diff mbox series

[4/5] driver: spi: cadence: Add ACPI support

Message ID 20240329194849.25554-5-wsadowski@marvell.com
State New
Headers show
Series Support for Cadence xSPI Marvell modifications | expand

Commit Message

Witold Sadowski March 29, 2024, 7:48 p.m. UTC 
From: Piyush Malgujar <pmalgujar@marvell.com>

These changes enables to read the configs from ACPI tables as
required for successful probing in ACPI uefi environment.
In case of ACPI disabled/dts based environment, it will continue to
read configs from dts as before.

Signed-off-by: Piyush Malgujar <pmalgujar@marvell.com>
Signed-off-by: Witold Sadowski <wsadowski@marvell.com>
---
 drivers/spi/spi-cadence-xspi.c | 97 ++++++++++++++++++++++++++++++----
 1 file changed, 86 insertions(+), 11 deletions(-)

Comments

Krzysztof Kozlowski March 30, 2024, 11:36 a.m. UTC | #1 
On 29/03/2024 20:48, Witold Sadowski wrote:
> From: Piyush Malgujar <pmalgujar@marvell.com>
> 
> These changes enables to read the configs from ACPI tables as
> required for successful probing in ACPI uefi environment.
> In case of ACPI disabled/dts based environment, it will continue to
> read configs from dts as before.
> 

Random subjects... Please use subject prefixes matching the subsystem.
You can get them for example with `git log --oneline --
DIRECTORY_OR_FILE` on the directory your patch is touching.

>  }
>  
> +static const struct acpi_device_id cdns_xspi_acpi_match[] = {
> +	{"cdns,xspi-nor", 0},
> +	{"mrvl,xspi-nor", 0},

How is this ACPI?

> +	{},
> +};
> +MODULE_DEVICE_TABLE(acpi, cdns_xspi_acpi_match);
> +#ifdef CONFIG_OF

This was never compiled. I could understand not testing bindings,
because it is something relatively new - like 5 or 6 years. But not
compiling code is less understandable.

Best regards,
Krzysztof
kernel test robot March 31, 2024, 7:35 a.m. UTC | #2 
Hi Witold,

kernel test robot noticed the following build errors:

[auto build test ERROR on broonie-spi/for-next]
[also build test ERROR on linus/master v6.9-rc1 next-20240328]
[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/Witold-Sadowski/spi-cadence-Add-new-bindings-documentation-for-Cadence-XSPI/20240330-035124
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
patch link:    https://lore.kernel.org/r/20240329194849.25554-5-wsadowski%40marvell.com
patch subject: [PATCH 4/5] driver: spi: cadence: Add ACPI support
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240331/202403311503.5rYNyUzp-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240331/202403311503.5rYNyUzp-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403311503.5rYNyUzp-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/spi/spi-cadence-xspi.c: In function 'mrvl_ioreadq':
   drivers/spi/spi-cadence-xspi.c:535:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     535 |         if (((uint64_t)buf % 8) == 0) {
         |              ^
   drivers/spi/spi-cadence-xspi.c:537:36: error: implicit declaration of function 'readq'; did you mean 'readb'? [-Werror=implicit-function-declaration]
     537 |                         *buf64++ = readq(addr);
         |                                    ^~~~~
         |                                    readb
   drivers/spi/spi-cadence-xspi.c: In function 'mrvl_iowriteq':
   drivers/spi/spi-cadence-xspi.c:559:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     559 |         if (((uint64_t)buf % 8) == 0) {
         |              ^
   drivers/spi/spi-cadence-xspi.c:561:25: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
     561 |                         writeq(*buf64++, addr);
         |                         ^~~~~~
         |                         writel
   drivers/spi/spi-cadence-xspi.c: In function 'cdns_xspi_setup':
   drivers/spi/spi-cadence-xspi.c:869:43: error: implicit declaration of function 'spi_master_get_devdata'; did you mean 'spi_mem_get_drvdata'? [-Werror=implicit-function-declaration]
     869 |         struct cdns_xspi_dev *cdns_xspi = spi_master_get_devdata(spi_dev->master);
         |                                           ^~~~~~~~~~~~~~~~~~~~~~
         |                                           spi_mem_get_drvdata
   drivers/spi/spi-cadence-xspi.c:869:73: error: 'struct spi_device' has no member named 'master'
     869 |         struct cdns_xspi_dev *cdns_xspi = spi_master_get_devdata(spi_dev->master);
         |                                                                         ^~
   drivers/spi/spi-cadence-xspi.c: At top level:
>> drivers/spi/spi-cadence-xspi.c:993: error: unterminated #ifdef
     993 | #ifdef CONFIG_OF
         | 
   cc1: some warnings being treated as errors


