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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2006-12-04 07:46:52 -0500
committerHaavard Skinnemoen <hskinnemoen@atmel.com>2006-12-08 07:06:17 -0500
commitc3e2a79c0bd3e12b67ce5f11cab10951ae8b7f37 (patch)
tree5d7290aaa6c92c781e3c2dafab44b946d9419af0 /arch
parent68380b581383c028830f79ec2670f4a193854aa6 (diff)
[AVR32] Portmux API update
Rename portmux_set_func to at32_select_periph, add at32_select_gpio and add flags parameter to specify the initial state of the pins. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/avr32/mach-at32ap/at32ap7000.c144
-rw-r--r--arch/avr32/mach-at32ap/pio.c85
2 files changed, 146 insertions, 83 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 7ff6ad8bab5f..ada7930d5a4d 100644
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -11,6 +11,7 @@
11 11
12#include <asm/io.h> 12#include <asm/io.h>
13 13
14#include <asm/arch/at32ap7000.h>
14#include <asm/arch/board.h> 15#include <asm/arch/board.h>
15#include <asm/arch/portmux.h> 16#include <asm/arch/portmux.h>
16#include <asm/arch/sm.h> 17#include <asm/arch/sm.h>
@@ -57,6 +58,9 @@ static struct platform_device _name##_id##_device = { \
57 .num_resources = ARRAY_SIZE(_name##_id##_resource), \ 58 .num_resources = ARRAY_SIZE(_name##_id##_resource), \
58} 59}
59 60
61#define select_peripheral(pin, periph, flags) \
62 at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)
63
60#define DEV_CLK(_name, devname, bus, _index) \ 64#define DEV_CLK(_name, devname, bus, _index) \
61static struct clk devname##_##_name = { \ 65static struct clk devname##_##_name = { \
62 .name = #_name, \ 66 .name = #_name, \
@@ -67,18 +71,6 @@ static struct clk devname##_##_name = { \
67 .index = _index, \ 71 .index = _index, \
68} 72}
69 73
70enum {
71 PIOA,
72 PIOB,
73 PIOC,
74 PIOD,
75};
76
77enum {
78 FUNC_A,
79 FUNC_B,
80};
81
82unsigned long at32ap7000_osc_rates[3] = { 74unsigned long at32ap7000_osc_rates[3] = {
83 [0] = 32768, 75 [0] = 32768,
84 /* FIXME: these are ATSTK1002-specific */ 76 /* FIXME: these are ATSTK1002-specific */
@@ -569,26 +561,26 @@ DEV_CLK(usart, atmel_usart3, pba, 6);
569 561
570static inline void configure_usart0_pins(void) 562static inline void configure_usart0_pins(void)
571{ 563{
572 portmux_set_func(PIOA, 8, FUNC_B); /* RXD */ 564 select_peripheral(PA(8), PERIPH_B, 0); /* RXD */
573 portmux_set_func(PIOA, 9, FUNC_B); /* TXD */ 565 select_peripheral(PA(9), PERIPH_B, 0); /* TXD */
574} 566}
575 567
576static inline void configure_usart1_pins(void) 568static inline void configure_usart1_pins(void)
577{ 569{
578 portmux_set_func(PIOA, 17, FUNC_A); /* RXD */ 570 select_peripheral(PA(17), PERIPH_A, 0); /* RXD */
579 portmux_set_func(PIOA, 18, FUNC_A); /* TXD */ 571 select_peripheral(PA(18), PERIPH_A, 0); /* TXD */
580} 572}
581 573
582static inline void configure_usart2_pins(void) 574static inline void configure_usart2_pins(void)
583{ 575{
584 portmux_set_func(PIOB, 26, FUNC_B); /* RXD */ 576 select_peripheral(PB(26), PERIPH_B, 0); /* RXD */
585 portmux_set_func(PIOB, 27, FUNC_B); /* TXD */ 577 select_peripheral(PB(27), PERIPH_B, 0); /* TXD */
586} 578}
587 579
588static inline void configure_usart3_pins(void) 580static inline void configure_usart3_pins(void)
589{ 581{
590 portmux_set_func(PIOB, 18, FUNC_B); /* RXD */ 582 select_peripheral(PB(18), PERIPH_B, 0); /* RXD */
