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Date: Tue, 12 Jul 2016 14:16:32 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] x86/sfi: Enable enumeration of SD devices
SFI specification v0.8.2 defines type of devices which are connected to
SD bus. In particularly WiFi dongle is a such.
Add a callback to enumerate the devices connected to SD bus.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
arch/x86/include/asm/intel-mid.h | 15 +++++++++++++++
arch/x86/platform/intel-mid/sfi.c | 29 +++++++++++++++++++++++++++++
include/linux/sfi.h | 1 +
3 files changed, 45 insertions(+)
diff --git a/arch/x86/include/asm/intel-mid.h b/arch/x86/include/asm/intel-mid.h
index 59013a2..9d6b097 100644
--- a/arch/x86/include/asm/intel-mid.h
+++ b/arch/x86/include/asm/intel-mid.h
@@ -49,6 +49,21 @@ struct devs_id {
static const struct devs_id *const __intel_mid_sfi_##i##_dev __used \
__attribute__((__section__(".x86_intel_mid_dev.init"))) = &i
+/**
+* struct mid_sd_board_info - template for SD device creation
+* @name: identifies the driver
+* @bus_num: board-specific identifier for a given SD controller
+* @max_clk: the maximum frequency device supports
+* @platform_data: the particular data stored there is driver-specific
+*/
+struct mid_sd_board_info {
+ char name[SFI_NAME_LEN];
+ int bus_num;
+ unsigned short addr;
+ u32 max_clk;
+ void *platform_data;
+};
+
/*
* Medfield is the follow-up of Moorestown, it combines two chip solution into
* one. Other than that it also added always-on and constant tsc and lapic
diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c
index 5ee360a..1555672 100644
--- a/arch/x86/platform/intel-mid/sfi.c
+++ b/arch/x86/platform/intel-mid/sfi.c
@@ -407,6 +407,32 @@ static void __init sfi_handle_i2c_dev(struct sfi_device_table_entry *pentry,
i2c_register_board_info(pentry->host_num, &i2c_info, 1);
}
+static void __init sfi_handle_sd_dev(struct sfi_device_table_entry *pentry,
+ struct devs_id *dev)
+{
+ struct mid_sd_board_info sd_info;
+ void *pdata;
+
+ memset(&sd_info, 0, sizeof(sd_info));
+ strncpy(sd_info.name, pentry->name, SFI_NAME_LEN);
+ sd_info.bus_num = pentry->host_num;
+ sd_info.max_clk = pentry->max_freq;
+ sd_info.addr = pentry->addr;
+ pr_debug("SD bus = %d, name = %16.16s, max_clk = %d, addr = 0x%x\n",
+ sd_info.bus_num,
+ sd_info.name,
+ sd_info.max_clk,
+ sd_info.addr);
+ pdata = intel_mid_sfi_get_pdata(dev, &sd_info);
+ if (IS_ERR(pdata))
+ return;
+
+ /* Nothing we can do with this for now */
+ sd_info.platform_data = pdata;
+
+ pr_debug("Successfully registered %16.16s", sd_info.name);
+}
+
extern struct devs_id *const __x86_intel_mid_dev_start[],
*const __x86_intel_mid_dev_end[];
@@ -490,6 +516,9 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
case SFI_DEV_TYPE_I2C:
sfi_handle_i2c_dev(pentry, dev);
break;
+ case SFI_DEV_TYPE_SD:
+ sfi_handle_sd_dev(pentry, dev);
+ break;
case SFI_DEV_TYPE_UART:
case SFI_DEV_TYPE_HSI:
default:
diff --git a/include/linux/sfi.h b/include/linux/sfi.h
index d9b436f..e0e1597 100644
--- a/include/linux/sfi.h
+++ b/include/linux/sfi.h
@@ -156,6 +156,7 @@ struct sfi_device_table_entry {
#define SFI_DEV_TYPE_UART 2
#define SFI_DEV_TYPE_HSI 3
#define SFI_DEV_TYPE_IPC 4
+#define SFI_DEV_TYPE_SD 5
u8 host_num; /* attached to host 0, 1...*/
u16 addr;
--
2.8.1
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