mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-01 01:00:17 +02:00
2d581e6047
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16459 3c298f89-4303-0410-b956-a3cf2f4a3e73
275 lines
7.4 KiB
Diff
275 lines
7.4 KiB
Diff
From 62d51f0d0d0b3c758b4505c3855b61288b8e90aa Mon Sep 17 00:00:00 2001
|
|
From: San Mehat <san@android.com>
|
|
Date: Mon, 14 Apr 2008 15:22:49 -0700
|
|
Subject: [PATCH 095/134] mmc: Add concept of an 'embedded' SDIO device.
|
|
|
|
This is required to support chips which use SDIO for signaling/
|
|
communication but do not implement the various card enumeration registers
|
|
as required for full SD / SDIO cards.
|
|
|
|
mmc: sdio: Fix bug where we're freeing the CIS tables we never allocated when using EMBEDDED_SDIO
|
|
mmc: Add max_blksize to embedded SDIO data
|
|
|
|
Signed-off-by: San Mehat <san@google.com>
|
|
---
|
|
arch/arm/include/asm/mach/mmc.h | 10 ++++++
|
|
drivers/mmc/core/Kconfig | 10 +++++-
|
|
drivers/mmc/core/core.c | 16 +++++++++
|
|
drivers/mmc/core/sdio.c | 67 ++++++++++++++++++++++++++++++++-------
|
|
drivers/mmc/core/sdio_bus.c | 13 +++++++-
|
|
include/linux/mmc/host.h | 17 ++++++++++
|
|
include/linux/mmc/sdio_func.h | 8 +++++
|
|
7 files changed, 127 insertions(+), 14 deletions(-)
|
|
|
|
--- a/arch/arm/include/asm/mach/mmc.h
|
|
+++ b/arch/arm/include/asm/mach/mmc.h
|
|
@@ -5,12 +5,22 @@
|
|
#define ASMARM_MACH_MMC_H
|
|
|
|
#include <linux/mmc/host.h>
|
|
+#include <linux/mmc/card.h>
|
|
+#include <linux/mmc/sdio_func.h>
|
|
+
|
|
+struct embedded_sdio_data {
|
|
+ struct sdio_cis cis;
|
|
+ struct sdio_cccr cccr;
|
|
+ struct sdio_embedded_func *funcs;
|
|
+ int num_funcs;
|
|
+};
|
|
|
|
struct mmc_platform_data {
|
|
unsigned int ocr_mask; /* available voltages */
|
|
u32 (*translate_vdd)(struct device *, unsigned int);
|
|
unsigned int (*status)(struct device *);
|
|
unsigned int status_irq;
|
|
+ struct embedded_sdio_data *embedded_sdio;
|
|
int (*register_status_notify)(void (*callback)(int card_present, void *dev_id), void *dev_id);
|
|
};
|
|
|
|
--- a/drivers/mmc/core/Kconfig
|
|
+++ b/drivers/mmc/core/Kconfig
|
|
@@ -14,11 +14,19 @@ config MMC_UNSAFE_RESUME
|
|
This option is usually just for embedded systems which use
|
|
a MMC/SD card for rootfs. Most people should say N here.
|
|
|
|
+config MMC_EMBEDDED_SDIO
|
|
+ boolean "MMC embedded SDIO device support (EXPERIMENTAL)"
|
|
+ depends on EXPERIMENTAL
|
|
+ help
|
|
+ If you say Y here, support will be added for embedded SDIO
|
|
+ devices which do not contain the necessary enumeration
|
|
+ support in hardware to be properly detected.
|
|
+
|
|
config MMC_PARANOID_SD_INIT
|
|
bool "Enable paranoid SD card initialization (EXPERIMENTAL)"
|
|
+ depends on EXPERIMENTAL
|
|
help
|
|
If you say Y here, the MMC layer will be extra paranoid
|
|
about re-trying SD init requests. This can be a useful
|
|
work-around for buggy controllers and hardware. Enable
|
|
if you are experiencing issues with SD detection.
