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-rw-r--r--src/usr/gpio/HBconfig2
-rw-r--r--src/usr/gpio/gpio_pca9551.C343
-rw-r--r--src/usr/gpio/gpiodd.C54
-rw-r--r--src/usr/gpio/makefile4
4 files changed, 388 insertions, 15 deletions
diff --git a/src/usr/gpio/HBconfig b/src/usr/gpio/HBconfig
index e5f650eb9..20ed72dd0 100644
--- a/src/usr/gpio/HBconfig
+++ b/src/usr/gpio/HBconfig
@@ -1,4 +1,4 @@
config GPIODD
- default n
+ default y
help
Enable GPIO device driver support
diff --git a/src/usr/gpio/gpio_pca9551.C b/src/usr/gpio/gpio_pca9551.C
new file mode 100644
index 000000000..6edbd1a9a
--- /dev/null
+++ b/src/usr/gpio/gpio_pca9551.C
@@ -0,0 +1,343 @@
+/* IBM_PROLOG_BEGIN_TAG */
+/* This is an automatically generated prolog. */
+/* */
+/* $Source: src/usr/gpio/gpio_pca9551.C $ */
+/* */
+/* OpenPOWER HostBoot Project */
+/* */
+/* Contributors Listed Below - COPYRIGHT 2019 */
+/* [+] International Business Machines Corp. */
+/* */
+/* */
+/* Licensed under the Apache License, Version 2.0 (the "License"); */
+/* you may not use this file except in compliance with the License. */
+/* You may obtain a copy of the License at */
+/* */
+/* http://www.apache.org/licenses/LICENSE-2.0 */
+/* */
+/* Unless required by applicable law or agreed to in writing, software */
+/* distributed under the License is distributed on an "AS IS" BASIS, */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
+/* implied. See the License for the specific language governing */
+/* permissions and limitations under the License. */
+/* */
+/* IBM_PROLOG_END_TAG */
+/**
+ * @file gpio_pca9551.C
+ *
+ * @brief Implements Interfaces Specific to the PCA9551 GPIO Devices
+ *
+ * @note Reference: https://www.nxp.com/docs/en/data-sheet/PCA9551.pdf
+ *
+ */
+
+
+#include <trace/interface.H>
+#include <errl/errlentry.H>
+#include <errl/errlmanager.H>
+#include <errl/errludtarget.H>
+#include <errl/errludstring.H>
+#include <targeting/common/targetservice.H>
+#include <targeting/common/commontargeting.H>
+#include <devicefw/driverif.H>
+#include "gpiodd.H"
+#include <gpio/gpioddreasoncodes.H>
+#include <gpio/gpioif.H>
+#include <config.h>
+
+extern trace_desc_t* g_trac_gpio;
+
+// Set to TRACFCOMP to enable unit trace
+#define TRACUCOMP(args...) TRACDCOMP(args)
+
+using namespace DeviceFW;
+using namespace TARGETING;
+
+namespace GPIO
+{
+
+
+void gpioPca9551SetReigsterHelper(const PCA9551_LEDS_t i_led,
+ const PCA9551_LED_Output_Settings_t i_setting,
+ uint8_t & io_led_register_data)
+{
+ uint8_t l_led = i_led;
+ uint8_t l_mask = PCA9551_LED_SETTINGS_MASK; // 2-bit mask shifted over to
+ // match i_led's value
+ uint8_t l_setting = i_setting; // will be shifted with 2-bit mask before it is applied
+
+ // Adjust values for LEDs 4 to 7 to match calculations below for LEDs 0 to 3
+ if (i_led > PCA9551_LED3)
+ {
+ l_led = l_led / PCA9551_LED_SETTINGS_DIVISOR;
+ }
+ TRACUCOMP(g_trac_gpio, "gpioPca9551SetReigsterHelper: "
+ "i_led=0x%.2X, l_led=0x%.2X, l_mask=0x%.2X, "
+ "l_setting=0x%.2X, data0=0x%.2X",
+ i_led, l_led, l_mask, l_setting,io_led_register_data);
+
+ // Move 2-bit mask and setting to cover the correct values
+ // Setting register is uint8_t broken into 4 2-bit setting sections:
+ // [LED3 Setting][LED2 Setting][LED1 Setting][LED0 Setting]
+ // --OR--
+ // [LED7 Setting][LED6 Setting][LED5 Setting][LED4 Setting]
