mfd: intel-lpss: Provide an SSP type to the driver

The SPI driver wants to know the exact type of the controller.
Provide this information to it, hence it allows to fix the
Intel Cannon Lake and others in the future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220301205056.79810-1-andriy.shevchenko@linux.intel.com

diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
index f2ea654..a143c8d 100644 (file)
--- a/drivers/mfd/intel-lpss-acpi.c
+++ b/drivers/mfd/intel-lpss-acpi.c
@@ -15,11 +15,22 @@
 #include <linux/pm_runtime.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
+#include <linux/pxa2xx_ssp.h>
 
 #include "intel-lpss.h"
 
+static const struct property_entry spt_spi_properties[] = {
+       PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),
+       { }
+};
+
+static const struct software_node spt_spi_node = {
+       .properties = spt_spi_properties,
+};
+
 static const struct intel_lpss_platform_info spt_info = {
        .clk_rate = 120000000,
+       .swnode = &spt_spi_node,
 };
 
 static const struct property_entry spt_i2c_properties[] = {
@@ -53,8 +64,18 @@ static const struct intel_lpss_platform_info spt_uart_info = {
        .swnode = &uart_node,
 };
 
+static const struct property_entry bxt_spi_properties[] = {
+       PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),
+       { }
+};
+
+static const struct software_node bxt_spi_node = {
+       .properties = bxt_spi_properties,
+};
+
 static const struct intel_lpss_platform_info bxt_info = {
        .clk_rate = 100000000,
+       .swnode = &bxt_spi_node,
 };
 
 static const struct property_entry bxt_i2c_properties[] = {
@@ -89,6 +110,20 @@ static const struct intel_lpss_platform_info apl_i2c_info = {
        .swnode = &apl_i2c_node,
 };
 
+static const struct property_entry cnl_spi_properties[] = {
+       PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_CNL_SSP),
+       { }
+};
+
+static const struct software_node cnl_spi_node = {
+       .properties = cnl_spi_properties,
+};
+
+static const struct intel_lpss_platform_info cnl_info = {
+       .clk_rate = 120000000,
+       .swnode = &cnl_spi_node,
+};
+
 static const struct intel_lpss_platform_info cnl_i2c_info = {
        .clk_rate = 216000000,
        .swnode = &spt_i2c_node,
@@ -108,8 +143,8 @@ static const struct acpi_device_id intel_lpss_acpi_ids[] = {
        { "INT3449", (kernel_ulong_t)&spt_uart_info },
        { "INT344A", (kernel_ulong_t)&spt_uart_info },
        /* CNL */
-       { "INT34B0", (kernel_ulong_t)&spt_info },
-       { "INT34B1", (kernel_ulong_t)&spt_info },
+       { "INT34B0", (kernel_ulong_t)&cnl_info },
+       { "INT34B1", (kernel_ulong_t)&cnl_info },
        { "INT34B2", (kernel_ulong_t)&cnl_i2c_info },
        { "INT34B3", (kernel_ulong_t)&cnl_i2c_info },
        { "INT34B4", (kernel_ulong_t)&cnl_i2c_info },
@@ -119,7 +154,7 @@ static const struct acpi_device_id intel_lpss_acpi_ids[] = {
        { "INT34B8", (kernel_ulong_t)&spt_uart_info },
        { "INT34B9", (kernel_ulong_t)&spt_uart_info },
        { "INT34BA", (kernel_ulong_t)&spt_uart_info },
-       { "INT34BC", (kernel_ulong_t)&spt_info },
+       { "INT34BC", (kernel_ulong_t)&cnl_info },
        /* BXT */
        { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
        { "80860ABC", (kernel_ulong_t)&bxt_info },