Now that there is a new dedicated ICE driver, drop the sdhci-msm ICE
implementation and use the new ICE api provided by the Qualcomm soc
driver ice. The platforms that already have ICE support will use the
API as library since there will not be a devicetree node, but instead
they have reg range. In this case, the of_qcom_ice_get will return an
ICE instance created for the consumer's device. But if there are
platforms that do not have ice reg in the consumer devicetree node
and instead provide a dedicated ICE devicetree node, theof_qcom_ice_get
will look up the device based on qcom,ice property and will get the ICE
instance registered by the probe function of the ice driver.
Signed-off-by: Abel Vesa <[email protected]>
---
The v3 (RFC) is here:
https://lore.kernel.org/all/[email protected]/
Changes since v3:
* added back the checks for and the setting of MMC_CAP2_CRYPTO
* added enable/resume/suspend implementation for !CONFIG_MMC_CRYPTO
* dropped cfg->crypto_cap_idx argument from qcom_ice_program_key
Changes since v2:
* added the suspend API call for ICE
* kept old wrappers over ICE API in
Changes since v1:
* Added a check for supported algorithm and key size
and passed the ICE defined values for algorithm and key size
* Added call to evict function
drivers/mmc/host/Kconfig | 2 +-
drivers/mmc/host/sdhci-msm.c | 220 +++++++----------------------------
2 files changed, 46 insertions(+), 176 deletions(-)
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 4745fe217ade..09f837df5435 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -549,7 +549,7 @@ config MMC_SDHCI_MSM
depends on MMC_SDHCI_PLTFM
select MMC_SDHCI_IO_ACCESSORS
select MMC_CQHCI
- select QCOM_SCM if MMC_CRYPTO
+ select QCOM_INLINE_CRYPTO_ENGINE if MMC_CRYPTO
help
This selects the Secure Digital Host Controller Interface (SDHCI)
support present in Qualcomm SOCs. The controller supports
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 8ac81d57a3df..1a6e63b7af12 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -19,6 +19,8 @@
#include <linux/pinctrl/consumer.h>
#include <linux/reset.h>
+#include <soc/qcom/ice.h>
+
#include "sdhci-cqhci.h"
#include "sdhci-pltfm.h"
#include "cqhci.h"
@@ -258,12 +260,14 @@ struct sdhci_msm_variant_info {
struct sdhci_msm_host {
struct platform_device *pdev;
void __iomem *core_mem; /* MSM SDCC mapped address */
- void __iomem *ice_mem; /* MSM ICE mapped address (if available) */
int pwr_irq; /* power irq */
struct clk *bus_clk; /* SDHC bus voter clock */
struct clk *xo_clk; /* TCXO clk needed for FLL feature of cm_dll*/
- /* core, iface, cal, sleep, and ice clocks */
- struct clk_bulk_data bulk_clks[5];
+ /* core, iface, cal and sleep clocks */
+ struct clk_bulk_data bulk_clks[4];
+#ifdef CONFIG_MMC_CRYPTO
+ struct qcom_ice *ice;
+#endif
unsigned long clk_rate;
struct mmc_host *mmc;
bool use_14lpp_dll_reset;
@@ -1804,164 +1808,49 @@ static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
#ifdef CONFIG_MMC_CRYPTO
-#define AES_256_XTS_KEY_SIZE 64
-
-/* QCOM ICE registers */
-
-#define QCOM_ICE_REG_VERSION 0x0008
-
-#define QCOM_ICE_REG_FUSE_SETTING 0x0010
-#define QCOM_ICE_FUSE_SETTING_MASK 0x1
-#define QCOM_ICE_FORCE_HW_KEY0_SETTING_MASK 0x2
-#define QCOM_ICE_FORCE_HW_KEY1_SETTING_MASK 0x4
-
-#define QCOM_ICE_REG_BIST_STATUS 0x0070
