shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

mmc: sdhci-of-dwcmshc: Support ACPI

Browse Source 
1. Remove the dependence on the linux clock framework
2. Add clock setting method "SCLK"
3. Remove runtime PM
4. Remove quirks flag SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN

Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Change-Id: Ieef3f45474447d8eb030f73aab23d2a5523290ac
This commit is contained in:
Yifeng Zhao
2022-06-20 15:53:26 +08:00
committed by Tao Huang
parent cf8b87bbec
commit ef5cd68c97
1 changed files with 43 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/mmc/host/sdhci-of-dwcmshc.c
View File

@@ -7,6 +7,7 @@
* Author: Jisheng Zhang <jszhang@kernel.org>
*/
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/iopoll.h>
@@ -85,6 +86,7 @@ struct dwcmshc_priv {
int txclk_tapnum;
unsigned int actual_clk;
u32 flags;
u32 acpi_en;
};
struct dwcmshc_driver_data {
@@ -208,9 +210,20 @@ static void dwcmshc_rk_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock <= 400000)
clock = 375000;
err = clk_set_rate(pltfm_host->clk, clock);
if (err)
dev_err(mmc_dev(host->mmc), "fail to set clock %d", clock);
if (priv->acpi_en) {
union acpi_object params[1];
struct acpi_object_list param_objects;
params[0].type = ACPI_TYPE_INTEGER;
params[0].integer.value = clock;
param_objects.count = 1;
param_objects.pointer = params;
acpi_evaluate_object(ACPI_HANDLE(mmc_dev(host->mmc)), "SCLK", &param_objects, NULL);
} else {
err = clk_set_rate(pltfm_host->clk, clock);
if (err)
dev_err(mmc_dev(host->mmc), "fail to set clock %d", clock);
}
sdhci_set_clock(host, clock);
@@ -339,8 +352,7 @@ static const struct sdhci_pltfm_data sdhci_dwcmshc_pdata = {
static const struct sdhci_pltfm_data sdhci_dwcmshc_rk_pdata = {
.ops = &sdhci_dwcmshc_rk_ops,
.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
};
@@ -427,7 +439,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
int err;
u32 extra;
drv_data = of_device_get_match_data(&pdev->dev);
drv_data = device_get_match_data(&pdev->dev);
if (!drv_data) {
dev_err(&pdev->dev, "Error: No device match data found\n");
return -ENODEV;
@@ -449,21 +461,24 @@ static int dwcmshc_probe(struct platform_device *pdev)
pltfm_host = sdhci_priv(host);
priv = sdhci_pltfm_priv(pltfm_host);
priv->reset = devm_reset_control_array_get_exclusive(&pdev->dev);
priv->acpi_en = has_acpi_companion(&pdev->dev);
pltfm_host->clk = devm_clk_get(&pdev->dev, "core");
if (IS_ERR(pltfm_host->clk)) {
err = PTR_ERR(pltfm_host->clk);
dev_err(&pdev->dev, "failed to get core clk: %d\n", err);
goto free_pltfm;
if (!priv->acpi_en) {
priv->reset = devm_reset_control_array_get_exclusive(&pdev->dev);
pltfm_host->clk = devm_clk_get(&pdev->dev, "core");
if (IS_ERR(pltfm_host->clk)) {
err = PTR_ERR(pltfm_host->clk);
dev_err(&pdev->dev, "failed to get core clk: %d\n", err);
goto free_pltfm;
}
err = clk_prepare_enable(pltfm_host->clk);
if (err)
goto free_pltfm;
priv->bus_clk = devm_clk_get(&pdev->dev, "bus");
if (!IS_ERR(priv->bus_clk))
clk_prepare_enable(priv->bus_clk);
}
err = clk_prepare_enable(pltfm_host->clk);
if (err)
goto free_pltfm;
priv->bus_clk = devm_clk_get(&pdev->dev, "bus");
if (!IS_ERR(priv->bus_clk))
clk_prepare_enable(priv->bus_clk);
err = mmc_of_parse(host->mmc);
if (err)
@@ -472,8 +487,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
sdhci_get_of_property(pdev);
host->mmc_host_ops.request = dwcmshc_request;
host->mmc_host_ops.hs400_enhanced_strobe =
dwcmshc_hs400_enhanced_strobe;
host->mmc_host_ops.hs400_enhanced_strobe = dwcmshc_hs400_enhanced_strobe;
err = sdhci_add_host(host);
if (err)
@@ -486,12 +500,14 @@ static int dwcmshc_probe(struct platform_device *pdev)
goto err_clk;
}
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_put_autosuspend(&pdev->dev);
if (!priv->acpi_en) {
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_put_autosuspend(&pdev->dev);
}
return 0;