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-rw-r--r--io-module/spi.c767
1 files changed, 767 insertions, 0 deletions
diff --git a/io-module/spi.c b/io-module/spi.c
new file mode 100644
index 0000000..2da3f05
--- /dev/null
+++ b/io-module/spi.c
@@ -0,0 +1,767 @@
+/* SPI devices, functions, and attributes */
+
+static int ADT7302_to_celsius(int value)
+{
+ if (value & 0x2000) {
+ value = value - 16384;
+ }
+
+ value = value / 32 + 1 * ((value % 32) >= 16);
+
+ return value;
+}
+
+/* SPI Devices */
+static struct spi_device *spi_sout_dev;
+static u8 spi_sout_value;
+static DEFINE_MUTEX(spi_sout_mutex);
+static unsigned int sout_max_speed_hz = 1 * 1000 * 1000;
+module_param(sout_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ sout_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+static struct spi_device *spi_dout_dev;
+static u8 spi_dout_value;
+static DEFINE_MUTEX(spi_dout_mutex);
+static unsigned int dout_max_speed_hz = 1 * 1000 * 1000;
+module_param(dout_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ dout_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+static struct spi_device *spi_din_dev;
+static unsigned int din_max_speed_hz = 1 * 1000 * 1000;
+module_param(din_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ din_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+static struct spi_device *spi_dc_dout_dev;
+static u8 spi_dc_dout_value;
+static DEFINE_MUTEX(spi_dc_dout_mutex);
+static unsigned int dc_dout_max_speed_hz = 1 * 1000 * 1000;
+module_param(dc_dout_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ dc_dout_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+static struct spi_device *spi_dc_din_dev;
+static unsigned int dc_din_max_speed_hz = 1 * 1000 * 1000;
+module_param(dc_din_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ dc_din_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+static struct spi_device *spi_dc_adc_dev;
+static unsigned int dc_adc_max_speed_hz = 20 * 1000 * 1000;
+module_param(dc_adc_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ dc_adc_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 20 MHz)"
+);
+
+static struct spi_device *spi_board_temp_dev;
+static unsigned int board_temp_max_speed_hz = 1 * 1000 * 1000;
+module_param(board_temp_max_speed_hz, uint, S_IRUGO);
+MODULE_PARM_DESC(
+ board_temp_max_speed_hz,
+ "Maximum clock rate to be used with this device (default: 1 MHz)"
+);
+
+/* Generic SPI functions */
+static inline int spi_writen(struct spi_device *spi, const u8 *buf, size_t len)
+{
+ int tmp;
+ u8 *tx;
+
+ tx = kmalloc(len, GFP_KERNEL);
+ if (!tx) {
+ return -ENOMEM;
+ }
+
+ memcpy(tx, buf, len);
+ tmp = spi_write(spi, tx, len);
+
+ kfree(tx);
+
+ return tmp;
+}
+
+static inline int spi_readn(struct spi_device *spi, u8 *buf, size_t len)
+{
+ int tmp;
+ u8 *rx;
+
+ rx = kmalloc(len, GFP_KERNEL);
+ if (!rx) {
+ return -ENOMEM;
+ }
+
+ tmp = spi_read(spi, rx, len);
+ memcpy(buf, rx, len);
+
+ kfree(rx);
+
+ return tmp;
+}
+
+/* ----------------------------------------------------------------------------
+ *
+ * SPI-based attribute show/store functions
+ *
+ * ----------------------------------------------------------------------------
+*/
+
+#define SOUT_LED_CD_BIT BIT(0)
+#define SOUT_EXTSERIAL_RI_BIT BIT(1)
+#define SOUT_EXTSERIAL_DSR_BIT BIT(2)
+#define SOUT_LED_DTR BIT(3)
+#define SOUT_LED_SIG1_BIT BIT(4)
+#define SOUT_LED_SIG2_BIT BIT(5)
+#define SOUT_LED_SIG3_BIT BIT(6)
+#define SOUT_EXTSERIAL_DCD_BIT BIT(7)
+
+static ssize_t mts_attr_store_sout(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int value;
+ u8 bit;
+
+ if (!spi_sout_dev) {
+ log_notice("sout device not present");
+ return -ENODEV;
+ }
+
+ if (!strcmp(attr->attr.name, "extserial-ri")) {
+ bit = SOUT_EXTSERIAL_RI_BIT;
+ } else if (!strcmp(attr->attr.name, "extserial-dsr")) {
