Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965002AbbGVNGc (ORCPT ); Wed, 22 Jul 2015 09:06:32 -0400 Received: from mail-la0-f51.google.com ([209.85.215.51]:35222 "EHLO mail-la0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933748AbbGVNG0 (ORCPT ); Wed, 22 Jul 2015 09:06:26 -0400 From: Rabin Vincent To: linus.walleij@linaro.org, gnurou@gmail.com Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Rabin Vincent , devicetree@vger.kernel.org Subject: [PATCH 3/3] gpio: etraxfs: add support for ARTPEC-3 Date: Wed, 22 Jul 2015 15:05:19 +0200 Message-Id: <1437570319-25297-3-git-send-email-rabin@rab.in> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1437570319-25297-1-git-send-email-rabin@rab.in> References: <1437570319-25297-1-git-send-email-rabin@rab.in> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3935 Lines: 134 Add support for the GIO block in the ARTPEC-3 SoC. The basic functionality is essentialy the same as the version in the ETRAX FS, except for a different set of ports, including a read-only port. Cc: devicetree@vger.kernel.org Signed-off-by: Rabin Vincent --- .../devicetree/bindings/gpio/gpio-etraxfs.txt | 3 +- drivers/gpio/gpio-etraxfs.c | 66 ++++++++++++++++++++-- 2 files changed, 62 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/gpio/gpio-etraxfs.txt b/Documentation/devicetree/bindings/gpio/gpio-etraxfs.txt index abf4db7..170194a 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-etraxfs.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-etraxfs.txt @@ -2,8 +2,9 @@ Axis ETRAX FS General I/O controller bindings Required properties: -- compatible: +- compatible: one of: - "axis,etraxfs-gio" + - "axis,artpec3-gio" - reg: Physical base address and length of the controller's registers. - #gpio-cells: Should be 3 - The first cell is the gpio offset number. diff --git a/drivers/gpio/gpio-etraxfs.c b/drivers/gpio/gpio-etraxfs.c index c1ce80d..7276891 100644 --- a/drivers/gpio/gpio-etraxfs.c +++ b/drivers/gpio/gpio-etraxfs.c @@ -26,6 +26,17 @@ #define ETRAX_FS_r_pe_din 84 #define ETRAX_FS_rw_pe_oe 88 +#define ARTPEC3_r_pa_din 0 +#define ARTPEC3_rw_pa_dout 4 +#define ARTPEC3_rw_pa_oe 8 +#define ARTPEC3_r_pb_din 44 +#define ARTPEC3_rw_pb_dout 48 +#define ARTPEC3_rw_pb_oe 52 +#define ARTPEC3_r_pc_din 88 +#define ARTPEC3_rw_pc_dout 92 +#define ARTPEC3_rw_pc_oe 96 +#define ARTPEC3_r_pd_din 116 + struct etraxfs_gpio_port { const char *label; unsigned int oe; @@ -82,6 +93,40 @@ static const struct etraxfs_gpio_info etraxfs_gpio_etraxfs = { .ports = etraxfs_gpio_etraxfs_ports, }; +static const struct etraxfs_gpio_port etraxfs_gpio_artpec3_ports[] = { + { + .label = "A", + .ngpio = 32, + .oe = ARTPEC3_rw_pa_oe, + .dout = ARTPEC3_rw_pa_dout, + .din = ARTPEC3_r_pa_din, + }, + { + .label = "B", + .ngpio = 32, + .oe = ARTPEC3_rw_pb_oe, + .dout = ARTPEC3_rw_pb_dout, + .din = ARTPEC3_r_pb_din, + }, + { + .label = "C", + .ngpio = 16, + .oe = ARTPEC3_rw_pc_oe, + .dout = ARTPEC3_rw_pc_dout, + .din = ARTPEC3_r_pc_din, + }, + { + .label = "D", + .ngpio = 32, + .din = ARTPEC3_r_pd_din, + }, +}; + +static const struct etraxfs_gpio_info etraxfs_gpio_artpec3 = { + .num_ports = ARRAY_SIZE(etraxfs_gpio_artpec3_ports), + .ports = etraxfs_gpio_artpec3_ports, +}; + static int etraxfs_gpio_of_xlate(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, u32 *flags) @@ -101,6 +146,10 @@ static const struct of_device_id etraxfs_gpio_of_table[] = { .compatible = "axis,etraxfs-gio", .data = &etraxfs_gpio_etraxfs, }, + { + .compatible = "axis,artpec3-gio", + .data = &etraxfs_gpio_artpec3, + }, {}, }; @@ -133,14 +182,19 @@ static int etraxfs_gpio_probe(struct platform_device *pdev) for (i = 0; i < info->num_ports; i++) { struct bgpio_chip *bgc = &chips[i]; const struct etraxfs_gpio_port *port = &info->ports[i]; + unsigned long flags = BGPIOF_READ_OUTPUT_REG_SET; + void __iomem *dat = regs + port->din; + void __iomem *set = regs + port->dout; + void __iomem *dirout = regs + port->oe; + + if (dirout == set) { + dirout = set = NULL; + flags = BGPIOF_NO_OUTPUT; + } ret = bgpio_init(bgc, dev, 4, - regs + port->din, /* dat */ - regs + port->dout, /* set */ - NULL, /* clr */ - regs + port->oe, /* dirout */ - NULL, /* dirin */ - BGPIOF_READ_OUTPUT_REG_SET); + dat, set, NULL, dirout, NULL, + flags); if (ret) return ret; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/