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Mon, 7 Nov 2022 09:17:34 -0500 (EST) From: Maxime Ripard Date: Mon, 07 Nov 2022 15:16:38 +0100 Subject: [PATCH v7 12/23] drm/connector: Add a function to lookup a TV mode by its name MIME-Version: 1.0 Message-Id: <20220728-rpi-analog-tv-properties-v7-12-7072a478c6b3@cerno.tech> References: <20220728-rpi-analog-tv-properties-v7-0-7072a478c6b3@cerno.tech> In-Reply-To: <20220728-rpi-analog-tv-properties-v7-0-7072a478c6b3@cerno.tech> To: Jani Nikula , Joonas Lahtinen , Tvrtko Ursulin , Ben Skeggs , Rodrigo Vivi , Maxime Ripard , Samuel Holland , Jernej Skrabec , Maarten Lankhorst , Emma Anholt , Karol Herbst , Daniel Vetter , Chen-Yu Tsai , Lyude Paul , Thomas Zimmermann , David Airlie Cc: =?unknown-8bit?q?Phil_Elwell_=3Cphil=40raspberrypi=2Ecom=3E=2C_Maxime_Ri?= =?unknown-8bit?q?pard_=3Cmaxime=40cerno=2Etech=3E=2C_Hans_de_Goede_=3Chdego?= =?unknown-8bit?q?ede=40redhat=2Ecom=3E=2C?= =?unknown-8bit?q?_linux-sunxi=40lists=2Elinux=2Edev=2C_linux-kernel=40vger?= =?unknown-8bit?q?=2Ekernel=2Eorg=2C_Geert_Uytterhoeven_=3Cgeert=40linux-m68?= =?unknown-8bit?q?k=2Eorg=3E=2C?= =?unknown-8bit?q?_Dave_Stevenson_=3Cdave=2Estevenson=40raspberrypi=2Ecom=3E?= =?unknown-8bit?q?=2C_linux-arm-kernel=40lists=2Einfradead=2Eorg=2C_Dom_Cobl?= =?unknown-8bit?q?ey_=3Cdom=40raspberrypi=2Ecom=3E=2C?= =?unknown-8bit?q?_Mateusz_Kwiatkowski_=3Ckfyatek+publicgit=40gmail=2Ecom=3E?= =?unknown-8bit?q?=2C_dri-devel=40lists=2Efreedesktop=2Eorg=2C_intel-gfx=40l?= =?unknown-8bit?q?ists=2Efreedesktop=2Eorg=2C?= =?unknown-8bit?q?_nouveau=40lists=2Efreedesktop=2Eorg=2C_Noralf_Tr=C3=B8nnes?= =?unknown-8bit?q?_=3Cnoralf=40tronnes=2Eorg=3E?= X-Mailer: b4 0.11.0-dev-99e3a X-Developer-Signature: v=1; a=openpgp-sha256; l=5877; i=maxime@cerno.tech; h=from:subject:message-id; bh=OibD9L+0N3v79XwK5wYQ+LNcQ4mtLEndDfkBHXvN8N8=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMmZwg6iPVHPz4rP7rxQt/eu7/OI3zfyjuSUmVRfeHGFUTuJ cfPcjlIWBjEuBlkxRZYYYfMlcadmve5k45sHM4eVCWQIAxenAEzkQSQjw0dR/Y4VfBMFFNMmiv26du LppCyrnfq/JDe8bw9jbZ7wLpaRYUeJEu//X7OW5kn4pZy9mVLq5bdIJ6H40YKdBwr1nQ/GsQEA X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221107_061738_651424_77BE37B5 X-CRM114-Status: GOOD ( 18.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As part of the command line parsing rework coming in the next patches, we'll need to lookup drm_connector_tv_mode values by their name, already defined in drm_tv_mode_enum_list. In order to avoid any code duplication, let's do a function that will perform a lookup of a TV mode name and return its value. Reviewed-by: Noralf Trønnes Signed-off-by: Maxime Ripard --- Changes in v7: - Add kunit tests --- drivers/gpu/drm/drm_connector.c | 24 ++++++++ drivers/gpu/drm/tests/Makefile | 1 + drivers/gpu/drm/tests/drm_connector_test.c | 90 ++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 2 + 4 files changed, 117 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index f9a6cb792bda..9aec878c8509 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -995,6 +995,30 @@ static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = { }; DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list) +/** + * drm_get_tv_mode_from_name - Translates a TV mode name into its enum value + * @name: TV Mode name we want to convert + * @len: Length of @name + * + * Translates @name into an enum drm_connector_tv_mode. + * + * Returns: the enum value on success, a negative errno otherwise. + */ +int drm_get_tv_mode_from_name(const char *name, size_t len) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(drm_tv_mode_enum_list); i++) { + const struct drm_prop_enum_list *item = &drm_tv_mode_enum_list[i]; + + if (strlen(item->name) == len && !strncmp(item->name, name, len)) + return item->type; + } + + return -EINVAL; +} +EXPORT_SYMBOL(drm_get_tv_mode_from_name); + static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile index b22ac96fdd65..c7903c112c65 100644 --- a/drivers/gpu/drm/tests/Makefile +++ b/drivers/gpu/drm/tests/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \ drm_buddy_test.o \ drm_cmdline_parser_test.o \ + drm_connector_test.o \ drm_damage_helper_test.o \ drm_dp_mst_helper_test.o \ drm_format_helper_test.o \ diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c new file mode 100644 index 000000000000..f2272b9df211 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_connector_test.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Kunit test for drm_modes functions + */ + +#include + +#include + +struct drm_get_tv_mode_from_name_test { + const char *name; + enum drm_connector_tv_mode expected_mode; +}; + +#define TV_MODE_NAME(_name, _mode) \ + { \ + .name = _name, \ + .expected_mode = _mode, \ + } + +static void drm_test_get_tv_mode_from_name_valid(struct kunit *test) +{ + const struct drm_get_tv_mode_from_name_test *params = test->param_value; + + KUNIT_EXPECT_EQ(test, + drm_get_tv_mode_from_name(params->name, strlen(params->name)), + params->expected_mode); +} + +static const +struct drm_get_tv_mode_from_name_test drm_get_tv_mode_from_name_valid_tests[] = { + TV_MODE_NAME("NTSC", DRM_MODE_TV_MODE_NTSC), + TV_MODE_NAME("NTSC-443", DRM_MODE_TV_MODE_NTSC_443), + TV_MODE_NAME("NTSC-J", DRM_MODE_TV_MODE_NTSC_J), + TV_MODE_NAME("PAL", DRM_MODE_TV_MODE_PAL), + TV_MODE_NAME("PAL-M", DRM_MODE_TV_MODE_PAL_M), + TV_MODE_NAME("PAL-N", DRM_MODE_TV_MODE_PAL_N), + TV_MODE_NAME("SECAM", DRM_MODE_TV_MODE_SECAM), +}; + +static void +drm_get_tv_mode_from_name_valid_desc(const struct drm_get_tv_mode_from_name_test *t, + char *desc) +{ + sprintf(desc, "%s", t->name); +} +KUNIT_ARRAY_PARAM(drm_get_tv_mode_from_name_valid, + drm_get_tv_mode_from_name_valid_tests, + drm_get_tv_mode_from_name_valid_desc); + +static void drm_test_get_tv_mode_from_name_invalid(struct kunit *test) +{ + const char *name = *(const char **)test->param_value; + + KUNIT_EXPECT_LT(test, + drm_get_tv_mode_from_name(name, strlen(name)), + 0); +} + +static const +char *drm_get_tv_mode_from_name_invalid_tests[] = { + /* Truncated */ + "NTS", +}; + +static void +drm_get_tv_mode_from_name_invalid_desc(const char **name, char *desc) +{ + sprintf(desc, "%s", *name); +} +KUNIT_ARRAY_PARAM(drm_get_tv_mode_from_name_invalid, + drm_get_tv_mode_from_name_invalid_tests, + drm_get_tv_mode_from_name_invalid_desc); + +static struct kunit_case drm_get_tv_mode_from_name_tests[] = { + KUNIT_CASE_PARAM(drm_test_get_tv_mode_from_name_valid, + drm_get_tv_mode_from_name_valid_gen_params), + KUNIT_CASE_PARAM(drm_test_get_tv_mode_from_name_invalid, + drm_get_tv_mode_from_name_invalid_gen_params), + { } +}; + +static struct kunit_suite drm_get_tv_mode_from_name_test_suite = { + .name = "drm_get_tv_mode_from_name", + .test_cases = drm_get_tv_mode_from_name_tests, +}; + +kunit_test_suites( + &drm_get_tv_mode_from_name_test_suite +); diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 4927dcb2573f..c856f4871697 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1872,6 +1872,8 @@ const char *drm_get_dp_subconnector_name(int val); const char *drm_get_content_protection_name(int val); const char *drm_get_hdcp_content_type_name(int val); +int drm_get_tv_mode_from_name(const char *name, size_t len); + int drm_mode_create_dvi_i_properties(struct drm_device *dev); void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector);