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received-spf: None (protection.outlook.com: sifive.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: Hnhu0R/zc1evdBv3x+j/MfQUC1Co35W6xtBVdfuTBUZn5Q1E+47vGHsw2+QgI6RYeTOd32MOsWp1fLlGMStqyhaqb/YGx6pPM4dsSuHiQtsdYhW2xFLyr6dSCvaVfgY1IbF00divfO0pu5opLoRZvF3UM+Y+Wif2+H+hedoGOLEF4d9K6de7gAuE/Np10a1lvsZ0aDdZuBC8zp4akmYtKq+He3rf2ygDXk9XhlqhUPL2mkRhWygbaW4LVuL4cvpK2D4lBRwFPW0Rv/0I8g1wYt8+fr/QxBqZWDPk0YyXI+W27gWx6UiPseVoFI2/wrAMEE7mWZvurx5kzaTSmGJvowic4mMBR6+kFev3R2kQmoq8ZpsuG9JlPyfCsB80zYWB8kskOlSsn1zvMwLQiaSrQmBNb7i5pRduYlHB92gezT+LczFZYcgql9OZFMWvBcyZ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: sifive.com X-MS-Exchange-CrossTenant-Network-Message-Id: 789e57ac-365a-4bad-51ab-08d76d872f55 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Nov 2019 06:59:28.1405 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: tYSXgLfmitjcQNMWvdpzCI7nG7WszDmn7+ygAZa2DdVRnPr+nAFQgmPH3TF6hZRjZ/mAbppJA0gaGrIRvhxvWg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR13MB3415 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add support for hierarchy irq domains. This is needed as pre-requisite for gpio-sifive driver. Signed-off-by: Yash Shah --- drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-sifive-plic.c | 30 ++++++++++++++++++++++++++---- 2 files changed, 27 insertions(+), 4 deletions(-) diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index ccbb897..a398552 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -488,6 +488,7 @@ endmenu config SIFIVE_PLIC bool "SiFive Platform-Level Interrupt Controller" depends on RISCV + select IRQ_DOMAIN_HIERARCHY help This enables support for the PLIC chip found in SiFive (and potentially other) RISC-V systems. The PLIC controls devices diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive= -plic.c index 7d0a12f..750e366 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -154,15 +154,37 @@ static struct irq_chip plic_chip =3D { static int plic_irqdomain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq) { - irq_set_chip_and_handler(irq, &plic_chip, handle_fasteoi_irq); - irq_set_chip_data(irq, NULL); + irq_domain_set_info(d, irq, hwirq, &plic_chip, d->host_data, + handle_fasteoi_irq, NULL, NULL); irq_set_noprobe(irq); return 0; } =20 +static int plic_irq_domain_alloc(struct irq_domain *domain, unsigned int v= irq, + unsigned int nr_irqs, void *arg) +{ + int i, ret; + irq_hw_number_t hwirq; + unsigned int type =3D IRQ_TYPE_NONE; + struct irq_fwspec *fwspec =3D arg; + + ret =3D irq_domain_translate_onecell(domain, fwspec, &hwirq, &type); + if (ret) + return ret; + + for (i =3D 0; i < nr_irqs; i++) { + ret =3D plic_irqdomain_map(domain, virq + i, hwirq + i); + if (ret) + return ret; + } + + return 0; +} + static const struct irq_domain_ops plic_irqdomain_ops =3D { - .map =3D plic_irqdomain_map, - .xlate =3D irq_domain_xlate_onecell, + .translate =3D irq_domain_translate_onecell, + .alloc =3D plic_irq_domain_alloc, + .free =3D irq_domain_free_irqs_top, }; =20 static struct irq_domain *plic_irqdomain; --=20 2.7.4