From: Jerome Pouiller <Jerome.Pouiller@silabs.com>
To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
Kalle Valo <kvalo@codeaurora.org>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"David S . Miller" <davem@davemloft.net>,
devicetree@vger.kernel.org, "Rob Herring" <robh+dt@kernel.org>,
linux-mmc@vger.kernel.org, "Pali Rohár" <pali@kernel.org>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Jérôme Pouiller" <jerome.pouiller@silabs.com>
Subject: [PATCH v9 08/24] wfx: add bus_sdio.c
Date: Tue, 11 Jan 2022 18:14:08 +0100 [thread overview]
Message-ID: <20220111171424.862764-9-Jerome.Pouiller@silabs.com> (raw)
In-Reply-To: <20220111171424.862764-1-Jerome.Pouiller@silabs.com>
From: Jérôme Pouiller <jerome.pouiller@silabs.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/net/wireless/silabs/wfx/bus_sdio.c | 283 +++++++++++++++++++++
1 file changed, 283 insertions(+)
create mode 100644 drivers/net/wireless/silabs/wfx/bus_sdio.c
diff --git a/drivers/net/wireless/silabs/wfx/bus_sdio.c b/drivers/net/wireless/silabs/wfx/bus_sdio.c
new file mode 100644
index 000000000000..ce873abe2740
--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/bus_sdio.c
@@ -0,0 +1,283 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * SDIO interface.
+ *
+ * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#include <linux/module.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/card.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/irq.h>
+#include <linux/align.h>
+
+#include "bus.h"
+#include "wfx.h"
+#include "hwio.h"
+#include "main.h"
+#include "bh.h"
+
+static const struct wfx_platform_data pdata_wf200 = {
+ .file_fw = "wfx/wfm_wf200",
+ .file_pds = "wfx/wf200.pds",
+};
+
+static const struct wfx_platform_data pdata_brd4001a = {
+ .file_fw = "wfx/wfm_wf200",
+ .file_pds = "wfx/brd4001a.pds",
+};
+
+static const struct wfx_platform_data pdata_brd8022a = {
+ .file_fw = "wfx/wfm_wf200",
+ .file_pds = "wfx/brd8022a.pds",
+};
+
+static const struct wfx_platform_data pdata_brd8023a = {
+ .file_fw = "wfx/wfm_wf200",
+ .file_pds = "wfx/brd8023a.pds",
+};
+
+/* Legacy DT don't use it */
+static const struct wfx_platform_data pdata_wfx_sdio = {
+ .file_fw = "wfm_wf200",
+ .file_pds = "wf200.pds",
+};
+
+struct wfx_sdio_priv {
+ struct sdio_func *func;
+ struct wfx_dev *core;
+ u8 buf_id_tx;
+ u8 buf_id_rx;
+ int of_irq;
+};
+
+static int wfx_sdio_copy_from_io(void *priv, unsigned int reg_id, void *dst, size_t count)
+{
+ struct wfx_sdio_priv *bus = priv;
+ unsigned int sdio_addr = reg_id << 2;
+ int ret;
+
+ WARN(reg_id > 7, "chip only has 7 registers");
+ WARN(!IS_ALIGNED((uintptr_t)dst, 4), "unaligned buffer address");
+ WARN(!IS_ALIGNED(count, 4), "unaligned buffer size");
+
+ /* Use queue mode buffers */
+ if (reg_id == WFX_REG_IN_OUT_QUEUE)
+ sdio_addr |= (bus->buf_id_rx + 1) << 7;
+ ret = sdio_memcpy_fromio(bus->func, dst, sdio_addr, count);
+ if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE)
+ bus->buf_id_rx = (bus->buf_id_rx + 1) % 4;
+
+ return ret;
+}
+
+static int wfx_sdio_copy_to_io(void *priv, unsigned int reg_id, const void *src, size_t count)
+{
+ struct wfx_sdio_priv *bus = priv;
+ unsigned int sdio_addr = reg_id << 2;
+ int ret;
+
+ WARN(reg_id > 7, "chip only has 7 registers");
+ WARN(!IS_ALIGNED((uintptr_t)src, 4), "unaligned buffer address");
+ WARN(!IS_ALIGNED(count, 4), "unaligned buffer size");
+
+ /* Use queue mode buffers */
+ if (reg_id == WFX_REG_IN_OUT_QUEUE)
+ sdio_addr |= bus->buf_id_tx << 7;
+ /* FIXME: discards 'const' qualifier for src */
+ ret = sdio_memcpy_toio(bus->func, sdio_addr, (void *)src, count);
+ if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE)
+ bus->buf_id_tx = (bus->buf_id_tx + 1) % 32;
+
+ return ret;
+}
+
+static void wfx_sdio_lock(void *priv)
+{
+ struct wfx_sdio_priv *bus = priv;
+
+ sdio_claim_host(bus->func);
+}
+
+static void wfx_sdio_unlock(void *priv)
+{
+ struct wfx_sdio_priv *bus = priv;