+
+ const uint8_t match = 0x01; // shift values until l_led == match
+
+ // l_led must be >= match or following loop won't work
+ assert(l_led >= match, "gpioPca9551SetReigsterHelper: l_led %d is < match %d", l_led, match);
+
+ TRACUCOMP(g_trac_gpio,"gpioPca9551SetReigsterHelper: Pre-loop: "
+ "l_led=0x%.2X, match=0x%.2X",
+ l_led, match);
+ while ( match != l_led )
+ {
+ l_led = l_led >> PCA9551_LED_SHIFT_AMOUNT;
+ l_mask = l_mask << PCA9551_LED_SETTINGS_MASK_SHIFT_AMOUNT;
+ l_setting = l_setting << PCA9551_LED_SETTINGS_MASK_SHIFT_AMOUNT;
+ TRACUCOMP(g_trac_gpio,"gpioPca9551SetReigsterHelper: inside-loop: "
+ "l_led=0x%.2X, l_mask=0x%.2X, l_setting=0x%.2X",
+ l_led, l_mask, l_setting);
+ }
+ TRACUCOMP(g_trac_gpio, "gpioPca9551SetReigsterHelper: Post-loop: "
+ "l_mask=0x%.2X, l_setting=0x%.2X",
+ l_mask, l_setting);
+
+ // Apply Mask to Register data and then OR-in setting bits
+ io_led_register_data = (io_led_register_data & ~l_mask) | l_setting;
+ TRACUCOMP(g_trac_gpio, "gpioPca9551SetReigsterHelper: "
+ "io_led_register_data=0x%.2X",
+ io_led_register_data);
+
+ return;
+}
+
+
+errlHndl_t gpioPca9551GetLeds(TARGETING::Target * i_target,
+ uint8_t & o_led_data)
+{
+ errlHndl_t err = nullptr;
+
+ TRACUCOMP(g_trac_gpio, ENTER_MRK"gpioPca9551GetLeds: "
+ "i_target 0x%.08X",
+ get_huid(i_target));
+
+ do
+ {
+
+ // Read PCA9551 INPUT Register to get Pin (aka LED) Values
+ uint8_t data = 0;
+ size_t data_len = sizeof(data);
+ const size_t exp_data_len = data_len;
+ uint64_t device_type = PCA9551_GPIO_PHYS_PRES;
+ uint64_t register_addr = PCA9551_REGISTER_INPUT;
+
+ err = DeviceFW::deviceOp
+ ( DeviceFW::READ,
+ i_target,
+ &data,
+ data_len,
+ DEVICE_GPIO_ADDRESS(device_type, register_addr)
+ );
+ if(err)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551GetLeds: "
+ "Reading INPUT register failed");
+ break;
+ }
+ else
+ {
+ o_led_data = data;
+ TRACUCOMP(g_trac_gpio, INFO_MRK"gpioPca9551GetLeds: "
+ "register_addr=0x%X, o_led_data=0x%.2X",
+ register_addr, o_led_data);
+ }
+ assert(data_len==exp_data_len, "gpioPca9551GetLeds: expected %d size of data but got %d", exp_data_len, data_len);
+
+ } while (0);
+
+ if (err)
+ {
+ err->collectTrace( GPIO_COMP_NAME );
+ }
+
+ return err;
+}
+
+errlHndl_t gpioPca9551SetLed(TARGETING::Target * i_target,
+ const PCA9551_LEDS_t i_led,
+ const PCA9551_LED_Output_Settings_t i_setting,
+ uint8_t & o_led_data)
+{
+ errlHndl_t err = nullptr;
+
+ TRACUCOMP(g_trac_gpio, ENTER_MRK"gpioPca9551SetLed: "
+ "i_target 0x%.8X, i_led=0x%.2X, i_setting=0x%.2X",
+ get_huid(i_target), i_led, i_setting);
+
+ do
+ {
+ uint64_t deviceType = PCA9551_GPIO_PHYS_PRES;
+
+ // First Read Select Register - either LS0 (LEDs 0-3) or LS1 (LEDs 4-7)
+ uint64_t register_addr = PCA9551_REGISTER_LS0;
+ if (i_led > PCA9551_LED3)
+ {
+ register_addr = PCA9551_REGISTER_LS1;
+ }
+ uint8_t data = 0;
+ size_t data_len = sizeof(data);
+ const size_t exp_data_len = data_len;
+
+ err = DeviceFW::deviceOp
+ ( DeviceFW::READ,
+ i_target,
+ &data,
+ data_len,
+ DEVICE_GPIO_ADDRESS(deviceType, register_addr)
+ );
+ if(err)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551SetLed: "
+ "Reading LED Select register 0x%X failed",
+ register_addr);
+ break;
+ }
+ else
+ {
+ TRACUCOMP(g_trac_gpio, INFO_MRK"gpioPca9551SetLed: "
+ "LED Select register_addr=0x%X, data=0x%.2X",
