Merge tag 'omap-for-v3.19/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From: Tony Lindgren <tony@atomide.com>
Subject: [GIT PULL] few fixes for the v3.19 merge window

Fixes for a few issues found that would be good to get
into -rc1:

- Update SoC revision detection for am43x es1.2

- Fix regression with GPMC timings on 2430sdp for some versions
  of u-boot

- Fix dra7 watchdog compatible property

- Fix am437x-sk-evm LCD timings

- Fix dra7 DSS clock muxing

- Fix dra7-evm voltages

- Remove a unused function prototype for am33xx_clk_init

- Enable AHCI in the omap2plus_defconfig

* tag 'omap-for-v3.19/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (1601 commits)
  ARM: omap2plus_defconfig: Enable AHCI_PLATFORM driver
  ARM: dts: am437x-sk-evm.dts: fix LCD timings
  ARM: dts: dra7-evm: Update SMPS7 (VDD_CORE) max voltage to match DM
  ARM: dts: dra7-evm: Fix typo in SMPS6 (VDD_GPU) max voltage
  ARM: OMAP2+: AM43x: Add ID for ES1.2
  ARM: dts: am437x-sk: fix lcd enable pin mux data
  ARM: dts: Fix gpmc regression for omap 2430sdp smc91x
  hwmon: (tmp401) Detect TMP435 on all addresses it supports
  mfd: rtsx: Add func to split u32 into register
  mmc: sdhci-msm: Convert to mmc_send_tuning()
  mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning()
  mmc: core: Let mmc_send_tuning() to take struct mmc_host* as parameter
  nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL
  nios2: Add missing NR_CPUS to Kconfig
  nios2: asm-offsets: Remove unused definition TI_TASK
  nios2: Remove write-only struct member from nios2_timer
  nios2: Remove unused extern declaration of shm_align_mask
  nios2: include linux/type.h in io.h
  nios2: move include asm-generic/io.h to end of file
  nios2: remove include asm-generic/iomap.h from io.h
  ...

7 files changed, 157 insertions, 34 deletions

diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig
index 8a3f51f7b1b9..db9d00c36a3e 100644
--- a/drivers/base/regmap/Kconfig
+++ b/drivers/base/regmap/Kconfig
@@ -3,12 +3,15 @@
 # subsystems should select the appropriate symbols.
 
 config REGMAP
-        default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_SPMI || REGMAP_MMIO || REGMAP_IRQ)
+        default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_SPMI || REGMAP_AC97 || REGMAP_MMIO || REGMAP_IRQ)
         select LZO_COMPRESS
         select LZO_DECOMPRESS
         select IRQ_DOMAIN if REGMAP_IRQ
         bool
 
+config REGMAP_AC97
+        tristate
+
 config REGMAP_I2C
         tristate
         depends on I2C
diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile
index a7c670b4123a..0a533653ef3b 100644
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -1,6 +1,7 @@
 obj-$(CONFIG_REGMAP) += regmap.o regcache.o
 obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o regcache-flat.o
 obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
+obj-$(CONFIG_REGMAP_AC97) += regmap-ac97.o
 obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
 obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o
 obj-$(CONFIG_REGMAP_SPMI) += regmap-spmi.o
diff --git a/drivers/base/regmap/regcache-flat.c b/drivers/base/regmap/regcache-flat.c
index d9762e41959b..0246f44ded74 100644
--- a/drivers/base/regmap/regcache-flat.c
+++ b/drivers/base/regmap/regcache-flat.c
@@ -10,9 +10,9 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 
 #include "internal.h"
 
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index e210a6d1406a..2d53f6f138e1 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -10,9 +10,9 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/lzo.h>
+#include <linux/slab.h>
 
 #include "internal.h"
 
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index f3e8fe0cc650..d453a2c98ad0 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -10,11 +10,11 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/slab.h>
-#include <linux/device.h>
 #include <linux/debugfs.h>
+#include <linux/device.h>
 #include <linux/rbtree.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 
 #include "internal.h"
 
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index f1280dc356d0..f373c35f9e1d 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -10,12 +10,12 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/device.h>
-#include <trace/events/regmap.h>
 #include <linux/bsearch.h>
+#include <linux/device.h>
+#include <linux/export.h>
+#include <linux/slab.h>
 #include <linux/sort.h>
+#include <trace/events/regmap.h>
 
 #include "internal.h"
 
@@ -36,6 +36,23 @@ static int regcache_hw_init(struct regmap *map)
         if (!map->num_reg_defaults_raw)
                 return -EINVAL;
 
+        /* calculate the size of reg_defaults */
+        for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++)
+                if (!regmap_volatile(map, i * map->reg_stride))
+                        count++;
+
+        /* all registers are volatile, so just bypass */
+        if (!count) {
+                map->cache_bypass = true;
+                return 0;
+        }
+
+        map->num_reg_defaults = count;
+        map->reg_defaults = kmalloc_array(count, sizeof(struct reg_default),
+                                          GFP_KERNEL);
+        if (!map->reg_defaults)
+                return -ENOMEM;
+
         if (!map->reg_defaults_raw) {
                 u32 cache_bypass = map->cache_bypass;
                 dev_warn(map->dev, "No cache defaults, reading back from HW\n");
@@ -43,40 +60,25 @@ static int regcache_hw_init(struct regmap *map)
                 /* Bypass the cache access till data read from HW*/
                 map->cache_bypass = 1;
                 tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);
-                if (!tmp_buf)
-                        return -EINVAL;
+                if (!tmp_buf) {
+                        ret = -ENOMEM;
+                        goto err_free;
+                }
                 ret = regmap_raw_read(map, 0, tmp_buf,
                                       map->num_reg_defaults_raw);
                 map->cache_bypass = cache_bypass;
-                if (ret < 0) {
-                        kfree(tmp_buf);
-                        return ret;
-                }
+                if (ret < 0)
+                        goto err_cache_free;
+
                 map->reg_defaults_raw = tmp_buf;
                 map->cache_free = 1;
         }
 
