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Sun, 18 Feb 2024 17:17:58 -0800 (PST) From: Sergey Kambalin X-Google-Original-From: Sergey Kambalin To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, Sergey Kambalin Subject: [PATCH v5 08/41] Connect SD controller to BCM2838 GPIO Date: Sun, 18 Feb 2024 19:17:06 -0600 Message-Id: <20240219011739.2316619-9-sergey.kambalin@auriga.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240219011739.2316619-1-sergey.kambalin@auriga.com> References: <20240219011739.2316619-1-sergey.kambalin@auriga.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1135; envelope-from=serg.oker@gmail.com; helo=mail-yw1-x1135.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1708305819300100005 Content-Type: text/plain; charset="utf-8" Signed-off-by: Sergey Kambalin Reviewed-by: Peter Maydell --- hw/gpio/bcm2838_gpio.c | 52 +++++++++++++++++++++++++++++++++- include/hw/gpio/bcm2838_gpio.h | 5 ++++ 2 files changed, 56 insertions(+), 1 deletion(-) diff --git a/hw/gpio/bcm2838_gpio.c b/hw/gpio/bcm2838_gpio.c index 69d15dbb49..2ddf62f695 100644 --- a/hw/gpio/bcm2838_gpio.c +++ b/hw/gpio/bcm2838_gpio.c @@ -17,6 +17,7 @@ #include "qapi/error.h" #include "hw/sysbus.h" #include "migration/vmstate.h" +#include "hw/sd/sd.h" #include "hw/gpio/bcm2838_gpio.h" #include "hw/irq.h" =20 @@ -63,6 +64,16 @@ =20 #define BYTES_IN_WORD 4 =20 +/* bcm,function property */ +#define BCM2838_FSEL_GPIO_IN 0 +#define BCM2838_FSEL_GPIO_OUT 1 +#define BCM2838_FSEL_ALT5 2 +#define BCM2838_FSEL_ALT4 3 +#define BCM2838_FSEL_ALT0 4 +#define BCM2838_FSEL_ALT1 5 +#define BCM2838_FSEL_ALT2 6 +#define BCM2838_FSEL_ALT3 7 + static uint32_t gpfsel_get(BCM2838GpioState *s, uint8_t reg) { int i; @@ -86,6 +97,31 @@ static void gpfsel_set(BCM2838GpioState *s, uint8_t reg,= uint32_t value) s->fsel[index] =3D fsel; } } + + /* SD controller selection (48-53) */ + if (s->sd_fsel !=3D BCM2838_FSEL_GPIO_IN + && (s->fsel[48] =3D=3D BCM2838_FSEL_GPIO_IN) + && (s->fsel[49] =3D=3D BCM2838_FSEL_GPIO_IN) + && (s->fsel[50] =3D=3D BCM2838_FSEL_GPIO_IN) + && (s->fsel[51] =3D=3D BCM2838_FSEL_GPIO_IN) + && (s->fsel[52] =3D=3D BCM2838_FSEL_GPIO_IN) + && (s->fsel[53] =3D=3D BCM2838_FSEL_GPIO_IN) + ) { + /* SDHCI controller selected */ + sdbus_reparent_card(s->sdbus_sdhost, s->sdbus_sdhci); + s->sd_fsel =3D BCM2838_FSEL_GPIO_IN; + } else if (s->sd_fsel !=3D BCM2838_FSEL_ALT0 + && (s->fsel[48] =3D=3D BCM2838_FSEL_ALT0) /* SD_CLK_R */ + && (s->fsel[49] =3D=3D BCM2838_FSEL_ALT0) /* SD_CMD_R */ + && (s->fsel[50] =3D=3D BCM2838_FSEL_ALT0) /* SD_DATA0_R */ + && (s->fsel[51] =3D=3D BCM2838_FSEL_ALT0) /* SD_DATA1_R */ + && (s->fsel[52] =3D=3D BCM2838_FSEL_ALT0) /* SD_DATA2_R */ + && (s->fsel[53] =3D=3D BCM2838_FSEL_ALT0) /* SD_DATA3_R */ + ) { + /* SDHost controller selected */ + sdbus_reparent_card(s->sdbus_sdhci, s->sdbus_sdhost); + s->sd_fsel =3D BCM2838_FSEL_ALT0; + } } =20 static int gpfsel_is_out(BCM2838GpioState *s, int index) @@ -266,6 +302,11 @@ static void bcm2838_gpio_reset(DeviceState *dev) =20 memset(s->fsel, 0, sizeof(s->fsel)); =20 + s->sd_fsel =3D 0; + + /* SDHCI is selected by default */ + sdbus_reparent_card(&s->sdbus, s->sdbus_sdhci); + s->lev0 =3D 0; s->lev1 =3D 0; =20 @@ -304,6 +345,8 @@ static void bcm2838_gpio_init(Object *obj) DeviceState *dev =3D DEVICE(obj); SysBusDevice *sbd =3D SYS_BUS_DEVICE(obj); =20 + qbus_init(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS, DEVICE(s), "sd-bus= "); + memory_region_init_io(&s->iomem, obj, &bcm2838_gpio_ops, s, "bcm2838_gpio", BCM2838_GPIO_REGS_SIZE); sysbus_init_mmio(sbd, &s->iomem); @@ -312,7 +355,14 @@ static void bcm2838_gpio_init(Object *obj) =20 static void bcm2838_gpio_realize(DeviceState *dev, Error **errp) { - /* Temporary stub. Do nothing */ + BCM2838GpioState *s =3D BCM2838_GPIO(dev); + Object *obj; + + obj =3D object_property_get_link(OBJECT(dev), "sdbus-sdhci", &error_ab= ort); + s->sdbus_sdhci =3D SD_BUS(obj); + + obj =3D object_property_get_link(OBJECT(dev), "sdbus-sdhost", &error_a= bort); + s->sdbus_sdhost =3D SD_BUS(obj); } =20 static void bcm2838_gpio_class_init(ObjectClass *klass, void *data) diff --git a/include/hw/gpio/bcm2838_gpio.h b/include/hw/gpio/bcm2838_gpio.h index 06d48e0c19..f2a57a697f 100644 --- a/include/hw/gpio/bcm2838_gpio.h +++ b/include/hw/gpio/bcm2838_gpio.h @@ -14,6 +14,7 @@ #ifndef BCM2838_GPIO_H #define BCM2838_GPIO_H =20 +#include "hw/sd/sd.h" #include "hw/sysbus.h" #include "qom/object.h" =20 @@ -29,6 +30,10 @@ struct BCM2838GpioState { =20 MemoryRegion iomem; =20 + /* SDBus selector */ + SDBus sdbus; + SDBus *sdbus_sdhci; + SDBus *sdbus_sdhost; =20 uint8_t fsel[BCM2838_GPIO_NUM]; uint32_t lev0, lev1; --=20 2.34.1