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atsam: Add support for SAM E70

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Signed-off-by: Alex Maclean <monkeh@monkeh.net>
This commit is contained in:
Alex Maclean
2021-08-18 20:01:59 +01:00
committed by Kevin O'Connor
parent 99c2bf0ded
commit 8049243221
18 changed files with 440 additions and 82 deletions
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27
src/atsam/gpio.c
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@@ -11,6 +11,11 @@
#include "internal.h" // gpio_peripheral
#include "sched.h" // sched_shutdown
struct gpio_info {
void *dev;
uint8_t dev_id;
};
DECL_ENUMERATION_RANGE("pin", "PA0", GPIO('A', 0), 32);
DECL_ENUMERATION_RANGE("pin", "PB0", GPIO('B', 0), 32);
#ifdef PIOC
@@ -23,16 +28,17 @@ DECL_ENUMERATION_RANGE("pin", "PD0", GPIO('D', 0), 32);
DECL_ENUMERATION_RANGE("pin", "PE0", GPIO('E', 0), 32);
#endif
static Pio * const digital_regs[] = {
PIOA, PIOB,
static const struct gpio_info digital_regs[] = {
{ PIOA, ID_PIOA },
{ PIOB, ID_PIOB },
#ifdef PIOC
PIOC,
{ PIOC, ID_PIOC },
#endif
#ifdef PIOD
PIOD,
{ PIOD, ID_PIOD },
#endif
#ifdef PIOE
PIOE,
{ PIOE, ID_PIOE },
#endif
};
@@ -65,6 +71,9 @@ set_pull_up(Pio *regs, uint32_t bit, int32_t pull_up)
// Check if this pin is a "system IO pin" and disable if so
if (regs == PIOB && (bit & 0x1cf0))
MATRIX->CCFG_SYSIO |= bit;
#elif CONFIG_MACH_SAME70
if (regs == PIOB && (bit & 0x10f0))
MATRIX->CCFG_SYSIO |= bit;
#endif
}
@@ -72,7 +81,7 @@ void
gpio_peripheral(uint32_t gpio, char ptype, int32_t pull_up)
{
uint32_t bank = GPIO2PORT(gpio), bit = GPIO2BIT(gpio), pt = ptype - 'A';
Pio *regs = digital_regs[bank];
Pio *regs = digital_regs[bank].dev;
#if CONFIG_MACH_SAM3X
regs->PIO_ABSR = (regs->PIO_ABSR & ~bit) | (pt & 0x01 ? bit : 0);
@@ -94,7 +103,7 @@ gpio_out_setup(uint8_t pin, uint8_t val)
{
if (GPIO2PORT(pin) >= ARRAY_SIZE(digital_regs))
goto fail;
Pio *regs = digital_regs[GPIO2PORT(pin)];
Pio *regs = digital_regs[GPIO2PORT(pin)].dev;
struct gpio_out g = { .regs=regs, .bit=GPIO2BIT(pin) };
gpio_out_reset(g, val);
return g;
@@ -152,8 +161,8 @@ gpio_in_setup(uint8_t pin, int8_t pull_up)
if (CONFIG_MACH_SAM3X && pull_up < 0)
goto fail;
uint32_t port = GPIO2PORT(pin);
enable_pclock(ID_PIOA + port);
struct gpio_in g = { .regs=digital_regs[port], .bit=GPIO2BIT(pin) };
enable_pclock(digital_regs[port].dev_id);
struct gpio_in g = { .regs=digital_regs[port].dev, .bit=GPIO2BIT(pin) };
gpio_in_reset(g, pull_up);
return g;
fail: