diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/fman/fman.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/fman/fman.c | 80 |
1 files changed, 26 insertions, 54 deletions
diff --git a/drivers/net/ethernet/freescale/fman/fman.c b/drivers/net/ethernet/freescale/fman/fman.c index f151d6e111dd..9d85fb136e34 100644 --- a/drivers/net/ethernet/freescale/fman/fman.c +++ b/drivers/net/ethernet/freescale/fman/fman.c @@ -1,34 +1,7 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later /* - * Copyright 2008-2015 Freescale Semiconductor Inc. + * Copyright 2008 - 2015 Freescale Semiconductor Inc. * Copyright 2020 NXP - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of Freescale Semiconductor nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") as published by the Free Software - * Foundation, either version 2 of that License or (at your option) any - * later version. - * - * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -1398,8 +1371,7 @@ static void enable_time_stamp(struct fman *fman) { struct fman_fpm_regs __iomem *fpm_rg = fman->fpm_regs; u16 fm_clk_freq = fman->state->fm_clk_freq; - u32 tmp, intgr, ts_freq; - u64 frac; + u32 tmp, intgr, ts_freq, frac; ts_freq = (u32)(1 << fman->state->count1_micro_bit); /* configure timestamp so that bit 8 will count 1 microsecond @@ -2064,11 +2036,11 @@ static int fman_set_exception(struct fman *fman, /** * fman_register_intr * @fman: A Pointer to FMan device - * @mod: Calling module + * @module: Calling module * @mod_id: Module id (if more than 1 exists, '0' if not) * @intr_type: Interrupt type (error/normal) selection. - * @f_isr: The interrupt service routine. - * @h_src_arg: Argument to be passed to f_isr. + * @isr_cb: The interrupt service routine. + * @src_arg: Argument to be passed to isr_cb. * * Used to register an event handler to be processed by FMan * @@ -2092,7 +2064,7 @@ EXPORT_SYMBOL(fman_register_intr); /** * fman_unregister_intr * @fman: A Pointer to FMan device - * @mod: Calling module + * @module: Calling module * @mod_id: Module id (if more than 1 exists, '0' if not) * @intr_type: Interrupt type (error/normal) selection. * @@ -2343,8 +2315,8 @@ EXPORT_SYMBOL(fman_get_bmi_max_fifo_size); /** * fman_get_revision - * @fman - Pointer to the FMan module - * @rev_info - A structure of revision information parameters. + * @fman: - Pointer to the FMan module + * @rev_info: - A structure of revision information parameters. * * Returns the FM revision * @@ -2509,7 +2481,7 @@ EXPORT_SYMBOL(fman_get_rx_extra_headroom); /** * fman_bind - * @dev: FMan OF device pointer + * @fm_dev: FMan OF device pointer * * Bind to a specific FMan device. * @@ -2728,7 +2700,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) fman = kzalloc(sizeof(*fman), GFP_KERNEL); if (!fman) - return NULL; + return ERR_PTR(-ENOMEM); fm_node = of_node_get(of_dev->dev.of_node); @@ -2741,26 +2713,21 @@ static struct fman *read_dts_node(struct platform_device *of_dev) fman->dts_params.id = (u8)val; /* Get the FM interrupt */ - res = platform_get_resource(of_dev, IORESOURCE_IRQ, 0); - if (!res) { - dev_err(&of_dev->dev, "%s: Can't get FMan IRQ resource\n", - __func__); + err = platform_get_irq(of_dev, 0); + if (err < 0) goto fman_node_put; - } - irq = res->start; + irq = err; /* Get the FM error interrupt */ - res = platform_get_resource(of_dev, IORESOURCE_IRQ, 1); - if (!res) { - dev_err(&of_dev->dev, "%s: Can't get FMan Error IRQ resource\n", - __func__); + err = platform_get_irq(of_dev, 1); + if (err < 0) goto fman_node_put; - } - fman->dts_params.err_irq = res->start; + fman->dts_params.err_irq = err; /* Get the FM address */ res = platform_get_resource(of_dev, IORESOURCE_MEM, 0); if (!res) { + err = -EINVAL; dev_err(&of_dev->dev, "%s: Can't get FMan memory resource\n", __func__); goto fman_node_put; @@ -2771,6 +2738,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) clk = of_clk_get(fm_node, 0); if (IS_ERR(clk)) { + err = PTR_ERR(clk); dev_err(&of_dev->dev, "%s: Failed to get FM%d clock structure\n", __func__, fman->dts_params.id); goto fman_node_put; @@ -2778,6 +2746,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) clk_rate = clk_get_rate(clk); if (!clk_rate) { + err = -EINVAL; dev_err(&of_dev->dev, "%s: Failed to determine FM%d clock rate\n", __func__, fman->dts_params.id); goto fman_node_put; @@ -2798,6 +2767,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) /* Get the MURAM base address and size */ muram_node = of_find_matching_node(fm_node, fman_muram_match); if (!muram_node) { + err = -EINVAL; dev_err(&of_dev->dev, "%s: could not find MURAM node\n", __func__); goto fman_free; @@ -2837,6 +2807,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) devm_request_mem_region(&of_dev->dev, phys_base_addr, mem_size, "fman"); if (!fman->dts_params.res) { + err = -EBUSY; dev_err(&of_dev->dev, "%s: request_mem_region() failed\n", __func__); goto fman_free; @@ -2845,6 +2816,7 @@ static struct fman *read_dts_node(struct platform_device *of_dev) fman->dts_params.base_addr = devm_ioremap(&of_dev->dev, phys_base_addr, mem_size); if (!fman->dts_params.base_addr) { + err = -ENOMEM; dev_err(&of_dev->dev, "%s: devm_ioremap() failed\n", __func__); goto fman_free; } @@ -2869,7 +2841,7 @@ fman_node_put: of_node_put(fm_node); fman_free: kfree(fman); - return NULL; + return ERR_PTR(err); } static int fman_probe(struct platform_device *of_dev) @@ -2881,8 +2853,8 @@ static int fman_probe(struct platform_device *of_dev) dev = &of_dev->dev; fman = read_dts_node(of_dev); - if (!fman) - return -EIO; + if (IS_ERR(fman)) + return PTR_ERR(fman); err = fman_config(fman); if (err) { |