-        /* calculate the size of reg_defaults */
-        for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++) {
-                val = regcache_get_val(map, map->reg_defaults_raw, i);
-                if (regmap_volatile(map, i * map->reg_stride))
-                        continue;
-                count++;
-        }
-
-        map->reg_defaults = kmalloc(count * sizeof(struct reg_default),
-                                      GFP_KERNEL);
-        if (!map->reg_defaults) {
-                ret = -ENOMEM;
-                goto err_free;
-        }
-
         /* fill the reg_defaults */
-        map->num_reg_defaults = count;
         for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {
-                val = regcache_get_val(map, map->reg_defaults_raw, i);
                 if (regmap_volatile(map, i * map->reg_stride))
                         continue;
+                val = regcache_get_val(map, map->reg_defaults_raw, i);
                 map->reg_defaults[j].reg = i * map->reg_stride;
                 map->reg_defaults[j].def = val;
                 j++;
@@ -84,9 +86,10 @@ static int regcache_hw_init(struct regmap *map)
 
         return 0;
 
+err_cache_free:
+        kfree(tmp_buf);
 err_free:
-        if (map->cache_free)
-                kfree(map->reg_defaults_raw);
+        kfree(map->reg_defaults);
 
         return ret;
 }
@@ -150,6 +153,8 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
                 ret = regcache_hw_init(map);
                 if (ret < 0)
                         return ret;
+                if (map->cache_bypass)
+                        return 0;
         }
 
         if (!map->max_register)
diff --git a/drivers/base/regmap/regmap-ac97.c b/drivers/base/regmap/regmap-ac97.c
new file mode 100644
index 000000000000..e4c45d2299c1
--- /dev/null
+++ b/drivers/base/regmap/regmap-ac97.c
@@ -0,0 +1,114 @@
+/*
+ * Register map access API - AC'97 support
+ *
+ * Copyright 2013 Linaro Ltd.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <sound/ac97_codec.h>
+
+bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg)
+{
+        switch (reg) {
+        case AC97_RESET:
+        case AC97_POWERDOWN:
+        case AC97_INT_PAGING:
+        case AC97_EXTENDED_ID:
+        case AC97_EXTENDED_STATUS:
+        case AC97_EXTENDED_MID:
+        case AC97_EXTENDED_MSTATUS:
+        case AC97_GPIO_STATUS:
+        case AC97_MISC_AFE:
+        case AC97_VENDOR_ID1:
+        case AC97_VENDOR_ID2:
+        case AC97_CODEC_CLASS_REV:
+        case AC97_PCI_SVID:
+        case AC97_PCI_SID:
+        case AC97_FUNC_SELECT:
+        case AC97_FUNC_INFO:
+        case AC97_SENSE_INFO:
+                return true;
+        default:
+                return false;
+        }
+}
+EXPORT_SYMBOL_GPL(regmap_ac97_default_volatile);
+
+static int regmap_ac97_reg_read(void *context, unsigned int reg,
+        unsigned int *val)
+{
+        struct snd_ac97 *ac97 = context;
+
+        *val = ac97->bus->ops->read(ac97, reg);
+
+        return 0;
+}
+
+static int regmap_ac97_reg_write(void *context, unsigned int reg,
+        unsigned int val)
+{
+        struct snd_ac97 *ac97 = context;
+
+        ac97->bus->ops->write(ac97, reg, val);
+
+        return 0;
+}
+
+static const struct regmap_bus ac97_regmap_bus = {
+                .reg_write = regmap_ac97_reg_write,
+                .reg_read = regmap_ac97_reg_read,
+};
+
+/**
+ * regmap_init_ac97(): Initialise AC'97 register map
+ *
+ * @ac97: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer to
+ * a struct regmap.
+ */
+struct regmap *regmap_init_ac97(struct snd_ac97 *ac97,
+                                const struct regmap_config *config)
+{
+        return regmap_init(&ac97->dev, &ac97_regmap_bus, ac97, config);
+}
+EXPORT_SYMBOL_GPL(regmap_init_ac97);
+
+/**
+ * devm_regmap_init_ac97(): Initialise AC'97 register map
+ *
+ * @ac97: Device that will be interacted with
+ * @config: Configuration for register map
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer
+ * to a struct regmap.  The regmap will be automatically freed by the
+ * device management code.
+ */
+struct regmap *devm_regmap_init_ac97(struct snd_ac97 *ac97,
+                                     const struct regmap_config *config)
+{
+        return devm_regmap_init(&ac97->dev, &ac97_regmap_bus, ac97, config);
+}
+EXPORT_SYMBOL_GPL(devm_regmap_init_ac97);
+
+MODULE_LICENSE("GPL v2");