-#define QCOM_ICE_BIST_STATUS_MASK 0xF0000000
-
-#define QCOM_ICE_REG_ADVANCED_CONTROL 0x1000
-
-#define sdhci_msm_ice_writel(host, val, reg) \
- writel((val), (host)->ice_mem + (reg))
-#define sdhci_msm_ice_readl(host, reg) \
- readl((host)->ice_mem + (reg))
-
-static bool sdhci_msm_ice_supported(struct sdhci_msm_host *msm_host)
-{
- struct device *dev = mmc_dev(msm_host->mmc);
- u32 regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_VERSION);
- int major = regval >> 24;
- int minor = (regval >> 16) & 0xFF;
- int step = regval & 0xFFFF;
-
- /* For now this driver only supports ICE version 3. */
- if (major != 3) {
- dev_warn(dev, "Unsupported ICE version: v%d.%d.%d\n",
- major, minor, step);
- return false;
- }
-
- dev_info(dev, "Found QC Inline Crypto Engine (ICE) v%d.%d.%d\n",
- major, minor, step);
-
- /* If fuses are blown, ICE might not work in the standard way. */
- regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_FUSE_SETTING);
- if (regval & (QCOM_ICE_FUSE_SETTING_MASK |
- QCOM_ICE_FORCE_HW_KEY0_SETTING_MASK |
- QCOM_ICE_FORCE_HW_KEY1_SETTING_MASK)) {
- dev_warn(dev, "Fuses are blown; ICE is unusable!\n");
- return false;
- }
- return true;
-}
-
-static inline struct clk *sdhci_msm_ice_get_clk(struct device *dev)
-{
- return devm_clk_get(dev, "ice");
-}
-
static int sdhci_msm_ice_init(struct sdhci_msm_host *msm_host,
struct cqhci_host *cq_host)
{
struct mmc_host *mmc = msm_host->mmc;
struct device *dev = mmc_dev(mmc);
- struct resource *res;
if (!(cqhci_readl(cq_host, CQHCI_CAP) & CQHCI_CAP_CS))
return 0;
- res = platform_get_resource_byname(msm_host->pdev, IORESOURCE_MEM,
- "ice");
- if (!res) {
- dev_warn(dev, "ICE registers not found\n");
- goto disable;
- }
-
- if (!qcom_scm_ice_available()) {
- dev_warn(dev, "ICE SCM interface not found\n");
- goto disable;
+ msm_host->ice = of_qcom_ice_get(dev);
+ if (msm_host->ice == ERR_PTR(-EOPNOTSUPP)) {
+ dev_warn(dev, "Disabling inline encryption support\n");
+ msm_host->ice = NULL;
}
- msm_host->ice_mem = devm_ioremap_resource(dev, res);
- if (IS_ERR(msm_host->ice_mem))
- return PTR_ERR(msm_host->ice_mem);
-
- if (!sdhci_msm_ice_supported(msm_host))
- goto disable;
+ if (IS_ERR(msm_host->ice))
+ return PTR_ERR(msm_host->ice);
mmc->caps2 |= MMC_CAP2_CRYPTO;
- return 0;
-disable:
- dev_warn(dev, "Disabling inline encryption support\n");
return 0;
}
-static void sdhci_msm_ice_low_power_mode_enable(struct sdhci_msm_host *msm_host)
-{
- u32 regval;
-
- regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_ADVANCED_CONTROL);
- /*
- * Enable low power mode sequence
- * [0]-0, [1]-0, [2]-0, [3]-E, [4]-0, [5]-0, [6]-0, [7]-0
- */
- regval |= 0x7000;
- sdhci_msm_ice_writel(msm_host, regval, QCOM_ICE_REG_ADVANCED_CONTROL);
-}
-
-static void sdhci_msm_ice_optimization_enable(struct sdhci_msm_host *msm_host)
+static void sdhci_msm_ice_enable(struct sdhci_msm_host *msm_host)
{
- u32 regval;
-
- /* ICE Optimizations Enable Sequence */
- regval = sdhci_msm_ice_readl(msm_host, QCOM_ICE_REG_ADVANCED_CONTROL);
- regval |= 0xD807100;
- /* ICE HPG requires delay before writing */
- udelay(5);
- sdhci_msm_ice_writel(msm_host, regval, QCOM_ICE_REG_ADVANCED_CONTROL);
- udelay(5);
+ if (msm_host->mmc->caps2 & MMC_CAP2_CRYPTO)
+ qcom_ice_enable(msm_host->ice);
}
-/*
- * Wait until the ICE BIST (built-in self-test) has completed.
