From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> To: "Mark Brown" <broonie@kernel.org>, "Michal Simek" <michal.simek@xilinx.com>, "Sören Brinkmann" <soren.brinkmann@xilinx.com>, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Subject: [PATCH 00/18] spi/xilinx: Speed-up Date: Fri, 23 Jan 2015 17:08:32 +0100 [thread overview] Message-ID: <1422029330-10971-1-git-send-email-ricardo.ribalda@gmail.com> (raw) This set of patches has been developed after using the core to access a spi nor flash. The initial performance was not as desired. The following changes have been done. -This series of patches add driver support for hardware implemented modes: LSB_FIRS, LOOP and CS_HIGH. -There is support for irq less operations. -The buffer size of the core is detected at probe time, speeding up the operations. -Code has been simplify and cleaned This are the results, before and after the patchet Original root@qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 117.985 s, 71.1 kB/s 37: 107 82853 Xilinx INTC Level 1 b0010000.spi-flash After patchset (irq): root@qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 49.009 s, 171 kB/s After patchset (irq): root@qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 41.2526 s, 203 kB/s IRQS: ZERO This set of patches supersedes the previous patchet with only LSB_FIRST and LOOP Ricardo Ribalda Delgado (18): spi/xilinx: Support for spi mode LSB_FIRST spi/xilinx: Support for spi mode LOOP spi/xilinx: Simplify data read from the Rx FIFO spi-xilinx: Simplify spi_fill_tx_fifo spi/xilinx: Leave the IRQ always enabled. spi/xilinx: Code cleanup spi/xilinx: Use cached value of register spi/xilinx: Support cores with no interrupt spi/xilinx: Do not inhibit transmission in polling mode spi/xilinx: Support for spi mode CS_HIGH spi/xilinx: Remove rx_fn and tx_fn pointer spi/xilinx: Make spi_tx and spi_rx simmetric spi/xilinx: Convert remainding_bytes in remaining words spi/xilinx: Convert bits_per_word in bytes_per_word spi/xilinx: Remove iowrite/ioread wrappers spi/xilinx: Reset core before buffer_size detection spi/xilinx: Remove remaining_words driver data variable spi/xilinx: Check number of slaves range drivers/spi/spi-xilinx.c | 306 ++++++++++++++++++++++------------------------- 1 file changed, 146 insertions(+), 160 deletions(-) -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: ricardo.ribalda@gmail.com (Ricardo Ribalda Delgado) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 00/18] spi/xilinx: Speed-up Date: Fri, 23 Jan 2015 17:08:32 +0100 [thread overview] Message-ID: <1422029330-10971-1-git-send-email-ricardo.ribalda@gmail.com> (raw) This set of patches has been developed after using the core to access a spi nor flash. The initial performance was not as desired. The following changes have been done. -This series of patches add driver support for hardware implemented modes: LSB_FIRS, LOOP and CS_HIGH. -There is support for irq less operations. -The buffer size of the core is detected at probe time, speeding up the operations. -Code has been simplify and cleaned This are the results, before and after the patchet Original root at qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 117.985 s, 71.1 kB/s ?37: ? ? ? ?107 ? ? ?82853 ?Xilinx INTC Level ? 1 ?b0010000.spi-flash After patchset (irq): root at qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 49.009 s, 171 kB/s After patchset (irq): root at qt5022:~# dd if=/dev/mtd0 of=/dev/null 16384+0 records in 16384+0 records out 8388608 bytes (8.4 MB) copied, 41.2526 s, 203 kB/s IRQS:?ZERO This set of patches supersedes the previous patchet with only LSB_FIRST and LOOP Ricardo Ribalda Delgado (18): spi/xilinx: Support for spi mode LSB_FIRST spi/xilinx: Support for spi mode LOOP spi/xilinx: Simplify data read from the Rx FIFO spi-xilinx: Simplify spi_fill_tx_fifo spi/xilinx: Leave the IRQ always enabled. spi/xilinx: Code cleanup spi/xilinx: Use cached value of register spi/xilinx: Support cores with no interrupt spi/xilinx: Do not inhibit transmission in polling mode spi/xilinx: Support for spi mode CS_HIGH spi/xilinx: Remove rx_fn and tx_fn pointer spi/xilinx: Make spi_tx and spi_rx simmetric spi/xilinx: Convert remainding_bytes in remaining words spi/xilinx: Convert bits_per_word in bytes_per_word spi/xilinx: Remove iowrite/ioread wrappers spi/xilinx: Reset core before buffer_size detection spi/xilinx: Remove remaining_words driver data variable spi/xilinx: Check number of slaves range drivers/spi/spi-xilinx.c | 306 ++++++++++++++++++++++------------------------- 1 file changed, 146 insertions(+), 160 deletions(-) -- 2.1.4