vim +993 drivers/spi/spi-cadence-xspi.c

   986	
   987	static const struct acpi_device_id cdns_xspi_acpi_match[] = {
   988		{"cdns,xspi-nor", 0},
   989		{"mrvl,xspi-nor", 0},
   990		{},
   991	};
   992	MODULE_DEVICE_TABLE(acpi, cdns_xspi_acpi_match);
 > 993	#ifdef CONFIG_OF
   994	static const struct of_device_id cdns_xspi_of_match[] = {
   995		{
   996			.compatible = "cdns,xspi-nor",
   997		},
   998		{
   999			.compatible = "mrvl,xspi-nor",
  1000		},
  1001		{ /* end of table */}
  1002	};
  1003	MODULE_DEVICE_TABLE(of, cdns_xspi_of_match);
  1004
diff mbox series

Patch

diff --git a/drivers/spi/spi-cadence-xspi.c b/drivers/spi/spi-cadence-xspi.c
index cce14473e88e..01e81d40f04c 100644
--- a/drivers/spi/spi-cadence-xspi.c
+++ b/drivers/spi/spi-cadence-xspi.c
@@ -2,6 +2,7 @@ 
 // Cadence XSPI flash controller driver
 // Copyright (C) 2020-21 Cadence
 
+#include <linux/acpi.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/err.h>
@@ -14,6 +15,7 @@ 
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/spi-mem.h>
 #include <linux/bitfield.h>
@@ -686,6 +688,67 @@  static int cdns_xspi_mem_op(struct cdns_xspi_dev *cdns_xspi,
 					   (dir != SPI_MEM_NO_DATA));
 }
 
+#ifdef CONFIG_ACPI
+static bool cdns_xspi_supports_op(struct spi_mem *mem,
+				  const struct spi_mem_op *op)
+{
+	struct spi_device *spi = mem->spi;
+	const union acpi_object *obj;
+	struct acpi_device *adev;
+
+	adev = ACPI_COMPANION(&spi->dev);
+
+	if (!acpi_dev_get_property(adev, "spi-tx-bus-width", ACPI_TYPE_INTEGER,
+				   &obj)) {
+		switch (obj->integer.value) {
+		case 1:
+			break;
+		case 2:
+			spi->mode |= SPI_TX_DUAL;
+			break;
+		case 4:
+			spi->mode |= SPI_TX_QUAD;
+			break;
+		case 8:
+			spi->mode |= SPI_TX_OCTAL;
+			break;
+		default:
+			dev_warn(&spi->dev,
+				 "spi-tx-bus-width %lld not supported\n",
+				 obj->integer.value);
+			break;
+		}
+	}
+
+	if (!acpi_dev_get_property(adev, "spi-rx-bus-width", ACPI_TYPE_INTEGER,
+				   &obj)) {
+		switch (obj->integer.value) {
+		case 1:
+			break;
+		case 2:
+			spi->mode |= SPI_RX_DUAL;
+			break;
+		case 4:
+			spi->mode |= SPI_RX_QUAD;
+			break;
+		case 8:
+			spi->mode |= SPI_RX_OCTAL;
+			break;
+		default:
+			dev_warn(&spi->dev,
+				 "spi-rx-bus-width %lld not supported\n",
+				 obj->integer.value);
+			break;
+		}
+	}
+
+	if (!spi_mem_default_supports_op(mem, op))
+		return false;
+
+	return true;
+}
+#endif
+
 static int cdns_xspi_mem_op_execute(struct spi_mem *mem,
 				    const struct spi_mem_op *op)
 {
@@ -709,6 +772,9 @@  static int cdns_xspi_adjust_mem_op_size(struct spi_mem *mem, struct spi_mem_op *
 }
 