- *
- * This may be necessary before ICE can be used.
- *
- * Note that we don't really care whether the BIST passed or failed; we really
- * just want to make sure that it isn't still running. This is because (a) the
- * BIST is a FIPS compliance thing that never fails in practice, (b) ICE is
- * documented to reject crypto requests if the BIST fails, so we needn't do it
- * in software too, and (c) properly testing storage encryption requires testing
- * the full storage stack anyway, and not relying on hardware-level self-tests.
- */
-static int sdhci_msm_ice_wait_bist_status(struct sdhci_msm_host *msm_host)
+static __maybe_unused int sdhci_msm_ice_resume(struct sdhci_msm_host *msm_host)
{
- u32 regval;
- int err;
+ if (msm_host->mmc->caps2 & MMC_CAP2_CRYPTO)
+ return qcom_ice_resume(msm_host->ice);
- err = readl_poll_timeout(msm_host->ice_mem + QCOM_ICE_REG_BIST_STATUS,
- regval, !(regval & QCOM_ICE_BIST_STATUS_MASK),
- 50, 5000);
- if (err)
- dev_err(mmc_dev(msm_host->mmc),
- "Timed out waiting for ICE self-test to complete\n");
- return err;
+ return 0;
}
-static void sdhci_msm_ice_enable(struct sdhci_msm_host *msm_host)
+static __maybe_unused int sdhci_msm_ice_suspend(struct sdhci_msm_host *msm_host)
{
- if (!(msm_host->mmc->caps2 & MMC_CAP2_CRYPTO))
- return;
- sdhci_msm_ice_low_power_mode_enable(msm_host);
- sdhci_msm_ice_optimization_enable(msm_host);
- sdhci_msm_ice_wait_bist_status(msm_host);
-}
+ if (msm_host->mmc->caps2 & MMC_CAP2_CRYPTO)
+ return qcom_ice_suspend(msm_host->ice);
-static int __maybe_unused sdhci_msm_ice_resume(struct sdhci_msm_host *msm_host)
-{
- if (!(msm_host->mmc->caps2 & MMC_CAP2_CRYPTO))
- return 0;
- return sdhci_msm_ice_wait_bist_status(msm_host);
+ return 0;
}
/*
@@ -1972,48 +1861,28 @@ static int sdhci_msm_program_key(struct cqhci_host *cq_host,
const union cqhci_crypto_cfg_entry *cfg,
int slot)
{
- struct device *dev = mmc_dev(cq_host->mmc);
+ struct sdhci_host *host = mmc_priv(cq_host->mmc);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
union cqhci_crypto_cap_entry cap;
- union {
- u8 bytes[AES_256_XTS_KEY_SIZE];
- u32 words[AES_256_XTS_KEY_SIZE / sizeof(u32)];
- } key;
- int i;
- int err;
-
- if (!(cfg->config_enable & CQHCI_CRYPTO_CONFIGURATION_ENABLE))
- return qcom_scm_ice_invalidate_key(slot);
/* Only AES-256-XTS has been tested so far. */
cap = cq_host->crypto_cap_array[cfg->crypto_cap_idx];
if (cap.algorithm_id != CQHCI_CRYPTO_ALG_AES_XTS ||
- cap.key_size != CQHCI_CRYPTO_KEY_SIZE_256) {
- dev_err_ratelimited(dev,
- "Unhandled crypto capability; algorithm_id=%d, key_size=%d\n",
- cap.algorithm_id, cap.key_size);
+ cap.key_size != CQHCI_CRYPTO_KEY_SIZE_256)
return -EINVAL;
- }
- memcpy(key.bytes, cfg->crypto_key, AES_256_XTS_KEY_SIZE);
-
- /*
- * The SCM call byte-swaps the 32-bit words of the key. So we have to
- * do the same, in order for the final key be correct.
