mei: me: use an index instead of a pointer for private data

Device 'new_id' interface is useful for testing of not yet published
hardware on older kernels and for internally used device ids on
simulation platforms.
However currently with the device configuration held in device_id driver
data as a pointer to mei_cfg structure it is hard, as one need to locate
the address of the correct structure.
A recommended way of doing that is to use and index instead of a
pointer.
This patch adds a new list of configuration mei_cfg_list[]
indexed via enum mei_cfg_idx.
In addition it cleanups ich platform naming, renames legacy
generation to ich and what was ich to ich10.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 34 insertions, 11 deletions

diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 71216affcab1..10dcf4ff99a5 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -1354,10 +1354,10 @@ static bool mei_me_fw_type_sps(struct pci_dev *pdev)
 	.quirk_probe = mei_me_fw_type_sps
 
 
-#define MEI_CFG_LEGACY_HFS                      \
+#define MEI_CFG_ICH_HFS                      \
 	.fw_status.count = 0
 
-#define MEI_CFG_ICH_HFS                        \
+#define MEI_CFG_ICH10_HFS                        \
 	.fw_status.count = 1,                   \
 	.fw_status.status[0] = PCI_CFG_HFS_1
 
@@ -1376,38 +1376,61 @@ static bool mei_me_fw_type_sps(struct pci_dev *pdev)
 	.fw_status.status[5] = PCI_CFG_HFS_6
 
 /* ICH Legacy devices */
-const struct mei_cfg mei_me_legacy_cfg = {
-	MEI_CFG_LEGACY_HFS,
+static const struct mei_cfg mei_me_ich_cfg = {
+	MEI_CFG_ICH_HFS,
 };
 
 /* ICH devices */
-const struct mei_cfg mei_me_ich_cfg = {
-	MEI_CFG_ICH_HFS,
+static const struct mei_cfg mei_me_ich10_cfg = {
+	MEI_CFG_ICH10_HFS,
 };
 
 /* PCH devices */
-const struct mei_cfg mei_me_pch_cfg = {
+static const struct mei_cfg mei_me_pch_cfg = {
 	MEI_CFG_PCH_HFS,
 };
 
-
 /* PCH Cougar Point and Patsburg with quirk for Node Manager exclusion */
-const struct mei_cfg mei_me_pch_cpt_pbg_cfg = {
+static const struct mei_cfg mei_me_pch_cpt_pbg_cfg = {
 	MEI_CFG_PCH_HFS,
 	MEI_CFG_FW_NM,
 };
 
 /* PCH8 Lynx Point and newer devices */
-const struct mei_cfg mei_me_pch8_cfg = {
+static const struct mei_cfg mei_me_pch8_cfg = {
 	MEI_CFG_PCH8_HFS,
 };
 
 /* PCH8 Lynx Point with quirk for SPS Firmware exclusion */
-const struct mei_cfg mei_me_pch8_sps_cfg = {
+static const struct mei_cfg mei_me_pch8_sps_cfg = {
 	MEI_CFG_PCH8_HFS,
 	MEI_CFG_FW_SPS,
 };
 
+/*
+ * mei_cfg_list - A list of platform platform specific configurations.
+ * Note: has to be synchronized with  enum mei_cfg_idx.
+ */
+static const struct mei_cfg *const mei_cfg_list[] = {
+	[MEI_ME_UNDEF_CFG] = NULL,
+	[MEI_ME_ICH_CFG] = &mei_me_ich_cfg,
+	[MEI_ME_ICH10_CFG] = &mei_me_ich10_cfg,
+	[MEI_ME_PCH_CFG] = &mei_me_pch_cfg,
+	[MEI_ME_PCH_CPT_PBG_CFG] = &mei_me_pch_cpt_pbg_cfg,
+	[MEI_ME_PCH8_CFG] = &mei_me_pch8_cfg,
+	[MEI_ME_PCH8_SPS_CFG] = &mei_me_pch8_sps_cfg,
+};
+
+const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx)
+{
+	BUILD_BUG_ON(ARRAY_SIZE(mei_cfg_list) != MEI_ME_NUM_CFG);
+
+	if (idx >= MEI_ME_NUM_CFG)
+		return NULL;
+
+	return mei_cfg_list[idx];
+};
+
 /**
  * mei_me_dev_init - allocates and initializes the mei device structure
  *