src: Rename source folders for atsam and atsamd architectures

Signed-off-by: Florian Heilmann <Florian.Heilmann@gmx.net>

1 files changed, 0 insertions, 92 deletions

diff --git a/src/samd21/spi.c b/src/samd21/spi.c
deleted file mode 100644
index 12c7d680..00000000
--- a/src/samd21/spi.c
+++ /dev/null
@@ -1,92 +0,0 @@
-// spi support on samd21
-//
-// Copyright (C) 2018  Kevin O'Connor <kevin@koconnor.net>
-//
-// This file may be distributed under the terms of the GNU GPLv3 license.
-
-#include "autoconf.h" // CONFIG_CLOCK_FREQ
-#include "internal.h" // enable_pclock
-#include "command.h" // shutdown
-#include "gpio.h" // spi_setup
-#include "samd21.h" // SERCOM4
-#include "sched.h" // sched_shutdown
-
-static void
-spi_init(uint32_t ctrla, uint32_t baud)
-{
-    static int have_run_init;
-    if (have_run_init)
-        return;
-    have_run_init = 1;
-
-    // Setup clock
-    enable_pclock(SERCOM4_GCLK_ID_CORE, PM_APBCMASK_SERCOM4);
-
-    // Configure MISO, MOSI, SCK pins
-    gpio_peripheral(GPIO('A', 12), 'D', 0);
-    gpio_peripheral(GPIO('B', 10), 'D', 0);
-    gpio_peripheral(GPIO('B', 11), 'D', 0);
-
-    // Configure spi
-    SercomSpi *ss = &SERCOM4->SPI;
-    ss->CTRLA.reg = 0;
-    ss->CTRLA.reg = ctrla & ~SERCOM_SPI_CTRLA_ENABLE;
-    ss->CTRLB.reg = SERCOM_SPI_CTRLB_RXEN;
-    ss->BAUD.reg = baud;
-    ss->CTRLA.reg = ctrla;
-}
-
-struct spi_config
-spi_setup(uint32_t bus, uint8_t mode, uint32_t rate)
-{
-    if (bus)
-        shutdown("Invalid spi bus");
-
-    uint32_t ctrla = (SERCOM_SPI_CTRLA_MODE_SPI_MASTER
-                      | (mode << SERCOM_SPI_CTRLA_CPHA_Pos)
-                      | SERCOM_SPI_CTRLA_DIPO(0)
-                      | SERCOM_SPI_CTRLA_DOPO(1)
-                      | SERCOM_SPI_CTRLA_ENABLE);
-    uint32_t baud = CONFIG_CLOCK_FREQ / (2 * rate) - 1;
-    spi_init(ctrla, baud);
-    return (struct spi_config){ .ctrla = ctrla, .baud = baud };
-}
-
-void
-spi_prepare(struct spi_config config)
-{
-    uint32_t ctrla = config.ctrla, baud = config.baud;
-    SercomSpi *ss = &SERCOM4->SPI;
-    if (ctrla == ss->CTRLA.reg && baud == ss->BAUD.reg)
-        return;
-    ss->CTRLA.reg = ctrla & ~SERCOM_SPI_CTRLA_ENABLE;
-    ss->CTRLA.reg = ctrla & ~SERCOM_SPI_CTRLA_ENABLE;
-    ss->BAUD.reg = baud;
-    ss->CTRLA.reg = ctrla;
-}
-
-void
-spi_transfer(struct spi_config config, uint8_t receive_data
-             , uint8_t len, uint8_t *data)
-{
-    SercomSpi *ss = &SERCOM4->SPI;
-    if (receive_data) {
-        while (len--) {
-            ss->DATA.reg = *data;
-            // wait for receive register
-            while (!(ss->INTFLAG.reg & SERCOM_SPI_INTFLAG_RXC))
-                ;
-            // get data
-            *data++ = ss->DATA.reg;
-        }
-    } else {
-        while (len--) {
-            ss->DATA.reg = *data++;
-            // wait for receive register
-            while (!(ss->INTFLAG.reg & SERCOM_SPI_INTFLAG_RXC))
-                ;
-            // read data (to clear RXC)
-            ss->DATA.reg;
-        }
-    }
-}