From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f52.google.com ([74.125.82.52]:36711 "EHLO mail-wg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934528AbbCPWRD (ORCPT ); Mon, 16 Mar 2015 18:17:03 -0400 Received: by wgra20 with SMTP id a20so51274178wgr.3 for ; Mon, 16 Mar 2015 15:17:01 -0700 (PDT) From: Brad Campbell Subject: [PATCHv2 1/2] cc2520: Do not store platform_data in spi_device Date: Mon, 16 Mar 2015 18:16:42 -0400 Message-Id: <1426544203-60585-2-git-send-email-bradjc5@gmail.com> In-Reply-To: <1426544203-60585-1-git-send-email-bradjc5@gmail.com> References: <1426544203-60585-1-git-send-email-bradjc5@gmail.com> Sender: linux-wpan-owner@vger.kernel.org List-ID: To: linux-wpan@vger.kernel.org Cc: alex.aring@gmail.com, Brad Campbell Storing the `platform_data` struct inside of the SPI struct when using the device tree allows for a later function to edit the content of that struct. This patch refactors the `cc2520_get_platformat_data` function to accept a pointer to a `cc2520_platform_data` struct and populates the fields inside of it. This changes mirrors a similar change in the at86rf230.c driver. Signed-off-by: Brad Campbell --- drivers/net/ieee802154/cc2520.c | 93 +++++++++++++++++++---------------------- 1 file changed, 44 insertions(+), 49 deletions(-) diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c index 181b349..275e6fb 100644 --- a/drivers/net/ieee802154/cc2520.c +++ b/drivers/net/ieee802154/cc2520.c @@ -714,6 +714,31 @@ static irqreturn_t cc2520_sfd_isr(int irq, void *data) return IRQ_HANDLED; } +static int cc2520_get_platform_data(struct spi_device *spi, + struct cc2520_platform_data *pdata) +{ + struct device_node *np = spi->dev.of_node; + struct cc2520_private *priv = spi_get_drvdata(spi); + + if (!np) { + struct cc2520_platform_data *spi_pdata = spi->dev.platform_data; + *pdata = *spi_pdata; + return 0; + } + + pdata->fifo = of_get_named_gpio(np, "fifo-gpio", 0); + priv->fifo_pin = pdata->fifo; + + pdata->fifop = of_get_named_gpio(np, "fifop-gpio", 0); + + pdata->sfd = of_get_named_gpio(np, "sfd-gpio", 0); + pdata->cca = of_get_named_gpio(np, "cca-gpio", 0); + pdata->vreg = of_get_named_gpio(np, "vreg-gpio", 0); + pdata->reset = of_get_named_gpio(np, "reset-gpio", 0); + + return 0; +} + static int cc2520_hw_init(struct cc2520_private *priv) { u8 status = 0, state = 0xff; @@ -808,40 +833,10 @@ err_ret: return ret; } -static struct cc2520_platform_data * -cc2520_get_platform_data(struct spi_device *spi) -{ - struct cc2520_platform_data *pdata; - struct device_node *np = spi->dev.of_node; - struct cc2520_private *priv = spi_get_drvdata(spi); - - if (!np) - return spi->dev.platform_data; - - pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - goto done; - - pdata->fifo = of_get_named_gpio(np, "fifo-gpio", 0); - priv->fifo_pin = pdata->fifo; - - pdata->fifop = of_get_named_gpio(np, "fifop-gpio", 0); - - pdata->sfd = of_get_named_gpio(np, "sfd-gpio", 0); - pdata->cca = of_get_named_gpio(np, "cca-gpio", 0); - pdata->vreg = of_get_named_gpio(np, "vreg-gpio", 0); - pdata->reset = of_get_named_gpio(np, "reset-gpio", 0); - - spi->dev.platform_data = pdata; - -done: - return pdata; -} - static int cc2520_probe(struct spi_device *spi) { struct cc2520_private *priv; - struct cc2520_platform_data *pdata; + struct cc2520_platform_data pdata; int ret; priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL); @@ -850,8 +845,8 @@ static int cc2520_probe(struct spi_device *spi) spi_set_drvdata(spi, priv); - pdata = cc2520_get_platform_data(spi); - if (!pdata) { + ret = cc2520_get_platform_data(spi, &pdata); + if (ret < 0) { dev_err(&spi->dev, "no platform data\n"); return -EINVAL; } @@ -869,76 +864,76 @@ static int cc2520_probe(struct spi_device *spi) init_completion(&priv->tx_complete); /* Request all the gpio's */ - if (!gpio_is_valid(pdata->fifo)) { + if (!gpio_is_valid(pdata.fifo)) { dev_err(&spi->dev, "fifo gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->fifo, + ret = devm_gpio_request_one(&spi->dev, pdata.fifo, GPIOF_IN, "fifo"); if (ret) goto err_hw_init; - if (!gpio_is_valid(pdata->cca)) { + if (!gpio_is_valid(pdata.cca)) { dev_err(&spi->dev, "cca gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->cca, + ret = devm_gpio_request_one(&spi->dev, pdata.cca, GPIOF_IN, "cca"); if (ret) goto err_hw_init; - if (!gpio_is_valid(pdata->fifop)) { + if (!gpio_is_valid(pdata.fifop)) { dev_err(&spi->dev, "fifop gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->fifop, + ret = devm_gpio_request_one(&spi->dev, pdata.fifop, GPIOF_IN, "fifop"); if (ret) goto err_hw_init; - if (!gpio_is_valid(pdata->sfd)) { + if (!gpio_is_valid(pdata.sfd)) { dev_err(&spi->dev, "sfd gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->sfd, + ret = devm_gpio_request_one(&spi->dev, pdata.sfd, GPIOF_IN, "sfd"); if (ret) goto err_hw_init; - if (!gpio_is_valid(pdata->reset)) { + if (!gpio_is_valid(pdata.reset)) { dev_err(&spi->dev, "reset gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->reset, + ret = devm_gpio_request_one(&spi->dev, pdata.reset, GPIOF_OUT_INIT_LOW, "reset"); if (ret) goto err_hw_init; - if (!gpio_is_valid(pdata->vreg)) { + if (!gpio_is_valid(pdata.vreg)) { dev_err(&spi->dev, "vreg gpio is not valid\n"); ret = -EINVAL; goto err_hw_init; } - ret = devm_gpio_request_one(&spi->dev, pdata->vreg, + ret = devm_gpio_request_one(&spi->dev, pdata.vreg, GPIOF_OUT_INIT_LOW, "vreg"); if (ret) goto err_hw_init; - gpio_set_value(pdata->vreg, HIGH); + gpio_set_value(pdata.vreg, HIGH); usleep_range(100, 150); - gpio_set_value(pdata->reset, HIGH); + gpio_set_value(pdata.reset, HIGH); usleep_range(200, 250); ret = cc2520_hw_init(priv); @@ -947,7 +942,7 @@ static int cc2520_probe(struct spi_device *spi) /* Set up fifop interrupt */ ret = devm_request_irq(&spi->dev, - gpio_to_irq(pdata->fifop), + gpio_to_irq(pdata.fifop), cc2520_fifop_isr, IRQF_TRIGGER_RISING, dev_name(&spi->dev), @@ -959,7 +954,7 @@ static int cc2520_probe(struct spi_device *spi) /* Set up sfd interrupt */ ret = devm_request_irq(&spi->dev, - gpio_to_irq(pdata->sfd), + gpio_to_irq(pdata.sfd), cc2520_sfd_isr, IRQF_TRIGGER_FALLING, dev_name(&spi->dev), -- 2.3.2