korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-28 22:54:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

thunderbolt: Convert basic adapter register names to follow the USB4 spec

Browse Source 
Now that USB4 spec has names for these basic registers we can use them
instead. This makes it easier to match certain register to the spec.

No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Mika Westerberg 2019-09-06 11:59:00 +03:00
parent af99f696b5
commit 8f57d47806
3 changed files with 22 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/thunderbolt/switch.c
View File

@ -553,17 +553,17 @@ int tb_port_add_nfc_credits(struct tb_port *port, int credits)
if (credits == 0 || port->sw->is_unplugged)
return 0;
nfc_credits = port->config.nfc_credits & TB_PORT_NFC_CREDITS_MASK;
nfc_credits = port->config.nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK;
nfc_credits += credits;
tb_port_dbg(port, "adding %d NFC credits to %lu",
credits, port->config.nfc_credits & TB_PORT_NFC_CREDITS_MASK);
tb_port_dbg(port, "adding %d NFC credits to %lu", credits,
port->config.nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK);
port->config.nfc_credits &= ~TB_PORT_NFC_CREDITS_MASK;
port->config.nfc_credits &= ~ADP_CS_4_NFC_BUFFERS_MASK;
port->config.nfc_credits |= nfc_credits;
return tb_port_write(port, &port->config.nfc_credits,
TB_CFG_PORT, 4, 1);
TB_CFG_PORT, ADP_CS_4, 1);
}
/**
@ -578,14 +578,14 @@ int tb_port_set_initial_credits(struct tb_port *port, u32 credits)
u32 data;
int ret;
ret = tb_port_read(port, &data, TB_CFG_PORT, 5, 1);
ret = tb_port_read(port, &data, TB_CFG_PORT, ADP_CS_5, 1);
if (ret)
return ret;
data &= ~TB_PORT_LCA_MASK;
data |= (credits << TB_PORT_LCA_SHIFT) & TB_PORT_LCA_MASK;
data &= ~ADP_CS_5_LCA_MASK;
data |= (credits << ADP_CS_5_LCA_SHIFT) & ADP_CS_5_LCA_MASK;
return tb_port_write(port, &data, TB_CFG_PORT, 5, 1);
return tb_port_write(port, &data, TB_CFG_PORT, ADP_CS_5, 1);
}
/**

15
drivers/thunderbolt/tb_regs.h
View File

@ -211,13 +211,14 @@ struct tb_regs_port_header {
} __packed;
/* DWORD 4 */
#define TB_PORT_NFC_CREDITS_MASK GENMASK(19, 0)
#define TB_PORT_MAX_CREDITS_SHIFT 20
#define TB_PORT_MAX_CREDITS_MASK GENMASK(26, 20)
/* DWORD 5 */
#define TB_PORT_LCA_SHIFT 22
#define TB_PORT_LCA_MASK GENMASK(28, 22)
/* Basic adapter configuration registers */
#define ADP_CS_4 0x04
#define ADP_CS_4_NFC_BUFFERS_MASK GENMASK(9, 0)
#define ADP_CS_4_TOTAL_BUFFERS_MASK GENMASK(29, 20)
#define ADP_CS_4_TOTAL_BUFFERS_SHIFT 20
#define ADP_CS_5 0x05
#define ADP_CS_5_LCA_MASK GENMASK(28, 22)
#define ADP_CS_5_LCA_SHIFT 22
/* Display Port adapter registers */

10
drivers/thunderbolt/tunnel.c
View File

@ -324,12 +324,12 @@ static void tb_dp_init_video_path(struct tb_path *path, bool discover)
path->weight = 1;
if (discover) {
path->nfc_credits = nfc_credits & TB_PORT_NFC_CREDITS_MASK;
path->nfc_credits = nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK;
} else {
u32 max_credits;
max_credits = (nfc_credits & TB_PORT_MAX_CREDITS_MASK) >>
TB_PORT_MAX_CREDITS_SHIFT;
max_credits = (nfc_credits & ADP_CS_4_TOTAL_BUFFERS_MASK) >>
ADP_CS_4_TOTAL_BUFFERS_SHIFT;
/* Leave some credits for AUX path */
path->nfc_credits = min(max_credits - 2, 12U);
}
@ -478,8 +478,8 @@ static u32 tb_dma_credits(struct tb_port *nhi)
{
u32 max_credits;
max_credits = (nhi->config.nfc_credits & TB_PORT_MAX_CREDITS_MASK) >>
TB_PORT_MAX_CREDITS_SHIFT;
max_credits = (nhi->config.nfc_credits & ADP_CS_4_TOTAL_BUFFERS_MASK) >>
ADP_CS_4_TOTAL_BUFFERS_SHIFT;
return min(max_credits, 13U);
}