+ bit = SOUT_EXTSERIAL_DSR_BIT;
+ } else if (!strcmp(attr->attr.name, "extserial-dcd")) {
+ bit = SOUT_EXTSERIAL_DCD_BIT;
+ } else if (!strcmp(attr->attr.name, "led-cd") ||
+ !strcmp(attr->attr.name, "led-sdk-b")) {
+ bit = SOUT_LED_CD_BIT;
+ } else if (!strcmp(attr->attr.name, "led-dtr") ||
+ !strcmp(attr->attr.name, "led-sdk-f")) {
+ bit = SOUT_LED_DTR;
+ } else if (!strcmp(attr->attr.name, "led-sig1") ||
+ !strcmp(attr->attr.name, "led-sdk-c")) {
+ bit = SOUT_LED_SIG1_BIT;
+ } else if (!strcmp(attr->attr.name, "led-sig2") ||
+ !strcmp(attr->attr.name, "led-sdk-d")) {
+ bit = SOUT_LED_SIG2_BIT;
+ } else if (!strcmp(attr->attr.name, "led-sig3") ||
+ !strcmp(attr->attr.name, "led-sdk-e")) {
+ bit = SOUT_LED_SIG3_BIT;
+ } else {
+ log_notice("sout attr does not exist");
+ return -ENOENT;
+ }
+
+ if (sscanf(buf, "%i", &value) != 1) {
+ log_notice("sout attr invalid argument");
+ return -EINVAL;
+ }
+
+ mutex_lock(&spi_sout_mutex);
+
+ if (value) {
+ spi_sout_value &= ~bit;
+ } else {
+ spi_sout_value |= bit;
+ }
+ spi_writen(spi_sout_dev, &spi_sout_value, 1);
+
+ mutex_unlock(&spi_sout_mutex);
+
+ return count;
+}
+
+static ssize_t mts_attr_show_sout(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int value;
+ u8 bit;
+
+ if (!spi_sout_dev) {
+ log_error("sout device not present");
+ return -ENODEV;
+ }
+
+ if (!strcmp(attr->attr.name, "extserial-ri")) {
+ bit = SOUT_EXTSERIAL_RI_BIT;
+ } else if (!strcmp(attr->attr.name, "extserial-dsr")) {
+ bit = SOUT_EXTSERIAL_DSR_BIT;
+ } else if (!strcmp(attr->attr.name, "extserial-dcd")) {
+ bit = SOUT_EXTSERIAL_DCD_BIT;
+ } else if (!strcmp(attr->attr.name, "led-cd") ||
+ !strcmp(attr->attr.name, "led-sdk-b")) {
+ bit = SOUT_LED_CD_BIT;
+ } else if (!strcmp(attr->attr.name, "led-dtr") ||
+ !strcmp(attr->attr.name, "led-sdk-f")) {
+ bit = SOUT_LED_DTR;
+ } else if (!strcmp(attr->attr.name, "led-sig1") ||
+ !strcmp(attr->attr.name, "led-sdk-c")) {
+ bit = SOUT_LED_SIG1_BIT;
+ } else if (!strcmp(attr->attr.name, "led-sig2") ||
+ !strcmp(attr->attr.name, "led-sdk-d")) {
+ bit = SOUT_LED_SIG2_BIT;
+ } else if (!strcmp(attr->attr.name, "led-sig3") ||
+ !strcmp(attr->attr.name, "led-sdk-e")) {
+ bit = SOUT_LED_SIG3_BIT;
+ } else {
+ log_notice("sout attr does not exist");
+ return -ENOENT;
+ }
+
+ mutex_lock(&spi_sout_mutex);
+
+ value = spi_sout_value & bit ? 0 : 1;
+
+ mutex_unlock(&spi_sout_mutex);
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t mts_attr_store_dout(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int value;
+ u8 bit;
+
+ if (!spi_dout_dev) {
+ log_notice("dout device not present");
+ return -ENODEV;
+ }
+
+ if ((!strcmp(attr->attr.name, "dout0")) || (!strcmp(attr->attr.name, "gpo1"))) {
+ bit = BIT(0);
+ } else if ((!strcmp(attr->attr.name, "dout1")) || (!strcmp(attr->attr.name, "gpo2"))) {
+ bit = BIT(1);
+ } else if ((!strcmp(attr->attr.name, "dout2")) || (!strcmp(attr->attr.name, "gpo3"))) {
+ bit = BIT(2);
+ } else if ((!strcmp(attr->attr.name, "dout3")) || (!strcmp(attr->attr.name, "gpo4"))) {
+ bit = BIT(3);
+ } else if ((!strcmp(attr->attr.name, "dout4")) || (!strcmp(attr->attr.name, "led1"))) {
+ bit = BIT(4);
+ } else if ((!strcmp(attr->attr.name, "dout5")) || (!strcmp(attr->attr.name, "led4"))) {
+ bit = BIT(5);
+ } else if ((!strcmp(attr->attr.name, "dout6")) || (!strcmp(attr->attr.name, "led5"))) {
+ bit = BIT(6);
+ } else if ((!strcmp(attr->attr.name, "dout7")) || (!strcmp(attr->attr.name, "led6"))) {
+ bit = BIT(7);
+ } else {
+ log_notice("dout attr does not exist");
+ return -ENOENT;
+ }
+
+ if (sscanf(buf, "%i", &value) != 1) {
+ log_notice("dout attr invalid argument");
+ return -EINVAL;
+ }
+
+ mutex_lock(&spi_dout_mutex);
+
+ if (value) {
+ spi_dout_value &= ~bit;
+ } else {
+ spi_dout_value |= bit;
+ }
+
+ spi_writen(spi_dout_dev, &spi_dout_value, 1);