591 portmux_set_func(PIOB, 17, FUNC_B); /* TXD */ 583 select_peripheral(PB(17), PERIPH_B, 0); /* TXD */
592} 584}
593 585
594static struct platform_device *at32_usarts[4]; 586static struct platform_device *at32_usarts[4];
@@ -663,27 +655,27 @@ at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
663 case 0: 655 case 0:
664 pdev = &macb0_device; 656 pdev = &macb0_device;
665 657
666 portmux_set_func(PIOC, 3, FUNC_A); /* TXD0 */ 658 select_peripheral(PC(3), PERIPH_A, 0); /* TXD0 */
667 portmux_set_func(PIOC, 4, FUNC_A); /* TXD1 */ 659 select_peripheral(PC(4), PERIPH_A, 0); /* TXD1 */
668 portmux_set_func(PIOC, 7, FUNC_A); /* TXEN */ 660 select_peripheral(PC(7), PERIPH_A, 0); /* TXEN */
669 portmux_set_func(PIOC, 8, FUNC_A); /* TXCK */ 661 select_peripheral(PC(8), PERIPH_A, 0); /* TXCK */
670 portmux_set_func(PIOC, 9, FUNC_A); /* RXD0 */ 662 select_peripheral(PC(9), PERIPH_A, 0); /* RXD0 */
671 portmux_set_func(PIOC, 10, FUNC_A); /* RXD1 */ 663 select_peripheral(PC(10), PERIPH_A, 0); /* RXD1 */
672 portmux_set_func(PIOC, 13, FUNC_A); /* RXER */ 664 select_peripheral(PC(13), PERIPH_A, 0); /* RXER */
673 portmux_set_func(PIOC, 15, FUNC_A); /* RXDV */ 665 select_peripheral(PC(15), PERIPH_A, 0); /* RXDV */
674 portmux_set_func(PIOC, 16, FUNC_A); /* MDC */ 666 select_peripheral(PC(16), PERIPH_A, 0); /* MDC */
675 portmux_set_func(PIOC, 17, FUNC_A); /* MDIO */ 667 select_peripheral(PC(17), PERIPH_A, 0); /* MDIO */
676 668
677 if (!data->is_rmii) { 669 if (!data->is_rmii) {
678 portmux_set_func(PIOC, 0, FUNC_A); /* COL */ 670 select_peripheral(PC(0), PERIPH_A, 0); /* COL */
679 portmux_set_func(PIOC, 1, FUNC_A); /* CRS */ 671 select_peripheral(PC(1), PERIPH_A, 0); /* CRS */
680 portmux_set_func(PIOC, 2, FUNC_A); /* TXER */ 672 select_peripheral(PC(2), PERIPH_A, 0); /* TXER */
681 portmux_set_func(PIOC, 5, FUNC_A); /* TXD2 */ 673 select_peripheral(PC(5), PERIPH_A, 0); /* TXD2 */
682 portmux_set_func(PIOC, 6, FUNC_A); /* TXD3 */ 674 select_peripheral(PC(6), PERIPH_A, 0); /* TXD3 */
683 portmux_set_func(PIOC, 11, FUNC_A); /* RXD2 */ 675 select_peripheral(PC(11), PERIPH_A, 0); /* RXD2 */
684 portmux_set_func(PIOC, 12, FUNC_A); /* RXD3 */ 676 select_peripheral(PC(12), PERIPH_A, 0); /* RXD3 */
685 portmux_set_func(PIOC, 14, FUNC_A); /* RXCK */ 677 select_peripheral(PC(14), PERIPH_A, 0); /* RXCK */
686 portmux_set_func(PIOC, 18, FUNC_A); /* SPD */ 678 select_peripheral(PC(18), PERIPH_A, 0); /* SPD */
687 } 679 }
688 break; 680 break;
689 681
@@ -714,12 +706,12 @@ struct platform_device *__init at32_add_device_spi(unsigned int id)
714 switch (id) { 706 switch (id) {
715 case 0: 707 case 0:
716 pdev = &spi0_device; 708 pdev = &spi0_device;
717 portmux_set_func(PIOA, 0, FUNC_A); /* MISO */ 709 select_peripheral(PA(0), PERIPH_A, 0); /* MISO */
718 portmux_set_func(PIOA, 1, FUNC_A); /* MOSI */ 710 select_peripheral(PA(1), PERIPH_A, 0); /* MOSI */
719 portmux_set_func(PIOA, 2, FUNC_A); /* SCK */ 711 select_peripheral(PA(2), PERIPH_A, 0); /* SCK */
720 portmux_set_func(PIOA, 3, FUNC_A); /* NPCS0 */ 712 select_peripheral(PA(3), PERIPH_A, 0); /* NPCS0 */
721 portmux_set_func(PIOA, 4, FUNC_A); /* NPCS1 */ 713 select_peripheral(PA(4), PERIPH_A, 0); /* NPCS1 */
722 portmux_set_func(PIOA, 5, FUNC_A); /* NPCS2 */ 714 select_peripheral(PA(5), PERIPH_A, 0); /* NPCS2 */
723 break; 715 break;
724 716
725 default: 717 default:
@@ -762,37 +754,37 @@ at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
762 switch (id) { 754 switch (id) {
763 case 0: 755 case 0:
764 pdev = &lcdc0_device; 756 pdev = &lcdc0_device;
765 portmux_set_func(PIOC, 19, FUNC_A); /* CC */ 757 select_peripheral(PC(19), PERIPH_A, 0); /* CC */
766 portmux_set_func(PIOC, 20, FUNC_A); /* HSYNC */ 758 select_peripheral(PC(20), PERIPH_A, 0); /* HSYNC */
767 portmux_set_func(PIOC, 21, FUNC_A); /* PCLK */ 759 select_peripheral(PC(21), PERIPH_A, 0); /* PCLK */
768 portmux_set_func(PIOC, 22, FUNC_A); /* VSYNC */ 760 select_peripheral(PC(22), PERIPH_A, 0); /* VSYNC */
769 portmux_set_func(PIOC, 23, FUNC_A); /* DVAL */ 761 select_peripheral(PC(23), PERIPH_A, 0); /* DVAL */
770 portmux_set_func(PIOC, 24, FUNC_A); /* MODE */ 762 select_peripheral(PC(24), PERIPH_A, 0); /* MODE */
771 portmux_set_func(PIOC, 25, FUNC_A); /* PWR */ 763 select_peripheral(PC(25), PERIPH_A, 0); /* PWR */
772 portmux_set_func(PIOC, 26, FUNC_A); /* DATA0 */ 764 select_peripheral(PC(26), PERIPH_A, 0); /* DATA0 */
773 portmux_set_func(PIOC, 27, FUNC_A); /* DATA1 */ 765 select_peripheral(PC(27), PERIPH_A, 0); /* DATA1 */
774 portmux_set_func(PIOC, 28, FUNC_A); /* DATA2 */ 766 select_peripheral(PC(28), PERIPH_A, 0); /* DATA2 */
775 portmux_set_func(PIOC, 29, FUNC_A); /* DATA3 */ 767 select_peripheral(PC(29), PERIPH_A, 0); /* DATA3 */
776 portmux_set_func(PIOC, 30, FUNC_A); /* DATA4 */ 768 select_peripheral(PC(30), PERIPH_A, 0); /* DATA4 */
777 portmux_set_func(PIOC, 31, FUNC_A); /* DATA5 */ 769 select_peripheral(PC(31), PERIPH_A, 0); /* DATA5 */
778 portmux_set_func(PIOD, 0, FUNC_A); /* DATA6 */ 770 select_peripheral(PD(0), PERIPH_A, 0); /* DATA6 */
779 portmux_set_func(PIOD, 1, FUNC_A); /* DATA7 */ 771 select_peripheral(PD(1), PERIPH_A, 0); /* DATA7 */
780 portmux_set_func(PIOD, 2, FUNC_A); /* DATA8 */ 772 select_peripheral(PD(2), PERIPH_A, 0); /* DATA8 */
781 portmux_set_func(PIOD, 3, FUNC_A); /* DATA9 */ 773 select_peripheral(PD(3), PERIPH_A, 0); /* DATA9 */
782 portmux_set_func(PIOD, 4, FUNC_A); /* DATA10 */ 774 select_peripheral(PD(4), PERIPH_A, 0); /* DATA10 */
783 portmux_set_func(PIOD, 5, FUNC_A); /* DATA11 */ 775 select_peripheral(PD(5), PERIPH_A, 0); /* DATA11 */
784 portmux_set_func(PIOD, 6, FUNC_A); /* DATA12 */ 776 select_peripheral(PD(6), PERIPH_A, 0); /* DATA12 */
785 portmux_set_func(PIOD, 7, FUNC_A); /* DATA13 */ 777 select_peripheral(PD(7), PERIPH_A, 0); /* DATA13 */
786 portmux_set_func(PIOD, 8, FUNC_A); /* DATA14 */ 778 select_peripheral(PD(8), PERIPH_A, 0); /* DATA14 */
787 portmux_set_func(PIOD, 9, FUNC_A); /* DATA15 */ 779 select_peripheral(PD(9), PERIPH_A, 0); /* DATA15 */
788 portmux_set_func(PIOD, 10, FUNC_A); /* DATA16 */ 780 select_peripheral(PD(10), PERIPH_A, 0); /* DATA16 */
789 portmux_set_func(PIOD, 11, FUNC_A); /* DATA17 */ 781 select_peripheral(PD(11), PERIPH_A, 0); /* DATA17 */
790 portmux_set_func(PIOD, 12, FUNC_A); /* DATA18 */ 782 select_peripheral(PD(12), PERIPH_A, 0); /* DATA18 */
791 portmux_set_func(PIOD, 13, FUNC_A); /* DATA19 */ 783 select_peripheral(PD(13), PERIPH_A, 0); /* DATA19 */
792 portmux_set_func(PIOD, 14, FUNC_A); /* DATA20 */ 784 select_peripheral(PD(14), PERIPH_A, 0); /* DATA20 */
793 portmux_set_func(PIOD, 15, FUNC_A); /* DATA21 */ 785 select_peripheral(PD(15), PERIPH_A, 0); /* DATA21 */
