refactor(pcnt): make pcnt driver as component

.gitlab/CODEOWNERS

@@ -87,6 +87,7 @@
 /components/esp_bootloader_format/    @esp-idf-codeowners/system @esp-idf-codeowners/app-utilities
 /components/esp_coex/                 @esp-idf-codeowners/wifi @esp-idf-codeowners/bluetooth @esp-idf-codeowners/ieee802154
 /components/esp_common/               @esp-idf-codeowners/system
+/components/esp_driver_*/             @esp-idf-codeowners/peripherals
 /components/esp_eth/                  @esp-idf-codeowners/network
 /components/esp_event/                @esp-idf-codeowners/system
 /components/esp_gdbstub/              @esp-idf-codeowners/debugging

components/driver/CMakeLists.txt

@@ -23,7 +23,6 @@ set(includes "include"
              "ledc/include"
              "mcpwm/include"
              "parlio/include"
-             "pcnt/include"
              "rmt/include"
              "sdio_slave/include"
              "sdmmc/include"
@@ -150,10 +149,9 @@ if(CONFIG_SOC_MCPWM_SUPPORTED)
     list(APPEND ldfragments "mcpwm/linker.lf")
 endif()
 
-# PCNT related source files
+# PCNT legacy driver
 if(CONFIG_SOC_PCNT_SUPPORTED)
-    list(APPEND srcs "pcnt/pulse_cnt.c"
+    list(APPEND srcs "deprecated/pcnt_legacy.c")
-                     "deprecated/pcnt_legacy.c")
 endif()
 
 # RMT related source files
@@ -245,6 +243,9 @@ else()
                            INCLUDE_DIRS ${includes}
                            PRIV_REQUIRES efuse esp_timer esp_mm
                            REQUIRES esp_pm esp_ringbuf freertos soc hal esp_hw_support
+                           # for backward compatibility, the driver component needs to
+                           # have a public dependency on other "esp_driver_foo" components
+                                    esp_driver_pcnt
                            LDFRAGMENTS ${ldfragments}
                           )
 endif()

components/driver/Kconfig

@@ -227,7 +227,7 @@ menu "Driver Configurations"
 
     orsource "./gptimer/Kconfig.gptimer"
 
-    orsource "./pcnt/Kconfig.pcnt"
+    orsource "../esp_driver_pcnt/Kconfig.pcnt"
 
     orsource "./rmt/Kconfig.rmt"
 

components/driver/linker.lf

@@ -1,11 +1,6 @@
 [mapping:driver]
 archive: libdriver.a
 entries:
-    if PCNT_CTRL_FUNC_IN_IRAM = y:
-        pulse_cnt: pcnt_unit_start (noflash)
-        pulse_cnt: pcnt_unit_stop (noflash)
-        pulse_cnt: pcnt_unit_clear_count (noflash)
-        pulse_cnt: pcnt_unit_get_count (noflash)
     if SDM_CTRL_FUNC_IN_IRAM = y:
         sdm: sdm_channel_set_pulse_density (noflash)
     if ANA_CMPR_CTRL_FUNC_IN_IRAM = y:

components/driver/test_apps/.build-test-rules.yml

@@ -113,10 +113,6 @@ components/driver/test_apps/parlio:
       temporary: true
       reason: lack of runner
 
-components/driver/test_apps/pulse_cnt:
-  disable:
-    - if: SOC_PCNT_SUPPORTED != 1
-
 components/driver/test_apps/rmt:
   disable:
     - if: SOC_RMT_SUPPORTED != 1

components/driver/test_apps/dac_test_apps/dac/main/CMakeLists.txt

@@ -8,5 +8,5 @@ endif()
 # In order for the cases defined by `TEST_CASE` to be linked into the final elf,
 # the component can be registered as WHOLE_ARCHIVE
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver esp_adc
+                       PRIV_REQUIRES unity esp_driver_pcnt driver esp_adc
                        WHOLE_ARCHIVE)

components/driver/test_apps/i2s_test_apps/i2s/main/CMakeLists.txt

@@ -3,5 +3,5 @@ set(srcs "test_app_main.c"
          "test_i2s_iram.c")
 