- */
- for (i = 0; i < ARRAY_SIZE(key.words); i++)
- __cpu_to_be32s(&key.words[i]);
-
- err = qcom_scm_ice_set_key(slot, key.bytes, AES_256_XTS_KEY_SIZE,
- QCOM_SCM_ICE_CIPHER_AES_256_XTS,
- cfg->data_unit_size);
- memzero_explicit(&key, sizeof(key));
- return err;
+ if (cfg->config_enable & CQHCI_CRYPTO_CONFIGURATION_ENABLE)
+ return qcom_ice_program_key(msm_host->ice,
+ QCOM_ICE_CRYPTO_ALG_AES_XTS,
+ QCOM_ICE_CRYPTO_KEY_SIZE_256,
+ cfg->crypto_key,
+ cfg->data_unit_size, slot);
+ else
+ return qcom_ice_evict_key(msm_host->ice, slot);
}
+
#else /* CONFIG_MMC_CRYPTO */
-static inline struct clk *sdhci_msm_ice_get_clk(struct device *dev)
-{
- return NULL;
-}
static inline int sdhci_msm_ice_init(struct sdhci_msm_host *msm_host,
struct cqhci_host *cq_host)
@@ -2025,11 +1894,17 @@ static inline void sdhci_msm_ice_enable(struct sdhci_msm_host *msm_host)
{
}
-static inline int __maybe_unused
+static inline __maybe_unused int
sdhci_msm_ice_resume(struct sdhci_msm_host *msm_host)
{
return 0;
}
+
+static inline __maybe_unused int
+sdhci_msm_ice_suspend(struct sdhci_msm_host *msm_host)
+{
+ return 0;
+}
#endif /* !CONFIG_MMC_CRYPTO */
/*****************************************************************************\
@@ -2630,11 +2505,6 @@ static int sdhci_msm_probe(struct platform_device *pdev)
clk = NULL;
msm_host->bulk_clks[3].clk = clk;
- clk = sdhci_msm_ice_get_clk(&pdev->dev);
- if (IS_ERR(clk))
- clk = NULL;
- msm_host->bulk_clks[4].clk = clk;
-
ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_host->bulk_clks),
msm_host->bulk_clks);
if (ret)
@@ -2827,7 +2697,7 @@ static __maybe_unused int sdhci_msm_runtime_suspend(struct device *dev)
clk_bulk_disable_unprepare(ARRAY_SIZE(msm_host->bulk_clks),
msm_host->bulk_clks);
- return 0;
+ return sdhci_msm_ice_suspend(msm_host);
}
static __maybe_unused int sdhci_msm_runtime_resume(struct device *dev)
--
2.34.1
On Mon, Mar 27, 2023 at 04:47:33PM +0300, Abel Vesa wrote:
> Now that there is a new dedicated ICE driver, drop the sdhci-msm ICE
> implementation and use the new ICE api provided by the Qualcomm soc
> driver ice. The platforms that already have ICE support will use the
> API as library since there will not be a devicetree node, but instead
> they have reg range. In this case, the of_qcom_ice_get will return an
> ICE instance created for the consumer's device. But if there are
> platforms that do not have ice reg in the consumer devicetree node
> and instead provide a dedicated ICE devicetree node, theof_qcom_ice_get
> will look up the device based on qcom,ice property and will get the ICE
> instance registered by the probe function of the ice driver.
