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path: root/drivers/mmc/host/mtk-sd.c
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Diffstat (limited to 'drivers/mmc/host/mtk-sd.c')
-rw-r--r--drivers/mmc/host/mtk-sd.c137
1 files changed, 108 insertions, 29 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 4dfc246c5f95..943940b44e83 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -8,6 +8,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/iopoll.h>
#include <linux/ioport.h>
#include <linux/irq.h>
#include <linux/of_address.h>
@@ -258,6 +259,7 @@
#define MSDC_PAD_TUNE_RD_SEL (0x1 << 13) /* RW */
#define MSDC_PAD_TUNE_CMD_SEL (0x1 << 21) /* RW */
+#define PAD_DS_TUNE_DLY_SEL (0x1 << 0) /* RW */
#define PAD_DS_TUNE_DLY1 (0x1f << 2) /* RW */
#define PAD_DS_TUNE_DLY2 (0x1f << 7) /* RW */
#define PAD_DS_TUNE_DLY3 (0x1f << 12) /* RW */
@@ -301,6 +303,11 @@
#define PAD_CMD_RD_RXDLY_SEL (0x1 << 11) /* RW */
#define PAD_CMD_TX_DLY (0x1f << 12) /* RW */
+/* EMMC50_PAD_DS_TUNE mask */
+#define PAD_DS_DLY_SEL (0x1 << 16) /* RW */
+#define PAD_DS_DLY1 (0x1f << 10) /* RW */
+#define PAD_DS_DLY3 (0x1f << 0) /* RW */
+
#define REQ_CMD_EIO (0x1 << 0)
#define REQ_CMD_TMO (0x1 << 1)
#define REQ_DAT_ERR (0x1 << 2)
@@ -448,11 +455,13 @@ struct msdc_host {
bool vqmmc_enabled;
u32 latch_ck;
u32 hs400_ds_delay;
+ u32 hs400_ds_dly3;
u32 hs200_cmd_int_delay; /* cmd internal delay for HS200/SDR104 */
u32 hs400_cmd_int_delay; /* cmd internal delay for HS400 */
bool hs400_cmd_resp_sel_rising;
/* cmd response sample selection for HS400 */
bool hs400_mode; /* current eMMC will run at hs400 mode */
+ bool hs400_tuning; /* hs400 mode online tuning */
bool internal_cd; /* Use internal card-detect logic */
bool cqhci; /* support eMMC hw cmdq */
struct msdc_save_para save_para; /* used when gate HCLK */
@@ -961,7 +970,7 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz)
}
static inline u32 msdc_cmd_find_resp(struct msdc_host *host,
- struct mmc_request *mrq, struct mmc_command *cmd)
+ struct mmc_command *cmd)
{
u32 resp;
@@ -997,7 +1006,7 @@ static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host,
* stop << 14 | rw << 13 | dtype << 11 | rsptyp << 7 | brk << 6 | opcode
*/
u32 opcode = cmd->opcode;
- u32 resp = msdc_cmd_find_resp(host, mrq, cmd);
+ u32 resp = msdc_cmd_find_resp(host, cmd);
u32 rawcmd = (opcode & 0x3f) | ((resp & 0x7) << 7);
host->cmd_rsp = resp;
@@ -1043,8 +1052,8 @@ static inline u32 msdc_cmd_prepare_raw_cmd(struct msdc_host *host,
return rawcmd;
}
-static void msdc_start_data(struct msdc_host *host, struct mmc_request *mrq,
- struct mmc_command *cmd, struct mmc_data *data)
+static void msdc_start_data(struct msdc_host *host, struct mmc_command *cmd,
+ struct mmc_data *data)
{
bool read;
@@ -1112,8 +1121,7 @@ static void msdc_recheck_sdio_irq(struct msdc_host *host)
}
}
-static void msdc_track_cmd_data(struct msdc_host *host,
- struct mmc_command *cmd, struct mmc_data *data)
+static void msdc_track_cmd_data(struct msdc_host *host, struct mmc_command *cmd)
{
if (host->error)
dev_dbg(host->dev, "%s: cmd=%d arg=%08X; host->error=0x%08X\n",