 static const struct spi_controller_mem_ops cadence_xspi_mem_ops = {
+#ifdef CONFIG_ACPI
+	.supports_op = cdns_xspi_supports_op,
+#endif
 	.exec_op = cdns_xspi_mem_op_execute,
 	.adjust_op_size = cdns_xspi_adjust_mem_op_size,
 };
@@ -760,21 +826,20 @@  static irqreturn_t cdns_xspi_irq_handler(int this_irq, void *dev)
 
 static int cdns_xspi_of_get_plat_data(struct platform_device *pdev)
 {
-	struct device_node *node_prop = pdev->dev.of_node;
-	struct device_node *node_child;
+	struct fwnode_handle *fwnode_child;
 	unsigned int cs;
 
-	for_each_child_of_node(node_prop, node_child) {
-		if (!of_device_is_available(node_child))
+	device_for_each_child_node(&pdev->dev, fwnode_child) {
+		if (!fwnode_device_is_available(fwnode_child))
 			continue;
 
-		if (of_property_read_u32(node_child, "reg", &cs)) {
+		if (fwnode_property_read_u32(fwnode_child, "reg", &cs)) {
 			dev_err(&pdev->dev, "Couldn't get memory chip select\n");
-			of_node_put(node_child);
+			fwnode_handle_put(fwnode_child);
 			return -ENXIO;
 		} else if (cs >= CDNS_XSPI_MAX_BANKS) {
 			dev_err(&pdev->dev, "reg (cs) parameter value too large\n");
-			of_node_put(node_child);
+			fwnode_handle_put(fwnode_child);
 			return -ENXIO;
 		}
 	}
@@ -816,7 +881,6 @@  static bool cdns_xspi_get_hw_overlay(struct platform_device *pdev)
 	err = device_property_match_string(&pdev->dev,
 					   "compatible", "mrvl,xspi-nor");
 
-
 	return (err >= 0);
 }
 
@@ -841,6 +905,7 @@  static int cdns_xspi_probe(struct platform_device *pdev)
 
 	host->mem_ops = &cadence_xspi_mem_ops;
 	host->dev.of_node = pdev->dev.of_node;
+	host->dev.fwnode = pdev->dev.fwnode;
 	host->bus_num = -1;
 
 	if (hw_overlay)
@@ -863,19 +928,21 @@  static int cdns_xspi_probe(struct platform_device *pdev)
 	if (ret)
 		return -ENODEV;
 
-	cdns_xspi->iobase = devm_platform_ioremap_resource_byname(pdev, "io");
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	cdns_xspi->iobase = devm_ioremap_resource(dev, res);
 	if (IS_ERR(cdns_xspi->iobase)) {
 		dev_err(dev, "Failed to remap controller base address\n");
 		return PTR_ERR(cdns_xspi->iobase);
 	}
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sdma");
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	cdns_xspi->sdmabase = devm_ioremap_resource(dev, res);
 	if (IS_ERR(cdns_xspi->sdmabase))
 		return PTR_ERR(cdns_xspi->sdmabase);
 	cdns_xspi->sdmasize = resource_size(res);
 
-	cdns_xspi->auxbase = devm_platform_ioremap_resource_byname(pdev, "aux");
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+	cdns_xspi->auxbase = devm_ioremap_resource(dev, res);
 	if (IS_ERR(cdns_xspi->auxbase)) {
 		dev_err(dev, "Failed to remap AUX address\n");
 		return PTR_ERR(cdns_xspi->auxbase);
@@ -917,6 +984,13 @@  static int cdns_xspi_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct acpi_device_id cdns_xspi_acpi_match[] = {
+	{"cdns,xspi-nor", 0},
+	{"mrvl,xspi-nor", 0},
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, cdns_xspi_acpi_match);
+#ifdef CONFIG_OF
 static const struct of_device_id cdns_xspi_of_match[] = {
 	{
 		.compatible = "cdns,xspi-nor",
@@ -933,6 +1007,7 @@  static struct platform_driver cdns_xspi_platform_driver = {
 	.driver = {
 		.name = CDNS_XSPI_NAME,
 		.of_match_table = cdns_xspi_of_match,
+		.acpi_match_table = cdns_xspi_acpi_match,
 	},
 };