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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/misc/cardreader/rts5209.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/misc/cardreader/rts5209.c')
-rw-r--r--drivers/misc/cardreader/rts5209.c267
1 files changed, 267 insertions, 0 deletions
diff --git a/drivers/misc/cardreader/rts5209.c b/drivers/misc/cardreader/rts5209.c
new file mode 100644
index 000000000..52b0a476b
--- /dev/null
+++ b/drivers/misc/cardreader/rts5209.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Driver for Realtek PCI-Express card reader
+ *
+ * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ * Wei WANG <wei_wang@realsil.com.cn>
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/rtsx_pci.h>
+
+#include "rtsx_pcr.h"
+
+static u8 rts5209_get_ic_version(struct rtsx_pcr *pcr)
+{
+ u8 val;
+
+ val = rtsx_pci_readb(pcr, 0x1C);
+ return val & 0x0F;
+}
+
+static void rts5209_fetch_vendor_settings(struct rtsx_pcr *pcr)
+{
+ struct pci_dev *pdev = pcr->pci;
+ u32 reg;
+
+ pci_read_config_dword(pdev, PCR_SETTING_REG1, &reg);
+ pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
+
+ if (rts5209_vendor_setting1_valid(reg)) {
+ if (rts5209_reg_check_ms_pmos(reg))
+ pcr->flags |= PCR_MS_PMOS;
+ pcr->aspm_en = rts5209_reg_to_aspm(reg);
+ }
+
+ pci_read_config_dword(pdev, PCR_SETTING_REG2, &reg);
+ pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
+
+ if (rts5209_vendor_setting2_valid(reg)) {
+ pcr->sd30_drive_sel_1v8 =
+ rts5209_reg_to_sd30_drive_sel_1v8(reg);
+ pcr->sd30_drive_sel_3v3 =
+ rts5209_reg_to_sd30_drive_sel_3v3(reg);
+ pcr->card_drive_sel = rts5209_reg_to_card_drive_sel(reg);
+ }
+}
+
+static void rts5209_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool runtime)
+{
+ rtsx_pci_write_register(pcr, FPDCTL, 0x07, 0x07);
+}
+
+static int rts5209_extra_init_hw(struct rtsx_pcr *pcr)
+{
+ rtsx_pci_init_cmd(pcr);
+
+ /* Turn off LED */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_GPIO, 0xFF, 0x03);
+ /* Reset ASPM state to default value */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
+ /* Force CLKREQ# PIN to drive 0 to request clock */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0x08, 0x08);
+ /* Configure GPIO as output */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_GPIO_DIR, 0xFF, 0x03);
+ /* Configure driving */
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL,
+ 0xFF, pcr->sd30_drive_sel_3v3);
+
+ return rtsx_pci_send_cmd(pcr, 100);
+}
+
+static int rts5209_optimize_phy(struct rtsx_pcr *pcr)
+{
+ return rtsx_pci_write_phy_register(pcr, 0x00, 0xB966);
+}
+
+static int rts5209_turn_on_led(struct rtsx_pcr *pcr)
+{
+ return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00);
+}
+
+static int rts5209_turn_off_led(struct rtsx_pcr *pcr)
+{
+ return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01);
+}
+
+static int rts5209_enable_auto_blink(struct rtsx_pcr *pcr)
+{
+ return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
+}
+
+static int rts5209_disable_auto_blink(struct rtsx_pcr *pcr)
+{
+ return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
+}
+
+static int rts5209_card_power_on(struct rtsx_pcr *pcr, int card)
+{
+ int err;
+ u8 pwr_mask, partial_pwr_on, pwr_on;
+
+ pwr_mask = SD_POWER_MASK;
+ partial_pwr_on = SD_PARTIAL_POWER_ON;
+ pwr_on = SD_POWER_ON;
+
+ if ((pcr->flags & PCR_MS_PMOS) && (card == RTSX_MS_CARD)) {
+ pwr_mask = MS_POWER_MASK;
+ partial_pwr_on = MS_PARTIAL_POWER_ON;
+ pwr_on = MS_POWER_ON;
+ }
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
+ pwr_mask, partial_pwr_on);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, 0x04);
+ err = rtsx_pci_send_cmd(pcr, 100);
+ if (err < 0)
+ return err;
+
+ /* To avoid too large in-rush current */
+ udelay(150);
