diff options
Diffstat (limited to 'meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0013-Add-rcar-spi-hibernation-code.patch')
| -rwxr-xr-x | meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0013-Add-rcar-spi-hibernation-code.patch | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0013-Add-rcar-spi-hibernation-code.patch b/meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0013-Add-rcar-spi-hibernation-code.patch deleted file mode 100755 index 515b08b12..000000000 --- a/meta-agl-bsp/meta-renesas/recipes-kernel/linux/linux/hibernation/0013-Add-rcar-spi-hibernation-code.patch +++ /dev/null @@ -1,168 +0,0 @@ -From c1b129172a91046a7555a3c198b49eb1b45aafd7 Mon Sep 17 00:00:00 2001 -From: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com> -Date: Thu, 18 May 2017 17:58:28 +0900 -Subject: [PATCH 13/15] Add rcar-spi hibernation code - -Signed-off-by: Yuichi Kusakabe <yuichi.kusakabe@jp.fujitsu.com> ---- - drivers/spi/spi-rspi.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++- - 1 file changed, 108 insertions(+), 1 deletion(-) - -diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c -index 215be3b..a2432de 100644 ---- a/drivers/spi/spi-rspi.c -+++ b/drivers/spi/spi-rspi.c -@@ -38,6 +38,7 @@ - #include <linux/sh_dma.h> - #include <linux/spi/spi.h> - #include <linux/spi/rspi.h> -+#include <linux/delay.h> - - #define RSPI_SPCR 0x00 /* Control Register */ - #define RSPI_SSLP 0x01 /* Slave Select Polarity Register */ -@@ -208,6 +209,12 @@ struct rspi_data { - u8 sppcr; - int rx_irq, tx_irq; - const struct spi_ops *ops; -+ u32 save_spbmul0; -+ u32 save_spbmul1; -+ u32 save_spbmul2; -+ u32 save_spbmul3; -+ u8 save_spbfcr; -+ u8 save_spscr; - - unsigned dma_callbacked:1; - unsigned byte_access:1; -@@ -238,6 +245,11 @@ static u16 rspi_read16(const struct rspi_data *rspi, u16 offset) - return ioread16(rspi->addr + offset); - } - -+static u16 rspi_read32(const struct rspi_data *rspi, u16 offset) -+{ -+ return ioread32(rspi->addr + offset); -+} -+ - #define rspi_update8(spi, mask, val, reg) \ - rspi_write8(spi, (rspi_read8(spi, reg) & ~mask) | val, reg); - -@@ -504,7 +516,6 @@ static int rspi_pio_transfer_in(struct rspi_data *rspi, u8 *rx, unsigned int n) - if (!rx) - return 0; - -- - while (n > 0) { - count = min(n, SPI_BUFFER_SIZE); - if (count >= SPI_BUFFER_SIZE) { -@@ -1278,6 +1289,101 @@ error1: - return ret; - } - -+int rspi_suspend(struct device *dev) -+{ -+ struct rspi_data *rspi = platform_get_drvdata(to_platform_device(dev)); -+ clk_disable_unprepare(rspi->clk); -+ return 0; -+} -+ -+int rspi_resume(struct device *dev) -+{ -+ struct rspi_data *rspi = platform_get_drvdata(to_platform_device(dev)); -+ clk_prepare_enable(rspi->clk); -+ return 0; -+} -+ -+#define PR_REG8(dev, rspi, reg) \ -+ dev_dbg(dev, "QSPI REG: " #reg " = %08x\n", \ -+ rspi_read8(rspi, reg)) -+#define PR_REG16(dev, rspi, reg) \ -+ dev_dbg(dev, "QSPI REG: " #reg " = %08x\n", \ -+ rspi_read16(rspi, reg)) -+#define PR_REG32(dev, rspi, reg) \ -+ dev_dbg(dev, "QSPI REG: " #reg " = %08x\n", \ -+ rspi_read32(rspi, reg)) -+ -+#ifdef DEBUG -+static void pr_regs(struct device *dev) -+{ -+ struct rspi_data *rspi = platform_get_drvdata(to_platform_device(dev)); -+ PR_REG8(dev, rspi, RSPI_SPCR); -+ PR_REG8(dev, rspi, RSPI_SSLP); -+ PR_REG8(dev, rspi, RSPI_SPPCR); -+ PR_REG8(dev, rspi, RSPI_SPDR); -+ PR_REG8(dev, rspi, RSPI_SPSCR); -+ PR_REG8(dev, rspi, RSPI_SPBR); -+ PR_REG8(dev, rspi, RSPI_SPDCR); -+ PR_REG8(dev, rspi, RSPI_SPCKD); -+ PR_REG8(dev, rspi, RSPI_SSLND); -+ PR_REG8(dev, rspi, RSPI_SPND); -+ PR_REG16(dev, rspi, RSPI_SPCMD0); -+ PR_REG16(dev, rspi, RSPI_SPCMD1); -+ PR_REG16(dev, rspi, RSPI_SPCMD2); -+ PR_REG16(dev, rspi, RSPI_SPCMD3); -+ PR_REG8(dev, rspi, QSPI_SPBFCR); -+ PR_REG16(dev, rspi, QSPI_SPBDCR); -+ PR_REG32(dev, rspi, QSPI_SPBMUL0); -+ PR_REG32(dev, rspi, QSPI_SPBMUL1); -+ PR_REG32(dev, rspi, QSPI_SPBMUL2); -+ PR_REG32(dev, rspi, QSPI_SPBMUL3); -+} -+#endif -+ -+int rspi_freeze(struct device *dev) -+{ -+ struct rspi_data *rspi = platform_get_drvdata(to_platform_device(dev)); -+ rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_SPE, RSPI_SPCR); -+ rspi->save_spbmul0 = rspi_read32(rspi, QSPI_SPBMUL0); -+ rspi->save_spbmul1 = rspi_read32(rspi, QSPI_SPBMUL1); -+ rspi->save_spbmul2 = rspi_read32(rspi, QSPI_SPBMUL2); -+ rspi->save_spbmul3 = rspi_read32(rspi, QSPI_SPBMUL3); -+ rspi->save_spbfcr = rspi_read8(rspi, QSPI_SPBFCR); -+ rspi->save_spscr = rspi_read8(rspi, RSPI_SPSCR); -+ dev_info(dev, "freeze\n"); -+#ifdef DEBUG -+ pr_regs(dev); -+#endif -+ return 0; -+} -+ -+ -+int rspi_restore(struct device *dev) -+{ -+ struct rspi_data *rspi = platform_get_drvdata(to_platform_device(dev)); -+ clk_prepare_enable(rspi->clk); -+ udelay(16); -+ set_config_register(rspi, 8); -+ rspi_write8(rspi, rspi_read8(rspi, RSPI_SPCR) & ~SPCR_SPE, RSPI_SPCR); -+ rspi_write8(rspi, rspi->save_spscr, RSPI_SPSCR); -+ rspi_write8(rspi, rspi->save_spbfcr, QSPI_SPBFCR); -+ rspi_write32(rspi, rspi->save_spbmul3, QSPI_SPBMUL3); -+ rspi_write32(rspi, rspi->save_spbmul2, QSPI_SPBMUL2); -+ rspi_write32(rspi, rspi->save_spbmul1, QSPI_SPBMUL1); -+ rspi_write32(rspi, rspi->save_spbmul0, QSPI_SPBMUL0); -+ dev_info(dev, "restore\n"); -+#ifdef DEBUG -+ pr_regs(dev); -+#endif -+ return 0; -+} -+ -+const struct dev_pm_ops rspi_pm_ops = { -+ SET_SYSTEM_SLEEP_PM_OPS(rspi_suspend, rspi_resume) -+ .restore = rspi_restore, -+ .freeze = rspi_freeze, -+}; -+ - static struct platform_device_id spi_driver_ids[] = { - { "rspi", (kernel_ulong_t)&rspi_ops }, - { "rspi-rz", (kernel_ulong_t)&rspi_rz_ops }, -@@ -1295,6 +1401,7 @@ static struct platform_driver rspi_driver = { - .name = "renesas_spi", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(rspi_of_match), -+ .pm = &rspi_pm_ops, - }, - }; - module_platform_driver(rspi_driver); --- -1.8.3.1 - |