da8xx-mstpri.c (b9bccf35acc94e1972029abb0b41cd5a0f4dc54c) da8xx-mstpri.c (48c28337380ac499df5e370bc1ec1d6217ac35bc)
1/*
2 * TI da8xx master peripheral priority driver
3 *
4 * Copyright (C) 2016 BayLibre SAS
5 *
6 * Author:
7 * Bartosz Golaszewski <bgolaszewski@baylibre.com.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/of.h>
16#include <linux/platform_device.h>
17#include <linux/io.h>
18#include <linux/regmap.h>
1/*
2 * TI da8xx master peripheral priority driver
3 *
4 * Copyright (C) 2016 BayLibre SAS
5 *
6 * Author:
7 * Bartosz Golaszewski <bgolaszewski@baylibre.com.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/of.h>
16#include <linux/platform_device.h>
17#include <linux/io.h>
18#include <linux/regmap.h>
19#include <linux/of_fdt.h>
20
21/*
22 * REVISIT: Linux doesn't have a good framework for the kind of performance
23 * knobs this driver controls. We can't use device tree properties as it deals
24 * with hardware configuration rather than description. We also don't want to
25 * commit to maintaining some random sysfs attributes.
26 *
27 * For now we just hardcode the register values for the boards that need

--- 193 unchanged lines hidden (view full) ---

221 mstpri = devm_ioremap_resource(dev, res);
222 if (IS_ERR(mstpri)) {
223 dev_err(dev, "unable to map MSTPRI registers\n");
224 return PTR_ERR(mstpri);
225 }
226
227 prio_list = da8xx_mstpri_get_board_prio();
228 if (!prio_list) {
19
20/*
21 * REVISIT: Linux doesn't have a good framework for the kind of performance
22 * knobs this driver controls. We can't use device tree properties as it deals
23 * with hardware configuration rather than description. We also don't want to
24 * commit to maintaining some random sysfs attributes.
25 *
26 * For now we just hardcode the register values for the boards that need

--- 193 unchanged lines hidden (view full) ---

220 mstpri = devm_ioremap_resource(dev, res);
221 if (IS_ERR(mstpri)) {
222 dev_err(dev, "unable to map MSTPRI registers\n");
223 return PTR_ERR(mstpri);
224 }
225
226 prio_list = da8xx_mstpri_get_board_prio();
227 if (!prio_list) {
229 dev_err(dev, "no master priotities defined for board '%s'\n",
230 of_flat_dt_get_machine_name());
228 dev_err(dev, "no master priorities defined for this board\n");
231 return -EINVAL;
232 }
233
234 for (i = 0; i < prio_list->numprio; i++) {
235 prio = &prio_list->priorities[i];
236 prio_descr = &da8xx_mstpri_priority_list[prio->which];
237
238 if (prio_descr->reg + sizeof(u32) > resource_size(res)) {

--- 31 unchanged lines hidden --- 		229 return -EINVAL;
230 }
231
232 for (i = 0; i < prio_list->numprio; i++) {
233 prio = &prio_list->priorities[i];
234 prio_descr = &da8xx_mstpri_priority_list[prio->which];
235
236 if (prio_descr->reg + sizeof(u32) > resource_size(res)) {

--- 31 unchanged lines hidden ---