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https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Clock drivers for Qualcomm IPQ40xx
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*
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* Copyright (c) 2020 Sartura Ltd.
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*
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* Author: Robert Marko <robert.marko@sartura.hr>
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*
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*/
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#include <clk-uclass.h>
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <dt-bindings/clock/qcom,ipq4019-gcc.h>
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struct msm_clk_priv {
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phys_addr_t base;
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};
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ulong msm_set_rate(struct clk *clk, ulong rate)
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{
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switch (clk->id) {
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case GCC_BLSP1_UART1_APPS_CLK: /*UART1*/
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/* This clock is already initialized by SBL1 */
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return 0;
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default:
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return -EINVAL;
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}
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}
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static int msm_clk_probe(struct udevice *dev)
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{
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struct msm_clk_priv *priv = dev_get_priv(dev);
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priv->base = dev_read_addr(dev);
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if (priv->base == FDT_ADDR_T_NONE)
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return -EINVAL;
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return 0;
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}
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static ulong msm_clk_set_rate(struct clk *clk, ulong rate)
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{
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return msm_set_rate(clk, rate);
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}
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static int msm_enable(struct clk *clk)
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{
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switch (clk->id) {
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case GCC_BLSP1_QUP1_SPI_APPS_CLK: /*SPI1*/
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/* This clock is already initialized by SBL1 */
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return 0;
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case GCC_PRNG_AHB_CLK: /*PRNG*/
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/* This clock is already initialized by SBL1 */
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return 0;
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case GCC_USB3_MASTER_CLK:
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case GCC_USB3_SLEEP_CLK:
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case GCC_USB3_MOCK_UTMI_CLK:
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case GCC_USB2_MASTER_CLK:
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case GCC_USB2_SLEEP_CLK:
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case GCC_USB2_MOCK_UTMI_CLK:
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/* These clocks is already initialized by SBL1 */
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return 0;
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default:
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return -EINVAL;
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}
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}
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static struct clk_ops msm_clk_ops = {
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.set_rate = msm_clk_set_rate,
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.enable = msm_enable,
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};
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static const struct udevice_id msm_clk_ids[] = {
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{ .compatible = "qcom,gcc-ipq4019" },
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{ }
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};
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U_BOOT_DRIVER(clk_msm) = {
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.name = "clk_msm",
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.id = UCLASS_CLK,
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.of_match = msm_clk_ids,
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.ops = &msm_clk_ops,
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.priv_auto = sizeof(struct msm_clk_priv),
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.probe = msm_clk_probe,
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};
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