mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-07 22:08:33 -04:00
Code Issues Packages Projects Releases Wiki Activity

scsi: ufs: renesas: Add reusable functions

Browse Source 
Since some settings can be reused on other UFS controller (R-Car S4-8
ES1.2), add reusable functions.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/446d67b751a96645799de3aeefec539735aa78c8.1741179611.git.geert+renesas@glider.be
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Yoshihiro Shimoda
2025-03-05 14:34:14 +01:00
committed by Martin K. Petersen
parent cca2b807c2
commit 44ca16f497
1 changed files with 50 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
drivers/ufs/host/ufs-renesas.c
View File

@@ -135,21 +135,8 @@ static void ufs_renesas_indirect_poll(struct ufs_hba *hba, u32 gpio, u32 addr,
ufs_renesas_write(hba, 0xf0, 0);
}
static void ufs_renesas_write_phy_10ad_10af(struct ufs_hba *hba,
u32 data_10ad, u32 data_10af)
static void ufs_renesas_init_step1_to_3(struct ufs_hba *hba)
{
ufs_renesas_write_phy(hba, 0x10ae, 0x0001);
ufs_renesas_write_phy(hba, 0x10ad, data_10ad);
ufs_renesas_write_phy(hba, 0x10af, data_10af);
ufs_renesas_write_phy(hba, 0x10b6, 0x0001);
ufs_renesas_write_phy(hba, 0x10ae, 0x0000);
}
static void ufs_renesas_pre_init(struct ufs_hba *hba)
{
u32 timer_val;
/* This setting is for SERIES B */
ufs_renesas_write(hba, 0xc0, 0x49425308);
ufs_renesas_write_d0_d4(hba, 0x00000104, 0x00000002);
udelay(1);
@@ -163,7 +150,10 @@ static void ufs_renesas_pre_init(struct ufs_hba *hba)
ufs_renesas_write(hba, 0xc0, 0x49425308);
ufs_renesas_write(hba, 0xc0, 0x41584901);
}
static void ufs_renesas_init_step4_to_6(struct ufs_hba *hba)
{
ufs_renesas_write_d0_d4(hba, 0x0000080c, 0x00000100);
ufs_renesas_write_d0_d4(hba, 0x00000804, 0x00000000);
ufs_renesas_write(hba, 0xd0, 0x0000080c);
@@ -173,6 +163,11 @@ static void ufs_renesas_pre_init(struct ufs_hba *hba)
ufs_renesas_write(hba, 0xd0, 0x00000804);
ufs_renesas_poll(hba, 0xd4, BIT(8) | BIT(6) | BIT(0), BIT(8) | BIT(6) | BIT(0));
}
static u32 ufs_renesas_init_disable_timer(struct ufs_hba *hba)
{
u32 timer_val;
ufs_renesas_write(hba, 0xd0, 0x00000d00);
timer_val = ufs_renesas_read(hba, 0xd4) & 0x0000ffff;
@@ -184,6 +179,45 @@ static void ufs_renesas_pre_init(struct ufs_hba *hba)
ufs_renesas_write(hba, 0xd0, 0x00000d2c);
ufs_renesas_poll(hba, 0xd4, BIT(0), BIT(0));
return timer_val;
}
static void ufs_renesas_init_enable_timer(struct ufs_hba *hba, u32 timer_val)
{
ufs_renesas_write(hba, 0xf0, 0);
ufs_renesas_write(hba, 0xd0, 0x00000d00);
ufs_renesas_write(hba, 0xd4, timer_val);
}
static void ufs_renesas_write_phy_10ad_10af(struct ufs_hba *hba,
u32 data_10ad, u32 data_10af)
{
ufs_renesas_write_phy(hba, 0x10ae, 0x0001);
ufs_renesas_write_phy(hba, 0x10ad, data_10ad);
ufs_renesas_write_phy(hba, 0x10af, data_10af);
ufs_renesas_write_phy(hba, 0x10b6, 0x0001);
ufs_renesas_write_phy(hba, 0x10ae, 0x0000);
}
static void ufs_renesas_init_compensation_and_slicers(struct ufs_hba *hba)
{
ufs_renesas_write_phy_10ad_10af(hba, 0x0000, 0x0001);
ufs_renesas_write_phy_10ad_10af(hba, 0x0000, 0x0002);
ufs_renesas_write_phy_10ad_10af(hba, 0x0080, 0x0000);
ufs_renesas_write_phy_10ad_10af(hba, 0x0080, 0x001a);
}
static void ufs_renesas_pre_init(struct ufs_hba *hba)
{
u32 timer_val;
/* This setting is for SERIES B */
ufs_renesas_init_step1_to_3(hba);
ufs_renesas_init_step4_to_6(hba);
timer_val = ufs_renesas_init_disable_timer(hba);
/* phy setup */
ufs_renesas_indirect_write(hba, 1, 0x01, 0x001f);
ufs_renesas_indirect_write(hba, 7, 0x5d, 0x0014);
@@ -219,10 +253,7 @@ static void ufs_renesas_pre_init(struct ufs_hba *hba)
ufs_renesas_write_phy(hba, 0x4000, 0x0000);
ufs_renesas_write_phy(hba, 0x4001, 0x0000);
ufs_renesas_write_phy_10ad_10af(hba, 0x0000, 0x0001);
ufs_renesas_write_phy_10ad_10af(hba, 0x0000, 0x0002);
ufs_renesas_write_phy_10ad_10af(hba, 0x0080, 0x0000);
ufs_renesas_write_phy_10ad_10af(hba, 0x0080, 0x001a);
ufs_renesas_init_compensation_and_slicers(hba);
ufs_renesas_indirect_write(hba, 7, 0x70, 0x0016);
ufs_renesas_indirect_write(hba, 7, 0x71, 0x0016);
@@ -249,9 +280,7 @@ static void ufs_renesas_pre_init(struct ufs_hba *hba)
ufs_renesas_indirect_poll(hba, 7, 0x41, 0, BIT(7));
/* end of phy setup */
ufs_renesas_write(hba, 0xf0, 0);
ufs_renesas_write(hba, 0xd0, 0x00000d00);
ufs_renesas_write(hba, 0xd4, timer_val);
ufs_renesas_init_enable_timer(hba, timer_val);
}
static int ufs_renesas_hce_enable_notify(struct ufs_hba *hba,