+
+ mutex_unlock(&spi_dout_mutex);
+
+ return count;
+}
+
+static ssize_t mts_attr_show_dout(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int value;
+ u8 bit;
+
+ if (!spi_dout_dev) {
+ log_error("dout device not present");
+ return -ENODEV;
+ }
+
+ if ((!strcmp(attr->attr.name, "dout0")) || (!strcmp(attr->attr.name, "gpo1"))) {
+ bit = BIT(0);
+ } else if ((!strcmp(attr->attr.name, "dout1")) || (!strcmp(attr->attr.name, "gpo2"))) {
+ bit = BIT(1);
+ } else if ((!strcmp(attr->attr.name, "dout2")) || (!strcmp(attr->attr.name, "gpo3"))) {
+ bit = BIT(2);
+ } else if ((!strcmp(attr->attr.name, "dout3")) || (!strcmp(attr->attr.name, "gpo4"))) {
+ bit = BIT(3);
+ } else if ((!strcmp(attr->attr.name, "dout4")) || (!strcmp(attr->attr.name, "led1"))) {
+ bit = BIT(4);
+ } else if ((!strcmp(attr->attr.name, "dout5")) || (!strcmp(attr->attr.name, "led4"))) {
+ bit = BIT(5);
+ } else if ((!strcmp(attr->attr.name, "dout6")) || (!strcmp(attr->attr.name, "led5"))) {
+ bit = BIT(6);
+ } else if ((!strcmp(attr->attr.name, "dout7")) || (!strcmp(attr->attr.name, "led6"))) {
+ bit = BIT(7);
+ } else {
+ log_notice("dout attr does not exist");
+ return -ENOENT;
+ }
+
+ mutex_lock(&spi_dout_mutex);
+
+ value = spi_dout_value & bit ? 0 : 1;
+
+ mutex_unlock(&spi_dout_mutex);
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t mts_attr_show_din(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int tmp;
+ u8 bit;
+ u8 byte;
+
+ if (!spi_din_dev) {
+ log_error("din device not present");
+ return -ENODEV;
+ }
+
+ if ((!strcmp(attr->attr.name, "din0")) || (!strcmp(attr->attr.name, "gpi5"))) {
+ bit = BIT(0);
+ } else if ((!strcmp(attr->attr.name, "din1")) || (!strcmp(attr->attr.name, "gpi6"))) {
+ bit = BIT(1);
+ } else if ((!strcmp(attr->attr.name, "din2")) || (!strcmp(attr->attr.name, "gpi7"))) {
+ bit = BIT(2);
+ } else if ((!strcmp(attr->attr.name, "din3")) || (!strcmp(attr->attr.name, "gpi8"))) {
+ bit = BIT(3);
+ } else if ((!strcmp(attr->attr.name, "din4")) || (!strcmp(attr->attr.name, "gpi9"))) {
+ bit = BIT(4);
+ } else if ((!strcmp(attr->attr.name, "din5")) || (!strcmp(attr->attr.name, "gpi10"))) {
+ bit = BIT(5);
+ } else if (!strcmp(attr->attr.name, "din6")) {
+ bit = BIT(6);
+ } else if (!strcmp(attr->attr.name, "din7")) {
+ bit = BIT(7);
+ } else {
+ log_notice("din attr does not exist");
+ return -ENOENT;
+ }
+
+ tmp = spi_readn(spi_din_dev, &byte, 1);
+ if (tmp) {
+ log_error("spi_read failed %d", tmp);
+ return tmp;
+ }
+
+ tmp = byte & bit ? 1 : 0;
+
+ return sprintf(buf, "%d\n", tmp);
+}
+
+static ssize_t mts_attr_show_board_temperature(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int tmp;
+ u16 temp_raw;
+
+ if (!spi_board_temp_dev) {
+ log_notice("spi_board_temp device not present");
+ return -ENODEV;
+ }
+
+ tmp = spi_readn(spi_board_temp_dev, (u8 *) buf, 2);
+ if (tmp) {
+ log_error("spi_readn failed %d", tmp);
+ return tmp;
+ }
+ temp_raw = ((u8 *) buf)[0] << 8 | ((u8 *) buf)[1];
+
+ log_debug("temp: 0x%04X", temp_raw);
+
+ return sprintf(buf, "%d\n", ADT7302_to_celsius(temp_raw));
+}
+
+/* ----------------------------------------------------------------------------
+ *
+ * SPI-based attributes
+ *
+ * ----------------------------------------------------------------------------
+*/
+
+static DEVICE_ATTR_RO_MTS(dev_attr_board_temperature, "board-temperature",
+ mts_attr_show_board_temperature);
+
+static DEVICE_ATTR_MTS(dev_attr_extserial_dcd, "extserial-dcd",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_extserial_ri, "extserial-ri",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_extserial_dsr, "extserial-dsr",
+ mts_attr_show_sout, mts_attr_store_sout);
+