+
+ sdio_release_host(bus->func);
+}
+
+static void wfx_sdio_irq_handler(struct sdio_func *func)
+{
+ struct wfx_sdio_priv *bus = sdio_get_drvdata(func);
+
+ wfx_bh_request_rx(bus->core);
+}
+
+static irqreturn_t wfx_sdio_irq_handler_ext(int irq, void *priv)
+{
+ struct wfx_sdio_priv *bus = priv;
+
+ sdio_claim_host(bus->func);
+ wfx_bh_request_rx(bus->core);
+ sdio_release_host(bus->func);
+ return IRQ_HANDLED;
+}
+
+static int wfx_sdio_irq_subscribe(void *priv)
+{
+ struct wfx_sdio_priv *bus = priv;
+ u32 flags;
+ int ret;
+ u8 cccr;
+
+ if (!bus->of_irq) {
+ sdio_claim_host(bus->func);
+ ret = sdio_claim_irq(bus->func, wfx_sdio_irq_handler);
+ sdio_release_host(bus->func);
+ return ret;
+ }
+
+ flags = irq_get_trigger_type(bus->of_irq);
+ if (!flags)
+ flags = IRQF_TRIGGER_HIGH;
+ flags |= IRQF_ONESHOT;
+ ret = devm_request_threaded_irq(&bus->func->dev, bus->of_irq, NULL,
+ wfx_sdio_irq_handler_ext, flags, "wfx", bus);
+ if (ret)
+ return ret;
+ sdio_claim_host(bus->func);
+ cccr = sdio_f0_readb(bus->func, SDIO_CCCR_IENx, NULL);
+ cccr |= BIT(0);
+ cccr |= BIT(bus->func->num);
+ sdio_f0_writeb(bus->func, cccr, SDIO_CCCR_IENx, NULL);
+ sdio_release_host(bus->func);
+ return 0;
+}
+
+static int wfx_sdio_irq_unsubscribe(void *priv)
+{
+ struct wfx_sdio_priv *bus = priv;
+ int ret;
+
+ if (bus->of_irq)
+ devm_free_irq(&bus->func->dev, bus->of_irq, bus);
+ sdio_claim_host(bus->func);
+ ret = sdio_release_irq(bus->func);
+ sdio_release_host(bus->func);
+ return ret;
+}
+
+static size_t wfx_sdio_align_size(void *priv, size_t size)
+{
+ struct wfx_sdio_priv *bus = priv;
+
+ return sdio_align_size(bus->func, size);
+}
+
+static const struct wfx_hwbus_ops wfx_sdio_hwbus_ops = {
+ .copy_from_io = wfx_sdio_copy_from_io,
+ .copy_to_io = wfx_sdio_copy_to_io,
+ .irq_subscribe = wfx_sdio_irq_subscribe,
+ .irq_unsubscribe = wfx_sdio_irq_unsubscribe,
+ .lock = wfx_sdio_lock,
+ .unlock = wfx_sdio_unlock,
+ .align_size = wfx_sdio_align_size,
+};
+
+static const struct of_device_id wfx_sdio_of_match[] = {
+ { .compatible = "silabs,wf200", .data = &pdata_wf200 },
+ { .compatible = "silabs,brd4001a", .data = &pdata_brd4001a },
+ { .compatible = "silabs,brd8022a", .data = &pdata_brd8022a },
+ { .compatible = "silabs,brd8023a", .data = &pdata_brd8023a },
+ { .compatible = "silabs,wfx-sdio", .data = &pdata_wfx_sdio },
+ { },
+};
+MODULE_DEVICE_TABLE(of, wfx_sdio_of_match);
+
+static int wfx_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
+{
+ const struct wfx_platform_data *pdata = of_device_get_match_data(&func->dev);
+ struct device_node *np = func->dev.of_node;
+ struct wfx_sdio_priv *bus;
+ int ret;
+
+ if (func->num != 1) {
+ dev_err(&func->dev, "SDIO function number is %d while it should always be 1 (unsupported chip?)\n",
+ func->num);
+ return -ENODEV;
+ }
+
+ if (!pdata) {
+ dev_warn(&func->dev, "no compatible device found in DT\n");
+ return -ENODEV;
+ }
+
+ bus = devm_kzalloc(&func->dev, sizeof(*bus), GFP_KERNEL);
+ if (!bus)
+ return -ENOMEM;
+
+ bus->func = func;
+ bus->of_irq = irq_of_parse_and_map(np, 0);
+ sdio_set_drvdata(func, bus);
+ func->card->quirks |= MMC_QUIRK_LENIENT_FN0 |
+ MMC_QUIRK_BLKSZ_FOR_BYTE_MODE |
+ MMC_QUIRK_BROKEN_BYTE_MODE_512;
+
+ sdio_claim_host(func);
+ ret = sdio_enable_func(func);
+ /* Block of 64 bytes is more efficient than 512B for frame sizes < 4k */
+ sdio_set_block_size(func, 64);
+ sdio_release_host(func);
+ if (ret)
+ return ret;
+
+ bus->core = wfx_init_common(&func->dev, pdata, &wfx_sdio_hwbus_ops, bus);
+ if (!bus->core) {
+ ret = -EIO;
+ goto sdio_release;
+ }
+
+ ret = wfx_probe(bus->core);
+ if (ret)
+ goto sdio_release;
+
+ return 0;
+
+sdio_release:
+ sdio_claim_host(func);
+ sdio_disable_func(func);
+ sdio_release_host(func);
+ return ret;
+}
+
+static void wfx_sdio_remove(struct sdio_func *func)
+{
+ struct wfx_sdio_priv *bus = sdio_get_drvdata(func);
+
+ wfx_release(bus->core);
+ sdio_claim_host(func);