next reply other threads:[~2015-01-23 16:08 UTC|newest] Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-01-23 16:08 Ricardo Ribalda Delgado [this message] 2015-01-23 16:08 ` [PATCH 00/18] spi/xilinx: Speed-up Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 01/18] spi/xilinx: Support for spi mode LSB_FIRST Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-26 19:23 ` Mark Brown 2015-01-26 19:23 ` Mark Brown 2015-01-26 19:23 ` Mark Brown 2015-01-23 16:08 ` [PATCH 02/18] spi/xilinx: Support for spi mode LOOP Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-26 19:23 ` Mark Brown 2015-01-26 19:23 ` Mark Brown 2015-01-26 19:23 ` Mark Brown 2015-01-23 16:08 ` [PATCH 03/18] spi/xilinx: Simplify data read from the Rx FIFO Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 17:25 ` Mark Brown 2015-01-27 17:25 ` Mark Brown 2015-01-27 17:25 ` Mark Brown 2015-01-23 16:08 ` [PATCH 04/18] spi-xilinx: Simplify spi_fill_tx_fifo Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-26 23:54 ` Mark Brown 2015-01-26 23:54 ` Mark Brown 2015-01-23 16:08 ` [PATCH 05/18] spi/xilinx: Leave the IRQ always enabled Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 06/18] spi/xilinx: Code cleanup Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 0:05 ` Mark Brown 2015-01-27 0:05 ` Mark Brown 2015-01-27 0:05 ` Mark Brown 2015-01-23 16:08 ` [PATCH 07/18] spi/xilinx: Use cached value of register Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 08/18] spi/xilinx: Support cores with no interrupt Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 0:04 ` Mark Brown 2015-01-27 0:04 ` Mark Brown 2015-01-27 0:04 ` Mark Brown 2015-01-27 19:05 ` Ricardo Ribalda Delgado 2015-01-27 19:05 ` Ricardo Ribalda Delgado 2015-01-27 19:49 ` Mark Brown 2015-01-27 19:49 ` Mark Brown 2015-01-27 19:49 ` Mark Brown 2015-01-27 19:56 ` Ricardo Ribalda Delgado 2015-01-27 19:56 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 09/18] spi/xilinx: Do not inhibit transmission in polling mode Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 10/18] spi/xilinx: Support for spi mode CS_HIGH Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 11/18] spi/xilinx: Remove rx_fn and tx_fn pointer Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 0:09 ` Mark Brown 2015-01-27 0:09 ` Mark Brown 2015-01-27 0:09 ` Mark Brown 2015-01-27 10:00 ` Ricardo Ribalda Delgado 2015-01-27 10:00 ` Ricardo Ribalda Delgado 2015-01-27 10:00 ` Ricardo Ribalda Delgado 2015-01-27 15:42 ` Joe Perches 2015-01-27 15:42 ` Joe Perches 2015-01-27 15:42 ` Joe Perches 2015-01-27 19:07 ` Ricardo Ribalda Delgado 2015-01-27 19:07 ` Ricardo Ribalda Delgado 2015-01-27 19:07 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 12/18] spi/xilinx: Make spi_tx and spi_rx simmetric Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 13/18] spi/xilinx: Convert remainding_bytes in remaining words Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 14/18] spi/xilinx: Convert bits_per_word in bytes_per_word Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 15/18] spi/xilinx: Remove iowrite/ioread wrappers Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 16/18] spi/xilinx: Reset core before buffer_size detection Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 0:11 ` Mark Brown 2015-01-27 0:11 ` Mark Brown 2015-01-27 0:11 ` Mark Brown 2015-01-23 16:08 ` [PATCH 17/18] spi/xilinx: Remove remaining_words driver data variable Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-23 16:08 ` [PATCH 18/18] spi/xilinx: Check number of slaves range Ricardo Ribalda Delgado 2015-01-23 16:08 ` Ricardo Ribalda Delgado 2015-01-27 0:14 ` [PATCH 00/18] spi/xilinx: Speed-up Mark Brown 2015-01-27 0:14 ` Mark Brown 2015-01-27 0:14 ` Mark Brown 2015-01-27 10:17 ` Ricardo Ribalda Delgado 2015-01-27 10:17 ` Ricardo Ribalda Delgado 2015-01-27 11:59 ` Mark Brown 2015-01-27 11:59 ` Mark Brown 2015-01-27 11:59 ` Mark Brown
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