>
> Signed-off-by: Abel Vesa <[email protected]>
> ---
>
> The v3 (RFC) is here:
> https://lore.kernel.org/all/[email protected]/
>
> Changes since v3:
> * added back the checks for and the setting of MMC_CAP2_CRYPTO
> * added enable/resume/suspend implementation for !CONFIG_MMC_CRYPTO
> * dropped cfg->crypto_cap_idx argument from qcom_ice_program_key
>
> Changes since v2:
> * added the suspend API call for ICE
> * kept old wrappers over ICE API in
>
> Changes since v1:
> * Added a check for supported algorithm and key size
> and passed the ICE defined values for algorithm and key size
> * Added call to evict function
>
> drivers/mmc/host/Kconfig | 2 +-
> drivers/mmc/host/sdhci-msm.c | 220 +++++++----------------------------
> 2 files changed, 46 insertions(+), 176 deletions(-)
>
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 4745fe217ade..09f837df5435 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -549,7 +549,7 @@ config MMC_SDHCI_MSM
> depends on MMC_SDHCI_PLTFM
> select MMC_SDHCI_IO_ACCESSORS
> select MMC_CQHCI
> - select QCOM_SCM if MMC_CRYPTO
> + select QCOM_INLINE_CRYPTO_ENGINE if MMC_CRYPTO
> help
> This selects the Secure Digital Host Controller Interface (SDHCI)
> support present in Qualcomm SOCs. The controller supports
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 8ac81d57a3df..1a6e63b7af12 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -19,6 +19,8 @@
> #include <linux/pinctrl/consumer.h>
> #include <linux/reset.h>
>
> +#include <soc/qcom/ice.h>
> +
> #include "sdhci-cqhci.h"
> #include "sdhci-pltfm.h"
> #include "cqhci.h"
> @@ -258,12 +260,14 @@ struct sdhci_msm_variant_info {
> struct sdhci_msm_host {
> struct platform_device *pdev;
> void __iomem *core_mem; /* MSM SDCC mapped address */
> - void __iomem *ice_mem; /* MSM ICE mapped address (if available) */
> int pwr_irq; /* power irq */
> struct clk *bus_clk; /* SDHC bus voter clock */
> struct clk *xo_clk; /* TCXO clk needed for FLL feature of cm_dll*/
> - /* core, iface, cal, sleep, and ice clocks */
> - struct clk_bulk_data bulk_clks[5];
> + /* core, iface, cal and sleep clocks */
> + struct clk_bulk_data bulk_clks[4];
> +#ifdef CONFIG_MMC_CRYPTO
> + struct qcom_ice *ice;
> +#endif
Similarly to the UFS patch, it is not clear that the calls to
clk_prepare_enable() and clk_disable_unprepare() on the ICE clock are paired up
anymore, with qcom_ice_enable() in particular seeming to be unpaired. Perhaps
it should continue to be enabled / disabled at the same time as the other host
controller clocks are enabled / disabled?
Also, are you sure that the ICE clock is actually being found?
drivers/soc/qcom/ice.c does:
engine->core_clk = devm_clk_get(dev, NULL);
if (IS_ERR(engine->core_clk))
return ERR_CAST(engine->core_clk);
It is not clear how that can get the clock named "ice" from the device tree.
- Eric
Hi Abel,
I love your patch! Perhaps something to improve:
[auto build test WARNING on robh/for-next]
[also build test WARNING on mkp-scsi/for-next jejb-scsi/for-next linus/master v6.3-rc4 next-20230327]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Abel-Vesa/dt-bindings-crypto-Add-Qualcomm-Inline-Crypto-Engine/20230327-214958
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link: https://lore.kernel.org/r/20230327134734.3256974-7-abel.vesa%40linaro.org
patch subject: [PATCH v4 6/7] mmc: sdhci-msm: Switch to the new ICE API
config: microblaze-randconfig-s042-20230326 (https://download.01.org/0day-ci/archive/20230328/[email protected]/config)
compiler: microblaze-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://github.com/intel-lab-lkp/linux/commit/2b59bf19ddc6de631e808bb2f30d5cf030f37828
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Abel-Vesa/dt-bindings-crypto-Add-Qualcomm-Inline-Crypto-Engine/20230327-214958
