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authorSreedhara DS <sreedhara.ds@intel.com>2010-07-26 10:02:46 +0100
committerMatthew Garrett <mjg@redhat.com>2010-08-03 09:50:29 -0400
commite3359fd5d2d97f4d3bca5778e35427b07a2b1060 (patch)
tree74c0d5599b8e2290aaa5fa14d30d17a222289f3c /drivers/platform
parent14d10f0a48cdfa76773cadcbf0deb233282f6b94 (diff)
downloadop-kernel-dev-e3359fd5d2d97f4d3bca5778e35427b07a2b1060.zip
op-kernel-dev-e3359fd5d2d97f4d3bca5778e35427b07a2b1060.tar.gz
intel_scu_ipc: Support Medfield processors
Changes to work on bothMmoorestown and Medfield New pci id added for Medfield Return type of ipc_data_readl chnaged from u8 to u32 Signed-off-by: Sreedhara DS <sreedhara.ds@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/intel_scu_ipc.c53
1 files changed, 33 insertions, 20 deletions
diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
index b6a0344..a0dc41e 100644
--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -151,7 +151,7 @@ static inline u8 ipc_data_readb(u32 offset) /* Read ipc byte data */
return readb(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
}
-static inline u8 ipc_data_readl(u32 offset) /* Read ipc u32 data */
+static inline u32 ipc_data_readl(u32 offset) /* Read ipc u32 data */
{
return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
}
@@ -181,18 +181,19 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
int nc;
u32 offset = 0;
u32 err = 0;
- u8 cbuf[IPC_WWBUF_SIZE] = { '\0' };
+ u8 cbuf[IPC_WWBUF_SIZE] = { };
u32 *wbuf = (u32 *)&cbuf;
mutex_lock(&ipclock);
+
if (ipcdev.pdev == NULL) {
mutex_unlock(&ipclock);
return -ENODEV;
}
- if (platform == 1) {
+ if (platform == PLATFORM_LANGWELL) {
/* Entry is 4 bytes for read/write, 5 bytes for read modify */
- for (nc = 0; nc < count; nc++) {
+ for (nc = 0; nc < count; nc++, offset += 3) {
cbuf[offset] = addr[nc];
cbuf[offset + 1] = addr[nc] >> 8;
if (id != IPC_CMD_PCNTRL_R)
@@ -201,33 +202,44 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
cbuf[offset + 3] = data[nc + 1];
offset += 1;
}
- offset += 3;
}
for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
ipc_data_writel(wbuf[nc], offset); /* Write wbuff */
+ if (id != IPC_CMD_PCNTRL_M)
+ ipc_command((count*4) << 16 | id << 12 | 0 << 8 | op);
+ else
+ ipc_command((count*5) << 16 | id << 12 | 0 << 8 | op);
+
} else {
- for (nc = 0, offset = 0; nc < count; nc++, offset += 2)
- ipc_data_writel(addr[nc], offset); /* Write addresses */
- if (id != IPC_CMD_PCNTRL_R) {
- for (nc = 0; nc < count; nc++, offset++)
- ipc_data_writel(data[nc], offset); /* Write data */
- if (id == IPC_CMD_PCNTRL_M)
- ipc_data_writel(data[nc + 1], offset); /* Mask value*/
+ for (nc = 0; nc < count; nc++, offset += 2) {
+ cbuf[offset] = addr[nc];
+ cbuf[offset + 1] = addr[nc] >> 8;
}
- }
- if (id != IPC_CMD_PCNTRL_M)
- ipc_command((count * 3) << 16 | id << 12 | 0 << 8 | op);
- else
- ipc_command((count * 4) << 16 | id << 12 | 0 << 8 | op);
+ if (id == IPC_CMD_PCNTRL_R) {
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count*2) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_W) {
+ for (nc = 0; nc < count; nc++, offset += 1)
+ cbuf[offset] = data[nc];
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count*3) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_M) {
+ cbuf[offset] = data[0];
+ cbuf[offset + 1] = data[1];
+ ipc_data_writel(wbuf[0], 0); /* Write wbuff */
+ ipc_command(4 << 16 | id << 12 | 0 << 8 | op);
+ }
+ }
err = busy_loop();
-
if (id == IPC_CMD_PCNTRL_R) { /* Read rbuf */
/* Workaround: values are read as 0 without memcpy_fromio */
- memcpy_fromio(cbuf, ipcdev.ipc_base + IPC_READ_BUFFER, 16);
- if (platform == 1) {
+ memcpy_fromio(cbuf, ipcdev.ipc_base + 0x90, 16);
+ if (platform == PLATFORM_LANGWELL) {
for (nc = 0, offset = 2; nc < count; nc++, offset += 3)
data[nc] = ipc_data_readb(offset);
} else {
@@ -800,6 +812,7 @@ static void ipc_remove(struct pci_dev *pdev)
static const struct pci_device_id pci_ids[] = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080e)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x082a)},
{ 0,}
};
MODULE_DEVICE_TABLE(pci, pci_ids);
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