+static DEVICE_ATTR_MTS(dev_attr_led_cd, "led-cd",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sdk_b, "led-sdk-b",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sig1, "led-sig1",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sdk_c, "led-sdk-c",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sig2, "led-sig2",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sdk_d, "led-sdk-d",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sig3, "led-sig3",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sdk_e, "led-sdk-e",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_dtr, "led-dtr",
+ mts_attr_show_sout, mts_attr_store_sout);
+static DEVICE_ATTR_MTS(dev_attr_led_sdk_f, "led-sdk-f",
+ mts_attr_show_sout, mts_attr_store_sout);
+
+static DEVICE_ATTR_MTS(dev_attr_dout0, "dout0",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout1, "dout1",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout2, "dout2",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout3, "dout3",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout4, "dout4",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout5, "dout5",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout6, "dout6",
+ mts_attr_show_dout, mts_attr_store_dout);
+static DEVICE_ATTR_MTS(dev_attr_dout7, "dout7",
+ mts_attr_show_dout, mts_attr_store_dout);
+
+static DEVICE_ATTR_RO_MTS(dev_attr_din0, "din0", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din1, "din1", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din2, "din2", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din3, "din3", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din4, "din4", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din5, "din5", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din6, "din6", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_din7, "din7", mts_attr_show_din);
+
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi5, "gpi5", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi6, "gpi6", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi7, "gpi7", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi8, "gpi8", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi9, "gpi9", mts_attr_show_din);
+static DEVICE_ATTR_RO_MTS(dev_attr_gpi10, "gpi10", mts_attr_show_din);
+
+/* SPI driver setup */
+static int mts_spi_sout_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ spi->max_speed_hz = sout_max_speed_hz;
+ spi->mode = 0;
+
+ log_debug("sout_max_speed_hz: %d", sout_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup sout failed");
+ return tmp;
+ }
+
+ spi_sout_value = 0xFF;
+ spi_writen(spi, &spi_sout_value, 1);
+
+ spi_sout_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_sout_remove(struct spi_device *spi)
+{
+ spi_sout_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_sout_driver = {
+ .driver = {
+ .name = "mts-io-sout",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_sout_probe,
+ .remove = mts_spi_sout_remove,
+};
+
+static int mts_spi_dout_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ if (!DEVICE_CAPA(id_eeprom.capa, CAPA_DOUT)) {
+ log_debug("digital outputs not available");
+ return -ENODEV;
+ }
+
+ spi->max_speed_hz = dout_max_speed_hz;
+ spi->mode = 0;
+
+ log_debug("dout_max_speed_hz: %d", dout_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup dout failed");
+ return tmp;
+ }
+
+ spi_dout_value = 0x00;
+ spi_writen(spi, &spi_dout_value, 1);
+
+ spi_dout_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_dout_remove(struct spi_device *spi)
+{
+ spi_dout_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_dout_driver = {
+ .driver = {
+ .name = "mts-io-dout",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_dout_probe,
+ .remove = mts_spi_dout_remove,
+};
+
+static int mts_spi_din_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ if (!DEVICE_CAPA(id_eeprom.capa, CAPA_DIN)) {
+ log_debug("digital inputs not available");
