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Message-ID: <CAPDyKFomqt5OMBvnFw6+h=R-PP7pywMb0XbFe1sheSXV=VENug@mail.gmail.com>
Date: Thu, 18 Sep 2014 00:36:23 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Stephen Boyd <sboyd@...eaurora.org>
Cc: Jaehoon Chung <jh80.chung@...sung.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
linux-mmc <linux-mmc@...r.kernel.org>,
Chris Ball <chris@...ntf.net>,
Georgi Djakov <gdjakov@...sol.com>,
Asutosh Das <asutoshd@...eaurora.org>,
Venkat Gopalakrishnan <venkatg@...eaurora.org>
Subject: Re: [PATCH] mmc: sdhci-msm: Make tuning block table endian agnostic
2014-09-15 23:45 GMT+02:00 Stephen Boyd <sboyd@...eaurora.org>:
> On 09/04/14 15:01, Stephen Boyd wrote:
>>
>> ----8<----
>> From: Stephen Boyd <sboyd@...eaurora.org>
>> Subject: [PATCH] mmc: Consolidate emmc tuning blocks
>>
>> The same tuning block array exists in the dw_mmc h.c and sdhci-msm.c
>> files. Move these into mmc.c so that they can be shared across
>> drivers.
>>
>> Reported-by: Jaehoon Chung <jh80.chung@...sung.com>
>> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
>> ---
>
> Hi Ulf,
>
> Can this and the previous patch be picked up for 3.18?
Sure, seems reasonable. Though I am having a bit hard to follow the
mail and patches here. Could you please repost the patches and please
do not reply to previous mail threads while doing that.
Kind regards
Uffe
>
> Thanks,
> Stephen
>
>> drivers/mmc/core/mmc.c | 32 ++++++++++++++++++++++++++++++++
>> drivers/mmc/host/dw_mmc.c | 30 ------------------------------
>> drivers/mmc/host/sdhci-msm.c | 38 ++++----------------------------------
>> include/linux/mmc/mmc.h | 5 +++++
>> 4 files changed, 41 insertions(+), 64 deletions(-)
>>
>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
>> index 793c6f7ddb04..9608cc8a1f65 100644
>> --- a/drivers/mmc/core/mmc.c
>> +++ b/drivers/mmc/core/mmc.c
>> @@ -1135,6 +1135,38 @@ bus_speed:
>> return err;
>> }
>>
>> +const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE] = {
>> + 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
>> + 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
>> + 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
>> + 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
>> + 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
>> + 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
>> + 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
>> + 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
>> +};
>> +EXPORT_SYMBOL(tuning_blk_pattern_4bit);
>> +
>> +const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE] = {
>> + 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
>> + 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
>> + 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
>> + 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
>> + 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
>> + 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
>> + 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
>> + 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
>> + 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
>> + 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
>> + 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
>> + 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
>> + 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
>> + 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
>> + 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
>> + 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
>> +};
>> +EXPORT_SYMBOL(tuning_blk_pattern_8bit);
>> +
>> /*
>> * Execute tuning sequence to seek the proper bus operating
>> * conditions for HS200 and HS400, which sends CMD21 to the device.
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index 1ac227c603b7..f1cefdf5e2d0 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -81,36 +81,6 @@ struct idmac_desc {
>> };
>> #endif /* CONFIG_MMC_DW_IDMAC */
>>
>> -static const u8 tuning_blk_pattern_4bit[] = {
>> - 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
>> - 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
>> - 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
>> - 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
>> - 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
>> - 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
>> - 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
>> - 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
>> -};
>> -
>> -static const u8 tuning_blk_pattern_8bit[] = {
>> - 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
>> - 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
>> - 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
>> - 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
>> - 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
>> - 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
>> - 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
>> - 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
>> - 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
>> - 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
>> - 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
>> - 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
>> - 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
>> - 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
>> - 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
>> - 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
>> -};
>> -
>> static inline bool dw_mci_fifo_reset(struct dw_mci *host);
>> static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host);
>>
>> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
>> index 5aabffc15ae8..da74c77f34cc 100644
>> --- a/drivers/mmc/host/sdhci-msm.c
>> +++ b/drivers/mmc/host/sdhci-msm.c
>> @@ -47,36 +47,6 @@
>> #define CMUX_SHIFT_PHASE_SHIFT 24
>> #define CMUX_SHIFT_PHASE_MASK (7 << CMUX_SHIFT_PHASE_SHIFT)
>>
>> -static const u8 tuning_block_64[] = {
>> - 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
>> - 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
>> - 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
>> - 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
>> - 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
>> - 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
>> - 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
>> - 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
>> -};
>> -
>> -static const u8 tuning_block_128[] = {
>> - 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
>> - 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
>> - 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
>> - 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
>> - 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
>> - 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
>> - 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
>> - 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
>> - 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
>> - 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
>> - 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
>> - 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
>> - 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
>> - 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
>> - 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
>> - 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
>> -};
>> -
>> struct sdhci_msm_host {
>> struct platform_device *pdev;
>> void __iomem *core_mem; /* MSM SDCC mapped address */
>> @@ -371,8 +341,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode)
>> {
>> int tuning_seq_cnt = 3;
>> u8 phase, *data_buf, tuned_phases[16], tuned_phase_cnt = 0;
>> - const u8 *tuning_block_pattern = tuning_block_64;
>> - int size = sizeof(tuning_block_64); /* Pattern size in bytes */
>> + const u8 *tuning_block_pattern = tuning_blk_pattern_4bit;
>> + int size = sizeof(tuning_blk_pattern_4bit);
>> int rc;
>> struct mmc_host *mmc = host->mmc;
>> struct mmc_ios ios = host->mmc->ios;
>> @@ -388,8 +358,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode)
>>
>> if ((opcode == MMC_SEND_TUNING_BLOCK_HS200) &&
>> (mmc->ios.bus_width == MMC_BUS_WIDTH_8)) {
>> - tuning_block_pattern = tuning_block_128;
>> - size = sizeof(tuning_block_128);
>> + tuning_block_pattern = tuning_blk_pattern_8bit;
>> + size = sizeof(tuning_blk_pattern_8bit);
>> }
>>
>> data_buf = kmalloc(size, GFP_KERNEL);
>> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
>> index 64ec963ed347..cff1f2622061 100644
>> --- a/include/linux/mmc/mmc.h
>> +++ b/include/linux/mmc/mmc.h
>> @@ -53,6 +53,11 @@
>> #define MMC_SEND_TUNING_BLOCK 19 /* adtc R1 */
>> #define MMC_SEND_TUNING_BLOCK_HS200 21 /* adtc R1 */
>>
>> +#define MMC_TUNING_BLK_PATTERN_4BIT_SIZE 64
>> +#define MMC_TUNING_BLK_PATTERN_8BIT_SIZE 128
>> +extern const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE];
>> +extern const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE];
>> +
>> /* class 3 */
>> #define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
>>
>
>
> --
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
> hosted by The Linux Foundation
>
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