cpu/atmega_common: Add PM on peripherals

Add PM blocks to adc/i2c/spi peripherals. Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
RIOT-OS · Jul 6, 2023 · e5c09bf · e5c09bf
1 parent 60e83a3
commit e5c09bf
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diff --git a/cpu/atmega_common/periph/adc.c b/cpu/atmega_common/periph/adc.c
@@ -25,6 +25,7 @@
 #include "cpu.h"
 #include "mutex.h"
 #include "periph/adc.h"
+#include "periph/pm.h"
 #include "periph_conf.h"
 
 #define ADC_MAX_CLK         (200000U)
@@ -33,6 +34,7 @@ static mutex_t lock = MUTEX_INIT;
 
 static inline void _prep(void)
 {
+    pm_block(3); /* Require clkADC */
     mutex_lock(&lock);
     /* Enable ADC */
     ADCSRA |= (1 << ADEN);
@@ -43,6 +45,7 @@ static inline void _done(void)
     /* Disable ADC */
     ADCSRA &= ~(1 << ADEN);
     mutex_unlock(&lock);
+    pm_unblock(3);
 }
 
 int adc_init(adc_t line)

diff --git a/cpu/atmega_common/periph/i2c.c b/cpu/atmega_common/periph/i2c.c
@@ -31,6 +31,7 @@
 #include "cpu.h"
 #include "mutex.h"
 #include "periph/i2c.h"
+#include "periph/pm.h"
 #include "periph_conf.h"
 
 #define ENABLE_DEBUG        0
@@ -226,6 +227,7 @@ void i2c_acquire(i2c_t dev)
 {
     assert(dev < I2C_NUMOF);
 
+    pm_block(4); /* Require clkIO */
     mutex_lock(&locks[dev]);
 }
 
@@ -234,6 +236,7 @@ void i2c_release(i2c_t dev)
     assert(dev < I2C_NUMOF);
 
     mutex_unlock(&locks[dev]);
+    pm_unblock(4);
 }
 
 static void i2c_poweron(i2c_t dev)

diff --git a/cpu/atmega_common/periph/spi.c b/cpu/atmega_common/periph/spi.c
@@ -31,6 +31,7 @@
 #include "cpu.h"
 #include "mutex.h"
 #include "periph/spi.h"
+#include "periph/pm.h"
 
 /**
  * @brief   Extract BR0, BR1 and SPI2X bits from speed value
@@ -89,6 +90,7 @@ void spi_acquire(spi_t bus, spi_cs_t cs, spi_mode_t mode, spi_clk_t clk)
     assert(bus == SPI_DEV(0));
 
     /* lock the bus and power on the SPI peripheral */
+    pm_block(4); /* Require clkIO */
     mutex_lock(&lock);
 #ifdef PRSPI
     power_spi_enable();
@@ -112,6 +114,7 @@ void spi_release(spi_t bus)
     power_spi_disable();
 #endif
     mutex_unlock(&lock);
+    pm_unblock(4);
 }
 
 void spi_transfer_bytes(spi_t bus, spi_cs_t cs, bool cont,