+ return -ENODEV;
+ }
+
+ spi->max_speed_hz = din_max_speed_hz;
+ spi->mode = SPI_CPOL;
+
+ log_debug("din_max_speed_hz: %d", din_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup din failed");
+ return tmp;
+ }
+
+ spi_din_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_din_remove(struct spi_device *spi)
+{
+ spi_din_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_din_driver = {
+ .driver = {
+ .name = "mts-io-din",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_din_probe,
+ .remove = mts_spi_din_remove,
+};
+
+static int mts_spi_dc_dout_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ if (! has_daughter_card || mts_dc_product_id != MTDC_GPIOB_0_0) {
+ log_error("daughter card digital outputs not available");
+ return -ENODEV;
+ }
+
+ spi->max_speed_hz = dc_dout_max_speed_hz;
+ spi->mode = 0;
+
+ log_debug("dc_dout_max_speed_hz: %d", dc_dout_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup dc dout failed");
+ return tmp;
+ }
+
+ spi_dc_dout_value = 0x00;
+ spi_writen(spi, &spi_dc_dout_value, 1);
+
+ spi_dc_dout_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_dc_dout_remove(struct spi_device *spi)
+{
+ spi_dc_dout_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_dc_dout_driver = {
+ .driver = {
+ .name = "mts-io-dc-dout",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_dc_dout_probe,
+ .remove = mts_spi_dc_dout_remove,
+};
+
+static int mts_spi_dc_din_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ if (! has_daughter_card || mts_dc_product_id != MTDC_GPIOB_0_0) {
+ log_error("daughter card digital inputs not available");
+ return -ENODEV;
+ }
+
+ spi->max_speed_hz = dc_din_max_speed_hz;
+ spi->mode = SPI_CPOL;
+
+ log_debug("dc_din_max_speed_hz: %d", dc_din_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup daughter card din failed");
+ return tmp;
+ }
+
+ spi_dc_din_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_dc_din_remove(struct spi_device *spi)
+{
+ spi_dc_din_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_dc_din_driver = {
+ .driver = {
+ .name = "mts-io-dc-din",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_dc_din_probe,
+ .remove = mts_spi_dc_din_remove,
+};
+
+static int mts_spi_dc_adc_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ if (! has_daughter_card || mts_dc_product_id != MTDC_GPIOB_0_0) {
+ log_error("daughter card analog to digital not available");
+ return -ENODEV;
+ }
+
+ spi->max_speed_hz = dc_adc_max_speed_hz;
+ spi->mode = 0;
+
+ log_debug("dc_adc_max_speed_hz: %d", dc_adc_max_speed_hz);
+ log_debug("dc_adc_mode: %d", spi->mode);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup daughter card adc failed");
+ return tmp;
+ }
+
+ spi_dc_adc_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_dc_adc_remove(struct spi_device *spi)
+{
+ spi_dc_adc_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_dc_adc_driver = {
+ .driver = {
+ .name = "mts-io-dc-adc",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_dc_adc_probe,
+ .remove = mts_spi_dc_adc_remove,
+};
+
+static int mts_spi_board_temp_probe(struct spi_device *spi)
+{
+ int tmp;
+
+ spi->max_speed_hz = board_temp_max_speed_hz;
+ spi->mode = SPI_CPOL | SPI_CPHA;
+
+ log_debug("board_temp_max_speed_hz: %d", board_temp_max_speed_hz);
+
+ tmp = spi_setup(spi);
+ if (tmp < 0) {
+ log_error("spi_setup board-temp failed");
+ return tmp;
+ }
+
+ spi_board_temp_dev = spi;
+
+ return 0;
+}
+
+static int mts_spi_board_temp_remove(struct spi_device *spi)
+{
+ spi_board_temp_dev = NULL;
+
+ return 0;
+}
+
+static struct spi_driver mts_spi_board_temp_driver = {
+ .driver = {
+ .name = "mts-io-board-temp",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = mts_spi_board_temp_probe,
+ .remove = mts_spi_board_temp_remove,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 18:42:35 +0000