+ sdio_disable_func(func);
+ sdio_release_host(func);
+}
+
+static const struct sdio_device_id wfx_sdio_ids[] = {
+ { SDIO_DEVICE(SDIO_VENDOR_ID_SILABS, SDIO_DEVICE_ID_SILABS_WF200) },
+ { },
+};
+MODULE_DEVICE_TABLE(sdio, wfx_sdio_ids);
+
+struct sdio_driver wfx_sdio_driver = {
+ .name = "wfx-sdio",
+ .id_table = wfx_sdio_ids,
+ .probe = wfx_sdio_probe,
+ .remove = wfx_sdio_remove,
+ .drv = {
+ .owner = THIS_MODULE,
+ .of_match_table = wfx_sdio_of_match,
+ }
+};
--
2.34.1
next prev parent reply other threads:[~2022-01-11 17:16 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 17:14 [PATCH v9 00/24] wfx: get out from the staging area Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 01/24] mmc: sdio: add SDIO IDs for Silabs WF200 chip Jerome Pouiller
2022-01-12 10:58 ` Ulf Hansson
2022-01-12 12:45 ` Kalle Valo
2022-01-11 17:14 ` [PATCH v9 02/24] dt-bindings: introduce silabs,wfx.yaml Jerome Pouiller
2022-01-11 20:49 ` Rob Herring
2022-01-11 22:19 ` Rob Herring
2022-01-12 9:51 ` Jérôme Pouiller
2022-01-11 17:14 ` [PATCH v9 03/24] wfx: add Makefile/Kconfig Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 04/24] wfx: add wfx.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 05/24] wfx: add main.c/main.h Jerome Pouiller
2022-01-26 8:20 ` Jérôme Pouiller
2022-02-10 14:20 ` Kalle Valo
2022-02-10 14:41 ` Jérôme Pouiller
2022-02-10 14:51 ` Kalle Valo
2022-02-10 15:13 ` Jérôme Pouiller
2022-02-10 16:25 ` Kalle Valo
2022-02-10 16:37 ` Jérôme Pouiller
2022-02-11 7:08 ` Kalle Valo
2022-02-10 14:23 ` Pali Rohár
2022-01-11 17:14 ` [PATCH v9 06/24] wfx: add bus.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 07/24] wfx: add bus_spi.c Jerome Pouiller
2022-01-11 17:14 ` Jerome Pouiller [this message]
2022-01-12 10:51 ` [PATCH v9 08/24] wfx: add bus_sdio.c Ulf Hansson
2022-01-12 10:58 ` Pali Rohár
2022-01-12 11:18 ` Jérôme Pouiller
2022-01-12 11:43 ` Pali Rohár
2022-01-12 12:06 ` Greg Kroah-Hartman
2022-01-12 12:14 ` Pali Rohár
2022-01-12 15:03 ` Ulf Hansson
2022-01-12 16:45 ` Jérôme Pouiller
2022-01-12 17:48 ` Pali Rohár
2022-01-12 18:23 ` Jérôme Pouiller
2022-01-13 12:07 ` Ulf Hansson
2022-01-11 17:14 ` [PATCH v9 09/24] wfx: add hwio.c/hwio.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 10/24] wfx: add fwio.c/fwio.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 11/24] wfx: add bh.c/bh.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 12/24] wfx: add hif_api_*.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 13/24] wfx: add hif_tx*.c/hif_tx*.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 14/24] wfx: add key.c/key.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 15/24] wfx: add hif_rx.c/hif_rx.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 16/24] wfx: add data_rx.c/data_rx.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 17/24] wfx: add queue.c/queue.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 18/24] wfx: add data_tx.c/data_tx.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 19/24] wfx: add sta.c/sta.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 20/24] wfx: add scan.c/scan.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 21/24] wfx: add debug.c/debug.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 22/24] wfx: add traces.h Jerome Pouiller
2022-01-11 17:14 ` [PATCH v9 23/24] wfx: remove from the staging area Jerome Pouiller
2022-01-12 7:49 ` Kalle Valo
2022-01-12 9:32 ` Jérôme Pouiller
2022-01-12 12:46 ` Kalle Valo
2022-01-11 17:14 ` [PATCH v9 24/24] wfx: get out " Jerome Pouiller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220111171424.862764-9-Jerome.Pouiller@silabs.com \
--to=jerome.pouiller@silabs.com \
--cc=davem@davemloft.net \
--cc=devel@driverdev.osuosl.org \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=kvalo@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pali@kernel.org \
--cc=robh+dt@kernel.org \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).