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misc: rtsx: Add SD Express mode support for RTS5261

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RTS5261 support SD mode and PCIe/NVMe mode. The workflow is as follows.
1.RTS5261 work in SD mode and set MMC_CAPS2_SD_EXP flag.
2.If card is plugged in, Host send CMD8 to ask card's PCIe availability.
3.If the card has PCIe availability and WP is not set, init_sd_express() will be invoked,
RTS5261 switch to PCIe/NVMe mode.
4.Mmc driver handover it to NVMe driver.
5.If card is unplugged, RTS5261 will switch to SD mode.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1603936668-3363-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Rui Feng 2020-10-29 09:57:48 +08:00 • committed by Ulf Hansson
parent ead49373d2
commit 5afe802132
4 changed files with 32 additions and 23 deletions
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23
include/linux/rtsx_pci.h
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@ -658,6 +658,19 @@
#define PM_WAKE_EN 0x01
#define PM_CTRL4 0xFF47
#define RTS5261_FW_CFG0 0xFF54
#define RTS5261_FW_ENTER_EXPRESS (0x01 << 0)
#define RTS5261_FW_CFG1 0xFF55
#define RTS5261_SYS_CLK_SEL_MCU_CLK (0x01 << 7)
#define RTS5261_CRC_CLK_SEL_MCU_CLK (0x01 << 6)
#define RTS5261_FAKE_MCU_CLOCK_GATING (0x01 << 5)
#define RTS5261_MCU_BUS_SEL_MASK (0x01 << 4)
#define RTS5261_MCU_CLOCK_SEL_MASK (0x03 << 2)
#define RTS5261_MCU_CLOCK_SEL_16M (0x01 << 2)
#define RTS5261_MCU_CLOCK_GATING (0x01 << 1)
#define RTS5261_DRIVER_ENABLE_FW (0x01 << 0)
#define REG_CFG_OOBS_OFF_TIMER 0xFEA6
#define REG_CFG_OOBS_ON_TIMER 0xFEA7
#define REG_CFG_VCM_ON_TIMER 0xFEA8
@ -701,6 +714,13 @@
#define RTS5260_DVCC_TUNE_MASK 0x70
#define RTS5260_DVCC_33 0x70
/*RTS5261*/
#define RTS5261_LDO1_CFG0 0xFF72
#define RTS5261_LDO1_OCP_THD_MASK (0x07 << 5)
#define RTS5261_LDO1_OCP_EN (0x01 << 4)
#define RTS5261_LDO1_OCP_LMT_THD_MASK (0x03 << 2)
#define RTS5261_LDO1_OCP_LMT_EN (0x01 << 1)
#define LDO_VCC_CFG1 0xFF73
#define LDO_VCC_REF_TUNE_MASK 0x30
#define LDO_VCC_REF_1V2 0x20
@ -741,6 +761,8 @@
#define RTS5260_AUTOLOAD_CFG4 0xFF7F
#define RTS5260_MIMO_DISABLE 0x8A
/*RTS5261*/
#define RTS5261_AUX_CLK_16M_EN (1 << 5)
#define RTS5260_REG_GPIO_CTL0 0xFC1A
#define RTS5260_REG_GPIO_MASK 0x01
@ -1191,6 +1213,7 @@ struct rtsx_pcr {
#define EXTRA_CAPS_MMC_HS200 (1 << 4)
#define EXTRA_CAPS_MMC_8BIT (1 << 5)
#define EXTRA_CAPS_NO_MMC (1 << 7)
#define EXTRA_CAPS_SD_EXPRESS (1 << 8)
u32 extra_caps;
#define IC_VER_A 0