Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754037AbdCOPjo (ORCPT ); Wed, 15 Mar 2017 11:39:44 -0400 Received: from mx0b-001ae601.pphosted.com ([67.231.152.168]:46973 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753832AbdCOPiv (ORCPT ); Wed, 15 Mar 2017 11:38:51 -0400 Authentication-Results: ppops.net; spf=none smtp.mailfrom=ckeepax@opensource.wolfsonmicro.com From: Charles Keepax To: CC: , , , , , , , Subject: [PATCH v4 1/3] mfd: wm831x: Add basic device tree binding Date: Wed, 15 Mar 2017 15:39:42 +0000 Message-ID: <1489592384-11510-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703150120 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 9288 Lines: 295 Add the basic ability to register the device through device tree, more work is needed to get each individual sub-driver functioning correctly but this is enough to get the device to probe from device tree. Signed-off-by: Charles Keepax --- Changes since v3: - No longer check return of of_match_device it should always match - Move calls of of_match_device from helper function in wm831x-core into both wm831x-i2c and wm831x-spi - Move copy of pdata from wm831x-core into both wm831x-i2c and wm831x-spi - Put device type into struct wm831x and remove the argument to that effect passed to wm831x_device_init Thanks, Charles drivers/mfd/wm831x-core.c | 29 +++++++++++++++++++++-------- drivers/mfd/wm831x-i2c.c | 21 ++++++++++++++++++++- drivers/mfd/wm831x-irq.c | 6 +++--- drivers/mfd/wm831x-spi.c | 20 ++++++++++++++++++-- include/linux/mfd/wm831x/core.h | 9 ++++++++- 5 files changed, 70 insertions(+), 15 deletions(-) diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c index 3e0e99e..13a4c11 100644 --- a/drivers/mfd/wm831x-core.c +++ b/drivers/mfd/wm831x-core.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include #include @@ -1613,12 +1615,24 @@ struct regmap_config wm831x_regmap_config = { }; EXPORT_SYMBOL_GPL(wm831x_regmap_config); +const struct of_device_id wm831x_of_match[] = { + { .compatible = "wlf,wm8310", .data = (void *)WM8310 }, + { .compatible = "wlf,wm8311", .data = (void *)WM8311 }, + { .compatible = "wlf,wm8312", .data = (void *)WM8312 }, + { .compatible = "wlf,wm8320", .data = (void *)WM8320 }, + { .compatible = "wlf,wm8321", .data = (void *)WM8321 }, + { .compatible = "wlf,wm8325", .data = (void *)WM8325 }, + { .compatible = "wlf,wm8326", .data = (void *)WM8326 }, + { }, +}; +EXPORT_SYMBOL_GPL(wm831x_of_match); + /* * Instantiate the generic non-control parts of the device. */ -int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq) +int wm831x_device_init(struct wm831x *wm831x, int irq) { - struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); + struct wm831x_pdata *pdata = &wm831x->pdata; int rev, wm831x_num; enum wm831x_parent parent; int ret, i; @@ -1627,8 +1641,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq) mutex_init(&wm831x->key_lock); dev_set_drvdata(wm831x->dev, wm831x); - if (pdata) - wm831x->soft_shutdown = pdata->soft_shutdown; + wm831x->soft_shutdown = pdata->soft_shutdown; ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID); if (ret < 0) { @@ -1663,7 +1676,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq) */ if (ret == 0) { dev_info(wm831x->dev, "Device is an engineering sample\n"); - ret = id; + ret = wm831x->type; } switch (ret) { @@ -1736,9 +1749,9 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq) /* This will need revisiting in future but is OK for all * current parts. */ - if (parent != id) - dev_warn(wm831x->dev, "Device was registered as a WM%lx\n", - id); + if (parent != wm831x->type) + dev_warn(wm831x->dev, "Device was registered as a WM%x\n", + wm831x->type); /* Bootstrap the user key */ ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY); diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c index 824bcba..c442736 100644 --- a/drivers/mfd/wm831x-i2c.c +++ b/drivers/mfd/wm831x-i2c.