[PATCH] firmware: qcom: scm: Convert to platform driver
From: Stephen Boyd <hidden>
Date: 2015-09-03 21:33:27
Also in:
linux-arm-msm, linux-devicetree, lkml
On 07/20, Andy Gross wrote:
This patch creates a platform driver for the SCM so that we can adequately manage resources. This removes clients having to carry the necessary clocks to use the SCM resources. Signed-off-by: Andy Gross <redacted> ---
It would be nice if we could use this platform device for doing the DMAish memory allocations that we do in this driver too. I guess one complication there is that we would need to allocate memory with the DMA APIs before CPUs are brought up (early_initcall level).
quoted hunk ↗ jump to hunk
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 45c008d..5dd0514 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c@@ -15,14 +15,57 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ - +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/platform_device.h>
This include is here twice.
#include <linux/cpumask.h> #include <linux/export.h> #include <linux/types.h> #include <linux/qcom_scm.h> +#include <linux/of.h> +#include <linux/clk.h>
[...]
+
+/**
+ * qcom_scm_is_available() - Checks if SCM is available
+ */
+bool qcom_scm_is_available(void)
+{
+ return !!__scm;
+}
+EXPORT_SYMBOL(qcom_scm_is_available);
+
+static int qcom_scm_remove(struct platform_device *pdev)
+{
+ __scm = NULL;
+
+ return 0;
+}Maybe we just shouldn't allow this? The firmware isn't going anywhere at runtime, and this driver is currently marked as bool in the Kconfig.
+
+static const struct of_device_id qcom_scm_dt_match[] = {
+ { .compatible = "qcom,scm",},
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, qcom_scm_dt_match);
+
+static struct platform_driver qcom_scm_driver = {
+ .driver = {
+ .name = "scm",Maybe 'qcom_scm' ?
+ .of_match_table = qcom_scm_dt_match, + }, + .probe = qcom_scm_probe, + .remove = qcom_scm_remove, +}; + +module_platform_driver(qcom_scm_driver);
Isn't there some sort of builtin_platform_driver() macro for builtin modules? -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project