github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 16:44:58 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

net: ipa: encapsulate updating three more registers

Browse Source 
Create a new function that encapsulates setting the BCR, TX_CFG, and
CLKON_CFG register values during hardware configuration.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2022-09-22 17:21:00 -05:00 committed by Jakub Kicinski
parent 1e5db0965e
commit 92073b1648
1 changed files with 53 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
drivers/net/ipa/ipa_main.c
View File

@ -183,6 +183,56 @@ static void ipa_teardown(struct ipa *ipa)
gsi_teardown(&ipa->gsi);
}
static void
ipa_hardware_config_bcr(struct ipa *ipa, const struct ipa_data *data)
{
u32 val;
/* IPA v4.5+ has no backward compatibility register */
if (ipa->version >= IPA_VERSION_4_5)
return;
val = data->backward_compat;
iowrite32(val, ipa->reg_virt + IPA_REG_BCR_OFFSET);
}
static void ipa_hardware_config_tx(struct ipa *ipa)
{
enum ipa_version version = ipa->version;
u32 val;
if (version <= IPA_VERSION_4_0 || version >= IPA_VERSION_4_5)
return;
/* Disable PA mask to allow HOLB drop */
val = ioread32(ipa->reg_virt + IPA_REG_TX_CFG_OFFSET);
val &= ~PA_MASK_EN_FMASK;
iowrite32(val, ipa->reg_virt + IPA_REG_TX_CFG_OFFSET);
}
static void ipa_hardware_config_clkon(struct ipa *ipa)
{
enum ipa_version version = ipa->version;
u32 val;
if (version < IPA_VERSION_3_1 || version >= IPA_VERSION_4_5)
return;
/* Implement some hardware workarounds */
if (version >= IPA_VERSION_4_0) {
/* Enable open global clocks in the CLKON configuration */
val = GLOBAL_FMASK | GLOBAL_2X_CLK_FMASK;
} else if (version == IPA_VERSION_3_1) {
val = MISC_FMASK; /* Disable MISC clock gating */
} else {
return;
}
iowrite32(val, ipa->reg_virt + IPA_REG_CLKON_CFG_OFFSET);
}
/* Configure bus access behavior for IPA components */
static void ipa_hardware_config_comp(struct ipa *ipa)
{
@ -382,32 +432,9 @@ static void ipa_hardware_dcd_deconfig(struct ipa *ipa)
*/
static void ipa_hardware_config(struct ipa *ipa, const struct ipa_data *data)
{
enum ipa_version version = ipa->version;
u32 val;
/* IPA v4.5+ has no backward compatibility register */
if (version < IPA_VERSION_4_5) {
val = data->backward_compat;
iowrite32(val, ipa->reg_virt + IPA_REG_BCR_OFFSET);
}
/* Implement some hardware workarounds */
if (version >= IPA_VERSION_4_0 && version < IPA_VERSION_4_5) {
/* Disable PA mask to allow HOLB drop */
val = ioread32(ipa->reg_virt + IPA_REG_TX_CFG_OFFSET);
val &= ~PA_MASK_EN_FMASK;
iowrite32(val, ipa->reg_virt + IPA_REG_TX_CFG_OFFSET);
/* Enable open global clocks in the CLKON configuration */
val = GLOBAL_FMASK | GLOBAL_2X_CLK_FMASK;
} else if (version == IPA_VERSION_3_1) {
val = MISC_FMASK; /* Disable MISC clock gating */
} else {
val = 0; /* No CLKON configuration needed */
}
if (val)
iowrite32(val, ipa->reg_virt + IPA_REG_CLKON_CFG_OFFSET);
ipa_hardware_config_bcr(ipa, data);
ipa_hardware_config_tx(ipa);
ipa_hardware_config_clkon(ipa);
ipa_hardware_config_comp(ipa);
ipa_hardware_config_qsb(ipa, data);
ipa_hardware_config_timing(ipa);