git checkout 2b59bf19ddc6de631e808bb2f30d5cf030f37828
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=microblaze olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=microblaze SHELL=/bin/bash drivers/soc/qcom/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/
sparse warnings: (new ones prefixed by >>)
>> drivers/soc/qcom/ice.c:273:32: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected struct qcom_ice * @@ got void [noderef] __iomem *[assigned] base @@
drivers/soc/qcom/ice.c:273:32: sparse: expected struct qcom_ice *
drivers/soc/qcom/ice.c:273:32: sparse: got void [noderef] __iomem *[assigned] base
vim +273 drivers/soc/qcom/ice.c
a9e1199fcc2742 Abel Vesa 2023-03-27 256
a9e1199fcc2742 Abel Vesa 2023-03-27 257 struct qcom_ice *of_qcom_ice_get(struct device *dev)
a9e1199fcc2742 Abel Vesa 2023-03-27 258 {
a9e1199fcc2742 Abel Vesa 2023-03-27 259 struct platform_device *pdev = to_platform_device(dev);
a9e1199fcc2742 Abel Vesa 2023-03-27 260 struct qcom_ice *ice = ERR_PTR(-EPROBE_DEFER);
a9e1199fcc2742 Abel Vesa 2023-03-27 261 struct device_node *node;
a9e1199fcc2742 Abel Vesa 2023-03-27 262 struct resource *res;
a9e1199fcc2742 Abel Vesa 2023-03-27 263 void __iomem *base;
a9e1199fcc2742 Abel Vesa 2023-03-27 264
a9e1199fcc2742 Abel Vesa 2023-03-27 265 if (!dev || !dev->of_node)
a9e1199fcc2742 Abel Vesa 2023-03-27 266 return ERR_PTR(-ENODEV);
a9e1199fcc2742 Abel Vesa 2023-03-27 267
a9e1199fcc2742 Abel Vesa 2023-03-27 268 /* legacy has ice reg range in the consumer DT node */
a9e1199fcc2742 Abel Vesa 2023-03-27 269 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ice");
a9e1199fcc2742 Abel Vesa 2023-03-27 270 if (res) {
a9e1199fcc2742 Abel Vesa 2023-03-27 271 base = devm_ioremap_resource(&pdev->dev, res);
a9e1199fcc2742 Abel Vesa 2023-03-27 272 if (IS_ERR(base))
a9e1199fcc2742 Abel Vesa 2023-03-27 @273 return base;
a9e1199fcc2742 Abel Vesa 2023-03-27 274
a9e1199fcc2742 Abel Vesa 2023-03-27 275 /* create ICE instance using consumer dev */
a9e1199fcc2742 Abel Vesa 2023-03-27 276 return qcom_ice_create(pdev, base);
a9e1199fcc2742 Abel Vesa 2023-03-27 277 }
a9e1199fcc2742 Abel Vesa 2023-03-27 278
a9e1199fcc2742 Abel Vesa 2023-03-27 279 node = of_parse_phandle(dev->of_node, "qcom,ice", 0);
a9e1199fcc2742 Abel Vesa 2023-03-27 280 if (!node) {
a9e1199fcc2742 Abel Vesa 2023-03-27 281 ice = NULL;
a9e1199fcc2742 Abel Vesa 2023-03-27 282 goto out;
a9e1199fcc2742 Abel Vesa 2023-03-27 283 }
a9e1199fcc2742 Abel Vesa 2023-03-27 284
a9e1199fcc2742 Abel Vesa 2023-03-27 285 pdev = of_find_device_by_node(node);
a9e1199fcc2742 Abel Vesa 2023-03-27 286 if (!pdev) {
a9e1199fcc2742 Abel Vesa 2023-03-27 287 dev_err(dev, "Cannot find device node %s\n", node->name);
a9e1199fcc2742 Abel Vesa 2023-03-27 288 goto out;
a9e1199fcc2742 Abel Vesa 2023-03-27 289 }
a9e1199fcc2742 Abel Vesa 2023-03-27 290
a9e1199fcc2742 Abel Vesa 2023-03-27 291 ice = platform_get_drvdata(pdev);
a9e1199fcc2742 Abel Vesa 2023-03-27 292 if (!ice) {
a9e1199fcc2742 Abel Vesa 2023-03-27 293 dev_err(dev, "Cannot get ice\n");
a9e1199fcc2742 Abel Vesa 2023-03-27 294 put_device(&pdev->dev);
a9e1199fcc2742 Abel Vesa 2023-03-27 295 return ERR_PTR(-ENODEV);
a9e1199fcc2742 Abel Vesa 2023-03-27 296 }
a9e1199fcc2742 Abel Vesa 2023-03-27 297
a9e1199fcc2742 Abel Vesa 2023-03-27 298 out:
a9e1199fcc2742 Abel Vesa 2023-03-27 299 of_node_put(node);
a9e1199fcc2742 Abel Vesa 2023-03-27 300
a9e1199fcc2742 Abel Vesa 2023-03-27 301 return ice;
a9e1199fcc2742 Abel Vesa 2023-03-27 302 }
a9e1199fcc2742 Abel Vesa 2023-03-27 303 EXPORT_SYMBOL_GPL(of_qcom_ice_get);
a9e1199fcc2742 Abel Vesa 2023-03-27 304
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests