Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/mips/bcm47xx/serial.c
26442 views
1
/*

2
 * 8250 UART probe driver for the BCM47XX platforms

3
 * Author: Aurelien Jarno

4
 *

5
 * This file is subject to the terms and conditions of the GNU General Public

6
 * License.  See the file "COPYING" in the main directory of this archive

7
 * for more details.

8
 *

9
 * Copyright (C) 2007 Aurelien Jarno <[email protected]>

10
 */

11


12
#include <linux/init.h>

13
#include <linux/serial.h>

14
#include <linux/serial_8250.h>

15
#include <linux/ssb/ssb.h>

16
#include <bcm47xx.h>

17


18
static struct plat_serial8250_port uart8250_data[5];

19


20
static struct platform_device uart8250_device = {

21
	.name			= "serial8250",

22
	.id			= PLAT8250_DEV_PLATFORM,

23
	.dev			= {

24
		.platform_data	= uart8250_data,

25
	},

26
};

27


28
#ifdef CONFIG_BCM47XX_SSB

29
static int __init uart8250_init_ssb(void)

30
{

31
	int i;

32
	struct ssb_mipscore *mcore = &(bcm47xx_bus.ssb.mipscore);

33


34
	memset(&uart8250_data, 0,  sizeof(uart8250_data));

35


36
	for (i = 0; i < mcore->nr_serial_ports &&

37
		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {

38
		struct plat_serial8250_port *p = &(uart8250_data[i]);

39
		struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);

40


41
		p->mapbase = (unsigned int)ssb_port->regs;

42
		p->membase = (void *)ssb_port->regs;

43
		p->irq = ssb_port->irq + 2;

44
		p->uartclk = ssb_port->baud_base;

45
		p->regshift = ssb_port->reg_shift;

46
		p->iotype = UPIO_MEM;

47
		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;

48
	}

49
	return platform_device_register(&uart8250_device);

50
}

51
#endif

52


53
#ifdef CONFIG_BCM47XX_BCMA

54
static int __init uart8250_init_bcma(void)

55
{

56
	int i;

57
	struct bcma_drv_cc *cc = &(bcm47xx_bus.bcma.bus.drv_cc);

58


59
	memset(&uart8250_data, 0,  sizeof(uart8250_data));

60


61
	for (i = 0; i < cc->nr_serial_ports &&

62
		    i < ARRAY_SIZE(uart8250_data) - 1; i++) {

63
		struct plat_serial8250_port *p = &(uart8250_data[i]);

64
		struct bcma_serial_port *bcma_port;

65
		bcma_port = &(cc->serial_ports[i]);

66


67
		p->mapbase = (unsigned int)bcma_port->regs;

68
		p->membase = (void *)bcma_port->regs;

69
		p->irq = bcma_port->irq;

70
		p->uartclk = bcma_port->baud_base;

71
		p->regshift = bcma_port->reg_shift;

72
		p->iotype = UPIO_MEM;

73
		p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;

74
	}

75
	return platform_device_register(&uart8250_device);

76
}

77
#endif

78


79
static int __init uart8250_init(void)

80
{

81
	switch (bcm47xx_bus_type) {

82
#ifdef CONFIG_BCM47XX_SSB

83
	case BCM47XX_BUS_TYPE_SSB:

84
		return uart8250_init_ssb();

85
#endif

86
#ifdef CONFIG_BCM47XX_BCMA

87
	case BCM47XX_BUS_TYPE_BCMA:

88
		return uart8250_init_bcma();

89
#endif

90
	}

91
	return -EINVAL;

92
}

93
device_initcall(uart8250_init);

94


95