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Wed, 05 Apr 2023 17:24:51 -0700 (PDT) Date: Thu, 6 Apr 2023 00:24:46 +0000 In-Reply-To: <20230406002447.4046378-1-komlodi@google.com> Mime-Version: 1.0 References: <20230406002447.4046378-1-komlodi@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog Message-ID: <20230406002447.4046378-2-komlodi@google.com> Subject: [PATCH 1/2] hw/gpio/npcm7xx: Add GPIO DIN object property From: Joe Komlodi To: qemu-devel@nongnu.org Cc: komlodi@google.com, wuhaotsh@google.com, kfting@nuvoton.com, qemu-arm@nongnu.org Received-SPF: pass client-ip=2607:f8b0:4864:20::649; envelope-from=3UxEuZAcKClY8CA9C164CC492.0CAE2AI-12J29BCB4BI.CF4@flex--komlodi.bounces.google.com; helo=mail-pl1-x649.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In cases where the input pin is driven by an entity outside of the machine, such as a machine the BMC is managing, we need a way to update the pin state when the external machine drives it. This allows us to do it via QMP. For example, to set pin 20 on GPIO controller 0: {"execute":"qom-set","arguments": { "path":"/machine/soc/gpio[0]", "property":"gpio-pins-in", "value":1048576 }} 1048576 == 0x100000, JSON does not support hex. Signed-off-by: Joe Komlodi --- hw/gpio/npcm7xx_gpio.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/hw/gpio/npcm7xx_gpio.c b/hw/gpio/npcm7xx_gpio.c index 3376901ab1..2a7be60d8d 100644 --- a/hw/gpio/npcm7xx_gpio.c +++ b/hw/gpio/npcm7xx_gpio.c @@ -20,6 +20,7 @@ #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "qapi/error.h" +#include "qapi/visitor.h" #include "qemu/log.h" #include "qemu/module.h" #include "qemu/units.h" @@ -340,6 +341,29 @@ static void npcm7xx_gpio_set_input(void *opaque, int line, int level) npcm7xx_gpio_update_pins(s, BIT(line)); } +static void npcm7xx_gpio_get_pins_in(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + uint32_t *pins_in = (uint32_t *)opaque; + + visit_type_uint32(v, name, pins_in, errp); +} + +static void npcm7xx_gpio_set_pins_in(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + NPCM7xxGPIOState *s = NPCM7XX_GPIO(obj); + uint32_t new_pins_in; + + if (!visit_type_uint32(v, name, &new_pins_in, errp)) { + return; + } + + s->ext_driven = new_pins_in; + s->ext_level = new_pins_in; + npcm7xx_gpio_update_pins(s, new_pins_in); +} + static void npcm7xx_gpio_enter_reset(Object *obj, ResetType type) { NPCM7xxGPIOState *s = NPCM7XX_GPIO(obj); @@ -371,6 +395,10 @@ static void npcm7xx_gpio_init(Object *obj) qdev_init_gpio_in(dev, npcm7xx_gpio_set_input, NPCM7XX_GPIO_NR_PINS); qdev_init_gpio_out(dev, s->output, NPCM7XX_GPIO_NR_PINS); + + object_property_add(obj, "gpio-pins-in", "uint32", + npcm7xx_gpio_get_pins_in, npcm7xx_gpio_set_pins_in, + NULL, &s->regs[NPCM7XX_GPIO_DIN]); } static const VMStateDescription vmstate_npcm7xx_gpio = { From patchwork Thu Apr 6 00:24:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joe Komlodi X-Patchwork-Id: 1765816 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Wed, 05 Apr 2023 17:24:53 -0700 (PDT) Date: Thu, 6 Apr 2023 00:24:47 +0000 In-Reply-To: <20230406002447.4046378-1-komlodi@google.com> Mime-Version: 1.0 References: <20230406002447.4046378-1-komlodi@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog Message-ID: <20230406002447.4046378-3-komlodi@google.com> Subject: [PATCH 2/2] hw/gpio/npcm7xx: Support qom-get on GPIO pin level From: Joe Komlodi To: qemu-devel@nongnu.org Cc: komlodi@google.com, wuhaotsh@google.com, kfting@nuvoton.com, qemu-arm@nongnu.org Received-SPF: pass client-ip=2607:f8b0:4864:20::449; envelope-from=3VREuZAcKClgAECBE386EE6B4.2ECG4CK-34L4BDED6DK.EH6@flex--komlodi.bounces.google.com; helo=mail-pf1-x449.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This goes along with input pin modification. In some cases it's easier to know the state of all pins on the GPIO controller before modifying input pins, rather than knowing only the state of input pins. For example over QMP: {"execute":"qom-get","arguments":{ "path":"/machine/soc/gpio[0]", "property":"gpio-pin-level" }} Signed-off-by: Joe Komlodi --- hw/gpio/npcm7xx_gpio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/gpio/npcm7xx_gpio.c b/hw/gpio/npcm7xx_gpio.c index 2a7be60d8d..58db3a8d64 100644 --- a/hw/gpio/npcm7xx_gpio.c +++ b/hw/gpio/npcm7xx_gpio.c @@ -399,6 +399,9 @@ static void npcm7xx_gpio_init(Object *obj) object_property_add(obj, "gpio-pins-in", "uint32", npcm7xx_gpio_get_pins_in, npcm7xx_gpio_set_pins_in, NULL, &s->regs[NPCM7XX_GPIO_DIN]); + + object_property_add_uint32_ptr(obj, "gpio-pin-level", &s->pin_level, + OBJ_PROP_FLAG_READ); } static const VMStateDescription vmstate_npcm7xx_gpio = {