@@ -1134,7 +1142,7 @@ static void msdc_request_done(struct msdc_host *host, struct mmc_request *mrq)
host->mrq = NULL;
spin_unlock_irqrestore(&host->lock, flags);
- msdc_track_cmd_data(host, mrq->cmd, mrq->data);
+ msdc_track_cmd_data(host, mrq->cmd);
if (mrq->data)
msdc_unprepare_data(host, mrq->data);
if (host->error)
@@ -1190,7 +1198,8 @@ static bool msdc_cmd_done(struct msdc_host *host, int events,
if (!sbc_error && !(events & MSDC_INT_CMDRDY)) {
if (events & MSDC_INT_CMDTMO ||
(cmd->opcode != MMC_SEND_TUNING_BLOCK &&
- cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200))
+ cmd->opcode != MMC_SEND_TUNING_BLOCK_HS200 &&
+ !host->hs400_tuning))
/*
* should not clear fifo/interrupt as the tune data
* may have alreay come when cmd19/cmd21 gets response
@@ -1287,7 +1296,8 @@ static void msdc_cmd_next(struct msdc_host *host,
if ((cmd->error &&
!(cmd->error == -EILSEQ &&
(cmd->opcode == MMC_SEND_TUNING_BLOCK ||
- cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200))) ||
+ cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200 ||
+ host->hs400_tuning))) ||
(mrq->sbc && mrq->sbc->error))
msdc_request_done(host, mrq);
else if (cmd == mrq->sbc)
@@ -1295,7 +1305,7 @@ static void msdc_cmd_next(struct msdc_host *host,
else if (!cmd->data)
msdc_request_done(host, mrq);
else
- msdc_start_data(host, mrq, cmd, cmd->data);
+ msdc_start_data(host, cmd, cmd->data);
}
static void msdc_ops_request(struct mmc_host *mmc, struct mmc_request *mrq)
@@ -2251,6 +2261,67 @@ static int msdc_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios)
return 0;
}
+static int msdc_execute_hs400_tuning(struct mmc_host *mmc, struct mmc_card *card)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct msdc_delay_phase dly1_delay;
+ u32 val, result_dly1 = 0;
+ u8 *ext_csd;
+ int i, ret;
+
+ if (host->top_base) {
+ sdr_set_bits(host->top_base + EMMC50_PAD_DS_TUNE,
+ PAD_DS_DLY_SEL);
+ if (host->hs400_ds_dly3)
+ sdr_set_field(host->top_base + EMMC50_PAD_DS_TUNE,
+ PAD_DS_DLY3, host->hs400_ds_dly3);
+ } else {
+ sdr_set_bits(host->base + PAD_DS_TUNE, PAD_DS_TUNE_DLY_SEL);
+ if (host->hs400_ds_dly3)
+ sdr_set_field(host->base + PAD_DS_TUNE,
+ PAD_DS_TUNE_DLY3, host->hs400_ds_dly3);
+ }
+
+ host->hs400_tuning = true;
+ for (i = 0; i < PAD_DELAY_MAX; i++) {
+ if (host->top_base)
+ sdr_set_field(host->top_base + EMMC50_PAD_DS_TUNE,
+ PAD_DS_DLY1, i);
+ else
+ sdr_set_field(host->base + PAD_DS_TUNE,
+ PAD_DS_TUNE_DLY1, i);
+ ret = mmc_get_ext_csd(card, &ext_csd);
+ if (!ret)
+ result_dly1 |= (1 << i);
+ }
+ host->hs400_tuning = false;
+
+ dly1_delay = get_best_delay(host, result_dly1);
+ if (dly1_delay.maxlen == 0) {
+ dev_err(host->dev, "Failed to get DLY1 delay!\n");
+ goto fail;
+ }
+ if (host->top_base)
+ sdr_set_field(host->top_base + EMMC50_PAD_DS_TUNE,
+ PAD_DS_DLY1, dly1_delay.final_phase);
+ else
+ sdr_set_field(host->base + PAD_DS_TUNE,
+ PAD_DS_TUNE_DLY1, dly1_delay.final_phase);
+
+ if (host->top_base)
+ val = readl(host->top_base + EMMC50_PAD_DS_TUNE);
+ else
+ val = readl(host->base + PAD_DS_TUNE);
+
+ dev_info(host->dev, "Fianl PAD_DS_TUNE: 0x%x\n", val);
+
+ return 0;
+
+fail:
