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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2006-10-04 10:02:10 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 13:25:06 -0400
commitc194588dba968510b5aa7a1818bd2c8b36a416f7 (patch)
tree4c9379f6482572340ab701c369e8b01eb2b43493 /arch
parentacca9b83acfe89fbb7421d5412176dee2ad2959a (diff)
[PATCH] AVR32: Allow renumbering of serial devices
Allow the board to remap actual USART peripheral devices to serial devices by calling at32_map_usart(hw_id, serial_line). This ensures that even though ATSTK1002 uses USART1 as the first serial port, it will still have a ttyS0 device. This also adds a board-specific early setup hook and moves the at32_setup_serial_console() call there from the platform code. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/avr32/boards/atstk1000/atstk1002.c16
-rw-r--r--arch/avr32/kernel/setup.c1
-rw-r--r--arch/avr32/mach-at32ap/at32ap.c3
-rw-r--r--arch/avr32/mach-at32ap/at32ap7000.c22
4 files changed, 24 insertions, 18 deletions
diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index 49164e9aadd6..cced73c58115 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -10,6 +10,7 @@
10#include <linux/init.h> 10#include <linux/init.h>
11 11
12#include <asm/arch/board.h> 12#include <asm/arch/board.h>
13#include <asm/arch/init.h>
13 14
14struct eth_platform_data __initdata eth0_data = { 15struct eth_platform_data __initdata eth0_data = {
15 .valid = 1, 16 .valid = 1,
@@ -20,13 +21,22 @@ struct eth_platform_data __initdata eth0_data = {
20 21
21extern struct lcdc_platform_data atstk1000_fb0_data; 22extern struct lcdc_platform_data atstk1000_fb0_data;
22 23
24void __init setup_board(void)
25{
26 at32_map_usart(1, 0); /* /dev/ttyS0 */
27 at32_map_usart(2, 1); /* /dev/ttyS1 */
28 at32_map_usart(3, 2); /* /dev/ttyS2 */
29
30 at32_setup_serial_console(0);
31}
32
23static int __init atstk1002_init(void) 33static int __init atstk1002_init(void)
24{ 34{
25 at32_add_system_devices(); 35 at32_add_system_devices();
26 36
27 at32_add_device_usart(1); /* /dev/ttyS0 */ 37 at32_add_device_usart(0);
28 at32_add_device_usart(2); /* /dev/ttyS1 */ 38 at32_add_device_usart(1);
29 at32_add_device_usart(3); /* /dev/ttyS2 */ 39 at32_add_device_usart(2);
30 40
31 at32_add_device_eth(0, &eth0_data); 41 at32_add_device_eth(0, &eth0_data);
32 at32_add_device_spi(0); 42 at32_add_device_spi(0);
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
index 5d68f3c6990b..ea2d1ffee478 100644
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -292,6 +292,7 @@ void __init setup_arch (char **cmdline_p)
292 292
293 setup_processor(); 293 setup_processor();
294 setup_platform(); 294 setup_platform();
295 setup_board();
295 296
296 cpu_clk = clk_get(NULL, "cpu"); 297 cpu_clk = clk_get(NULL, "cpu");
297 if (IS_ERR(cpu_clk)) { 298 if (IS_ERR(cpu_clk)) {
diff --git a/arch/avr32/mach-at32ap/at32ap.c b/arch/avr32/mach-at32ap/at32ap.c
index f7cedf5aabea..90f207e8e96d 100644
--- a/arch/avr32/mach-at32ap/at32ap.c
+++ b/arch/avr32/mach-at32ap/at32ap.c
@@ -48,9 +48,6 @@ void __init setup_platform(void)
48 at32_sm_init(); 48 at32_sm_init();
49 at32_clock_init(); 49 at32_clock_init();
50 at32_portmux_init(); 50 at32_portmux_init();
51
52 /* FIXME: This doesn't belong here */
53 at32_setup_serial_console(1);
54} 51}
55 52
56static int __init pdc_probe(struct platform_device *pdev) 53static int __init pdc_probe(struct platform_device *pdev)
diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 3dd305875087..7ff6ad8bab5f 100644
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -591,11 +591,13 @@ static inline void configure_usart3_pins(void)
591 portmux_set_func(PIOB, 17, FUNC_B); /* TXD */ 591 portmux_set_func(PIOB, 17, FUNC_B); /* TXD */
592} 592}
593 593
594static struct platform_device *setup_usart(unsigned int id) 594static struct platform_device *at32_usarts[4];
595
596void __init at32_map_usart(unsigned int hw_id, unsigned int line)
595{ 597{
596 struct platform_device *pdev; 598 struct platform_device *pdev;
597 599
598 switch (id) { 600 switch (hw_id) {
599 case 0: 601 case 0:
600 pdev = &atmel_usart0_device; 602 pdev = &atmel_usart0_device;
601 configure_usart0_pins(); 603 configure_usart0_pins();
@@ -613,7 +615,7 @@ static struct platform_device *setup_usart(unsigned int id)
613 configure_usart3_pins(); 615 configure_usart3_pins();
614 break; 616 break;
615 default: 617 default:
616 return NULL; 618 return;
617 } 619 }
618 620
619 if (PXSEG(pdev->resource[0].start) == P4SEG) { 621 if (PXSEG(pdev->resource[0].start) == P4SEG) {
@@ -622,25 +624,21 @@ static struct platform_device *setup_usart(unsigned int id)
622 data->regs = (void __iomem *)pdev->resource[0].start; 624 data->regs = (void __iomem *)pdev->resource[0].start;
623 } 625 }
624 626
625 return pdev; 627 pdev->id = line;
628 at32_usarts[line] = pdev;
626} 629}
627 630
628struct platform_device *__init at32_add_device_usart(unsigned int id) 631struct platform_device *__init at32_add_device_usart(unsigned int id)
629{ 632{
630 struct platform_device *pdev; 633 platform_device_register(at32_usarts[id]);
631 634 return at32_usarts[id];
632 pdev = setup_usart(id);
633 if (pdev)
634 platform_device_register(pdev);
635
636 return pdev;
637} 635}
638 636
639struct platform_device *atmel_default_console_device; 637struct platform_device *atmel_default_console_device;
640 638
641void __init at32_setup_serial_console(unsigned int usart_id) 639void __init at32_setup_serial_console(unsigned int usart_id)
642{ 640{
643 atmel_default_console_device = setup_usart(usart_id); 641 atmel_default_console_device = at32_usarts[usart_id];
644} 642}
645 643
646/* -------------------------------------------------------------------- 644/* --------------------------------------------------------------------