lkml.org 
[lkml]   [2018]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V6 11/23] mmc: mmci: add datactrl block size variant property
Date
From: Ludovic Barre <ludovic.barre@st.com>

This patch allows to define a datactrl block size
by variant, requested by STM32 sdmmc variant.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
drivers/mmc/host/mmci.c | 13 +++++++++++--
drivers/mmc/host/mmci.h | 2 ++
2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 1b99ae3..0e8b65d 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -57,6 +57,7 @@ static struct variant_data variant_arm = {
.fifosize = 16 * 4,
.fifohalfsize = 8 * 4,
.datalength_bits = 16,
+ .datactrl_blocksz = 11,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.reversed_irq_handling = true,
@@ -70,6 +71,7 @@ static struct variant_data variant_arm_extended_fifo = {
.fifosize = 128 * 4,
.fifohalfsize = 64 * 4,
.datalength_bits = 16,
+ .datactrl_blocksz = 11,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@@ -83,6 +85,7 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
.fifohalfsize = 64 * 4,
.clkreg_enable = MCI_ARM_HWFCEN,
.datalength_bits = 16,
+ .datactrl_blocksz = 11,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@@ -97,6 +100,7 @@ static struct variant_data variant_u300 = {
.clkreg_enable = MCI_ST_U300_HWFCEN,
.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
.datalength_bits = 16,
+ .datactrl_blocksz = 11,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.pwrreg_powerup = MCI_PWR_ON,
@@ -116,6 +120,7 @@ static struct variant_data variant_nomadik = {
.clkreg = MCI_CLK_ENABLE,
.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
.datalength_bits = 24,
+ .datactrl_blocksz = 11,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -138,6 +143,7 @@ static struct variant_data variant_ux500 = {
.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
.clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE,
.datalength_bits = 24,
+ .datactrl_blocksz = 11,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -165,6 +171,7 @@ static struct variant_data variant_ux500v2 = {
.clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE,
.datactrl_mask_ddrmode = MCI_DPSM_ST_DDRMODE,
.datalength_bits = 24,
+ .datactrl_blocksz = 11,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -192,6 +199,7 @@ static struct variant_data variant_stm32 = {
.clkreg_8bit_bus_enable = MCI_ST_8BIT_BUS,
.clkreg_neg_edge_enable = MCI_ST_UX500_NEG_EDGE,
.datalength_bits = 24,
+ .datactrl_blocksz = 11,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@@ -213,6 +221,7 @@ static struct variant_data variant_qcom = {
.data_cmd_enable = MCI_CPSM_QCOM_DATCMD,
.blksz_datactrl4 = true,
.datalength_bits = 24,
+ .datactrl_blocksz = 11,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 208000000,
.explicit_mclk_control = true,
@@ -1861,13 +1870,13 @@ static int mmci_probe(struct amba_device *dev,
/*
* Block size can be up to 2048 bytes, but must be a power of two.
*/
- mmc->max_blk_size = 1 << 11;
+ mmc->max_blk_size = 1 << variant->datactrl_blocksz;

/*
* Limit the number of blocks transferred so that we don't overflow
* the maximum request size.
*/
- mmc->max_blk_count = mmc->max_req_size >> 11;
+ mmc->max_blk_count = mmc->max_req_size >> variant->datactrl_blocksz;

spin_lock_init(&host->lock);

diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index dbb5ad4..d5979e8 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -217,6 +217,7 @@ struct mmci_host;
* @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
* register
* @datactrl_mask_sdio: SDIO enable mask in datactrl register
+ * @datactrl_blksz: block size in power of two
* @pwrreg_powerup: power up value for MMCIPOWER register
* @f_max: maximum clk frequency supported by the controller.
* @signal_direction: input/out direction of bus signals can be indicated
@@ -248,6 +249,7 @@ struct variant_data {
unsigned int data_cmd_enable;
unsigned int datactrl_mask_ddrmode;
unsigned int datactrl_mask_sdio;
+ unsigned int datactrl_blocksz;
u8 st_sdio:1;
u8 st_clkdiv:1;
u8 blksz_datactrl16:1;
--
2.7.4
\
 
 \ /
  Last update: 2018-10-08 14:11    [W:0.159 / U:3.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site