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@@ -1,6 +1,188 @@
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15.2.1544.9; Wed, 20 Nov 2024 01:15:53 -0800
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From: Md Sadre Alam <quic_mdalam@quicinc.com>
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Date: Sun, 22 Sep 2024 17:03:49 +0530
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Subject: [PATCH] spi: spi-qpic: add driver for QCOM SPI NAND flash Interface
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To: <broonie@kernel.org>, <robh@kernel.org>, <krzk+dt@kernel.org>,
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<conor+dt@kernel.org>, <andersson@kernel.org>,
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CC: <quic_srichara@quicinc.com>, <quic_varada@quicinc.com>,
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<quic_mdalam@quicinc.com>
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Subject: [PATCH v14 6/8] spi: spi-qpic: add driver for QCOM SPI NAND flash
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Interface
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Date: Wed, 20 Nov 2024 14:45:04 +0530
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References: <20241120091507.1404368-1-quic_mdalam@quicinc.com>
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Content preview: This driver implements support for the SPI-NAND mode of
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QCOM
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NAND Flash Interface as a SPI-MEM controller with pipelined ECC
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capability.
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Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
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Signed-off-by:
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Sricharan Ramabadhran <quic_srichara@quicinc.com> Co-developed-by:
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Varadarajan
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Narayanan <quic_varada@quicinc.com> Sig [...]
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This driver implements support for the SPI-NAND mode of QCOM NAND Flash
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Interface as a SPI-MEM controller with pipelined ECC capability.
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@@ -11,6 +193,192 @@ Co-developed-by: Varadarajan Narayanan <quic_varada@quicinc.com>
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Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
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Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
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---
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Change in [v14]
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* No Change
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Change in [v13]
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* Changed return type of qcom_spi_cmd_mapping() from u32 to
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int to fix the kernel test bot warning
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* Changed type of variable cmd in qcom_spi_write_page() from u32
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to int
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* Removed unused variable s_op from qcom_spi_write_page()
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* Updated return value variable type from u32 to int in
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qcom_spi_send_cmdaddr()
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Change in [v12]
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* Added obj-$(CONFIG_SPI_QPIC_SNAND) += qpic_common.o in Makefile
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to build qpic_common.c based on CONFIG_SPI_QPIC_SNAND
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Change in [v11]
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* Fixed build error reported by kernel test bot
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* Changed "depends on MTD" to "select MTD" in
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drivers/spi/Kconfig file
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Change in [v10]
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* Fixed compilation warnings reported by kernel test robot.
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* Added depends on CONFIG_MTD
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* removed extra bracket from statement if (i == (num_cw - 1)) in
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qcom_spi_program_raw() api.
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Change in [v9]
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* Changed data type of addr1, addr2, cmd, to __le32 in qpic_spi_nand
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|
structure
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* In qcom_spi_set_read_loc_first() api added cpu_to_le32() macro to fix
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compilation warning
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* In qcom_spi_set_read_loc_last() api added cpu_to_le32() macro to fix
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compilation warning
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* In qcom_spi_init() api added cpu_to_le32() macro to fix compilation
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|
warning
|
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* In qcom_spi_ecc_init_ctx_pipelined() api removed unused variables
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reqs, user, step_size, strength and added cpu_to_le32() macro as well
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to fix compilation warning
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* In qcom_spi_read_last_cw() api added cpu_to_le32() macro to fix compilation
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|
warning
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* In qcom_spi_check_error() api added cpu_to_le32() macro to fix compilation
|
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|
warning
|
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* In qcom_spi_read_page_ecc() api added cpu_to_le32() macro to fix compilation
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|
warning
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* In qcom_spi_read_page_oob() api added cpu_to_le32() macro to fix compilation
|
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|
warning
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* In qcom_spi_program_raw() api added cpu_to_le32() macro to fix compilation
|
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|
warning
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* In qcom_spi_program_ecc() api added cpu_to_le32() macro to fix compilation
|
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|
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|
warning
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* In qcom_spi_program_oob() api added cpu_to_le32() macro to fix compilation
|
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|
warning
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* In qcom_spi_send_cmdaddr() api added cpu_to_le32() macro to fix compilation
|
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warning
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* In qcom_spi_io_op() api added cpu_to_le32() macro to fix compilation
|
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warning
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Change in [v8]
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* Included "bitfield.h" file to /spi-qpic-snand.c
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to fix compilation warning reported by kernel test robot
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* Removed unused variable "steps" in
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|
|
qcom_spi_ecc_init_ctx_pipelined() to fix compilation warning
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Change in [v7]
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* Added read_oob() and write_oob() api
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* Handled offset value for oob layout
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* Made CONFIG_SPI_QPIC_SNAND as bool
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* Added macro ecceng_to_qspi()
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* Added FIELD_PREP() Macro in spi init
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* Added else condition in
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|
qcom_spi_ecc_finish_io_req_pipelined()
|
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|
for corrected ecc
|
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* Handled multiple error condition for api
|
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|
qcom_spi_cmd_mapping()
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* Fix typo for printing debug message
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Change in [v6]
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|
|
* Added separate qpic_spi_nand{...} struct
|
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|
|
* moved qpic_ecc and qcom_ecc_stats struct to
|
|
|
|
|
spi-qpic-snand.c file, since its spi nand
|
|
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|
|
specific
|
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|
|
* Added FIELD_PREP() and GENMASK() macro
|
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|
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|
|
* Removed rawnand.h and partition.h from
|
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|
|
spi-qpic-snand.c
|
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|
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* Removed oob_buff assignment form
|
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|
|
|
qcom_spi_write_page_cache
|
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|
|
* Added qcom_nand_unalloc() in remove() path
|
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|
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|
|
* Fixes all all comments
|
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|
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|
|
Change in [v5]
|
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|
|
* Added raw_read() and raw_write() api
|
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|
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|
* Updated commit message
|
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|
* Removed register indirection
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|
|
* Added qcom_spi_ prefix to all the api
|
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|
|
* Removed snand_set_reg() api.
