[mynewt-core] 07/26: hw/hal: Add hal_spi_init_hw

[an...@apache.org]

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andk pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-core.git

commit e1ccfe3412f2a8a68ac354c8c3c89bc07c84ab10
Author: Andrzej Kaczmarek <an...@codecoup.pl>
AuthorDate: Thu Nov 8 17:27:36 2018 +0100

    hw/hal: Add hal_spi_init_hw
    
    This adds init function which gets generic structure as a parameter as
    opposed to hal_spi_init which requires MCU-specific structure. This is
    to make it compatible with latest similar addition to I2C HAL.
---
 hw/hal/include/hal/hal_spi.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/hw/hal/include/hal/hal_spi.h b/hw/hal/include/hal/hal_spi.h
index 092cbf7..af987ba 100644
--- a/hw/hal/include/hal/hal_spi.h
+++ b/hw/hal/include/hal/hal_spi.h
@@ -60,6 +60,14 @@ extern "C" {
 /* Prototype for tx/rx callback */
 typedef void (*hal_spi_txrx_cb)(void *arg, int len);
 
+/** SPI controller hardware settings */
+struct hal_spi_hw_settings {
+    uint8_t pin_sck;
+    uint8_t pin_mosi;
+    uint8_t pin_miso;
+    uint8_t pin_ss;
+};
+
 /**
  * since one spi device can control multiple devices, some configuration
  * can be changed on the fly from the hal
@@ -89,6 +97,20 @@ struct hal_spi_settings {
 int hal_spi_init(int spi_num, void *cfg, uint8_t spi_type);
 
 /**
+ * Initialize SPI controller
+ *
+ * This initializes SPI controller hardware before 1st use. Shall be called
+ * only once.
+ *
+ * @param spi_num  Number of SPI controller
+ * @param cfg      Configuration
+ *
+ * @return 0 on success, non-zero error code on failure
+ */
+int hal_spi_init_hw(uint8_t spi_num, uint8_t spi_type,
+                    const struct hal_spi_hw_settings *cfg);
+
+/**
  * Configure the spi. Must be called after the spi is initialized (after
  * hal_spi_init is called) and when the spi is disabled (user must call
  * hal_spi_disable if the spi has been enabled through hal_spi_enable prior