|
|
-
|
|
--- a/drivers/mmc/core/core.c
|
|
+++ b/drivers/mmc/core/core.c
|
|
@@ -1011,6 +1011,22 @@ EXPORT_SYMBOL(mmc_resume_host);
|
|
|
|
#endif
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+void mmc_set_embedded_sdio_data(struct mmc_host *host,
|
|
+ struct sdio_cis *cis,
|
|
+ struct sdio_cccr *cccr,
|
|
+ struct sdio_embedded_func *funcs,
|
|
+ int num_funcs)
|
|
+{
|
|
+ host->embedded_sdio_data.cis = cis;
|
|
+ host->embedded_sdio_data.cccr = cccr;
|
|
+ host->embedded_sdio_data.funcs = funcs;
|
|
+ host->embedded_sdio_data.num_funcs = num_funcs;
|
|
+}
|
|
+
|
|
+EXPORT_SYMBOL(mmc_set_embedded_sdio_data);
|
|
+#endif
|
|
+
|
|
static int __init mmc_init(void)
|
|
{
|
|
int ret;
|
|
--- a/drivers/mmc/core/sdio.c
|
|
+++ b/drivers/mmc/core/sdio.c
|
|
@@ -24,6 +24,10 @@
|
|
#include "sdio_ops.h"
|
|
#include "sdio_cis.h"
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+#include <linux/mmc/sdio_ids.h>
|
|
+#endif
|
|
+
|
|
static int sdio_read_fbr(struct sdio_func *func)
|
|
{
|
|
int ret;
|
|
@@ -314,6 +318,11 @@ int mmc_attach_sdio(struct mmc_host *hos
|
|
*/
|
|
funcs = (ocr & 0x70000000) >> 28;
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ if (host->embedded_sdio_data.funcs)
|
|
+ funcs = host->embedded_sdio_data.num_funcs;
|
|
+#endif
|
|
+
|
|
/*
|
|
* Allocate card structure.
|
|
*/
|
|
@@ -351,17 +360,33 @@ int mmc_attach_sdio(struct mmc_host *hos
|
|
/*
|
|
* Read the common registers.
|
|
*/
|
|
- err = sdio_read_cccr(card);
|
|
- if (err)
|
|
- goto remove;
|
|
|
|
- /*
|
|
- * Read the common CIS tuples.
|
|
- */
|
|
- err = sdio_read_common_cis(card);
|
|
- if (err)
|
|
- goto remove;
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ if (host->embedded_sdio_data.cccr)
|
|
+ memcpy(&card->cccr, host->embedded_sdio_data.cccr, sizeof(struct sdio_cccr));
|
|
+ else {
|
|
+#endif
|
|
+ err = sdio_read_cccr(card);
|
|
+ if (err)
|
|
+ goto remove;
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ }
|
|
+#endif
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ if (host->embedded_sdio_data.cis)
|
|
+ memcpy(&card->cis, host->embedded_sdio_data.cis, sizeof(struct sdio_cis));
|
|
+ else {
|
|
+#endif
|
|
+ /*
|
|
+ * Read the common CIS tuples.
|
|
+ */
|
|
+ err = sdio_read_common_cis(card);
|
|
+ if (err)
|
|
+ goto remove;
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ }
|
|
+#endif
|
|
/*
|
|
* Switch to high-speed (if supported).
|
|
*/
|
|
@@ -395,9 +420,27 @@ int mmc_attach_sdio(struct mmc_host *hos
|
|
* Initialize (but don't add) all present functions.