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include #include @@ -27,15 +29,28 @@ static int wm831x_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + struct wm831x_pdata *pdata = dev_get_platdata(&i2c->dev); struct wm831x *wm831x; + enum wm831x_parent type; int ret; + if (i2c->dev.of_node) { + const struct of_device_id *id = of_match_device(wm831x_of_match, + &i2c->dev); + unsigned long of_type = (unsigned long)id->data; + + type = (enum wm831x_parent)of_type; + } else { + type = (enum wm831x_parent)id->driver_data; + } + wm831x = devm_kzalloc(&i2c->dev, sizeof(struct wm831x), GFP_KERNEL); if (wm831x == NULL) return -ENOMEM; i2c_set_clientdata(i2c, wm831x); wm831x->dev = &i2c->dev; + wm831x->type = type; wm831x->regmap = devm_regmap_init_i2c(i2c, &wm831x_regmap_config); if (IS_ERR(wm831x->regmap)) { @@ -45,7 +60,10 @@ static int wm831x_i2c_probe(struct i2c_client *i2c, return ret; } - return wm831x_device_init(wm831x, id->driver_data, i2c->irq); + if (pdata) + memcpy(&wm831x->pdata, pdata, sizeof(*pdata)); + + return wm831x_device_init(wm831x, i2c->irq); } static int wm831x_i2c_remove(struct i2c_client *i2c) @@ -94,6 +112,7 @@ static struct i2c_driver wm831x_i2c_driver = { .driver = { .name = "wm831x", .pm = &wm831x_pm_ops, + .of_match_table = of_match_ptr(wm831x_of_match), }, .probe = wm831x_i2c_probe, .remove = wm831x_i2c_remove, diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c index dfea8b9..c01239a 100644 --- a/drivers/mfd/wm831x-irq.c +++ b/drivers/mfd/wm831x-irq.c @@ -564,7 +564,7 @@ static const struct irq_domain_ops wm831x_irq_domain_ops = { int wm831x_irq_init(struct wm831x *wm831x, int irq) { - struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); + struct wm831x_pdata *pdata = &wm831x->pdata; struct irq_domain *domain; int i, ret, irq_base; @@ -579,7 +579,7 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq) } /* Try to dynamically allocate IRQs if no base is specified */ - if (pdata && pdata->irq_base) { + if (pdata->irq_base) { irq_base = irq_alloc_descs(pdata->irq_base, 0, WM831X_NUM_IRQS, 0); if (irq_base < 0) { @@ -608,7 +608,7 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq) return -EINVAL; } - if (pdata && pdata->irq_cmos) + if (pdata->irq_cmos) i = 0; else i = WM831X_IRQ_OD; diff --git a/drivers/mfd/wm831x-spi.c b/drivers/mfd/wm831x-spi.c index 80482ae..c8e7007 100644 --- a/drivers/mfd/wm831x-spi.c +++ b/drivers/mfd/wm831x-spi.c @@ -14,6 +14,8 @@ #include #include +#include +#include #include #include #include @@ -23,12 +25,21 @@ static int wm831x_spi_probe(struct spi_device *spi) { + struct wm831x_pdata *pdata = dev_get_platdata(&spi->dev); const struct spi_device_id *id = spi_get_device_id(spi); struct wm831x *wm831x; enum wm831x_parent type; int ret; - type = (enum wm831x_parent)id->driver_data; + if (spi->dev.of_node) { + const struct of_device_id *id = of_match_device(wm831x_of_match, + &spi->dev); + unsigned long of_type = (unsigned long)id->data; + + type = (enum wm831x_parent)of_type; + } else { + type = (enum wm831x_parent)id->driver_data; + } wm831x = devm_kzalloc(&spi->dev, sizeof(struct wm831x), GFP_KERNEL); if (wm831x == NULL) @@ -38,6 +49,7 @@ static int wm831x_spi_probe(struct spi_device *spi) spi_set_drvdata(spi, wm831x); wm831x->dev = &spi->dev; + wm831x->type = type; wm831x->regmap = devm_regmap_init_spi(spi, &wm831x_regmap_config); if (IS_ERR(wm831x->regmap)) { @@ -47,7 +59,10 @@ static int wm831x_spi_probe(struct spi_device *spi) return ret; } - return wm831x_device_init(wm831x, type, spi->irq); + if (pdata) + memcpy(&wm831x->pdata, pdata, sizeof(*pdata)); + + return wm831x_device_init(wm831x, spi->irq); } static int wm831x_spi_remove(struct spi_device *spi) @@ -97,6 +112,7 @@ static struct spi_driver wm831x_spi_driver = { .driver = { .name = "wm831x", .pm = &wm831x_spi_pm, + .of_match_table = of_match_ptr(wm831x_of_match), }, .id_table = wm831x_spi_ids, .probe = wm831x_spi_probe, diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 76c2264..b49fa676 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -21,6 +21,8 @@ #include #include #include +#include +#include /* * Register values. @@ -367,6 +369,9 @@ struct wm831x { struct regmap *regmap; + struct wm831x_pdata pdata; + enum wm831x_parent type; + int irq; /* Our chip IRQ */ struct mutex irq_lock; struct irq_domain *irq_domain; @@ -412,7 +417,7 @@ int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg, int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, int count, u16 *buf); -int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq); +int wm831x_device_init(struct wm831x *wm831x, int irq); void wm831x_device_exit(struct wm831x *wm831x); int wm831x_device_suspend(struct wm831x *wm831x); void wm831x_device_shutdown(struct wm831x *wm831x); @@ -427,4 +432,6 @@ static inline int wm831x_irq(struct wm831x *wm831x, int irq) extern struct regmap_config wm831x_regmap_config; +extern const struct of_device_id wm831x_of_match[]; + #endif -- 2.1.4