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver spi_flash
+                       PRIV_REQUIRES unity esp_driver_pcnt driver spi_flash
                        WHOLE_ARCHIVE)

components/driver/test_apps/i2s_test_apps/legacy_i2s_driver/main/CMakeLists.txt

@@ -2,5 +2,5 @@ set(srcs "test_app_main.c"
          "test_legacy_i2s.c")
 
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver
+                       PRIV_REQUIRES unity esp_driver_pcnt driver
                        WHOLE_ARCHIVE)

components/driver/test_apps/ledc/main/CMakeLists.txt

@@ -4,5 +4,5 @@ set(srcs "test_app_main.c"
 # In order for the cases defined by `TEST_CASE` to be linked into the final elf,
 # the component can be registered as WHOLE_ARCHIVE
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver esp_timer esp_psram
+                       PRIV_REQUIRES unity esp_driver_pcnt driver esp_timer esp_psram
                        WHOLE_ARCHIVE)

components/driver/test_apps/legacy_mcpwm_driver/main/CMakeLists.txt

@@ -4,5 +4,5 @@ set(srcs "test_app_main.c"
 # In order for the cases defined by `TEST_CASE` to be linked into the final elf,
 # the component can be registered as WHOLE_ARCHIVE
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver
+                       PRIV_REQUIRES unity esp_driver_pcnt driver
                        WHOLE_ARCHIVE)

components/esp_driver_pcnt/CMakeLists.txt

@@ -0,0 +1,17 @@
+set(srcs)
+set(public_include "include")
+if(CONFIG_SOC_PCNT_SUPPORTED)
+    list(APPEND srcs "src/pulse_cnt.c")
+endif()
+
+if(BOOTLOADER_BUILD)
+    # Bootloader shall NOT depend on the drivers
+    idf_component_register()
+else()
+    idf_component_register(SRCS ${srcs}
+                           INCLUDE_DIRS ${public_include}
+                           PRIV_REQUIRES "esp_pm"
+                                         "driver" # will be replaced by esp_driver_gpio
+                           LDFRAGMENTS "linker.lf"
+                          )
+endif()

components/esp_driver_pcnt/linker.lf

@@ -0,0 +1,8 @@
+[mapping:pcnt_driver]
+archive: libesp_driver_pcnt.a
+entries:
+    if PCNT_CTRL_FUNC_IN_IRAM = y:
+        pulse_cnt: pcnt_unit_start (noflash)
+        pulse_cnt: pcnt_unit_stop (noflash)
+        pulse_cnt: pcnt_unit_clear_count (noflash)
+        pulse_cnt: pcnt_unit_get_count (noflash)

components/esp_driver_pcnt/src/pulse_cnt.c

@@ -192,7 +192,7 @@ esp_err_t pcnt_new_unit(const pcnt_unit_config_t *config, pcnt_unit_handle_t *re
                       "invalid limit range:[%d,%d]", config->low_limit, config->high_limit);
     if (config->intr_priority) {
         ESP_GOTO_ON_FALSE(1 << (config->intr_priority) & PCNT_ALLOW_INTR_PRIORITY_MASK, ESP_ERR_INVALID_ARG, err,
-                            TAG, "invalid interrupt priority:%d", config->intr_priority);
+                          TAG, "invalid interrupt priority:%d", config->intr_priority);
     }
 
     unit = heap_caps_calloc(1, sizeof(pcnt_unit_t), PCNT_MEM_ALLOC_CAPS);
@@ -225,8 +225,8 @@ esp_err_t pcnt_new_unit(const pcnt_unit_config_t *config, pcnt_unit_handle_t *re
             isr_flags |= PCNT_ALLOW_INTR_PRIORITY_MASK;
         }
         ESP_GOTO_ON_ERROR(esp_intr_alloc_intrstatus(pcnt_periph_signals.groups[group_id].irq, isr_flags,
-                          (uint32_t)pcnt_ll_get_intr_status_reg(group->hal.dev), PCNT_LL_UNIT_WATCH_EVENT(unit_id),
+                                                    (uint32_t)pcnt_ll_get_intr_status_reg(group->hal.dev), PCNT_LL_UNIT_WATCH_EVENT(unit_id),
-                          pcnt_default_isr, unit, &unit->intr), err,
+                                                    pcnt_default_isr, unit, &unit->intr), err,
                           TAG, "install interrupt service failed");
     }
 
