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spi: rockchip-sfc: Support ACPI

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Change-Id: I84178e0945737945398d16ee59e4808a42cf1a99
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2022-07-28 14:05:35 +08:00
parent 25da86fe62
commit 572d1d7548
1 changed files with 14 additions and 3 deletions
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17
drivers/spi/spi-rockchip-sfc.c
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@@ -8,6 +8,7 @@
* Jon Lin <Jon.lin@rock-chips.com>
*/
#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/completion.h>
@@ -626,7 +627,7 @@ static int rockchip_sfc_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op
return ret;
}
if (unlikely(mem->spi->max_speed_hz != sfc->frequency)) {
if (unlikely(mem->spi->max_speed_hz != sfc->frequency) && !has_acpi_companion(sfc->dev)) {
ret = clk_set_rate(sfc->clk, mem->spi->max_speed_hz);
if (ret)
goto out;
@@ -729,18 +730,28 @@ static int rockchip_sfc_probe(struct platform_device *pdev)
if (IS_ERR(sfc->regbase))
return PTR_ERR(sfc->regbase);
sfc->clk = devm_clk_get(&pdev->dev, "clk_sfc");
if (!has_acpi_companion(&pdev->dev))
sfc->clk = devm_clk_get(&pdev->dev, "clk_sfc");
if (IS_ERR(sfc->clk)) {
dev_err(&pdev->dev, "Failed to get sfc interface clk\n");
return PTR_ERR(sfc->clk);
}
sfc->hclk = devm_clk_get(&pdev->dev, "hclk_sfc");
if (!has_acpi_companion(&pdev->dev))
sfc->hclk = devm_clk_get(&pdev->dev, "hclk_sfc");
if (IS_ERR(sfc->hclk)) {
dev_err(&pdev->dev, "Failed to get sfc ahb clk\n");
return PTR_ERR(sfc->hclk);
}
if (has_acpi_companion(&pdev->dev)) {
ret = device_property_read_u32(&pdev->dev, "clock-frequency", &sfc->frequency);
if (ret) {
dev_err(&pdev->dev, "Failed to find clock-frequency in ACPI\n");
return ret;
}
}
sfc->use_dma = !of_property_read_bool(sfc->dev->of_node,
"rockchip,sfc-no-dma");