+ register_addr, data);
+ }
+ assert(data_len==exp_data_len, "gpioPca9551SetLed: expected %d size of data but got %d", exp_data_len, data_len);
+
+
+ // Create Setting Register to Write Back:
+ uint8_t write_data = data;
+ gpioPca9551SetReigsterHelper(i_led, i_setting, write_data);
+
+ // Write LED Select Register
+ data = write_data;
+
+ err = DeviceFW::deviceOp
+ ( DeviceFW::WRITE,
+ i_target,
+ &data,
+ data_len,
+ DEVICE_GPIO_ADDRESS(deviceType, register_addr)
+ );
+ if(err)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551SetLed: "
+ "Writing LED Select register 0x%X failed",
+ register_addr);
+ break;
+ }
+ else
+ {
+ TRACUCOMP(g_trac_gpio, INFO_MRK"gpioPca9551SetLed: "
+ "Writing LED Select register_addr=0x%X, data=0x%.2X",
+ register_addr, data);
+ }
+ assert(data_len==exp_data_len, "gpioPca9551SetLed: expected %d size of data but got %d", exp_data_len, data_len);
+
+
+ // Read Back LED Select Register
+ data = 0;
+ err = DeviceFW::deviceOp
+ ( DeviceFW::READ,
+ i_target,
+ &data,
+ data_len,
+ DEVICE_GPIO_ADDRESS(deviceType, register_addr)
+ );
+ if(err)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551SetLed: "
+ "Reading LED Select register 0x%X failed",
+ register_addr);
+ break;
+ }
+ else
+ {
+ TRACUCOMP(g_trac_gpio, INFO_MRK"gpioPca9551SetLed: "
+ "LED Select register_addr=0x%X, data=0x%.2X",
+ register_addr, data);
+ }
+ assert(data_len==exp_data_len, "gpioPca9551SetLed: expected %d size of data but got %d", exp_data_len, data_len);
+
+ // Compare data written and data read back
+ if (data != write_data)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551SetLed: "
+ "Reading Back LED Select register 0x%X had unexpected data=",
+ "0x%.2X. Expected 0x%.2X",
+ register_addr, data, write_data);
+
+ /*@
+ * @errortype
+ * @reasoncode GPIO_PCA9551_DATA_MISMATCH
+ * @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
+ * @moduleid GPIO_PCA9551_SET_LED
+ * @userdata1[0:31] HUID of Master Processor Target
+ * @userdata1[32:63] Input LED to Set
+ * @userdata2[0:31] Expected Data (aka data written)
+ * @userdata2[32:63] Data Read Back
+ * @devdesc Setting of LED value did not appear to work
+ * @custdesc A problem occurred during the IPL
+ * of the system.
+ */
+ err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
+ GPIO_PCA9551_SET_LED,
+ GPIO_PCA9551_DATA_MISMATCH,
+ TWO_UINT32_TO_UINT64(
+ get_huid(i_target),
+ i_led),
+ TWO_UINT32_TO_UINT64(
+ write_data,
+ data),
+ ERRORLOG::ErrlEntry::ADD_SW_CALLOUT);
+
+ break;
+ }
+
+ // Read PCA9551 INPUT Register to get Pin (aka LED) Values
+ data = 0;
+ data_len = sizeof(data);
+ register_addr = PCA9551_REGISTER_INPUT;
+
+ err = DeviceFW::deviceOp
+ ( DeviceFW::READ,
+ i_target,
+ &data,
+ data_len,
+ DEVICE_GPIO_ADDRESS(deviceType, register_addr)
+ );
+ if(err)
+ {
+ TRACFCOMP(g_trac_gpio, ERR_MRK"gpioPca9551SetLed: "
+ "Reading INPUT register failed");
+ break;
+ }
+ else
+ {
+ o_led_data = data;
+ TRACUCOMP(g_trac_gpio, INFO_MRK"gpioPca9551SetLed: "
+ "INPUT register_addr=0x%X, o_led_data=0x%.2X",
+ register_addr, o_led_data);
+ }
+ assert(data_len==exp_data_len, "gpioPca9551SetLed: expected %d size of data but got %d", exp_data_len, data_len);
+
+ } while (0);
+
+ if (err)
+ {
+ err->collectTrace( GPIO_COMP_NAME );
+ }
+
+ return err;
+
+}
+
+}; // end namespace GPIO
+
diff --git a/src/usr/gpio/gpiodd.C b/src/usr/gpio/gpiodd.C