@@ -488,8 +488,8 @@ esp_err_t pcnt_unit_register_event_callbacks(pcnt_unit_handle_t unit, const pcnt
             isr_flags |= PCNT_ALLOW_INTR_PRIORITY_MASK;
         }
         ESP_RETURN_ON_ERROR(esp_intr_alloc_intrstatus(pcnt_periph_signals.groups[group_id].irq, isr_flags,
-                            (uint32_t)pcnt_ll_get_intr_status_reg(group->hal.dev), PCNT_LL_UNIT_WATCH_EVENT(unit_id),
+                                                      (uint32_t)pcnt_ll_get_intr_status_reg(group->hal.dev), PCNT_LL_UNIT_WATCH_EVENT(unit_id),
-                            pcnt_default_isr, unit, &unit->intr),
+                                                      pcnt_default_isr, unit, &unit->intr),
                             TAG, "install interrupt service failed");
     }
     // enable/disable PCNT interrupt events

components/esp_driver_pcnt/test_apps/.build-test-rules.yml

@@ -0,0 +1,7 @@
+# Documentation: .gitlab/ci/README.md#manifest-file-to-control-the-buildtest-apps
+
+components/esp_driver_pcnt/test_apps/pulse_cnt:
+  disable:
+    - if: SOC_PCNT_SUPPORTED != 1
+  depends_components:
+    - esp_driver_pcnt

components/esp_driver_pcnt/test_apps/pulse_cnt/CMakeLists.txt

@@ -10,7 +10,7 @@ project(pcnt_test)
 if(CONFIG_COMPILER_DUMP_RTL_FILES)
     add_custom_target(check_test_app_sections ALL
                       COMMAND ${PYTHON} $ENV{IDF_PATH}/tools/ci/check_callgraph.py
-                      --rtl-dirs ${CMAKE_BINARY_DIR}/esp-idf/driver/,${CMAKE_BINARY_DIR}/esp-idf/hal/
+                      --rtl-dirs ${CMAKE_BINARY_DIR}/esp-idf/esp_driver_pcnt/,${CMAKE_BINARY_DIR}/esp-idf/hal/
                       --elf-file ${CMAKE_BINARY_DIR}/pcnt_test.elf
                       find-refs
                       --from-sections=.iram0.text

components/esp_driver_pcnt/test_apps/pulse_cnt/main/CMakeLists.txt

@@ -9,5 +9,6 @@ endif()
 # In order for the cases defined by `TEST_CASE` to be linked into the final elf,
 # the component can be registered as WHOLE_ARCHIVE
 idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver spi_flash
+                       PRIV_REQUIRES unity esp_driver_pcnt spi_flash
+                                     driver # will be replaced by esp_driver_gpio
                        WHOLE_ARCHIVE)

components/esp_timer/CMakeLists.txt

@@ -1,28 +1,24 @@
 idf_build_get_property(target IDF_TARGET)
 
 if(${target} STREQUAL "linux")
-idf_component_register(INCLUDE_DIRS include)
+    idf_component_register(INCLUDE_DIRS include)
 else()
+    set(srcs "src/esp_timer.c"
+             "src/ets_timer_legacy.c"
+             "src/system_time.c"
+             "src/esp_timer_impl_common.c")
 
