From 61f663dfc1a091c7c04fa73666af52a42aaa083f Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Sun, 29 Jun 2014 16:16:59 +0200 Subject: [PATCH] brcmfmac: add device tree support for SDIO devices brcmfmac devices can use an out-of-band interrupt on a GPIO line. Currently this is specified using platform data. Add support for specifying out-of-band interrupt via device tree. Signed-off-by: Chen-Yu Tsai [arend@broadcom.com: conditionalize more of-code, use driver debug routines] Signed-off-by: Arend van Spriel [hdegoede@redhat.com: drop clk / reg_on gpio handling, as there is no consensus on how to handle this yet] Signed-off-by: Hans de Goede Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/brcmfmac/Makefile | 2 + .../net/wireless/brcm80211/brcmfmac/bcmsdh.c | 4 ++ drivers/net/wireless/brcm80211/brcmfmac/of.c | 56 +++++++++++++++++++ drivers/net/wireless/brcm80211/brcmfmac/of.h | 22 ++++++++ 4 files changed, 84 insertions(+) create mode 100644 drivers/net/wireless/brcm80211/brcmfmac/of.c create mode 100644 drivers/net/wireless/brcm80211/brcmfmac/of.h diff --git a/drivers/net/wireless/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/brcm80211/brcmfmac/Makefile index de0cff3df389..14e8a8d33520 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/Makefile +++ b/drivers/net/wireless/brcm80211/brcmfmac/Makefile @@ -46,3 +46,5 @@ brcmfmac-$(CONFIG_BRCMDBG) += \ dhd_dbg.o brcmfmac-$(CONFIG_BRCM_TRACING) += \ tracepoint.o +brcmfmac-$(CONFIG_OF) += \ + of.o diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c index f467cafe3e8f..dc2db47a1c73 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c @@ -42,6 +42,7 @@ #include "dhd_bus.h" #include "dhd_dbg.h" #include "sdio_host.h" +#include "of.h" #define SDIOH_API_ACCESS_RETRY_LIMIT 2 @@ -1044,6 +1045,9 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, sdiodev->dev = &sdiodev->func[1]->dev; sdiodev->pdata = brcmfmac_sdio_pdata; + if (!sdiodev->pdata) + brcmf_of_probe(sdiodev); + atomic_set(&sdiodev->suspend, false); init_waitqueue_head(&sdiodev->request_word_wait); init_waitqueue_head(&sdiodev->request_buffer_wait); diff --git a/drivers/net/wireless/brcm80211/brcmfmac/of.c b/drivers/net/wireless/brcm80211/brcmfmac/of.c new file mode 100644 index 000000000000..f05f5270fec1 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/of.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2014 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include +#include +#include +#include +#include +#include + +#include +#include "dhd_dbg.h" +#include "sdio_host.h" + +void brcmf_of_probe(struct brcmf_sdio_dev *sdiodev) +{ + struct device *dev = sdiodev->dev; + struct device_node *np = dev->of_node; + int irq; + u32 irqf; + u32 val; + + if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac")) + return; + + sdiodev->pdata = devm_kzalloc(dev, sizeof(*sdiodev->pdata), GFP_KERNEL); + if (!sdiodev->pdata) + return; + + irq = irq_of_parse_and_map(np, 0); + if (irq < 0) { + brcmf_err("interrupt could not be mapped: err=%d\n", irq); + devm_kfree(dev, sdiodev->pdata); + return; + } + irqf = irqd_get_trigger_type(irq_get_irq_data(irq)); + + sdiodev->pdata->oob_irq_supported = true; + sdiodev->pdata->oob_irq_nr = irq; + sdiodev->pdata->oob_irq_flags = irqf; + + if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) + sdiodev->pdata->drive_strength = val; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/of.h b/drivers/net/wireless/brcm80211/brcmfmac/of.h new file mode 100644 index 000000000000..5f7c3550deda --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/of.h @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2014 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifdef CONFIG_OF +void brcmf_of_probe(struct brcmf_sdio_dev *sdiodev); +#else +static void brcmf_of_probe(struct brcmf_sdio_dev *sdiodev) +{ +} +#endif /* CONFIG_OF */ -- 2.39.5