index 559dab79e..50fa193c5 100644
--- a/src/usr/gpio/gpiodd.C
+++ b/src/usr/gpio/gpiodd.C
@@ -5,7 +5,7 @@
/* */
/* OpenPOWER HostBoot Project */
/* */
-/* Contributors Listed Below - COPYRIGHT 2014,2018 */
+/* Contributors Listed Below - COPYRIGHT 2014,2019 */
/* [+] Google Inc. */
/* [+] International Business Machines Corp. */
/* */
@@ -34,6 +34,8 @@
#include <devicefw/driverif.H>
#include "gpiodd.H"
#include <gpio/gpioddreasoncodes.H>
+#include <gpio/gpioif.H>
+#include <config.h>
trace_desc_t * g_trac_gpio = NULL;
TRAC_INIT( & g_trac_gpio, GPIO_COMP_NAME, KILOBYTE );
@@ -57,6 +59,11 @@ DEVICE_REGISTER_ROUTE( DeviceFW::WILDCARD,
TARGETING::TYPE_MEMBUF,
gpioPerformOp);
+DEVICE_REGISTER_ROUTE( DeviceFW::WILDCARD,
+ DeviceFW::GPIO,
+ TARGETING::TYPE_PROC,
+ gpioPerformOp);
+
errlHndl_t gpioPerformOp(DeviceFW::OperationType i_opType,
TARGETING::Target * i_target,
void * io_buffer,
@@ -237,20 +244,51 @@ errlHndl_t gpioReadAttributes ( TARGETING::Target * i_target,
{
errlHndl_t err = NULL;
- TARGETING::GpioInfo gpioData;
-
bool attrReadErr = false;
+#ifndef CONFIG_FSP_BUILD
+ TARGETING::GpioInfo gpioData;
+#endif
+ TARGETING::GpioInfoPhysPres gpioDataPhysPres;
switch(io_gpioInfo.deviceType)
{
+#ifndef CONFIG_FSP_BUILD
case PCA95X_GPIO:
if( !( i_target->
tryGetAttr<TARGETING::ATTR_GPIO_INFO>( gpioData ) ) )
{
attrReadErr = true;
}
+ else
+ {
+ io_gpioInfo.i2cMasterPath = gpioData.i2cMasterPath;
+ io_gpioInfo.engine = gpioData.engine;
+ io_gpioInfo.i2cPort = gpioData.port;
+ io_gpioInfo.i2cDeviceAddr = gpioData.devAddr;
+ io_gpioInfo.i2cMuxBusSelector = gpioData.i2cMuxBusSelector;
+ io_gpioInfo.i2cMuxPath = gpioData.i2cMuxPath;
+ }
break;
+#endif
+ case PCA9551_GPIO_PHYS_PRES:
+
+ if( !( i_target->
+ tryGetAttr<TARGETING::ATTR_GPIO_INFO_PHYS_PRES>(gpioDataPhysPres)))
+ {
+ attrReadErr = true;
+ }
+ else
+ {
+ io_gpioInfo.i2cMasterPath = gpioDataPhysPres.i2cMasterPath;
+ io_gpioInfo.engine = gpioDataPhysPres.engine;
+ io_gpioInfo.i2cPort = gpioDataPhysPres.port;
+ io_gpioInfo.i2cDeviceAddr = gpioDataPhysPres.devAddr;
+ io_gpioInfo.i2cMuxBusSelector = gpioDataPhysPres.i2cMuxBusSelector;
+ io_gpioInfo.i2cMuxPath = gpioDataPhysPres.i2cMuxPath;
+ }
+ break;
+
default:
TRACFCOMP( g_trac_gpio,ERR_MRK"gpioReadAttributes() - "
@@ -309,16 +347,6 @@ errlHndl_t gpioReadAttributes ( TARGETING::Target * i_target,
err->collectTrace( GPIO_COMP_NAME );
}
- if( !err )
- {
- io_gpioInfo.i2cMasterPath = gpioData.i2cMasterPath;
- io_gpioInfo.engine = gpioData.engine;
- io_gpioInfo.i2cPort = gpioData.port;
- io_gpioInfo.i2cDeviceAddr = gpioData.devAddr;
- io_gpioInfo.i2cMuxBusSelector = gpioData.i2cMuxBusSelector;
- io_gpioInfo.i2cMuxPath = gpioData.i2cMuxPath;
- }
-
return err;
}
diff --git a/src/usr/gpio/makefile b/src/usr/gpio/makefile
index d40eaa130..fd42e2d1d 100644
--- a/src/usr/gpio/makefile
+++ b/src/usr/gpio/makefile
@@ -5,7 +5,7 @@
#
# OpenPOWER HostBoot Project
#
-# Contributors Listed Below - COPYRIGHT 2014
+# Contributors Listed Below - COPYRIGHT 2014,2019
# [+] Google Inc.
# [+] International Business Machines Corp.
#
@@ -27,6 +27,8 @@ ROOTPATH = ../../..
MODULE = gpio
OBJS += $(if $(CONFIG_GPIODD),gpiodd.o,)
+OBJS += $(if $(CONFIG_GPIODD),gpio_pca9551.o,)
+
# no way to test this at the moment TODO RTC 111415
#SUBDIRS = test.d
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