-set(srcs "src/esp_timer.c"
+    if(CONFIG_ESP_TIMER_IMPL_TG0_LAC)
-         "src/ets_timer_legacy.c"
+        list(APPEND srcs "src/esp_timer_impl_lac.c")
-         "src/system_time.c"
+    elseif(CONFIG_ESP_TIMER_IMPL_SYSTIMER)
-         "src/esp_timer_impl_common.c")
+        list(APPEND srcs "src/esp_timer_impl_systimer.c")
-
+    endif()
-if(CONFIG_ESP_TIMER_IMPL_TG0_LAC)
-    list(APPEND srcs "src/esp_timer_impl_lac.c")
-elseif(CONFIG_ESP_TIMER_IMPL_SYSTIMER)
-    list(APPEND srcs "src/esp_timer_impl_systimer.c")
-endif()
-
-if(CONFIG_SOC_SYSTIMER_SUPPORT_ETM)
-    list(APPEND srcs "src/esp_timer_etm.c")
-endif()
-
-idf_component_register(SRCS "${srcs}"
-                    INCLUDE_DIRS include
-                    PRIV_INCLUDE_DIRS private_include
-                    REQUIRES esp_common
-                    PRIV_REQUIRES soc driver)
 
+    if(CONFIG_SOC_SYSTIMER_SUPPORT_ETM)
+        list(APPEND srcs "src/esp_timer_etm.c")
+    endif()
+
+    idf_component_register(SRCS "${srcs}"
+                           INCLUDE_DIRS include
+                           PRIV_INCLUDE_DIRS private_include)
 endif()

docs/doxygen/Doxyfile

@@ -106,7 +106,6 @@ INPUT = \
     $(PROJECT_PATH)/components/driver/mcpwm/include/driver/mcpwm_types.h \
     $(PROJECT_PATH)/components/driver/parlio/include/driver/parlio_tx.h \
     $(PROJECT_PATH)/components/driver/parlio/include/driver/parlio_types.h \
-    $(PROJECT_PATH)/components/driver/pcnt/include/driver/pulse_cnt.h \
     $(PROJECT_PATH)/components/driver/rmt/include/driver/rmt_common.h \
     $(PROJECT_PATH)/components/driver/rmt/include/driver/rmt_encoder.h \
     $(PROJECT_PATH)/components/driver/rmt/include/driver/rmt_rx.h \
@@ -140,6 +139,7 @@ INPUT = \
     $(PROJECT_PATH)/components/esp_common/include/esp_check.h \
     $(PROJECT_PATH)/components/esp_common/include/esp_err.h \
     $(PROJECT_PATH)/components/esp_common/include/esp_idf_version.h \
+    $(PROJECT_PATH)/components/esp_driver_pcnt/include/driver/pulse_cnt.h \
     $(PROJECT_PATH)/components/esp_eth/include/esp_eth_com.h \
     $(PROJECT_PATH)/components/esp_eth/include/esp_eth_driver.h \
     $(PROJECT_PATH)/components/esp_eth/include/esp_eth_mac.h \

examples/peripherals/.build-test-rules.yml

@@ -193,6 +193,8 @@ examples/peripherals/parlio/simple_rgb_led_matrix:
 examples/peripherals/pcnt:
   disable:
     - if: SOC_PCNT_SUPPORTED != 1
+  depends_components:
+    - esp_driver_pcnt
 
 examples/peripherals/rmt:
   disable:

tools/test_apps/system/g1_components/CMakeLists.txt

@@ -33,9 +33,9 @@ set(extra_components_which_shouldnt_be_included
     bootloader_support
     # [refactor-todo]: should cxx be in G1? Can it exist without FreeRTOS?
     cxx
-    # [refactor-todo]: driver is a dependency of esp_pm, esp_timer, spi_flash, vfs, esp_wifi, ${IDF_TARGET}
+    # [refactor-todo]: driver is a dependency of esp_pm, spi_flash, vfs, esp_wifi
     #   all of these should be removed from G1 except for spi_flash.
-    driver
+    driver esp_driver_pcnt
     # esp_app_format is dependency of bootloader_support, app_update
     esp_app_format
     # esp_bootloader_format is dependency of bootloader_support, app_update

tools/unit-test-app/components/test_utils/CMakeLists.txt

@@ -16,5 +16,5 @@ endif()
 idf_component_register(SRCS ${srcs}
                     INCLUDE_DIRS include
                     REQUIRES esp_partition idf_test cmock
-                    PRIV_REQUIRES perfmon driver esp_netif)
+                    PRIV_REQUIRES perfmon esp_driver_pcnt driver esp_netif)
 target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")