+ dev_err(host->dev, "Failed to tuning DS pin delay!\n");
+ return -EIO;
+}
+
static void msdc_hw_reset(struct mmc_host *mmc)
{
struct msdc_host *host = mmc_priv(mmc);
@@ -2330,6 +2401,7 @@ static void msdc_cqe_enable(struct mmc_host *mmc)
static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery)
{
struct msdc_host *host = mmc_priv(mmc);
+ unsigned int val = 0;
/* disable cmdq irq */
sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INT_CMDQ);
@@ -2339,6 +2411,9 @@ static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery)
if (recovery) {
sdr_set_field(host->base + MSDC_DMA_CTRL,
MSDC_DMA_CTRL_STOP, 1);
+ if (WARN_ON(readl_poll_timeout(host->base + MSDC_DMA_CFG, val,
+ !(val & MSDC_DMA_CFG_STS), 1, 3000)))
+ return;
msdc_reset_hw(host);
}
}
@@ -2377,6 +2452,7 @@ static const struct mmc_host_ops mt_msdc_ops = {
.card_busy = msdc_card_busy,
.execute_tuning = msdc_execute_tuning,
.prepare_hs400_tuning = msdc_prepare_hs400_tuning,
+ .execute_hs400_tuning = msdc_execute_hs400_tuning,
.hw_reset = msdc_hw_reset,
};
@@ -2396,6 +2472,9 @@ static void msdc_of_property_parse(struct platform_device *pdev,
of_property_read_u32(pdev->dev.of_node, "hs400-ds-delay",
&host->hs400_ds_delay);
+ of_property_read_u32(pdev->dev.of_node, "mediatek,hs400-ds-dly3",
+ &host->hs400_ds_dly3);
+
of_property_read_u32(pdev->dev.of_node, "mediatek,hs200-cmd-int-delay",
&host->hs200_cmd_int_delay);
@@ -2577,6 +2656,25 @@ static int msdc_drv_probe(struct platform_device *pdev)
host->dma_mask = DMA_BIT_MASK(32);
mmc_dev(mmc)->dma_mask = &host->dma_mask;
+ host->timeout_clks = 3 * 1048576;
+ host->dma.gpd = dma_alloc_coherent(&pdev->dev,
+ 2 * sizeof(struct mt_gpdma_desc),
+ &host->dma.gpd_addr, GFP_KERNEL);
+ host->dma.bd = dma_alloc_coherent(&pdev->dev,
+ MAX_BD_NUM * sizeof(struct mt_bdma_desc),
+ &host->dma.bd_addr, GFP_KERNEL);
+ if (!host->dma.gpd || !host->dma.bd) {
+ ret = -ENOMEM;
+ goto release_mem;
+ }
+ msdc_init_gpd_bd(host, &host->dma);
+ INIT_DELAYED_WORK(&host->req_timeout, msdc_request_timeout);
+ spin_lock_init(&host->lock);
+
+ platform_set_drvdata(pdev, mmc);
+ msdc_ungate_clock(host);
+ msdc_init_hw(host);
+
if (mmc->caps2 & MMC_CAP2_CQE) {
host->cq_host = devm_kzalloc(mmc->parent,
sizeof(*host->cq_host),
@@ -2597,25 +2695,6 @@ static int msdc_drv_probe(struct platform_device *pdev)
mmc->max_seg_size = 64 * 1024;
}
- host->timeout_clks = 3 * 1048576;
- host->dma.gpd = dma_alloc_coherent(&pdev->dev,
- 2 * sizeof(struct mt_gpdma_desc),
- &host->dma.gpd_addr, GFP_KERNEL);
- host->dma.bd = dma_alloc_coherent(&pdev->dev,
- MAX_BD_NUM * sizeof(struct mt_bdma_desc),
- &host->dma.bd_addr, GFP_KERNEL);
- if (!host->dma.gpd || !host->dma.bd) {
- ret = -ENOMEM;
- goto release_mem;
- }
- msdc_init_gpd_bd(host, &host->dma);
- INIT_DELAYED_WORK(&host->req_timeout, msdc_request_timeout);
- spin_lock_init(&host->lock);
-
- platform_set_drvdata(pdev, mmc);
- msdc_ungate_clock(host);
- msdc_init_hw(host);
-
ret = devm_request_irq(&pdev->dev, host->irq, msdc_irq,
IRQF_TRIGGER_NONE, pdev->name, host);
if (ret)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 01:56:12 +0100