diff options
Diffstat (limited to 'drivers/clk/imx/clk-pfd.c')
| -rw-r--r-- | drivers/clk/imx/clk-pfd.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/drivers/clk/imx/clk-pfd.c b/drivers/clk/imx/clk-pfd.c index 04a3e78ea1bc..31220fa7882b 100644 --- a/drivers/clk/imx/clk-pfd.c +++ b/drivers/clk/imx/clk-pfd.c @@ -1,16 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2012 Freescale Semiconductor, Inc. * Copyright 2012 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html */ #include <linux/clk-provider.h> +#include <linux/export.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/err.h> @@ -18,7 +13,7 @@ /** * struct clk_pfd - IMX PFD clock - * @clk_hw: clock source + * @hw: clock source * @reg: PFD register address * @idx: the index of PFD encoded in the register * @@ -67,24 +62,26 @@ static unsigned long clk_pfd_recalc_rate(struct clk_hw *hw, return tmp; } -static long clk_pfd_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int clk_pfd_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { - u64 tmp = *prate; + u64 tmp = req->best_parent_rate; u8 frac; - tmp = tmp * 18 + rate / 2; - do_div(tmp, rate); + tmp = tmp * 18 + req->rate / 2; + do_div(tmp, req->rate); frac = tmp; if (frac < 12) frac = 12; else if (frac > 35) frac = 35; - tmp = *prate; + tmp = req->best_parent_rate; tmp *= 18; do_div(tmp, frac); - return tmp; + req->rate = tmp; + + return 0; } static int clk_pfd_set_rate(struct clk_hw *hw, unsigned long rate, @@ -122,17 +119,18 @@ static const struct clk_ops clk_pfd_ops = { .enable = clk_pfd_enable, .disable = clk_pfd_disable, .recalc_rate = clk_pfd_recalc_rate, - .round_rate = clk_pfd_round_rate, + .determine_rate = clk_pfd_determine_rate, .set_rate = clk_pfd_set_rate, .is_enabled = clk_pfd_is_enabled, }; -struct clk *imx_clk_pfd(const char *name, const char *parent_name, +struct clk_hw *imx_clk_hw_pfd(const char *name, const char *parent_name, void __iomem *reg, u8 idx) { struct clk_pfd *pfd; - struct clk *clk; + struct clk_hw *hw; struct clk_init_data init; + int ret; pfd = kzalloc(sizeof(*pfd), GFP_KERNEL); if (!pfd) @@ -148,10 +146,14 @@ struct clk *imx_clk_pfd(const char *name, const char *parent_name, init.num_parents = 1; pfd->hw.init = &init; + hw = &pfd->hw; - clk = clk_register(NULL, &pfd->hw); - if (IS_ERR(clk)) + ret = clk_hw_register(NULL, hw); + if (ret) { kfree(pfd); + return ERR_PTR(ret); + } - return clk; + return hw; } +EXPORT_SYMBOL_GPL(imx_clk_hw_pfd); |