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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
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>
194 lines
4.2 KiB
C
194 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*/
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#include <common.h>
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#include <dm.h>
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#include <clk.h>
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#include <malloc.h>
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#include <asm/clk.h>
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#include <dm/device_compat.h>
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#include <linux/err.h>
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struct sandbox_clk_test {
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struct clk clks[SANDBOX_CLK_TEST_NON_DEVM_COUNT];
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struct clk *clkps[SANDBOX_CLK_TEST_ID_COUNT];
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struct clk_bulk bulk;
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};
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static const char * const sandbox_clk_test_names[] = {
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[SANDBOX_CLK_TEST_ID_FIXED] = "fixed",
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[SANDBOX_CLK_TEST_ID_SPI] = "spi",
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[SANDBOX_CLK_TEST_ID_I2C] = "i2c",
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};
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int sandbox_clk_test_get(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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int i, ret;
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for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
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ret = clk_get_by_name(dev, sandbox_clk_test_names[i],
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&sbct->clks[i]);
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if (ret)
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return ret;
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}
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return 0;
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}
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int sandbox_clk_test_devm_get(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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struct clk *clk;
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clk = devm_clk_get(dev, "no-an-existing-clock");
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if (!IS_ERR(clk)) {
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dev_err(dev, "devm_clk_get() should have failed\n");
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return -EINVAL;
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}
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clk = devm_clk_get(dev, "uart2");
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if (IS_ERR(clk))
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return PTR_ERR(clk);
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sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk;
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clk = devm_clk_get_optional(dev, "uart1");
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if (IS_ERR(clk))
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return PTR_ERR(clk);
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sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk;
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sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL;
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clk = devm_clk_get_optional(dev, "not_an_existing_clock");
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if (IS_ERR(clk))
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return PTR_ERR(clk);
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if (clk)
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return -EINVAL;
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return 0;
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}
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int sandbox_clk_test_get_bulk(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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return clk_get_bulk(dev, &sbct->bulk);
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}
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ulong sandbox_clk_test_get_rate(struct udevice *dev, int id)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
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return -EINVAL;
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return clk_get_rate(sbct->clkps[id]);
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}
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ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
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return -EINVAL;
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return clk_set_rate(sbct->clkps[id], rate);
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}
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int sandbox_clk_test_enable(struct udevice *dev, int id)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
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return -EINVAL;
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return clk_enable(sbct->clkps[id]);
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}
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int sandbox_clk_test_enable_bulk(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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return clk_enable_bulk(&sbct->bulk);
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}
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int sandbox_clk_test_disable(struct udevice *dev, int id)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT)
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return -EINVAL;
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return clk_disable(sbct->clkps[id]);
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}
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int sandbox_clk_test_disable_bulk(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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return clk_disable_bulk(&sbct->bulk);
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}
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int sandbox_clk_test_free(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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int i, ret;
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devm_clk_put(dev, sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1]);
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for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) {
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ret = clk_free(&sbct->clks[i]);
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if (ret)
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return ret;
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}
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return 0;
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}
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int sandbox_clk_test_release_bulk(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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return clk_release_bulk(&sbct->bulk);
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}
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int sandbox_clk_test_valid(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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int i;
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for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) {
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if (!clk_valid(sbct->clkps[i]))
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if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL)
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return -EINVAL;
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}
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return 0;
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}
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static int sandbox_clk_test_probe(struct udevice *dev)
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{
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struct sandbox_clk_test *sbct = dev_get_priv(dev);
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int i;
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for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++)
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sbct->clkps[i] = &sbct->clks[i];
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for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++)
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sbct->clkps[i] = NULL;
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return 0;
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}
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static const struct udevice_id sandbox_clk_test_ids[] = {
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{ .compatible = "sandbox,clk-test" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_clk_test) = {
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.name = "sandbox_clk_test",
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.id = UCLASS_MISC,
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.of_match = sandbox_clk_test_ids,
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.probe = sandbox_clk_test_probe,
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.priv_auto = sizeof(struct sandbox_clk_test),
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};
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