|
|
*/
|
|
for (i = 0;i < funcs;i++) {
|
|
- err = sdio_init_func(host->card, i + 1);
|
|
- if (err)
|
|
- goto remove;
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ if (host->embedded_sdio_data.funcs) {
|
|
+ struct sdio_func *tmp;
|
|
+
|
|
+ tmp = sdio_alloc_func(host->card);
|
|
+ if (IS_ERR(tmp))
|
|
+ goto remove;
|
|
+ tmp->num = (i + 1);
|
|
+ card->sdio_func[i] = tmp;
|
|
+ tmp->class = host->embedded_sdio_data.funcs[i].f_class;
|
|
+ tmp->max_blksize = host->embedded_sdio_data.funcs[i].f_maxblksize;
|
|
+ tmp->vendor = card->cis.vendor;
|
|
+ tmp->device = card->cis.device;
|
|
+ } else {
|
|
+#endif
|
|
+ err = sdio_init_func(host->card, i + 1);
|
|
+ if (err)
|
|
+ goto remove;
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ }
|
|
+#endif
|
|
}
|
|
|
|
mmc_release_host(host);
|
|
--- a/drivers/mmc/core/sdio_bus.c
|
|
+++ b/drivers/mmc/core/sdio_bus.c
|
|
@@ -20,6 +20,10 @@
|
|
#include "sdio_cis.h"
|
|
#include "sdio_bus.h"
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+#include <linux/mmc/host.h>
|
|
+#endif
|
|
+
|
|
#define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
|
|
#define to_sdio_driver(d) container_of(d, struct sdio_driver, drv)
|
|
|
|
@@ -202,7 +206,14 @@ static void sdio_release_func(struct dev
|
|
{
|
|
struct sdio_func *func = dev_to_sdio_func(dev);
|
|
|
|
- sdio_free_func_cis(func);
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ /*
|
|
+ * If this device is embedded then we never allocated
|
|
+ * cis tables for this func
|
|
+ */
|
|
+ if (!func->card->host->embedded_sdio_data.funcs)
|
|
+#endif
|
|
+ sdio_free_func_cis(func);
|
|
|
|
if (func->info)
|
|
kfree(func->info);
|
|
--- a/include/linux/mmc/host.h
|
|
+++ b/include/linux/mmc/host.h
|
|
@@ -161,6 +161,15 @@ struct mmc_host {
|
|
|
|
struct dentry *debugfs_root;
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+ struct {
|
|
+ struct sdio_cis *cis;
|
|
+ struct sdio_cccr *cccr;
|
|
+ struct sdio_embedded_func *funcs;
|
|
+ int num_funcs;
|
|
+ } embedded_sdio_data;
|
|
+#endif
|
|
+
|
|
unsigned long private[0] ____cacheline_aligned;
|
|
};
|
|
|
|
@@ -169,6 +178,14 @@ extern int mmc_add_host(struct mmc_host
|
|
extern void mmc_remove_host(struct mmc_host *);
|
|
extern void mmc_free_host(struct mmc_host *);
|
|
|
|
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
|
|
+extern void mmc_set_embedded_sdio_data(struct mmc_host *host,
|
|
+ struct sdio_cis *cis,
|
|
+ struct sdio_cccr *cccr,
|
|
+ struct sdio_embedded_func *funcs,
|
|
+ int num_funcs);
|
|
+#endif
|
|
+
|
|
static inline void *mmc_priv(struct mmc_host *host)
|
|
{
|
|
return (void *)host->private;
|
|
--- a/include/linux/mmc/sdio_func.h
|
|
+++ b/include/linux/mmc/sdio_func.h
|
|
@@ -21,6 +21,14 @@ struct sdio_func;
|
|
typedef void (sdio_irq_handler_t)(struct sdio_func *);
|
|
|
|
/*
|
|
+ * Structure used to hold embedded SDIO device data from platform layer
|
|
+ */
|
|
+struct sdio_embedded_func {
|
|
+ uint8_t f_class;
|
|
+ uint32_t f_maxblksize;
|
|
+};
|
|
+
|
|
+/*
|
|
* SDIO function CIS tuple (unknown to the core)
|
|
*/
|
|
struct sdio_func_tuple {
|