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scsi: ufs: renesas: Add reusable functions

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

Ported from Linux kernel commit
44ca16f4970e ("scsi: ufs: renesas: 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>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Yoshihiro Shimoda 2026-01-03 01:22:31 +01:00 committed by Marek Vasut
parent 8bf3dc99af
commit bd07aa1aa6
1 changed files with 50 additions and 21 deletions
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71
drivers/ufs/ufs-renesas.c
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@ -130,21 +130,8 @@ 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);
@ -158,7 +145,10 @@ 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);
@ -168,6 +158,11 @@ 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;
@ -179,6 +174,45 @@ 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);
@ -214,10 +248,7 @@ 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);
@ -244,9 +275,7 @@ 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,