / quot) < (2400 * 16)) fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR1; - else + else if ((up->port.uartclk / quot) < (230400 * 16)) fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR8; + else + fcr = UART_FCR_ENABLE_FIFO | UART_FCR_PXAR32; /* * Ok, we're now changing the port state. Do it with @@ -772,6 +777,20 @@ static struct uart_pxa_port serial_pxa_ports[] = { .ops = &serial_pxa_pops, .line = 2, }, + }, { /* HWUART */ + .name = "HWUART", + .cken = CKEN4_HWUART, + .port = { + .type = PORT_PXA, + .iotype = UPIO_MEM, + .membase = (void *)&HWUART, + .mapbase = __PREG(HWUART), + .irq = IRQ_HWUART, + .uartclk = 921600 * 16, + .fifosize = 64, + .ops = &serial_pxa_pops, + .line = 3, + }, } }; diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h index a6a34edec81..75f085dc989 100644 --- a/include/asm-arm/arch-pxa/pxa-regs.h +++ b/include/asm-arm/arch-pxa/pxa-regs.h @@ -326,6 +326,25 @@ #define STDLL __REG(0x40700000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */ #define STDLH __REG(0x40700004) /* Divisor Latch High Register (DLAB = 1) (read/write) */ +/* Hardware UART (HWUART) */ +#define HWUART HWRBR +#define HWRBR __REG(0x41600000) /* Receive Buffer Register (read only) */ +#define HWTHR __REG(0x41600000) /* Transmit Holding Register (write only) */ +#define HWIER __REG(0x41600004) /* Interrupt Enable Register (read/write) */ +#define HWIIR __REG(0x41600008) /* Interrupt ID Register (read only) */ +#define HWFCR __REG(0x41600008) /* FIFO Control Register (write only) */ +#define HWLCR __REG(0x4160000C) /* Line Control Register (read/write) */ +#define HWMCR __REG(0x41600010) /* Modem Control Register (read/write) */ +#define HWLSR __REG(0x41600014) /* Line Status Register (read only) */ +#define HWMSR __REG(0x41600018) /* Modem Status Register (read only) */ +#define HWSPR __REG(0x4160001C) /* Scratch Pad Register (read/write) */ +#define HWISR __REG(0x41600020) /* Infrared Selection Register (read/write) */ +#define HWFOR __REG(0x41600024) /* Receive FIFO Occupancy Register (read only) */ +#define HWABR __REG(0x41600028) /* Auto-Baud Control Register (read/write) */ +#define HWACR __REG(0x4160002C) /* Auto-Baud Count Register (read only) */ +#define HWDLL __REG(0x41600000) /* Divisor Latch Low Register (DLAB = 1) (read/write) */ +#define HWDLH __REG(0x41600004) /* Divisor Latch High Register (DLAB = 1) (read/write) */ + #define IER_DMAE (1 << 7) /* DMA Requests Enable */ #define IER_UUE (1 << 6) /* UART Unit Enable */ #define IER_NRZE (1 << 5) /* NRZ coding Enable */ @@ -1250,9 +1269,13 @@ #define GPIO40_FFDTR 40 /* FFUART data terminal Ready */ #define GPIO41_FFRTS 41 /* FFUART request to send */ #define GPIO42_BTRXD 42 /* BTUART receive data */ +#define