|
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|
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* Fixed nandbiterr issue
|
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* Removed hardcoded num_cw and made it variable
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* Removed hardcoded value for mtd pagesize
|
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|
* Added -ENOSUPPORT in cmd mapping for unsupported
|
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|
|
commands
|
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|
|
* Replace if..else with switch..case statement
|
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|
Change in [v4]
|
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|
|
* No change
|
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|
|
Change in [v3]
|
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|
|
* Set SPI_QPIC_SNAND to n and added COMPILE_TEST in Kconfig
|
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|
|
* Made driver name sorted in Make file
|
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|
|
* Made comment like c++
|
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|
* Changed macro to functions, snandc_set_read_loc_last()
|
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|
|
and snandc_set_read_loc_first()
|
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|
|
* Added error handling in snandc_set_reg()
|
|
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|
|
* Changed into normal conditional statement for
|
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|
|
|
return snandc->ecc_stats.failed ? -EBADMSG :
|
|
|
|
|
snandc->ecc_stats.bitflips;
|
|
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|
|
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|
|
* Remove cast of wbuf in qpic_snand_program_execute()
|
|
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|
|
function
|
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|
|
* Made num_cw variable instead hardcoded value
|
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|
|
* changed if..else condition of function qpic_snand_io_op()
|
|
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|
|
to switch..case statement
|
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|
|
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|
|
* Added __devm_spi_alloc_controller() api instead of
|
|
|
|
|
devm_spi_alloc_master()
|
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|
|
|
|
|
|
|
* Disabling clock in remove path
|
|
|
|
|
|
|
|
|
|
Change in [v2]
|
|
|
|
|
|
|
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|
|
* Added initial support for SPI-NAND driver
|
|
|
|
|
|
|
|
|
|
Change in [v1]
|
|
|
|
|
|
|
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|
|
* Added RFC patch for design review
|
|
|
|
|
|
|
|
|
|
drivers/mtd/nand/Makefile | 4 +
|
|
|
|
|
drivers/spi/Kconfig | 9 +
|
|
|
|
|
drivers/spi/Makefile | 1 +
|
|
|
|
|
drivers/spi/spi-qpic-snand.c | 1633 ++++++++++++++++++++++++++
|
|
|
|
|
include/linux/mtd/nand-qpic-common.h | 7 +
|
|
|
|
|
5 files changed, 1654 insertions(+)
|
|
|
|
|
create mode 100644 drivers/spi/spi-qpic-snand.c
|
|
|
|
|
|
|
|
|
|
--- a/drivers/mtd/nand/Makefile
|
|
|
|
|
+++ b/drivers/mtd/nand/Makefile
|
|
|
|
|
@@ -4,7 +4,11 @@ nandcore-objs := core.o bbt.o
|
|
|
|
|
@@ -27,13 +395,14 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
obj-y += spi/
|
|
|
|
|
--- a/drivers/spi/Kconfig
|
|
|
|
|
+++ b/drivers/spi/Kconfig
|
|
|
|
|
@@ -870,6 +870,14 @@ config SPI_QCOM_QSPI
|
|
|
|
|
@@ -870,6 +870,15 @@ config SPI_QCOM_QSPI
|
|
|
|
|
help
|
|
|
|
|
QSPI(Quad SPI) driver for Qualcomm QSPI controller.
|
|
|
|
|
|
|
|
|
|
+config SPI_QPIC_SNAND
|
|
|
|
|
+ bool "QPIC SNAND controller"
|
|
|
|
|
+ depends on ARCH_QCOM || COMPILE_TEST
|
|
|
|
|
+ select MTD
|
|
|
|
|
+ help
|
|
|
|
|
+ QPIC_SNAND (QPIC SPI NAND) driver for Qualcomm QPIC controller.
|
|
|
|
|
+ QPIC controller supports both parallel nand and serial nand.
|
|
|
|
|
@@ -54,7 +423,7 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
obj-$(CONFIG_SPI_ROCKCHIP_SFC) += spi-rockchip-sfc.o
|
|
|
|
|
--- /dev/null
|
|
|
|
|
+++ b/drivers/spi/spi-qpic-snand.c
|
|
|
|
|
@@ -0,0 +1,1634 @@
|
|
|
|
|
@@ -0,0 +1,1633 @@
|
|
|
|
|
+/*
|
|
|
|
|
+ * SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
+ *
|
|
|
|
|
@@ -1072,7 +1441,7 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+ data_size1 = mtd->writesize - ecc_cfg->cw_size * (num_cw - 1);
|
|
|
|
|
+ oob_size1 = ecc_cfg->bbm_size;
|
|
|
|
|
+
|
|
|
|
|
+ if ((i == (num_cw - 1))) {
|
|
|
|
|
+ if (i == (num_cw - 1)) {
|
|
|
|
|
+ data_size2 = NANDC_STEP_SIZE - data_size1 -
|
|
|
|
|
+ ((num_cw - 1) << 2);
|
|
|
|
|
+ oob_size2 = (num_cw << 2) + ecc_cfg->ecc_bytes_hw +
|
|
|
|
|
@@ -1257,9 +1626,9 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+ return 0;
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+static u32 qcom_spi_cmd_mapping(struct qcom_nand_controller *snandc, u32 opcode)
|
|
|
|
|
+static int qcom_spi_cmd_mapping(struct qcom_nand_controller *snandc, u32 opcode)
|
|
|
|
|
+{
|
|
|
|
|
+ u32 cmd = 0x0;
|
|
|
|
|
+ int cmd = 0x0;
|
|
|
|
|
+
|
|
|
|
|
+ switch (opcode) {
|
|
|
|
|
+ case SPINAND_RESET:
|
|
|
|
|
@@ -1310,15 +1679,12 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+static int qcom_spi_write_page(struct qcom_nand_controller *snandc,
|
|
|
|
|
+ const struct spi_mem_op *op)
|
|
|
|
|
+{
|
|
|
|
|
+ struct qpic_snand_op s_op = {};
|
|
|
|
|
+ u32 cmd;
|
|
|
|
|
+ int cmd;
|
|
|
|
|
+
|
|
|
|
|
+ cmd = qcom_spi_cmd_mapping(snandc, op->cmd.opcode);
|
|
|
|
|
+ if (cmd < 0)
|
|
|
|
|
+ return cmd;
|
|
|
|
|
+
|
|
|
|
|
+ s_op.cmd_reg = cmd;
|
|
|
|
|
+
|
|
|
|
|
+ if (op->cmd.opcode == SPINAND_PROGRAM_LOAD)
|
|
|
|
|
+ snandc->qspi->data_buf = (u8 *)op->data.buf.out;
|
|
|
|
|
+
|
|
|
|
|
@@ -1332,9 +1698,11 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+ u32 cmd;
|
|
|
|
|
+ int ret, opcode;
|
|
|
|
|
+
|
|
|
|
|
+ cmd = qcom_spi_cmd_mapping(snandc, op->cmd.opcode);
|
|
|
|
|
+ if (cmd < 0)
|
|
|
|
|
+ return cmd;
|
|
|
|
|
+ ret = qcom_spi_cmd_mapping(snandc, op->cmd.opcode);
|
|
|
|
|
+ if (ret < 0)
|
|
|
|
|
+ return ret;
|
|
|
|
|
+
|
|
|
|
|
+ cmd = ret;
|
|
|
|
|
+
|
|
|
|
|
+ s_op.cmd_reg = cmd;
|
|
|
|
|
+ s_op.addr1_reg = op->addr.val;
|
|
|
|
|
@@ -1668,7 +2036,7 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+
|
|
|
|
|
+static const struct of_device_id qcom_snandc_of_match[] = {
|
|
|
|
|
+ {
|
|
|
|
|
+ .compatible = "qcom,spi-qpic-snand",
|
|
|
|
|
+ .compatible = "qcom,ipq9574-snand",
|
|
|
|
|
+ .data = &ipq9574_snandc_props,
|
|
|
|
|
+ },
|
|
|
|
|
+ {}
|
|
|
|
|
@@ -1681,7 +2049,7 @@ Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
|
|
|
|
|
+ .of_match_table = qcom_snandc_of_match,
|
|
|
|
|
+ },
|
|
|
|
|
+ .probe = qcom_spi_probe,
|
|
|
|
|
+ .remove = qcom_spi_remove,
|
|
|
|
|
+ .remove_new = qcom_spi_remove,
|
|
|
|
|
+};
|
|
|
|
|
+module_platform_driver(qcom_spi_driver);
|
|
|
|
|
+
|
Robert Marko