794 portmux_set_func(PIOD, 16, FUNC_A); /* DATA22 */ 786 select_peripheral(PD(16), PERIPH_A, 0); /* DATA22 */
795 portmux_set_func(PIOD, 17, FUNC_A); /* DATA23 */ 787 select_peripheral(PD(17), PERIPH_A, 0); /* DATA23 */
796 788
797 clk_set_parent(&lcdc0_pixclk, &pll0); 789 clk_set_parent(&lcdc0_pixclk, &pll0);
798 clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0)); 790 clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
index d3aabfca8598..f1280ed8ed6d 100644
--- a/arch/avr32/mach-at32ap/pio.c
+++ b/arch/avr32/mach-at32ap/pio.c
@@ -25,27 +25,98 @@ struct pio_device {
25 void __iomem *regs; 25 void __iomem *regs;
26 const struct platform_device *pdev; 26 const struct platform_device *pdev;
27 struct clk *clk; 27 struct clk *clk;
28 u32 alloc_mask; 28 u32 pinmux_mask;
29 char name[32]; 29 char name[32];
30}; 30};
31 31
32static struct pio_device pio_dev[MAX_NR_PIO_DEVICES]; 32static struct pio_device pio_dev[MAX_NR_PIO_DEVICES];
33 33
34void portmux_set_func(unsigned int portmux_id, unsigned int pin_id, 34static struct pio_device *gpio_to_pio(unsigned int gpio)
35 unsigned int function_id)
36{ 35{
37 struct pio_device *pio; 36 struct pio_device *pio;
38 u32 mask = 1 << pin_id; 37 unsigned int index;
39 38
40 BUG_ON(portmux_id >= MAX_NR_PIO_DEVICES); 39 index = gpio >> 5;
40 if (index >= MAX_NR_PIO_DEVICES)
41 return NULL;
42 pio = &pio_dev[index];
43 if (!pio->regs)
44 return NULL;
41 45
42 pio = &pio_dev[portmux_id]; 46 return pio;
47}
48
49/* Pin multiplexing API */
50
51void __init at32_select_periph(unsigned int pin, unsigned int periph,
52 unsigned long flags)
53{
54 struct pio_device *pio;
55 unsigned int pin_index = pin & 0x1f;
56 u32 mask = 1 << pin_index;
57
58 pio = gpio_to_pio(pin);
59 if (unlikely(!pio)) {
60 printk("pio: invalid pin %u\n", pin);
61 goto fail;
62 }
43 63
44 if (function_id) 64 if (unlikely(test_and_set_bit(pin_index, &pio->pinmux_mask))) {
65 printk("%s: pin %u is busy\n", pio->name, pin_index);
66 goto fail;
67 }
68
69 pio_writel(pio, PUER, mask);
70 if (periph)
45 pio_writel(pio, BSR, mask); 71 pio_writel(pio, BSR, mask);
46 else 72 else
47 pio_writel(pio, ASR, mask); 73 pio_writel(pio, ASR, mask);
74
48 pio_writel(pio, PDR, mask); 75 pio_writel(pio, PDR, mask);
76 if (!(flags & AT32_GPIOF_PULLUP))
77 pio_writel(pio, PUDR, mask);
78
79 return;
80
81fail:
82 dump_stack();
83}
84
85void __init at32_select_gpio(unsigned int pin, unsigned long flags)
86{
87 struct pio_device *pio;
88 unsigned int pin_index = pin & 0x1f;
89 u32 mask = 1 << pin_index;
90
91 pio = gpio_to_pio(pin);
92 if (unlikely(!pio)) {
93 printk("pio: invalid pin %u\n", pin);
94 goto fail;
95 }
96
97 if (unlikely(test_and_set_bit(pin_index, &pio->pinmux_mask))) {
98 printk("%s: pin %u is busy\n", pio->name, pin_index);
99 goto fail;
100 }
101
102 pio_writel(pio, PUER, mask);
103 if (flags & AT32_GPIOF_HIGH)
104 pio_writel(pio, SODR, mask);
105 else
106 pio_writel(pio, CODR, mask);
107 if (flags & AT32_GPIOF_OUTPUT)
108 pio_writel(pio, OER, mask);
109 else
110 pio_writel(pio, ODR, mask);
111
112 pio_writel(pio, PER, mask);
113 if (!(flags & AT32_GPIOF_PULLUP))
114 pio_writel(pio, PUDR, mask);
115
116 return;
117
118fail:
119 dump_stack();
49} 120}
50 121
51static int __init pio_probe(struct platform_device *pdev) 122static int __init pio_probe(struct platform_device *pdev)
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-15 06:26:22 -0400