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, pwr_mask, pwr_on);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, 0x00);
+ return rtsx_pci_send_cmd(pcr, 100);
+}
+
+static int rts5209_card_power_off(struct rtsx_pcr *pcr, int card)
+{
+ u8 pwr_mask, pwr_off;
+
+ pwr_mask = SD_POWER_MASK;
+ pwr_off = SD_POWER_OFF;
+
+ if ((pcr->flags & PCR_MS_PMOS) && (card == RTSX_MS_CARD)) {
+ pwr_mask = MS_POWER_MASK;
+ pwr_off = MS_POWER_OFF;
+ }
+
+ rtsx_pci_init_cmd(pcr);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
+ pwr_mask | PMOS_STRG_MASK, pwr_off | PMOS_STRG_400mA);
+ rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
+ LDO3318_PWR_MASK, 0x06);
+ return rtsx_pci_send_cmd(pcr, 100);
+}
+
+static int rts5209_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
+{
+ int err;
+
+ if (voltage == OUTPUT_3V3) {
+ err = rtsx_pci_write_register(pcr,
+ SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
+ if (err < 0)
+ return err;
+ } else if (voltage == OUTPUT_1V8) {
+ err = rtsx_pci_write_register(pcr,
+ SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8);
+ if (err < 0)
+ return err;
+ err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24);
+ if (err < 0)
+ return err;
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct pcr_ops rts5209_pcr_ops = {
+ .fetch_vendor_settings = rts5209_fetch_vendor_settings,
+ .extra_init_hw = rts5209_extra_init_hw,
+ .optimize_phy = rts5209_optimize_phy,
+ .turn_on_led = rts5209_turn_on_led,
+ .turn_off_led = rts5209_turn_off_led,
+ .enable_auto_blink = rts5209_enable_auto_blink,
+ .disable_auto_blink = rts5209_disable_auto_blink,
+ .card_power_on = rts5209_card_power_on,
+ .card_power_off = rts5209_card_power_off,
+ .switch_output_voltage = rts5209_switch_output_voltage,
+ .cd_deglitch = NULL,
+ .conv_clk_and_div_n = NULL,
+ .force_power_down = rts5209_force_power_down,
+};
+
+/* SD Pull Control Enable:
+ * SD_DAT[3:0] ==> pull up
+ * SD_CD ==> pull up
+ * SD_WP ==> pull up
+ * SD_CMD ==> pull up
+ * SD_CLK ==> pull down
+ */
+static const u32 rts5209_sd_pull_ctl_enable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
+ 0,
+};
+
+/* SD Pull Control Disable:
+ * SD_DAT[3:0] ==> pull down
+ * SD_CD ==> pull up
+ * SD_WP ==> pull down
+ * SD_CMD ==> pull down
+ * SD_CLK ==> pull down
+ */
+static const u32 rts5209_sd_pull_ctl_disable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL1, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
+ 0,
+};
+
+/* MS Pull Control Enable:
+ * MS CD ==> pull up
+ * others ==> pull down
+ */
+static const u32 rts5209_ms_pull_ctl_enable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
+ 0,
+};
+
+/* MS Pull Control Disable:
+ * MS CD ==> pull up
+ * others ==> pull down
+ */
+static const u32 rts5209_ms_pull_ctl_disable_tbl[] = {
+ RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
+ RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
+ 0,
+};
+
+void rts5209_init_params(struct rtsx_pcr *pcr)
+{
+ pcr->extra_caps = EXTRA_CAPS_SD_SDR50 |
+ EXTRA_CAPS_SD_SDR104 | EXTRA_CAPS_MMC_8BIT;
+ pcr->num_slots = 2;
+ pcr->ops = &rts5209_pcr_ops;
+
+ pcr->flags = 0;
+ pcr->card_drive_sel = RTS5209_CARD_DRIVE_DEFAULT;
+ pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
+ pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
+ pcr->aspm_en = ASPM_L1_EN;
+ pcr->aspm_mode = ASPM_MODE_CFG;
+ pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 16);
+ pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
+
+ pcr->ic_version = rts5209_get_ic_version(pcr);
+ pcr->sd_pull_ctl_enable_tbl = rts5209_sd_pull_ctl_enable_tbl;
+ pcr->sd_pull_ctl_disable_tbl = rts5209_sd_pull_ctl_disable_tbl;
+ pcr->ms_pull_ctl_enable_tbl = rts5209_ms_pull_ctl_enable_tbl;
+ pcr->ms_pull_ctl_disable_tbl = rts5209_ms_pull_ctl_disable_tbl;
+}