GPIO42_HWRXD 42 /* HWUART receive data */ #define GPIO43_BTTXD 43 /* BTUART transmit data */ +#define GPIO43_HWTXD 43 /* HWUART transmit data */ #define GPIO44_BTCTS 44 /* BTUART clear to send */ +#define GPIO44_HWCTS 44 /* HWUART clear to send */ #define GPIO45_BTRTS 45 /* BTUART request to send */ +#define GPIO45_HWRTS 45 /* HWUART request to send */ #define GPIO45_AC97_SYSCLK 45 /* AC97 System Clock */ #define GPIO46_ICPRXD 46 /* ICP receive data */ #define GPIO46_STRXD 46 /* STD_UART receive data */ @@ -1378,17 +1401,26 @@ #define GPIO40_FFDTR_MD (40 | GPIO_ALT_FN_2_OUT) #define GPIO41_FFRTS_MD (41 | GPIO_ALT_FN_2_OUT) #define GPIO42_BTRXD_MD (42 | GPIO_ALT_FN_1_IN) +#define GPIO42_HWRXD_MD (42 | GPIO_ALT_FN_3_IN) #define GPIO43_BTTXD_MD (43 | GPIO_ALT_FN_2_OUT) +#define GPIO43_HWTXD_MD (43 | GPIO_ALT_FN_3_OUT) #define GPIO44_BTCTS_MD (44 | GPIO_ALT_FN_1_IN) +#define GPIO44_HWCTS_MD (44 | GPIO_ALT_FN_3_IN) #define GPIO45_BTRTS_MD (45 | GPIO_ALT_FN_2_OUT) +#define GPIO45_HWRTS_MD (45 | GPIO_ALT_FN_3_OUT) #define GPIO45_SYSCLK_AC97_MD (45 | GPIO_ALT_FN_1_OUT) #define GPIO46_ICPRXD_MD (46 | GPIO_ALT_FN_1_IN) #define GPIO46_STRXD_MD (46 | GPIO_ALT_FN_2_IN) #define GPIO47_ICPTXD_MD (47 | GPIO_ALT_FN_2_OUT) #define GPIO47_STTXD_MD (47 | GPIO_ALT_FN_1_OUT) #define GPIO48_nPOE_MD (48 | GPIO_ALT_FN_2_OUT) +#define GPIO48_HWTXD_MD (48 | GPIO_ALT_FN_1_OUT) +#define GPIO48_nPOE_MD (48 | GPIO_ALT_FN_2_OUT) +#define GPIO49_HWRXD_MD (49 | GPIO_ALT_FN_1_IN) #define GPIO49_nPWE_MD (49 | GPIO_ALT_FN_2_OUT) #define GPIO50_nPIOR_MD (50 | GPIO_ALT_FN_2_OUT) +#define GPIO50_HWCTS_MD (50 | GPIO_ALT_FN_1_IN) +#define GPIO51_HWRTS_MD (51 | GPIO_ALT_FN_1_OUT) #define GPIO51_nPIOW_MD (51 | GPIO_ALT_FN_2_OUT) #define GPIO52_nPCE_1_MD (52 | GPIO_ALT_FN_2_OUT) #define GPIO53_nPCE_2_MD (53 | GPIO_ALT_FN_2_OUT) @@ -1763,6 +1795,7 @@ #define CKEN7_BTUART (1 << 7) /* BTUART Unit Clock Enable */ #define CKEN6_FFUART (1 << 6) /* FFUART Unit Clock Enable */ #define CKEN5_STUART (1 << 5) /* STUART Unit Clock Enable */ +#define CKEN4_HWUART (1 << 4) /* HWUART Unit Clock Enable */ #define CKEN4_SSP3 (1 << 4) /* SSP3 Unit Clock Enable */ #define CKEN3_SSP (1 << 3) /* SSP Unit Clock Enable */ #define CKEN3_SSP2 (1 << 3) /* SSP2 Unit Clock Enable */ diff --git a/include/asm-arm/arch-pxa/uncompress.h b/include/asm-arm/arch-pxa/uncompress.h index 4428d3eb743..fe38090444e 100644 --- a/include/asm-arm/arch-pxa/uncompress.h +++ b/include/asm-arm/arch-pxa/uncompress.h @@ -12,6 +12,7 @@ #define FFUART ((volatile unsigned long *)0x40100000) #define BTUART ((volatile unsigned long *)0x40200000) #define STUART ((volatile unsigned long *)0x40700000) +#define HWUART ((volatile unsigned long *)0x41600000) #define UART FFUART |