From: Lubomir Rintel <lkundrak@v3.sk>
To: Olof Johansson <olof@lixom.net>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, Jason Cooper <jason@lakedaemon.net>,
Stephen Boyd <sboyd@kernel.org>, Marc Zyngier <maz@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Russell King <linux@armlinux.org.uk>,
Kishon Vijay Abraham I <kishon@ti.com>,
Lubomir Rintel <lkundrak@v3.sk>, Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org, Pavel Machek <pavel@ucw.cz>,
Thomas Gleixner <tglx@linutronix.de>,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 06/20] irqchip/mmp: do not use of_address_to_resource() to get mux regs
Date: Thu, 22 Aug 2019 11:26:29 +0200 [thread overview]
Message-ID: <20190822092643.593488-7-lkundrak@v3.sk> (raw)
In-Reply-To: <20190822092643.593488-1-lkundrak@v3.sk>
The "regs" property of the "mrvl,mmp2-mux-intc" devices are silly. They
are offsets from intc's base, not addresses on the parent bus. At this
point it probably can't be fixed.
On an OLPC XO-1.75 machine, the muxes are children of the intc, not the
axi bus, and thus of_address_to_resource() won't work. We should treat
the values as mere integers as opposed to bus addresses.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
---
Changes since v4 of "MMP platform fixes" set:
- Add a comment, as suggested by Pavel
Changes since v1:
- Fix up typoes in the comment
- Do not allow the regs property be larger than the bindings document.
drivers/irqchip/irq-mmp.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/irqchip/irq-mmp.c b/drivers/irqchip/irq-mmp.c
index 14618dc0bd396..e41e47ab71d3b 100644
--- a/drivers/irqchip/irq-mmp.c
+++ b/drivers/irqchip/irq-mmp.c
@@ -424,9 +424,9 @@ IRQCHIP_DECLARE(mmp2_intc, "mrvl,mmp2-intc", mmp2_of_init);
static int __init mmp2_mux_of_init(struct device_node *node,
struct device_node *parent)
{
- struct resource res;
int i, ret, irq, j = 0;
u32 nr_irqs, mfp_irq;
+ u32 reg[4];
if (!parent)
return -ENODEV;
@@ -438,18 +438,22 @@ static int __init mmp2_mux_of_init(struct device_node *node,
pr_err("Not found mrvl,intc-nr-irqs property\n");
return -EINVAL;
}
- ret = of_address_to_resource(node, 0, &res);
+
+ /*
+ * For historical reasons, the "regs" property of the
+ * mrvl,mmp2-mux-intc is not a regular "regs" property containing
+ * addresses on the parent bus, but offsets from the intc's base.
+ * That is why we can't use of_address_to_resource() here.
+ */
+ ret = of_property_read_variable_u32_array(node, "reg", reg,
+ ARRAY_SIZE(reg),
+ ARRAY_SIZE(reg));
if (ret < 0) {
pr_err("Not found reg property\n");
return -EINVAL;
}
- icu_data[i].reg_status = mmp_icu_base + res.start;
- ret = of_address_to_resource(node, 1, &res);
- if (ret < 0) {
- pr_err("Not found reg property\n");
- return -EINVAL;
- }
- icu_data[i].reg_mask = mmp_icu_base + res.start;
+ icu_data[i].reg_status = mmp_icu_base + reg[0];
+ icu_data[i].reg_mask = mmp_icu_base + reg[2];
icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
if (!icu_data[i].cascade_irq)
return -EINVAL;
--
2.21.0
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next prev parent reply other threads:[~2019-08-22 9:36 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-22 9:26 [PATCH v2 00/20] Initial support for Marvell MMP3 SoC Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 01/20] dt-bindings: arm: cpu: Add Marvell MMP3 SMP enable method Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 02/20] dt-bindings: arm: Convert Marvell MMP board/soc bindings to json-schema Lubomir Rintel
2019-08-27 11:59 ` Rob Herring
2019-08-27 13:23 ` Lubomir Rintel
2019-08-27 13:36 ` Rob Herring
2019-08-22 9:26 ` [PATCH v2 03/20] dt-bindings: arm: mrvl: Document MMP3 compatible string Lubomir Rintel
2019-08-27 12:00 ` Rob Herring
2019-08-22 9:26 ` [PATCH v2 04/20] dt-bindings: mrvl, intc: Add a MMP3 interrupt controller Lubomir Rintel
2019-08-27 22:23 ` [PATCH v2 04/20] dt-bindings: mrvl,intc: " Rob Herring
2019-08-22 9:26 ` [PATCH v2 05/20] dt-bindings: phy-mmp3-usb: Add bindings Lubomir Rintel
2019-08-27 22:24 ` Rob Herring
2019-08-22 9:26 ` Lubomir Rintel [this message]
2020-03-09 16:25 ` [PATCH v2 06/20] irqchip/mmp: do not use of_address_to_resource() to get mux regs Rob Herring
2020-03-09 16:28 ` Rob Herring
2019-08-22 9:26 ` [PATCH v2 07/20] irqchip/mmp: add missing chained_irq_{enter,exit}() Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 08/20] irqchip/mmp: mask off interrupts from other cores Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 09/20] irqchip/mmp: coexist with GIC root IRQ controller Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 10/20] ARM: l2c: add definition for FWA in PL310 aux register Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 11/20] ARM: mmp: don't select CACHE_TAUROS2 on all ARCH_MMP Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 12/20] ARM: mmp: map the PGU as well Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 13/20] ARM: mmp: DT: convert timer driver to use TIMER_OF_DECLARE Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 14/20] ARM: mmp: define MMP_CHIPID by the means of CIU_REG() Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 15/20] ARM: mmp: add support for MMP3 SoC Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 16/20] ARM: mmp: add SMP support Lubomir Rintel
2019-08-22 16:36 ` Florian Fainelli
2019-08-23 7:13 ` Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 17/20] ARM: mmp: move cputype.h to include/linux/soc/ Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 18/20] ARM: mmp: remove MMP3 USB PHY registers from regs-usb.h Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 19/20] phy: phy-mmp3-usb: add a new driver Lubomir Rintel
2019-08-22 9:26 ` [PATCH v2 20/20] ARM: dts: mmp3: Add MMP3 SoC dts file Lubomir Rintel
2019-08-22 10:31 ` [PATCH v2 00/20] Initial support for Marvell MMP3 SoC Marc Zyngier
2019-08-22 16:23 ` Olof Johansson
2019-08-23 7:21 ` Lubomir Rintel
2019-08-23 9:42 ` Marc Zyngier
2019-08-26 11:59 ` Lubomir Rintel
2019-08-30 14:26 ` Marc Zyngier
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