[PATCH v2 09/14] mci: core: parse more host capabilities from DT
Steffen Trumtrar
s.trumtrar at pengutronix.de
Thu Mar 14 11:47:32 PDT 2024
Port the linux v6.7 mmc host caps2 parsing.
While at it, remove the ->no_sd and ->no_sdio. These are bits in the
caps2 field.
Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
---
drivers/mci/mci-core.c | 36 ++++++++++++++++++++++++++++++------
include/mci.h | 32 ++++++++++++++++++++++++++++++--
2 files changed, 60 insertions(+), 8 deletions(-)
diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 6c473d21bf..3e078862f2 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -2031,7 +2031,7 @@ static int mci_card_probe(struct mci *mci)
goto on_error;
}
- if (!host->no_sdio) {
+ if (!(host->caps2 & MMC_CAP2_NO_SDIO)) {
rc = sdio_send_op_cond(mci);
if (!rc) {
mci->ready_for_use = true;
@@ -2042,11 +2042,11 @@ static int mci_card_probe(struct mci *mci)
}
/* Check if this card can handle the "SD Card Physical Layer Specification 2.0" */
- if (!host->no_sd) {
+ if (!(host->caps2 & MMC_CAP2_NO_SD)) {
rc = sd_send_if_cond(mci);
rc = sd_send_op_cond(mci);
}
- if (host->no_sd || rc == -ETIMEDOUT) {
+ if ((host->caps2 & MMC_CAP2_NO_SD) || rc == -ETIMEDOUT) {
/* If SD card initialization was skipped or if it timed out,
* we check for an MMC card */
dev_dbg(&mci->dev, "Card seems to be a MultiMediaCard\n");
@@ -2253,7 +2253,7 @@ int mci_register(struct mci_host *host)
if (IS_ENABLED(CONFIG_MCI_STARTUP))
mci_card_probe(mci);
- if (!host->no_sd && dev_of_node(host->hw_dev))
+ if (!(host->caps2 & MMC_CAP2_NO_SD) && dev_of_node(host->hw_dev))
of_register_fixup(of_broken_cd_fixup, host);
list_add_tail(&mci->list, &mci_list);
@@ -2324,9 +2324,33 @@ void mci_of_parse_node(struct mci_host *host,
host->broken_cd = of_property_read_bool(np, "broken-cd");
host->non_removable = of_property_read_bool(np, "non-removable");
- host->no_sd = of_property_read_bool(np, "no-sd");
- host->no_sdio = of_property_read_bool(np, "no-sdio");
host->disable_wp = of_property_read_bool(np, "disable-wp");
+
+ if (of_property_read_bool(np, "full-pwr-cycle"))
+ host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
+ if (of_property_read_bool(np, "full-pwr-cycle-in-suspend"))
+ host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND;
+ if (of_property_read_bool(np, "no-sdio"))
+ host->caps2 |= MMC_CAP2_NO_SDIO;
+ if (of_property_read_bool(np, "no-sd"))
+ host->caps2 |= MMC_CAP2_NO_SD;
+ if (of_property_read_bool(np, "no-mmc"))
+ host->caps2 |= MMC_CAP2_NO_MMC;
+ if (IS_ENABLED(CONFIG_MCI_TUNING)) {
+ if (of_property_read_bool(np, "mmc-hs200-1_8v"))
+ host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
+ if (of_property_read_bool(np, "mmc-hs200-1_2v"))
+ host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
+ if (of_property_read_bool(np, "mmc-hs400-1_8v"))
+ host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;
+ if (of_property_read_bool(np, "mmc-hs400-1_2v"))
+ host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;
+ if (of_property_read_bool(np, "mmc-hs400-enhanced-strobe"))
+ host->caps2 |= MMC_CAP2_HS400_ES;
+ if (of_property_read_bool(np, "no-mmc-hs400"))
+ host->caps2 &= ~(MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V |
+ MMC_CAP2_HS400_ES);
+ }
}
void mci_of_parse(struct mci_host *host)
diff --git a/include/mci.h b/include/mci.h
index a72ede8db5..7a4521adde 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -468,6 +468,36 @@ struct mci_host {
const char *devname; /**< the devicename for the card, defaults to disk%d */
unsigned voltages;
unsigned host_caps; /**< Host's interface capabilities, refer MMC_VDD_* */
+ unsigned caps2; /* More host capabilities */
+#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
+#define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
+#define MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND (1 << 3) /* Can do full power cycle in suspend */
+#define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
+#define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
+#define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
+ MMC_CAP2_HS200_1_2V_SDR)
+#define MMC_CAP2_SD_EXP (1 << 7) /* SD express via PCIe */
+#define MMC_CAP2_SD_EXP_1_2V (1 << 8) /* SD express 1.2V */
+#define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
+#define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
+#define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
+#define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
+#define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
+#define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \
+ MMC_CAP2_HS400_1_2V)
+#define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)
+#define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
+#define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
+#define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
+#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
+#define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
+#define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
+#define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
+#define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */
+#define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */
+#define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */
+#define MMC_CAP2_MERGE_CAPABLE (1 << 26) /* Host can merge a segment over the segment size */
+#define MMC_CAP2_CRYPTO 0
unsigned f_min; /**< host interface lower limit */
unsigned f_max; /**< host interface upper limit */
unsigned clock; /**< Current clock used to talk to the card */
@@ -479,8 +509,6 @@ struct mci_host {
int use_dsr; /**< optional dsr usage flag */
int broken_cd; /**< card detect is broken */
bool non_removable; /**< device is non removable */
- bool no_sd; /**< do not send SD commands during initialization */
- bool no_sdio; /**< do not send SDIO commands during initialization */
bool disable_wp; /**< ignore write-protect detection logic */
struct regulator *supply;
--
2.40.1
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